Agilent B2900 Series Precision Source/Measure Unit User’s Guide Agilent Technologies
Notices © Agilent Technologies, Inc. 2011 Warranty No part of this manual may be reproduced in any form or by any means (including electronic storage and retrieval or translation into a foreign language) without prior agreement and written consent from Agilent Technologies, Inc. as governed by United States and international copyright laws. The material contained in this document is provided “as is,” and is subject to being changed, without notice, in future editions.
DECLARATION OF CONFORMITY According to EN ISO/IEC 17050-1:2004 Manufacturer’s Name: Manufacturer’s Address: Agilent Technologies Singapore (International) Pte. Ltd. No.
COMPLIANCE WITH GERMAN NOISE REQUIREMENTS This is to declare that this product is in conformance with the German Regulation on Noise Declaration for Machines (Lärmangabe nach der Maschinenlärminformation-Verordnung -3.GSGV Deutschland). • Herstellerbescheinigung GERÄUSCHEMISSION Lpa < 70 dB am Arbeitsplatz normaler Betrieb nach DIN 45635 T.
Safety Summary The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual may impair the protections provided by the instrument. In addition, it violates safety standards of design, manufacture, and intended use of the instrument. Agilent Technologies, Inc. assumes no liability for customer’s failure to comply with these requirements.
• GROUND THE INSTRUMENT This is Safety Class I instrument. To minimize shock hazard, the instrument chassis and cabinet must be connected to an electrical ground. The power terminal and the power cable must meet International Electrotechnical Commission (IEC) safety standards. • DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE Do not operate the instrument in the presence of flammable gases or fumes. Operation of any electrical instrument in such an environment constitutes a definite safety hazard.
Safety Symbols The general definitions of safety symbols used on equipment or in manuals are listed below. Direct current. ` Alternating current. Protective conductor terminal. For protection against electrical shock in case of a fault. Used with field wiring terminals to indicate the terminal which must be connected to ground before operating equipment. Frame or chassis terminal. A connection to the frame (chassis) of the equipment which normally includes all exposed metal structures.
The CE mark shows that the product complies with all applicable European Directives. The CSA mark is a registered trademark of the Canadian Standards Association. The C-Tick mark is a registered trademark of the Australian Communications Authority. This signifies compliance with the Australian EMC Framework Regulations under the terms of the Radio communications Act. This ISM device complies with Canadian ICES-001. Cet appareil ISM est conforme à la norme NMB-001 du Canada.
Power Supply and Measurement Safety • Power Supply Safety This instrument can output high currents and voltages. Make sure that the load or device under test can safely handle the output current and voltage. Also, make sure that the connection leads can safely withstand the expected currents and are insulated for the expected voltages. The instrument outputs may be connected so as to float relative to earth ground.
• Source/Measure Terminals Source/measure unit, SMU, can simultaneously perform DC voltage or current output and measurement. Typical SMU has the Force, Sense, and Guard terminals as shown below. Normally the Force, Sense, and Guard are the same potential. Voltage marked around the terminals indicates the Protection Limits.
High Voltage Shock Hazard Agilent B2900 can force dangerous voltages (±210 V) at the High Force, Guard, and High Sense terminals. To prevent electric shock hazard, the following safety precautions must be observed during the use of Agilent B2900. • Use a three-conductor AC power cable to appliance coupler (inlet) and the instrument to an electric ground (safety ground).
Gefahr durch Hochspannung Von den Geräten Agilent B2900 können Spannungen an den Anschlüssen “High Force, Guard und High Sense” von bis zu 210 V ausgehen. Um elektrischem Schlag vorzubeugen, ist bei der Benützung der Geräte Agilent B2900 folgendes zu beachten. • Verwenden Sie ein dreiphasiges AC-Stromkabel für die Gerätsteckvorrichtung (Eingang) und schließen Sie das Instrument an eine Erdung an (Sicherheitserdung).
Danger de choc dû à une haute tension Une tension dangereuse (max. ± pour; 210 Vdc) émanant du dispositif Agilent B2900 peut être sortie aux bornes de force, d'appareil de protection ou de détection. Les précautions suivantes doivent être obserées contre commotion électrique accidentelle. • Utilisez un câble d’alimentation CA à trois conducteurs vers le coupleur secteur (entrée) et branchez l’instrument sur une mise électrique à la terre (prise de terre de sécurité).
高電圧感電注意 Agilent B2900 のフォース、ガード、センス端子には、危険電圧が出力されることが あります（最大 ±210 Vdc）。感電事故防止のため、必ず以下の事柄を守ってくださ い。 • 3 極電源ケーブルを使用して本器を接地してください。 • ドアを開くことによって開放されるインターロック回路を装備し、被測定デバ イスとのインタフェースを覆うことのできるシールド・ボックスを用意してく ださい。 • 測定を開始する前にはインターロック回路を本器の Interlock 端子に接続してく ださい。 • インターロック機能が正常であることを定期的に確認してください。 • High Force、Guard、High Sense 端子に繋がる接続部に触れる前には、本器の電源 を切断してください。また、測定系のキャパシタを放電してください。電源を 切らない場合は、以下の事項を全て実施してください。 • • On/Off スイッチを押して On/Off スイッチが消灯したことを確認してくださ い。 • 高電圧警告（High Voltage）インジケータが消灯していることを確認して
Product Stewardship • Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC This product complies with the WEEE Directive (2002/96/EC) marking requirements. The affixed label indicates that you must not discard this electrical/ electronic product in domestic household waste. Product Category: With reference to the equipment types in the WEEE directive Annex 1, this product is classified as a “Monitoring and Control instrumentation” product. Do not dispose in domestic household waste.
In This Manual This manual describes the front panel operation, installation, and functions of the Agilent Technologies B2900 Precision Source/Measure Unit, SMU. This manual consists of the following chapters. • Chapter 1, “Getting Started” This chapter briefly explains how to use the Agilent B2900 by the front panel operation. • Chapter 2, “Introduction” This chapter describes overview, specifications, accessories, and options of the Agilent B2900.
Contents 1. Getting Started Applying DC Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Performing Spot Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 Performing Sweep Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 Operation Tips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents Operation and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28 Front Panel Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28 Source/Measurement Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30 Program and Interface Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31 Software and Drivers . . . . .
Contents Floating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 Using Test Leads. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13 Using the N1295A Test Fixture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14 Using the 16442B Test Fixture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15 Guarding . .
Contents Ranging dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28 Wait Control dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29 Function key group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30 Math Expression dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents Basic Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 Changing the Setting in a Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 Changing the Settings on a Dialog Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 Configuring Various Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents Setting the Connection Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15 Setting the Low Terminal State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15 Enabling or Disabling the High Capacitance Mode . . . . . . . . . . . . . . . . . . . . . . . . 5-16 Enabling or Disabling the Over Voltage/Current Protection . . . . . . . . . . . . . . . . . 5-16 Specifying the Output-Off Status . . . . . . . . . . . . . . . . . . .
Contents Using Program Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32 Selecting a Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32 Controlling the Program Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32 6. Function Details Limit/Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents Predefined Math Expressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17 Resources Used in the Expressions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18 Limit Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20 Trace Buffer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Getting Started
Getting Started This chapter describes basic operations for Agilent B2900. Before learning the details of B2900, let us briefly cover the use of the B2900 source/measure unit. The operations require only B2900 and the power cord. To get started with the operations, open the measurement terminals. This chapter consists of the following sections.
Getting Started Applying DC Output Applying DC Output B2900 can be used as a DC voltage or current source. The following procedure configures B2900 as a voltage source and applies a voltage of +500 mV. Step 1. Setting the Source mode (voltage output) 1. Press the Mode assist key on a 1-ch model, or the Ch1 Mode assist key on a 2-ch model. The field pointer appears on the Source mode, and the status changes to EDIT (green). The status information will show . 2. Press the VOLTS (V) assist key.
Getting Started Applying DC Output This example sets the Source value to +500 mV. Step 3. Setting the Limit value (compliance current) 1. Press the Limit assist key on a 1-ch model, or the Ch1 Limit assist key on a 2-ch model. Or, use the rotary knob or arrow keys to move the field pointer onto the Limit value and press the knob. The field pointer appears on the Limit value, and the status changes to EDIT (green). 2. Use the rotary knob, arrow keys, or numeric/alpha keys to set the value. 3.
Getting Started Performing Spot Measurement Performing Spot Measurement B2900 can be used as a DC voltage or current meter. The following procedure performs one point current measurement. Step 1. Setting the measurement mode (current measurement) Press the Measure assist key on a 1-ch model, or the Ch1 Measure assist key on a 2-ch model. And press the AMPS (I) assist key.
Getting Started Performing Sweep Measurement Performing Sweep Measurement B2900 supports sweep measurements. The following example applies a staircase sweep voltage and measures the current at each step voltage. Step 1. Press the key to display the Single view. Step 2. Set the Source mode, Limit value, and measurement mode as shown in “Applying DC Output” and “Performing Spot Measurement”. This example sets the voltage output, a 10 mA limit value, and both current and voltage measurements. Step 3.
Getting Started Performing Sweep Measurement 5. Use the rotary knob, arrow keys, or numeric/alpha keys to set the Start (sweep start value), Stop (sweep stop value), and Step (sweep step value) or Points (number of sweep steps). This example sets Start to 1 V, Stop to 2 V, and Points to 11. Step 4. Press the key to display the Graph view. Step 5. Enabling the channel Press the Ch 1 switch to enable channel 1. This turns the switch green.
Getting Started Operation Tips Operation Tips This section introduces key operation and status information on B2900. Figure 1-1 • “Changing the View Mode” • “Editing the Setup” • “Status Information” Changing the View Mode Single B2901A Graph 1 B2902A Dual Single Ch1 D G 1 B2911A Graph Single Ch2 2 Single G Graph 1 B2912A Dual D 1 R G Single Ch2 Single Ch1 Roll Graph 2 Roll G R For details about the View mode, see “Display and Assist Keys” on page 4-5.
Getting Started Operation Tips Figure 1-2 Editing the Setup 1 MOVE status 4 1 2 MOVE status Select EDIT status 2 3 3 EDIT status 4 Fix Press to fix Press to select For more information about the front panel keys, see “Hard Keys and Rotary Knob” on page 4-3.
Getting Started Operation Summary Operation Summary This section summarizes front panel operations on B2900. • “Basic Operations” • “Channel Setup” • “Source Setup” • “Measurement Setup” • “Display Setup” • “File Operations” • “Miscellaneous Functions” • “Interface Setup” • “System Setup and Operations” For details about front panel operations, see Chapter 4, “Front Panel Reference.
Getting Started Operation Summary Table 1-1 Basic Operations Task Relevant front panel key To turn the B2900 on/off Line switch To change the display mode View To enable/disable the specified channel Ch 1 On/Off switch or Ch 2 On/Off switch To cancel the previous setup operation Cancel/Local key To return to the upper menu of a function key or softkey Cancel/Local key To return to the local status from the remote status Cancel/Local key To start a single (one shot) measurement Trigger To
Getting Started Operation Summary Table 1-3 Source Setup Task Relevant front panel key To enable/disable source output Ch 1 On/Off switch or Ch 2 On/Off switch To select source output mode Mode, Ch1 Mode, or Ch2 Mode assist key To set source output value Source, Ch1 Source, or Ch2 Source assist key To set limit/compliance value Limit, Ch1 Limit, or Ch2 Limit assist key To set constant source ranging mode Speed assist key or Hide Sweep/Pulse/Trigger assist key on Single view To set sweep source
Getting Started Operation Summary Task Relevant front panel key To set measurement ranging mode Speed assist key or Hide Sweep/Pulse/Trigger assist key on Single view To define automatic ranging operation Config > Measure > Ranging function keys To set measurement wait time Config > Common > Wait function keys Table 1-5 Display Setup Task Relevant front panel key To change the display mode View To change the color set Display > Color function keys To enable zoom-in Display > Zoom > ON funct
Getting Started Operation Summary Table 1-7 Miscellaneous Functions Task Relevant front panel key To see measurement result Result > Measure function keys To use math expression Function > Math function keys To see math result Result > Measure function keys To set limit test Function > Limit Test function keys To see limit test result Result > Limit Test function keys To set trace buffer Function > Trace function keys To see trace statistical result Result > Trace function keys To select pr
Getting Started Operation Summary Task Relevant front panel key To sets LAN settings to the default settings I/O > LAN > Default function keys To see status of USB interface I/O > USB function keys To set GPIB address I/O > GPIB function keys To see status of GPIB interface I/O > GPIB function keys To set configuration of Digital I/O I/O > DIO > Config function keys To read/write a value set to Digital I/O I/O > DIO > R/W function keys Table 1-9 System Setup and Operations Task Relevant fro
Getting Started Operation Summary 1- 16 Agilent B2900 User’s Guide, Edition 2
2 Introduction
Introduction This chapter describes the basic functions and features of the Agilent B2900, and consists of the following sections.
Introduction Agilent B2900 Series Agilent B2900 Series Agilent B2900 is a series of precision SMU (source/measure unit, SMU). B2900 provides the LCD, front panel keys, and rotary knob for applying voltage/current or measuring voltage/current/resistance. B2900 also supports several functions, such as sweep output, pulse output, arbitrary waveform generation, limit test, trace buffer, math expressions, and graph plot.
Introduction Front View Front View This section describes the front view of the Agilent B2900 series. • Line switch Turns the instrument on or off. • Display Displays the source setup, measurement result, status information, etc. For details, see Chapter 4, “Front Panel Reference.” • Trigger key Starts a single (one shot) measurement or initiates trigger system. If a repeat (continuous) measurement is in progress, stops the repeat measurement.
Introduction Front View • Auto key Starts a repeat measurement. If a repeat measurement is in progress, stops the repeat measurement. The repeat measurement is performed with the DC bias output of the Source value. And the measurement result is displayed on the Single view, Dual view, or Roll view. The repeat measurement result is not stored in the buffer. • USB-A connector Used to connect a USB memory. After disconnecting the USB memory, wait 10 seconds before connecting it again or new one.
Introduction Front View • Numeric/alpha keys Used to enter the value of setup parameters such as the source output value, limit (compliance) value, and message, specified by the field pointer. • Rotary knob If the field pointer is in the MOVE (blue) status, turning the knob moves the pointer. Pressing the knob fixes the pointer position and changes the pointer status to EDIT (green).
Introduction Rear View Rear View This section describes the rear view of the Agilent B2900 series. • Channel 2 source/measure terminals Only on 2-channel models. Terminals for SMU channel 2. High Force, Low Force, High Sense, Low Sense, Guard, and chassis ground. For details, see “Connecting a DUT” on page 3-10 CAUTION Never connect the Guard terminal to any output, including circuit common, chassis ground, or any other guard terminal. Doing so will damage the B2900.
Introduction Rear View • USB-B connector Connects to USB interface. • Digital I/O connector D-sub 25 pin female connector for general purpose I/O (GPIO). Can be used as trigger input/output terminals or as an interface to a handler or the likes. For details, see “Using Digital I/O” on page 3-29 Pins 16 and 24 and pins 17 and 25 are reserved for the interlock function. If the terminals are open, the instrument output is limited to 42 V.
Introduction Source/Measure Unit Source/Measure Unit The source/measure unit (SMU) can apply voltage or current, and can measure current or voltage. Figure 2-1 shows a simplified SMU circuit diagrams. The SMU can perform the following operations.
Introduction Source/Measure Unit Measurement Parameters B2900 supports the following measurement parameters. • Current • Voltage • Resistance • Power Resistance data is given by Resistance=Vmeas/Imeas. Power data is given by Power=VmeasImeas. In the above formula, Vmeas is the voltage measurement data, and Imeas is the current measurement data. For using the resistance compensation, see “Resistance Compensation” on page 6-16.
Introduction Source/Measure Unit Output and Measurement Ranges This section describes typical specifications of the Agilent B2900 series. Figure 2-2 • Maximum voltage and current: see Figure 2-2. • Maximum power: 31.8 W • Output/measurement value and resolution: see Table 2-2 to Table 2-7. Maximum Voltage and Current Current (A) DC output Pulsed output 3.03 Duty cycle ~ 99.9999 % 1.515 -21 -6 -210 Current (A) 10.5 21 6 0.105 -0.105 210 Voltage (V) -1.515 -3.03 1.515 -200 -6 6 -1.
Introduction Source/Measure Unit Table 2-2 Current Output Range Setting resolution B2901A B2902A B2911A B2912A DC output current or pulse peak/base current a b 10 nA d ― 10 fA 0 |I| 10.5 nA 100 nA 1 pA 100 fA 0 |I| 105 nA 1 A 10 pA 1 pA 0 |I| 1.05 A 10 A 100 pA 10 pA 0 |I| 10.5 A 100 A 1 nA 100 pA 0 |I| 105 A 1 mA 10 nA 1 nA 0 |I| 1.05 mA 10 mA 100 nA 10 nA 0 |I| 10.
Introduction Source/Measure Unit a. Table 2-4 shows the limitations when using Channels 1 and 2 for DC output or Pulsed output with 50 s t tmax (=99.9999 ks). b. Maximum base current is 500 mA for the pulse with 50 s t 1 ms, and 50 ms for the pulse with 50 s t 2.5 ms or 50 s t 10 ms. c. Maximum duty cycle is 99.9999 % for the pulse with 50 s t tmax, and 2.5 % for the pulse with 50 s t 1 ms, 50 s t 2.5 ms, or 50 s t 10 ms. d. Available for the B2911A and B2912A.
Introduction Source/Measure Unit Table 2-4 Limitations for using Channels 1 and 2 Channel 1 voltage V1 Channel 2 voltage V2 0 < |V1| 6 V 0 < |V2| 6 V 6 V < |V2| 21 V 6 V < |V1| 21 V 0 < |V2| 6 V 6 V < |V2| 21 V Current limit a I1 + I2 4 A I1 + I2 1.6 4 A I1 + I2 0.625 2.5 A I1 + I2 2.5 A a. I1: Channel 1 current, I2: Channel 2 current Table 2-5 Current Measurement Range Range value Current measurement value Resolution 10 nA a 0 |I| 10.
Introduction Source/Measure Unit Table 2-6 Table 2-7 Voltage Measurement Range Range value Voltage measurement value Resolution 0.2 V 0 |V| 0.212 V 0.1 V 2V 0 |V| 2.12 V 1 V 20 V 0 |V| 21.
Introduction Specifications Specifications This chapter lists specifications and supplemental information for the Agilent B2900 series. The specifications are the standards against which the B2900 is tested. When the B2900 is shipped from the factory, it meets the specifications. Specification Conditions The source and measurement accuracy are specified under the conditions listed below. 1. Temperature: 23 C ± 5 C 2. Humidity: 30 % to 80 % RH 3. After 60 minutes warm-up 4.
Introduction Specifications Table 2-8 Voltage Source Specifications Programming resolution Range B2901A B2902A B2911A B2912A Accuracy (gain error (% of reading) + offset error) 200 mV 1 V 0.1 V (0.015 % + 225 V) 10 V 210 mV 2 V 10 V 1 V (0.02 % + 350 V) 20 V 2.1 V 20 V 100 V 10 V (0.015 % + 5 mV) 200 V 21 V 200 V 1 mV 100 V (0.015 % + 50 mV) 2 mV 210 V Noise a (peak-peak) 0.1 Hz to 10 Hz Maximum current (over range) Noise a (peak-peak) 0.
Introduction Specifications Table 2-10 Voltage Measurement Specifications Measurement resolution Table 2-11 Range B2901A B2902A B2911A B2912A Accuracy (gain error (% of reading) + offset error) 200 mV 0.1 V 0.1 V (0.015 % + 225 V) 2 V 1 V 1 V (0.02 % + 350 V) 20 V 10 V 10 V (0.015 % + 5 mV) 200 V 100 V 100 V (0.
Introduction Specifications Source Supplemental Characteristics • Temperature coefficient (0 C to 18 C and 28 C to 50 C): (0.1 Accuracy specification) / C • Maximum output power and source/sink limits: 31.8 W. 6 V@ 3.03 A, 21 V@ 1.515 A, 210 V@ 105 mA, four quadrant source or sink operation. • Current limit/compliance: Accuracy is same as current source. Minimum value is 1 % of range, or 1 nA in 10 nA range. • Voltage limit/compliance: Accuracy is same as voltage source.
Introduction Specifications • Current output settling time: Time required to reach within 0.1 % (0.3 % for 3 A range) of final value at short condition. Step is +10 % to +90 % range. 10 nA and 100 nA ranges: < 10 ms 1 A range: < 500 s 10 A and 100 A ranges: < 250 s 1 mA to 3 A ranges: < 80 s • Noise 10 Hz to 20 MHz (V source): 3 mVrms, 20 V range • V source overshoot: < (0.1 % + 10 mV) Step is +10 % to +90 % range, resistive load. • I source overshoot: < 0.1 % (0.
Introduction Specifications Measurement Supplemental Characteristics • Temperature coefficient (0 C to 18 C and 28 C to 50 C): (0.1 Accuracy specification) / C • Over range: 102 % of measurement range for 1.5 A and 3 A ranges. 106 % of measurement range other than 1.5 A and 3 A ranges. • Voltage measurement range change overshoot: < 250 mV.
Introduction Specifications Table 2-12 Maximum Duty Cycle and Pulse Width Maximum duty cycle Pulse width Maximum voltage Maximum peak current Maximum base current 99.9999 % 50 s to 99999.9 s 6V 3.03 Aa 3.03 Aa 21 V 1.515 Aa 1.515 Aa 210 V 0.105 A 0.105 A 50 s to 1 ms 6V 10.5 A 500 mA 50 s to 10 ms 180 V 1.05 A 50 mA 50 s to 2.5 ms 200 V 1.515 A 50 mA 2.5 % a. Max current limitation: For 21 V/1.515 A and 6 V/3.
Introduction Specifications Other Supplemental Characteristics Output Characteristics • Sensing modes: 2-wire or 4-wire (remote-sensing) connections • Low terminal connection: Chassis grounded or floating • Output connectors: Banana jack. Triaxial connections are recommended for sourcing and measuring less than 1 nA. A banana jack to triaxial adapter is available for low current measurement. • Output location: Channel 1 at front and channel 2 at rear • Maximum load: • Normal mode: 0.
Introduction Specifications High Capacitance Mode The high capacitance mode permits the measurement of devices with capacitances greater than the normal mode maximum load value of 0.01 F. In high capacitance mode, the maximum allowed value of the load capacitance is 50 F. • Voltage output settling time: Time required to reach within 0.1 % of final value with 4.7 F capacitive load on a fixed range at specified current limit value. 200 mV and 2 V Ranges: 600 s, at 1 A limit 20 V Range: 1.
Introduction Specifications • High Capacitance mode working conditions: • V/I mode: Voltage source mode only • Range: Current measurement range is limited to fixed range only. 10 nA and 100 nA ranges are not available. • Current limit: 1 A Resistance Measurement Resistance measurement can be performed under either auto or manual test conditions. Auto resistance measurement is performed in current source and voltage measurement mode.
Introduction Specifications Table 2-15 Table 2-16 Typical Performance of Auto Resistance Measurement (4-wire), 2 V range Range Display resolution Test current Current range Total error (% reading + offset) 2 1 1A 1A 0.2 % + 0.00035 20 10 100 mA 100 mA 0.06 % + 0.0035 200 100 10 mA 10 mA 0.065 % + 0.035 2 k 1 m 1 mA 1 mA 0.06 % + 0.35 20 k 10 m 100 A 100 A 0.065 % + 3.5 200 k 100 m 10 A 10 A 0.06 % + 35 2 M 1 1 A 1 A 0.
Introduction Specifications General Specifications • Environment For use in indoor facilities • • • Temperature range Operating 0 C to +55 C Storage -30 C to +70 C Humidity range Operating 30 % to 80 %RH, non-condensing Storage 10 % to 90 %RH, non-condensing Altitude Operating 0 m to 2,000 m (6,561 ft.) Storage 0 m to 4,600 m (15,092 ft.) • Power requirement: 90 V to 264 V, 47 Hz to 63 Hz • Maximum volt-amps (VA): 250 VA • Cooling Forced air. Side intake and rear exhaust.
Introduction Operation and Functions Operation and Functions Front Panel Interface 4.3” color TFT WQVGA (480272, with LED backlight) provides a graphical user interface (GUI) with the following features. • 4-view modes (Single, Dual, Graph, Roll view) • Easy-to-use key operations • Easy access to basic and advanced source/measurement capabilities Single view Single view provides basic and advanced settings and display capabilities for the selected channel from the front panel of the instrument.
Introduction Operation and Functions Easy Access to Source/Measurement Capabilities • • • • Settings: • V/I source mode • Source value • Limit (Compliance) value • Sweep parameters • Pulse parameters • Measure speed • Range setting • Trigger setting Result Displays: • Numeric results fully up to 6½ digits both in Single and Dual view modes • Characterization in Graph view and Roll view • Data list Advanced Capabilities: • Limit testing by user definable limits working with compon
Introduction Operation and Functions Source/Measurement Capabilities Sweep Measurement • Number of steps: 1 to 2500 • Sweep mode: linear, logarithmic (log), or list • Sweep direction: single or double • Type: DC or pulse • Minimum programmable value to create list sweep waveform: B2901A/B2902A: 20 s with 1 s resolution B2911A/B2912A: 10 s with 1 s resolution Digitizing/Sampling Measurement Digitizing/sampling measurement can be performed by appropriate setting of measure speed and trigger int
Introduction Operation and Functions Program and Interface Capabilities Programming Language The B2900 supports SCPI (Standard Commands for Programmable Instruments). • Default command set: Supports all of the advanced features of the B2900. • Conventional command set: Supports industry standard conventional SCPI command set for basic compatibility.
Introduction Operation and Functions Digital I/O Interface • Connector: 25-pin female D • Input/output pins: 14 open drain I/O bits • Absolute maximum input voltage: 5.25 V • Absolute minimum input voltage: -0.25 V • Maximum logic low input voltage: 0.8 V • Minimum logic high input voltage: 2.
Introduction Software and Drivers Software and Drivers • Agilent B2900A Quick I/V Measurement Software The B2900 includes PC-based Agilent B2900A Quick I/V Measurement Software. This powerful software makes it easy to quickly setup and perform I/V measurements and to display the measurement data in a table or graph without the need to perform any programming. The software allows you to control up to four SMU channels over a GPIB or LAN connection, or one B2900 unit via a USB connection.
Introduction Accessories Accessories Furnished Accessories The Agilent B2900 is furnished with the following accessories. • Quick Reference, 1 ea. • Product Reference CD-ROM, 1ea. • Agilent IO Libraries CD-ROM, 1ea. • Power cord, 1 ea. • USB cable, 1 ea. The Product Reference CD-ROM stores Agilent B2900A Quick I/V Measurement Software, sample programs, user manuals, and application notes. Available Accessories Table 2-17 lists the available accessories for the Agilent B2900.
Introduction Accessories Model Number Option Item 16442B Description Test Fixture 16442B-010 Add triaxial cables, 1.5 m, 4 ea. 16442B-011 Add triaxial cables, 3 m, 4 ea. 16442B-800 Extra blank Teflon board 16442B-801 Universal socket module, 0.1 inch pitch, with 10 pins 16442B-802 Universal socket module, 0.075 inch pitch, with 10 pins 16442B-803 Universal socket module, 0.05 inch pitch, with 10 pins 16442B-810 Extra pin set (for universal socket module, 10 pins.
Introduction Options Options Table 2-18 lists the options for the Agilent B2900.
3 Installation
Installation This chapter describes how to install Agilent B2900 and accessories and consists of the following sections. WARNING • “Inspecting the Shipment” • “Installing the Agilent B2900” • “Maintenance” • “Connecting a DUT” • “Installing the Interlock Circuit” • “Connecting to the Interfaces” • “Communicating Over the LAN” • “Using Digital I/O” There are potentially hazardous voltages (210 V) present at the High Force, High Sense, and Guard terminals of Agilent B2900.
Installation Inspecting the Shipment Inspecting the Shipment Perform the following inspections when the Agilent B2900 and accessories arrive at your site. 1. Before unpacking any component, inspect all boxes for any signs of damage that might have occurred during shipment, such as: • dents • scratches • cuts • water marks If you suspect any damage, contact your nearest Agilent Sales and Support Office. 2.
Installation Inspecting the Shipment Figure 3-1 Display Example for 1-ch Model Figure 3-2 Display Example for 2-ch Model Checking for Errors Errors can be checked as described below. 1. Press the More > System > Error > Log function keys. This opens the Error Log dialog box. 2. Check the errors displayed on the dialog box. If no error is detected, “0, No Error” is displayed. 3. Press the OK softkey to close the dialog box.
Installation Installing the Agilent B2900 Installing the Agilent B2900 This section describes information you must pay attention to when installing the Agilent B2900. • “Safety Considerations” • “Environment” • “Connecting the Power Cord” • “Setting the Power Line Frequency” • “Bench Installation” • “Rack Installation” Safety Considerations Refer to the Safety Summary page at the beginning of this guide for general safety information.
Installation Installing the Agilent B2900 SHOCK HAZARD: The power cord provides the chassis ground through a third conductor. Be sure to connect to a three-conductor type power outlet with the correct pin grounded. NOTE The detachable power cord may be used as an emergency disconnecting device. Removing the power cord will disconnect AC input power to the instrument. Connect the power cord to the IEC 320 connector on the rear of the instrument.
Installation Installing the Agilent B2900 Rack Installation NOTE Use the Rack Mount kit (Option 1CM) to rack mount the Agilent B2900. Agilent B2900 can be mounted in a 19-inch EIA rack cabinet. It is designed to fit in two rack-units (2U) of space. Remove the front and rear rubber bumpers and the handle before rack mounting the B2900. Do not block the air intake at the sides and the exhaust at the rear of the B2900. Removing the Bumper Stretch a corner of the rubber bumper and slide it off.
Installation Maintenance Maintenance Maintenance should be performed periodically to keep the Agilent B2900 in good condition. If problems arise, contact your nearest Agilent Sales and Support Office. • “Cleaning” • “Self-test” • “Self-calibration” • “Calibration” Cleaning WARNING SHOCK HAZARD: To prevent electric shock, unplug the B2900 before cleaning. Use a dry cloth or a cloth slightly dampened with water to clean the external case parts. Do not use detergents or chemical solvents.
Installation Maintenance 1. If it is in the remote state, press the Cancel / Local key. 2. Press the On/Off switch and confirm that the switch turns off. 3. Disconnect test leads and cables from the channel terminals. 4. Press the following function keys. More > System > Cal/Test > Self-Test Confirmation dialog box is opened. 5. Press the OK key. This starts the self-test. Self-calibration Agilent B2900 provides the self-calibration function to maintain the measurement performance.
Installation Connecting a DUT Connecting a DUT This section describes how to connect a device under test (DUT) to the Agilent B2900 source/measure terminals. NOTE Set the channel output off when changing the connections. If not, the DUT may be damaged. To set the channel output off, press the On/Off switch and confirm that the switch LED turns off. This section includes the following descriptions.
Installation Connecting a DUT 2-Wire Connections or 4-Wire Connections When connecting a DUT, you can choose the connection type either 2-wire connections or 4-wire connections. If you want to simplify the connections, use 2-wire connections by connecting the Force terminals only and opening the Sense terminals. The Force terminals can be used to apply and measure DC voltage or current. To make 4-wire connections, remote sensing, well known as Kelvin connections, use both Force and Sense terminals.
Installation Connecting a DUT Floating With the default setting, Low Force and Low Sense terminals are connected to the chassis ground. However, they can be disconnected from the ground for floating measurements. To specify the low terminal status, perform the following procedure. Setting is not saved. Turning off the instrument sets the status to the grounded. 1. Press the Config > Source > Connection function keys. This opens the Output Connection dialog box. 2.
Installation Connecting a DUT Using Test Leads B2900 source/measure terminals use banana jacks. For connecting a DUT, the following test leads are available. Figure 3-5 shows the connections for two-terminal device measurements. • Agilent U8201A Combo Test Lead Kit Couple of test leads, test probes, alligator clips, SMT grabbers, fine-tips test probes, and banana plugs, CAT III 1000 V, 15 A maximum Two kits are required for 4-wire connections.
Installation Connecting a DUT Using the N1295A Test Fixture Agilent N1295A is a test fixture which has four triaxial connectors and which supports two 2-wire connections. Requirements Connections • Agilent N1295A test fixture furnished with pin clip wire 4 ea. and pin plug wire 2 ea. • Agilent N1294A-001 banana to triaxial adapter for 2-wire connections • Triaxial cable, 2 ea. for one 2-wire connection 1. Attach the banana to triaxial adapter to the B2900 source/measure terminals.
Installation Connecting a DUT CAUTION Maximum voltage and current The test fixture and adapters must be used under the following limitations to prevent damage. Agilent N1294A-001: 250 V maximum, 42 V maximum for connecting N1295A Agilent N1294A-002: 250 V maximum, 42 V maximum for connecting N1295A Agilent N1295A: 42 V, 1.
Installation Connecting a DUT Connections 1. Attach the banana to triaxial adapter to the B2900 source/measure terminals. See Figure 3-6. If there is some space as “Bad connection”, the contact is not enough. 2. Connect the triaxial cables between the adapter and the 16442B. Figure 3-8 shows a connection example. 3. Connect the DUT on the 16442B wiring panel by using the 16442B’s furnished accessories, socket module, blank board, and wire suitable for the DUT.
Installation Connecting a DUT NOTE Performing high voltage measurement When the Digital I/O interlock terminal is open, B2900 cannot apply high voltage over 42 V. To perform high voltage measurements, B2900 must be connected to the interlock circuit installed in 16442B. Prepare the N1294A-011 or 012 interlock cable, and connect it between the B2900 Digital I/O connector and the 16442B Intlk connector. B2900 can apply a high voltage when the test fixture lid is closed.
Installation Connecting a DUT Guarding Guarding reduces the leakage current between the instrument and a DUT. This is important when you measure a low current. Figure 3-10 shows the theory of guarding. The buffer amplifier (1) keeps the potential of the Guard conductor at the same potential as the High Force conductor, so that the current does not flow between the High Force and Guard conductors.
Installation Installing the Interlock Circuit Installing the Interlock Circuit The interlock circuit is a simple electric circuit, as shown in Figure 3-11. The circuit electrically opens when an access door is opened, and closes when the door is closed. B2900 cannot apply high voltages over 42 V when the Digital I/O interlock terminal is open.
Installation Installing the Interlock Circuit Procedure 1. Mount two mechanical switches onto your shielding box, so that the switches close when the access door is closed, and open when the door is opened. See Figure 3-13 and Figure 3-14 for the switch dimensions. 2. Mount an LED onto your shielding box. See Figure 3-12 for the LED dimensions. The LED is used as a high voltage indicator which is lit when B2900 is in the high voltage output status. 3. Mount a D-sub connector onto your shielding box. 4.
Installation Installing the Interlock Circuit Figure 3-13 Dimensions of the Interlock Switch (Agilent part number 3101-0302) 1& 0D[ 6ZLWFK RQ 6ZLWFK RII 12 & 20 8QLWV PP Figure 3-14 Dimensions of the Interlock Switch (Agilent part number 3101-3241) 6ZLWFK RII 6ZLWFK RQ 8QLWV PP Agilent B2900 User’s Guide, Edition 2 3- 21
Installation Connecting to the Interfaces Connecting to the Interfaces CAUTION Electrostatic discharges greater than 1 kV near the interface connectors may cause the unit to reset and require operator intervention. B2900 supports GPIB, LAN, and USB interfaces. All three interfaces are live at power-on. Connect your interface cable to the appropriate interface connector. Information on configuring the interfaces can be found later in this section.
Installation Connecting to the Interfaces 1. If you have not already done so, install the Agilent IO Libraries Suite from the CD shipped with your product. 2. If you do not have a GPIB interface card installed on your computer, turn off your computer and install the GPIB card. 3. Connect your instrument to the GPIB interface card using a GPIB interface cable. 4. Use the Connection Expert utility from the Agilent IO Libraries Suite to configure the installed GPIB interface card’s parameters. 5.
Installation Connecting to the Interfaces You can also view the instrument’s VISA address from the front panel. Press the More function key, then the I/O > USB softkeys. The VISA address is shown in the USB Status dialog box. 4. You can now use the Interactive IO within Connection Expert to communicate with your instrument, or program your instrument using various programming environments.
Installation Connecting to the Interfaces NOTE If you need to manually configure any instrument LAN settings, see “LAN Configuration dialog box” on page 4-46 for information about configuring the LAN settings from the front panel of the instrument. 3. Use the Connection Expert utility from the Agilent IO Libraries Suite to add the B2900 and verify the connection. To add the instrument, you can request Connection Expert to discover the instrument.
Installation Communicating Over the LAN Communicating Over the LAN Using the Graphical Web Interface Your Agilent B2900 Source/Measure Unit has a built-in graphical web interface that lets you control it directly from an Web browser on your computer. Multiple simultaneous connections are allowed, but only from one computer. With additional connections, performance will be reduced. Multiple connections from multiple computers are not allowed.
Installation Communicating Over the LAN To launch the graphical web interface: 1. Open a Web browser on your computer. 2. Enter the instrument’s hostname or IP address into the browser’s Address field to launch the graphical web interface. The B2900 home page will appear. 3. Click on the Browser Web Control button in the navigation bar on the left to begin controlling your instrument. 4. For additional help about any page, click “Help with this Page”.
Installation Communicating Over the LAN Once the port number is obtained, a control socket connection can be opened. As with the data socket, all commands to the control socket must be terminated with a newline, and all query responses returned on the control socket will be terminated with a newline. To send a device clear, send the string “DCL” to the control socket. When the B2900 has finished performing the device clear, it will echo the string “DCL” back to the control socket.
Installation Using Digital I/O Using Digital I/O B2900A has a Digital I/O connector, D-sub 25 pin female, for general purpose input/output (GPIO).
Installation Using Digital I/O Table 3-1 Digital I/O Pin Assignment Description Pin Number Description +5 V a 25 13 DIO 13 (bit 13) Interlock control b 24 12 DIO 12 (bit 12) +5 V a 23 11 DIO 11 (bit 11) +5 V a 22 10 DIO 10 (bit 10) GND 21 9 DIO 9 (bit 9) GND 20 8 DIO 8 (bit 8) GND 19 7 DIO 7 (bit 7) GND 18 6 DIO 6 (bit 6) GND 17 5 DIO 5 (bit 5) Interlock control c 16 4 DIO 4 (bit 4) GND 15 3 DIO 3 (bit 3) DIO 14 (bit 14) or High voltage status 14 2 DIO 2 (b
4 Front Panel Reference
Front Panel Reference This chapter provides the reference information of the Agilent B2900 front panel keys and display. NOTE • “Hard Keys and Rotary Knob” • “Display and Assist Keys” • “Function Keys” • “Config key group” • “Function key group” • “Trigger key group” • “Result key group” • “File key group” • “Program key group” • “I/O key group” • “Display key group” • “System key group” If measurement is not performed properly, check the trigger setting.
Front Panel Reference Hard Keys and Rotary Knob Hard Keys and Rotary Knob Line switch Turns the instrument on or off. Trigger Starts a single (one shot) measurement or initiates trigger system. If a repeat (continuous) measurement is in progress, stops the repeat measurement. The single measurement is performed with the DC bias output, staircase sweep output, pulsed bias output, or pulsed sweep output set to the channel. One single measurement can contain the maximum of 100000 measurement points.
Front Panel Reference Hard Keys and Rotary Knob Cancel / Local Cancels the setup operation if the instrument is in the local status. Returns the instrument to the local status if it is in the remote status. On/Off Used to enable or disable the SMU channel. Turns the channel off if it is in the output status even if it is in the remote status. One switch on 1-channel models, and two switches on 2-channel models. The switch turns green if the channel is enabled.
Front Panel Reference Display and Assist Keys Display and Assist Keys Agilent B2900 provides several display modes which depend on the model as shown below. The display mode is changed by the View key. Pressing the key changes the mode as shown below.
Front Panel Reference Display and Assist Keys Dual View Available on B2902A and B2912A. The upper half is for channel 1. The lower half is for channel 2. Each area displays the measurement results, source and measurement settings, and channel status. Most setup parameters can be edited on this display. 1 2 3 4 5 6 7 8 D1 D2 D1 D2 Display area 1. Channel number. 1 or 2. 2. Latest measurement data 3. High capacitance (HC) mode indicator 4. Remote sensing (4-wire connection) status indicator 5.
Front Panel Reference Display and Assist Keys Assist keys In the following descriptions, Ch n indicates Ch 1 or Ch 2. Ch n Mode Changes the assist keys to VOLTS (V) and AMPS (I) used to select the source function. VOLTS (V) sets the voltage source. AMPS (I) sets the current source. Ch n Source Changes the assist keys to the unit keys shown below.
Front Panel Reference Display and Assist Keys Single View Displays the measurement results, source and measurement settings, and channel status. Most setup parameters can be edited on this display. The lower half displays the setup parameters selected by Assist keys 2. 1 2 3 4 5 6 7 8 D1 D2 10 9 Display area 1. Channel number. 1 or 2. 2. Latest measurement data 3. High capacitance (HC) mode indicator 4. Remote sensing (4-wire connection) status indicator 5. Source function. VOLTS or AMPS. 6.
Front Panel Reference Display and Assist Keys Assist keys 1 Mode Changes the assist keys to VOLTS (V) and AMPS (I) used to select the source function. VOLTS (V) sets the voltage source. AMPS (I) sets the current source. Source Changes the assist keys to the unit keys shown below. mV and V for the voltage source nA, A, mA, and A for the current source First, enter or set the output value by using the numeric/alpha keys, rotary knob, and arrow keys. Then press one of the unit keys to apply the value.
Front Panel Reference Display and Assist Keys Assist keys 2 Speed Changes the assist keys to AUTO (1 PLC for 10 nA and 100 nA ranges, 0.01 PLC for other ranges), SHORT (0.01 PLC), MEDIUM (0.1 PLC), NORMAL (1 PLC), LONG (10 PLC), or MANUAL used to select the measurement speed. The aperture time is automatically set to the above values in parentheses. For the aperture time, see “Measurement Time” on page 6-5.
Front Panel Reference Display and Assist Keys Range parameters The following setup parameters are available. Source or Measure XXXX is decided by the source setting. Source Volts: Spot For the voltage source. Selects the range operation AUTO or FIXED for the constant voltage output and the source side voltage measurement. Measure Amps For the voltage source. Selects the range operation AUTO or FIXED for the current measurement. Source Amps: Spot For the current source.
Front Panel Reference Display and Assist Keys Sweep parameters B2900 can be used as a sweep source, and supports the following sweep operations. The operation can be selected by using the assist keys displayed when the field pointer is in the EDIT (green) status on the Sweep Parameters field.
Front Panel Reference Display and Assist Keys Edit Opens the List Sweep dialog box used to set the list sweep source. Load Opens the Load List Sweep Data dialog box used to load a list sweep data from a USB memory connected to the front panel USB-A connector. • List Sweep dialog box This dialog box provides the following GUI for setting the list sweep source. Data resolution is 6 digits on B2901A/B2902A, and 7 digits on B2911A/B2912A.
Front Panel Reference Display and Assist Keys Pulse parameters B2900 can be used as a pulse source, and supports pulsed output and measurement. Pulse ON or OFF can be selected by using the assist keys displayed when the field pointer is in the EDIT (green) status on the Pulse field. The following setup parameters are available. Peak Sets the pulse peak value. Not available for the sweep source which sets the sweep output value to the pulse peak.
Front Panel Reference Display and Assist Keys Trigger parameters The B2900 supports the following trigger types for triggering source output and measurement. They are effective for setting triggers easily. The trigger type can be selected by using the assist keys displayed when the field pointer is in the EDIT (green) status on the Trigger field. See Table 4-1 for the trigger types and the setup parameters.
Front Panel Reference Display and Assist Keys Table 4-1 Trigger Types and Setup Parameters Type Count Delay Period Trigger AUTO set automatically 0 second N.A. AUTO SYNC entered value entered value N.A. AUTO TIMER entered value entered value entered value TIMER MANUAL entered value entered value entered value selected value Trigger=AUTO automatically selects the trigger source best suited for the present operating mode by using internal algorithms.
Front Panel Reference Display and Assist Keys Graph View Displays the graph for plotting the channel 1 and/or 2 measurement or math result. The Graph view can plot up to 5000 data. 1 2 3 4 5 10 9 6 8 7 Display area 1. Graph display status ON or OFF. Only on 2-channel models. [n] is for channel n. 2. Y-axis data type I (A), V (V), R (), P (W), or MATH (see Table 4-2) 3. Y-axis scale LINEAR or LOG 4. X-axis data type I (A), V (V), R (), P (W), MATH, t (s), V1, or V2 (see Table 4-2) 5.
Front Panel Reference Display and Assist Keys Second line Table 4-2 Assist keys Positions and distance (e.g. t1, t2, t) of X-cursors 1 and 2 X and Y Axes Data Types for Graph View Data type Assist key Description I (A) AMPS (I) Current data V (V) VOLTS (V) Voltage data R () OHMS (R) Resistance data P (W) WATTS (P) Power data MATH MATH t (s) TIME (t) V1 Ch 1 V (V1) V2 Ch 2 V (V2) Math result data Time data. Only for the X-axis data. Only on 2-channel models.
Front Panel Reference Display and Assist Keys NOTE If the number of data exceeds 5000 If the number of measurement data exceeds 5000, the Graph view and the Roll view plot the following data. where, n is integer, 1 to 5000. Number of data is 5001 to 10000: [2*(n-1)+1]th data Number of data is 10001 to 25000: [5*(n-1)+1]th data Number of data is 25001 to 50000: [10*(n-1)+1]th data Number of data is 50001 to 100000: [20*(n-1)+1]th data Roll View Available on B2911A and B2912A.
Front Panel Reference Display and Assist Keys 3. Y-axis scale per division A/div., V/div., /div., or W/div. 4. X-axis scale per division s/div. 5. X-axis minimum value (minimum timestamp) 6. Y-axis offset values for line 1 and 2 7. X-axis maximum value (maximum timestamp) 8. Channel 1 and/or 2 source output value, limit value, or none (controlled by the Ch n Source, Ch n Limit, or Hide Ch n assist key) 9. Channel 1 and/or 2 Y-axis data at the active X-cursor position. ----.
Front Panel Reference Display and Assist Keys Hide Ch n Hides the channel n limit value and changes the softkey label to Ch n Source. In the above descriptions, Ch n indicates Ch 1 or Ch 2.
Front Panel Reference Display and Assist Keys Status Information The status information is common for all display modes. It is displayed above the bottom softkeys associated with the function keys. Table 4-4 Status Indicator Label Color Description AUTO white Trigger auto. Automatic trigger is enabled now. ARM white Trigger active. Trigger system is active now. HV yellow High voltage. Output voltage setting is over 42 V. Channel 1 floating status. Channel 1 is not grounded.
Front Panel Reference Function Keys Function Keys Agilent B2900 has six function keys below the front panel display, and provides the following nine softkeys. Function keys 1 Function keys 2 Config SMU configuration setup. Displays the softkeys for setting several functions of the SMU. See “Config key group” on page 4-24. Function Math, limit test, and trace function setup. Displays the softkeys for setting these functions. See “Function key group” on page 4-30.
Front Panel Reference Config key group Config key group Pressing the Config key displays the following three softkeys for setting several functions of the SMU. Source Measure Displays the following three softkeys for setting the SMU source operation. Connection Channel operation and connection setup. See “Output Connection dialog box” on page 4-25. Filter Output filter setup. See “Output Filter dialog box” on page 4-26. Sweep Sweep source detail setup. See “Sweep dialog box” on page 4-27.
Front Panel Reference Config key group Output Connection dialog box This dialog box provides the following parameters for setting the channel operation and connection. Ch Only on 2-channel models. Channel 1 (Ch 1) or 2 (Ch 2) This field specifies the channel set by this dialog box. Sensing Type Sensing type, 2-wire connection (2-WIRE) or 4-wire connection (4-WIRE). Set 4-WIRE for remote sensing.
Front Panel Reference Config key group Output Filter dialog box This dialog box provides the following parameters for setting the output filter. Ch Only on 2-channel models. Channel 1 (Ch 1) or 2 (Ch 2) This field specifies the channel set by this dialog box. Filter State Output filter, ON or OFF Set the filter ON to obtain clean source output without spikes and overshooting. Note, however, that using a filter may increase the SMU settling time.
Front Panel Reference Config key group Sweep dialog box This dialog box provides the following parameters for setting details of the sweep source operation. Ch Only on 2-channel models. Channel 1 (Ch 1) or 2 (Ch 2) This field specifies the channel set by this dialog box. Sweep Ranging Sweep source range operation, BEST, AUTO, or FIXED. See Table 4-5 on page 4-27.
Front Panel Reference Config key group Ranging dialog box This dialog box provides the following parameters for setting details of the auto ranging operation for measurements. Ch Only on 2-channel models. Channel 1 (Ch 1) or 2 (Ch 2) This field specifies the channel set by this dialog box. Table 4-6 Current Auto Ranging Current measurement auto range operation, NORMAL, SPEED, or RESOLUTION (RESOLN). See Table 4-6.
Front Panel Reference Config key group Wait Control dialog box This dialog box provides the following parameters for setting the source and measurement wait time. The source wait time is defined as the time the source channel cannot change the output after the start of a DC output or the trailing edge of a pulse. The measurement wait time is defined as the time the measurement channel cannot start measurement after the start of a DC output or the trailing edge of a pulse. Ch Only on 2-channel models.
Front Panel Reference Function key group Function key group Pressing the Function key displays the following three softkeys for setting the math, limit test, and trace functions. Math Math function setup. See “Math Expression dialog box” on page 4-30. Limit Test Displays the following two softkeys for setting the limit test function. Trace Composite Composite limit test setup. See “Composite Limit Test Setup dialog box” on page 4-31. Limits Limit test setup.
Front Panel Reference Function key group Composite Limit Test Setup dialog box This dialog box provides the following parameters for setting the limit test. Ch Only on 2-channel models. Channel 1 (Ch 1) or 2 (Ch 2) This field specifies the channel set by this dialog box. Limit Test Composite limit test, ON or OFF Mode Operation mode, GRADING (GRADE) or SORTING (SORT) GRADING: Grading mode. See Figure 6-5 for the operation. SORTING: Sorting mode. See Figure 6-6 for the operation.
Front Panel Reference Function key group NOTE Values of GPIO Pins, /BUSY, /SOT, and /EOT 0 to 14 (integer). Numbers 1 to 14 indicate the DIO pins 1 to 14, respectively. 0 indicates that it is not used. For GPIO Pins, multiple continuous pins are assigned. For example, “1, 2, 3, 4” indicates that the DIO pins 1 to 4 are assigned. Then LSB is DIO pin 1. Limit Test Setup dialog box This dialog box provides the following parameters for setting the limit test, which is a part of the composite limit test.
Front Panel Reference Function key group Fail on=IN judges limit test failure if the channel goes into the compliance state. Fail on=OUT judges limit test failure if the channel comes out of the compliance state. Fail Pattern Only for compliance check. Bit pattern for the limit test fail state. Up Pattern Not available for compliance check. Bit pattern for the failed-by-exceeding-upper-limit state. Used for the GRADING mode. Up Limit Not available for compliance check.
Front Panel Reference Function key group Trace Buffer Setup dialog box This dialog box provides the following parameters for setting the trace function. The data specified by the Feed Data parameter can be stored in the trace buffer if the Buffer Control parameter is NEXT. The maximum data size is specified by the Buffer Size parameter. See Figure 6-7 on page 6-24 for the trace buffer. Ch Only on 2-channel models. Channel 1 (Ch 1) or 2 (Ch 2) This field specifies the channel set by this dialog box.
Front Panel Reference Trigger key group Trigger key group Pressing the Trigger key displays the following four softkeys for setting the trigger parameters in detail and controlling the trigger system. See Figure 6-8 on page 6-28. Config Opens a dialog box. See “Trigger Configuration dialog box” on page 4-36. Initiate Displays the softkeys for selecting the device action to initiate (to go to the arm layer of the trigger system). See Table 4-7.
Front Panel Reference Trigger key group Trigger Configuration dialog box This dialog box is used to set the trigger parameters in detail. Note that the overlapped parameter values are ignored and replaced with the settings made on the Single view. See “Trigger parameters” on page 4-15. Ch Only on 2-channel models. Channel 1 (Ch 1) or 2 (Ch 2) This field specifies the channel set by this dialog box. Layer Specifies the layer or device action set by this dialog box.
Front Panel Reference Trigger key group Trigger Output Trigger output, ON or OFF If this parameter is ON, B2900 sends an output trigger when it changes the trigger state for the action specified by the Ch, Layer, and Action parameters. See Figure 6-8 on page 6-28. Also see “DIO Configuration dialog box” on page 4-46 for details on setting the trigger output timing. The right field of the Trigger Output entry field shows the present setting of the trigger output terminal.
Front Panel Reference Result key group Result key group Pressing the Result key displays the following three softkeys for displaying the measurement, limit test, and trace results. Measure Displays the measurement result. See “Measure Result dialog box” on page 4-38. Limit Test Displays the limit test result. See “Limit Test Result dialog box” on page 4-39. Trace Displays the trace result. See “Trace Statistical Result dialog box” on page 4-40.
Front Panel Reference Result key group Max. Y-axis maximum value of the graph. Min. Y-axis minimum value of the graph. Limit Test Result dialog box This dialog box provides the following GUI for displaying the limit test result. The result data is shown in the data list area below the Length field. Ch Only on 2-channel models. Channel 1 (Ch 1) or 2 (Ch 2) This field specifies the channel of the data to display. Length Data length The limit test data contains the following information.
Front Panel Reference Result key group Trace Statistical Result dialog box This dialog box provides the following GUI for displaying the trace statistical result. The result data is displayed in the Mean, Std. Dev., Min., and Max. fields. Ch Only on 2-channel models. Channel 1 (Ch 1) or 2 (Ch 2) This field specifies the channel of the data to display.
Front Panel Reference File key group File key group Pressing the File key displays the following two softkeys for saving a file on and loading a file from a USB memory connected to the front panel USB-A connector. Save Load Displays the following five softkeys for saving a file. Pressing a softkey displays the File Selection dialog box. See “File Selection dialog box” on page 4-41. Measure Saves a measurement data file. Math Saves a math result data file.
Front Panel Reference Program key group Program key group Pressing the Program key displays the following four softkeys for setting and controlling the program memory. The program memory can be defined by using the SCPI commands while the B2900 is in the remote mode. Catalog Displays the Program Catalog dialog box which lists the programs saved in the program memory. This dialog box is also used to specify the memory program to use. To select a memory program, highlight its name in this list.
Front Panel Reference I/O key group I/O key group Pressing the I/O key displays the following five softkeys for setting the I/O interfaces. Format Displays the five softkeys for setting the data output format. See “Data Output Format” on page 4-44. LAN Displays the following four softkeys for managing the LAN interface. Config Displays the LAN Configuration dialog box used to set the configuration of the LAN interface. See “LAN Configuration dialog box” on page 4-46.
Front Panel Reference I/O key group Data Output Format Pressing the Format softkey displays the following five softkeys for setting the format and elements of the output data. Measure Displays the Format (Measure) dialog box used to set the elements of the measurement data output. See “Format (Measure) dialog box” on page 4-44. Math/Limit Displays the Format (Math/Limit) dialog box used to set the elements of the math result data output and the limit test result data output.
Front Panel Reference I/O key group Resistance Resistance data output, ON or OFF Source Source data output, ON or OFF Time Time data output, ON or OFF Status Status data output, ON or OFF Format (Math/Limit) dialog box This dialog box provides the following parameters for setting the elements of the math result data output and the limit test result data output.
Front Panel Reference I/O key group LAN Configuration dialog box This dialog box provides the following parameters for setting the configuration of the LAN interface. mDNS mDNS (multicast DNS) status, ON or OFF IP Address Config. IP address configuration, AUTO or MANUAL AUTO configuration uses the DHCP server.
Front Panel Reference I/O key group Output Trigger Type Type of output trigger, edge (EDGE) or level (LEVEL) Output Trigger Timing Timing of the output trigger, after action (arm, trigger, and device action) (AFTER), before action (BEFORE), or both (BOTH) Output Pulse Width Pulse width of the output trigger, 10 s to 10 ms For more information about the trigger function, see “Trigger key group” on page 4-35.
Front Panel Reference Display key group Display key group Pressing the Display key displays the following four softkeys for setting the display functions. The present setting is indicated by an asterisk on the softkey label. Remote Color Zoom Displays the following two softkeys for enabling or disabling the front panel display when the B2900 is in the remote mode. OFF Disables the front panel display. Effective for fast operation. ON Enables the front panel display.
Front Panel Reference System key group System key group Pressing the System key displays the following nine softkeys used for several system setups. Error Reset Displays the following two softkeys to view or clear errors. Log Displays the Error Log dialog box which displays the SCPI errors. Clear Clears the error buffer immediately. Initializes the B2900. Pressing the Reset softkey displays a confirmation dialog box. Press the OK softkey to start initialization, or the Cancel/Local key to cancel.
Front Panel Reference System key group Start-up Displays the System Start-up dialog box which provides the following setup parameters. Power-on State Power-on state, RST, RCL0, RCL1, RCL2, RCL3, or RCL4 The power-on state can be selected from the factory default reset condition (RST) and user conditions RCL0, RCL1, RCL2, RCL3, and RCL4 which can be defined by using the *SAV 0, *SAV 1, *SAV 2, *SAV 3, and *SAV 4 commands, respectively, while the B2900 is in the remote mode.
5 Front Panel Operations
Front Panel Operations This chapter explains how to use the Agilent B2900. NOTE • “Basic Operations” • “Configuring Various Settings” • “Controlling the Source Output” • “Controlling the Measurement Function” • “Using the Math Function” • “Performing the Limit Test” • “Using the Trace Buffer” • “Using Program Memory” Turning the instrument on or off Press the line switch. When the power is on, the LED below the switch is turned green.
Front Panel Operations Basic Operations Basic Operations Use the field pointer to specify a setup field in the setup screen. The field pointer can take the following states. Change the status as needed during the setup of B2900. MOVE status Highlighted in blue. You can move the pointer from field to field. EDIT status Highlighted in green. You can change the value of the current field. Changing the Setting in a Field 1. If the field pointer is in the EDIT status, press the rotary knob.
Front Panel Operations Basic Operations Changing the Settings on a Dialog Box 1. Set the items on the dialog box in the same way as described in “Changing the Setting in a Field” on page 5-3. 2. To apply the settings, press Apply. To apply all settings and close the dialog box, press OK. To cancel the setting change, press the Cancel/Local key instead of pressing Apply.
Front Panel Operations Configuring Various Settings Configuring Various Settings This section describes how to configure various settings apart from the source output and measurement functions.
Front Panel Operations Configuring Various Settings Setting the Beeper 1. Press the More > System > More > Sound function keys. 2. To enable the beeper, press ON. To disable it, press OFF. To cancel the setting change, press the Cancel/Local key. Setting the Date and Time 1. Press the More > System > More > Info. function keys. 2. Press Date/Time. The Date and Time dialog box is displayed. 3. Set the date and time. 4. To apply the settings, press Apply.
Front Panel Operations Configuring Various Settings 4. Press OK to perform the self-calibration. To cancel the operation, press the Cancel/Local key. Setting the Operations at Power On 1. Press the More > System > More > Start-up function keys. The System Start-up dialog box is displayed. 2. See “Start-up” on page 4-50 to set each parameter. Displaying the Error Message 1. Press the More > System > Error function keys. 2. Press Log. The error message is displayed in the Error Log dialog box. 3.
Front Panel Operations Configuring Various Settings Displaying the Firmware Revision 1. Press the More > System > More > Info. function keys. 2. Press Revision. The revision information is displayed in the Revision dialog box. 3. Press OK to close the dialog box. Setting the GPIB Address 1. Press the More > I/O function keys. 2. Press GPIB. The GPIB Configuration dialog box is displayed. 3. Set the GPIB address. 4. To apply the settings, press Apply.
Front Panel Operations Controlling the Source Output Agilent B2900 User’s Guide, Edition 2 5- 9
Front Panel Operations Controlling the Source Output The field pointer moves to the Source mode setup field. 2. To set the source mode to voltage source mode, press the VOLTS (V) assist key. To set it to current source mode, press the AMPS (I) assist key. Applying the DC Voltage/Current 1. For the Single view, press the Source assist key. For the Dual view, press the Ch1 Source or Ch2 Source assist key. The field pointer moves to the Source value setup field. 2.
Front Panel Operations Controlling the Source Output 1. Press the View key to display the Single view. If the Range parameters are not displayed, press the Hide XXXX assist key. 2. Move the field pointer to the Source Volts: Spot (voltage source range) or Source Amps: Spot (current source range) field. 3. Press the rotary knob to change the pointer status to EDIT. 4. To set the range operation mode to the auto range operation, press the AUTO assist key.
Front Panel Operations Controlling the Source Output Press the On/Off switch to start outputting the Source value. The Source value is used as the pulse base value. Press the Trigger key to perform the specified pulse output and measurement. Setting the Sweep Output For details on this function, see “Sweep Output” on page 6-9. The following procedure sets the staircase sweep output. Before performing the pulsed sweep output, it is necessary to set the staircase sweep output and pulse output.
Front Panel Operations Controlling the Source Output Setting the List Sweep Output For details on this function, see “List Sweep” on page 6-10. 1. Press the View key to display the Single view. 2. Press the Show Sweep assist key to display the Sweep parameters. 3. Move the field pointer to the Sweep Parameters field. 4. Press the rotary knob to change the pointer status to EDIT. 5. Press the LIST assist key. The pointer status is changed to MOVE. 6.
Front Panel Operations Controlling the Source Output 2. Press the Show Trigger assist key to display the Trigger parameters. For details on the parameters, see “Trigger parameters” on page 4-15. 3. Move the field pointer to the Trigger field. 4. Press the rotary knob to change the pointer status to EDIT. 5. Press the AUTO, SYNC, TIMER, or MANUAL assist key to set the trigger type. The pointer status is changed to MOVE. 6.
Front Panel Operations Controlling the Source Output The Output Filter dialog box is displayed. 2. Set each parameter. For details on the parameters, see “Output Filter dialog box” on page 4-26. 3. To apply the settings, press Apply. To apply the settings and close the dialog box, press OK. To cancel the setting change, press the Cancel/Local key. Setting the Connection Type For details on this function, see “2-Wire Connections or 4-Wire Connections” on page 3-11. 1.
Front Panel Operations Controlling the Source Output Enabling or Disabling the High Capacitance Mode For details on this function, see “High Capacitance Mode” on page 6-15. 1. Press the Config > Source > Connection function keys. The Output Connection dialog box is displayed. 2. In the Ch field, set the channel to which the setting change is applied. 3. Set ON (enable) or OFF (disable) in the High Capacitance Mode field. 4. To apply the settings, press Apply.
Front Panel Operations Controlling the Source Output To apply the settings and close the dialog box, press OK. To cancel the setting change, press the Cancel/Local key. Enabling or Disabling the Automatic Output-On Function For details on this function, see “Automatic Output-ON/OFF Function” on page 6-14. 1. Press the Config > Source > Connection function keys. The Output Connection dialog box is displayed. 2. In the Ch field, set the channel to which the setting change is applied. 3.
Front Panel Operations Controlling the Source Output The Sweep dialog box is displayed. 2. In the Ch field, set the channel to which the setting change is applied. 3. Set BEST, AUTO, or FIXED in the Sweep Ranging field. For details, see “Sweep dialog box” on page 4-27. 4. To apply the settings, press Apply. To apply the settings and close the dialog box, press OK. To cancel the setting change, press the Cancel/Local key. Setting the Sweep Direction 1. Press the Config > Source > Sweep function keys.
Front Panel Operations Controlling the Measurement Function Controlling the Measurement Function This section describes how to control the measurement function of Agilent B2900.
Front Panel Operations Controlling the Measurement Function Setting the Measurement Mode 1. For the Single view, press the Measure assist key. For the Dual view, press the Ch1 Measure or Ch2 Measure assist key. 2. To set the measurement mode to the current measurement, press the AMPS (I) assist key. To set it to the voltage measurement, press the VOLTS (V) assist key. To set it to the resistance measurement, press the OHMS (R) assist key. To set it to the power measurement, press the WATTS (P) assist key.
Front Panel Operations Controlling the Measurement Function 3. Press the AUTO, SHORT, MEDIUM, NORMAL, LONG, or MANUAL assist key to set the measurement speed. For details, see “Speed” on page 4-10. 4. When MANUAL is specified, the aperture time setup field and PLC setup field are displayed. Enter and fix a value in either of the fields to set the measurement speed. Setting the Measurement Range For details on this function, see “Ranging Mode” on page 6-4 and “Range parameters” on page 4-11. 1.
Front Panel Operations Controlling the Measurement Function 4. Set the measurement mode. For details, see “Setting the Measurement Mode” on page 5-20. 5. Set the sweep source. For details, see “Setting the Sweep Output” on page 5-12. 6. Press the View key to display the Graph view. 7. Press the On/Off switch for channel 1 or 2 (Ch1 or Ch2). The output of the Source value starts. While the switch is turned green, the output continues and changes in setting values are immediately reflected in the output. 8.
Front Panel Operations Controlling the Measurement Function Setting the Measurement Wait Time For details on this function, see “Measurement Time” on page 6-5. 1. Press the Config > Common > Wait function keys. The Wait Control dialog box is displayed. 2. Set each parameter in the Measure column. For details on the parameters, see “Wait Control dialog box” on page 4-29. 3. To apply the settings, press Apply. To apply the settings and close the dialog box, press OK.
Front Panel Operations Controlling the Measurement Function Enabling or Disabling the Resistance Compensation 1. Press the Config > Measure > R Compen function keys. 2. Specify the channel to which the setting change is applied. ALL: Channels 1 and 2 (Ch 1 and Ch 2) Ch 1: Channel 1 (Ch 1) only Ch 2: Channel 2 (Ch 2) only 3. To enable the resistance compensation, press ON. To disable it, press OFF. To cancel the setting change, press the Cancel/Local key.
Front Panel Operations Using the Math Function Using the Math Function This section describes how to use the math function. For details on this function, see “Math Expression” on page 6-17. Also, for details on the setup parameters, see “Math Expression dialog box” on page 4-30. 1. Press the Function > Math function keys. The Math Expression dialog box is displayed. 2. In the Ch field, set the channel to which the setting change is applied. 3.
Front Panel Operations Performing the Limit Test Performing the Limit Test This section describes how to set the limit test and how to display the result of the limit test. For details on this function, see “Limit Test” on page 6-20. To perform the limit test, set the composite limit test, individual limit tests, and source output and measurement conditions, and then press the Trigger key.
Front Panel Operations Performing the Limit Test 11. In the /BUSY field, set the DIO pin number used for outputting the BUSY signal. 12. In the /SOT field, set the DIO pin number used for outputting the start-of-test (SOT) signal. 13. In the /EOT field, set the DIO pin number used for outputting the end-of-test (EOT) signal. 14. To apply the settings, press Apply. To apply the settings and close the dialog box, press OK. To cancel the setting change, press the Cancel/Local key.
Front Panel Operations Performing the Limit Test 8. When the test mode is COMPLIANCE, configure the following settings: • In the Fail on field, set IN or OUT for the fail judgement method. IN: Failure if the channel goes into the compliance state. OUT: Failure if the channel comes out of the compliance state. • In the Fail Pattern field, set a bit pattern that represents the limit test fail state (Fail). 9.
Front Panel Operations Performing the Limit Test Displaying the Limit Test Result For details on the setup parameters, see “Limit Test Result dialog box” on page 4-39. 1. Press the Result > Limit Test function keys. The Limit Test Result dialog box is displayed. 2. In the Ch field, set the channel for the data to be displayed. The limit test result is displayed in the area below the Length field. 3. Press OK to close the dialog box. The Length field displays the number of data.
Front Panel Operations Using the Trace Buffer Using the Trace Buffer This section describes how to set the trace buffer and how to display the statistical data. For details on this function, see “Trace Buffer” on page 6-23. To use the trace buffer, set the trace buffer and source output and measurement conditions, and then press the Trigger key.
Front Panel Operations Using the Trace Buffer Displaying the Statistical Data For details on the setup parameters, see “Trace Statistical Result dialog box” on page 4-40. 1. Press the Result > Trace function keys. The Trace Statistical Result dialog box is displayed. 2. In the Ch field, set the channel for the data to be displayed. 3.
Front Panel Operations Using Program Memory Using Program Memory This section describes how to select and run a memory program. For details on this function, see “Program Memory” on page 6-25. See also “Program key group” on page 4-42. • “Selecting a Program” • “Controlling the Program Operation” Selecting a Program 1. Press the More > Program > Catalog function keys. The Program Catalog dialog box is displayed. 2. Highlight the name of the memory program to be run. 3. Press OK.
6 Function Details
Function Details This chapter describes the following functions of the Agilent B2900.
Function Details Limit/Compliance Limit/Compliance Limit/Compliance is the output limiter for preventing damage to the test device from overcurrent or overvoltage. Voltage compliance is for current output channels, and current compliance is for voltage output channels. When a channel reaches compliance, the channel acts as a constant voltage source or a constant current source. The channel keeps the output value once compliance has been reached.
Function Details Ranging Mode Ranging Mode The following ranging modes are available for performing source output or measurement. • FIXED (fixed range) The channel uses the specified range only. • AUTO (auto range) The channel automatically uses the range which provides the best resolution for the source output value or the measurement value. It is possible to specify the minimum range effective for the auto range operation.
Function Details Measurement Time Measurement Time Measurement time depends on aperture time, measurement range, and other measurement conditions, and can be expressed by the following formula: Measurement time = Aperture time + Overhead time Aperture time is the time required for measurement, and does not include such factors as range change or data compensation, which would be the overhead time. Aperture Time Aperture time is the time required to acquire the measurement data.
Function Details Measurement Time 2. Measure delay The measurement delay time is defined as the time from trigger to start of a measurement. 3. Source wait The source wait time is defined as the time the source channel cannot change the output value after starting an output. 4. Measure wait The measurement wait time is defined as the time the measurement channel cannot start measurement after starting an output. 5. Period The period is the trigger interval.
Function Details Pulse Output Pulse Output The source/measure unit SMU can apply the pulsed voltage or current. Figure 6-2 shows a pulsed sweep output example. For a pulsed bias output, focus the shape of a pulse only. To Control Pulse Output/Measure Timing The pulse output and measurement timing can be controlled by the following parameters. See Figure 6-2. 1. Source delay The source delay time is defined as the time from trigger to start of a source output. 2.
Function Details Pulse Output Figure 6-2 Pulse Output and Measurement Timing, Sweep Output Example Voltage or current Stop value Trigger Source delay (1) Trigger (1) Trigger (1) Measure delay (2) Pulse delay (3) (2) (2) (3) (3) Source wait (4) (4) (4) Measure wait (5) (5) (5) Start value Previous value Pulse width (6) (6) (6) : Measurement Time To set the delay time, see “Trigger parameters” on page 4-15.
Function Details Sweep Output Sweep Output The source/measure unit SMU can apply a sweep voltage or current. It supports several shapes of sweep output, as shown in Figure 6-3. The SMU not only performs the sweep output but performs the measurement for each sweep step as shown in Figures 6-1 and 6-2.
Function Details List Sweep List Sweep The list sweep function is effective for performing an arbitrary waveform output. The source/measure unit (SMU) can apply the waveform as shown in Figure 6-4, and measure voltage or current at each output value. The source output and the measurement can be performed in the following minimum interval. • B2901A/B2902A: 20 s • B2911A/B2912A: 10 s The source output and measurement timing is controlled by the trigger system.
Function Details Output Filter Output Filter The filter is mounted on the source/measure unit (SMU). It assures clean source output with no spikes or overshooting. However, using a filter may increase the SMU settling time. To set the filter, see “Output Filter dialog box” on page 4-26.
Function Details Over Voltage/Current Protection Over Voltage/Current Protection The over voltage/current protection is effective for preventing damage to the test device from overcurrent or overvoltage. If this function is enabled, the source/measure unit (SMU) sets the output to 0 V and sets the output switch to off automatically and immediately when it reaches the compliance status. To set the over voltage/current protection, see “Output Connection dialog box” on page 4-25.
Function Details Output-Off Status Output-Off Status The output-off status is the condition which is set on the source/measure unit (SMU) automatically, immediately after its output is turned off. The status must be specified before enabling the source output. The available conditions are shown in Table 6-1 To set the output-off status, see “Output Connection dialog box” on page 4-25.
Function Details Automatic Output-ON/OFF Function Automatic Output-ON/OFF Function The automatic output-ON/OFF function defines the source channel’s output ON/OFF operation when the trigger system changes the status. • Automatic-ON function If this function is enabled, the source/measure unit (SMU) automatically turns the channel output ON just before the trigger system is initiated by an SCPI command, not by a front panel operation.
Function Details High Capacitance Mode High Capacitance Mode High capacitance mode is effective for the measurement of a capacitive load greater than 0.01 F. If the measurement result data is not stable, set this function ON. The measurement data may come stable. This function is effective for measurements of capacitive devices up to 50 F. High capacitance mode is available for the following source/measure condition.
Function Details Resistance Measurement Resistance Measurement B2900 supports resistance measurement. If the measurement parameter is set to resistance OHMS (R), the source/measure unit (SMU) automatically sets the current source and voltage measurement operation to perform resistance measurement. For performing accurate measurement, B2900 provides the compensation function. NOTE To Enable Resistance Measurement The resistance measurement operation must be specified.
Function Details Math Expression Math Expression B2900 provides a math function for performing calculations using the measurement result data. The calculation result can be displayed and used for the limit test and trace statistics. For the predefined math expressions, see “Predefined Math Expressions”. To define a math expression, see the Agilent B2900 SCPI Command Reference. Math expressions can be defined by using the :CALC:MATH commands.
Function Details Math Expression This function is effective for reducing measurement errors in low resistance measurements. VARALPHA Calculates varistor alpha using the following formula. VARALPHA = log(CURR[c][1] / CURR[c][0]) / log(VOLT[c][1] / VOLT[c][0]) where, CURR[c][0] and VOLT[c][0] are the measurement data at a point on a varistor’s non-linear I-V characteristics curve, and CURR[c][1] and VOLT[c][1] are the data at the another point.
Function Details Math Expression Table 6-2 Reserved Variables Reserved variable a Scalar Description Vector SOUR[c] SOUR[c][] Source output setting data VOLT[c] VOLT[c][] Voltage measurement data CURR[c] CURR[c][] Current measurement data RES[c] RES[c][] Resistance measurement data TIME[c] TIME[c][] Time (timestamp) data a. The numeric suffix [c] is effective for specifying the channel. For example, use CURR2 to read the current spot measurement data of the channel 2.
Function Details Limit Test Limit Test Limit test is a pass/fail judgement performed for a measurement data or math result data obtained by a channel. It can be performed if both limit test and composite limit test are set to ON. Maximum of twelve limit tests can be defined and used for the bins of composite limit test. B2900 supports the following two operation modes of composite limit test. • Grading mode Performs limit test for up to 12 test limits (bins) until a failure is detected.
Function Details Limit Test Figure 6-5 Composite Limit Test Flowchart Example for Grading Mode START Wait for SOT Source and Sense Perform Limit X ? No Yes No Pass ? No Display “FAIL” Yes Last Limit ? Immediate ? Yes No Yes Yes Pass ? Display“PASS” No No Yes Immediate ? Yes Output Fail Pattern Save Fail Pattern Output Pass Pattern No Yes First Failure ? Another Data ? No Failures ? Immediate ? No No Yes Output Saved Fail Pattern Yes Yes Output Pass Pattern Another Device
Function Details Limit Test Figure 6-6 Composite Limit Test Flowchart Example for Sorting Mode START Wait for SOT Source and Sense Perform Limit X ? No Yes Pass ? Yes No No Last Limit ? Yes Yes Display “FAIL” Display “PASS” Output Fail Pattern Output Pass Pattern Another Device ? SORTING MODE END 6- 22 Agilent B2900 User’s Guide, Edition 2
Function Details Trace Buffer Trace Buffer The trace buffer collects the test result data until a buffer full is detected. The maximum data size is 100,000 bp.48 .9554 fr each chan.9554 The data f ii sh.9554n in.9554 Figure 6.9554(-).1(7)]TJETEMC/Span <>BDCBT9.96 0 0 9.96 239.76 559.2 Tm.0013 Tc-. data,ent measurement data,istan.]TJ16.1084 0 TD.0031 Tc-.0001 Tw[(ce )12(meas)-5.3(u)9.1(r)-1.2(em by using the Frmat keys of the I/O key group. See “I/O key group” on page 4-43.
Function Details Trace Buffer NOTE Do not forget to save or read the data before turning the B2900 off. The trace buffer is cleared by turning the instrument off.
Function Details Program Memory Program Memory The program memory stores command strings temporarily. The stored program can be executed by using the front panel keys, or automatically when B2900 is turned on. See “Program key group” on page 4-42 and “Start-up” on page 4-50. The keys used for controlling the program memory are shown in Table 6-4. This table also shows the status changed by pressing the program control keys.
Function Details Channel Grouping Channel Grouping This section applies only to 2-channel models. This function is used to control the channel output timing automatically so that the channel keeps the output while the other channel performs measurement. The grouped channels start the source output in the order of channel number, then start the measurement at the same time, and keep the output until the measurement is completed. If delay time and wait time are set, this is adjusted by these values.
Function Details Trigger System Trigger System B2900 supports the ARM-TRIGger model described in 1999 SCPI Command Reference. The ARM-TRIGger model shows independent event detection for the ARM and TRIGger layers. This layered model is similar to the for-loop statement of programming languages. When the trigger system is initiated, the ARM layer waits for the specified ARM source signal. After the ARM condition is satisfied, the control is passed to the TRIGger layer.
Function Details Trigger System Figure 6-8 B2900 Trigger System Trigger key Auto key Idle No Initiated ? Yes Trigger output ARM Layer Trigger output before ARM after ARM ARM count = 0 Yes ARM events No Event detector Last count? 1 to 100000 ARM count + 1 ARM delay TRIGger Layer Trigger output Trigger output before TRIGger after TRIGger TRIGger count = 0 Yes TRIGger events No Event detector Last count? 1 to 100000 TRIGger count + 1 TRIGger delay Trigger output Trigger output befo
Function Details Trigger System Device Actions B2900 supports the following device actions. • Triggered transient (source) action After the transient trigger condition is satisfied, the channel applies a new voltage or current value after the source delay time (Source delay) elapses. • Triggered acquire (measurement) action After the acquire trigger condition is satisfied, the channel performs current and/or voltage measurement after the measurement delay time (Measure delay) elapses.
Function Details Trigger System Trigger Output B2900 provides the trigger output function by using the Digital I/O connector on the rear panel. For more information about the connector, see “Using Digital I/O” on page 3-29. • Trigger output terminal Specifies Digital I/O pins. Pin assignment can be specified by the “DIO Configuration dialog box” on page 4-46. • Trigger output timing The output trigger can be generated at the timing shown in Table 6-5.
Function Details Trigger System Synchronous Device Actions This section applies only to when performing synchronous channel operation on a 2-channel model. If channels are set as shown below, the device actions start simultaneously. • • To synchronize transient actions (source output) • Trigger source is set to the same mode. • Delay time is set to the same value. • Source output ranging mode is set to the fixed mode. • Source wait time control is set to OFF.
Function Details Interlock Function Interlock Function The interlock function is designed to prevent electrical shock when a user touches the measurement terminals. If the interlock terminal is open, maximum output is limited to 42 V. To perform high voltage measurement greater than 42 V, connect the interlock terminal to an interlock circuit of a test fixture or a shielding box.
Function Details Over Temperature Protection Over Temperature Protection The over temperature protection is effective for preventing damage to a channel Agilent B2900 User’s Guide, Edition 2 6- 33
Function Details Initial Settings Initial Settings The B2900 is initialized by turning the B2900 on, the *RST command, or the device clear. Initial settings of the B2900 are shown in this section.
Function Details Initial Settings Setup item Table 6-7 Power on Reset Mass storage directory (Root) Program variables None Not changed Program selection None Program status Idle SMU Initial Settings Setup item Power on Reset Low terminal state Grounded Output state OFF Output auto filter enable ON Output filter enable ON Output filter time constant 5 s Output filter frequency 31.
Function Details Initial Settings Setup item Power on Reset Voltage source mode Fixed Voltage sweep points 1 Voltage sweep start 0V Voltage sweep stop 0V Not changed Voltage list points 1 Voltage list values 0V Current source 100 A Current protection level 100 A Current source auto ranging ON Current source range 100 A Current source range lower limit 10 nA for B291x 100 nA for B290x Current source mode Fixed Current sweep points 1 Curren
Function Details Initial Settings Setup item Power on Reset Auto settling time ON Settling time 0s Measure function Current Auto aperture ON Aperture time 0.1 PLC Voltage measure range mode AUTO Voltage measure range limit 0.2 V Voltage measure range 2V Current measure mode AUTO Current measure range limit 1 A Current measure range 100 A Resistance measure mode OFF Res. meas. range 2 Res. meas. range limit (Low) 2 Res. meas.
Function Details Initial Settings Table 6-8 Trigger System Initial Settings Setup item Power on Reset ARM count 1 ARM source AINT ARM timer 100 s ARM delay time 0s ARM bypass OFF Trigger count 1 Trigger source AINT Trigger timer 10 s for B291x 20 s for B290x Trigger delay time 0s Trigger bypass OFF External trigger output EXT1 External trigger output (LAN) LAN0-7 (all) External trigger output enable OFF 6- 38 Agilent B2900 User’s Guide
Function Details Initial Settings Table 6-9 LXI Trigger Events Initial Settings Setup item Power on Reset Event domain 0 LAN event “WaitingForAcquir eArm1”, “WaitingF orTransitionArm1” , “WaitingForAcqu ireTrigger1”, “Wait ingForTransitionTr igger1”, “Measurin g1”, “Settling1” “WaitingForAcquir eArm2”, “WaitingF orTransitionArm2” , “WaitingForAcqu ireTrigger2”, “Wait ingForTransitionTr igger2”, “Measurin g2”, “Settling2” Delay time 0 Input/output filter string “ALL:5044” Input/output
Function Details Initial Settings Table 6-10 Calculate Functions Initial Settings Setup item Power on Reset Composite limit test result transfer timing IMM Composite limit test result automatic clearance ON Composite limit test fail bit pattern All 0 Composite limit test pass bit pattern All 0 Composite limit test mode GRADing GPIO bit assignment (pass/fail bit pattern) None GPIO bit assignment (/BUSY) None GPIO bit assignment (/EOT) None GPIO bit assignment (/SOT
Function Details Initial Settings Math function expression name “POWER” Math function catalog “POWER”, “OFFCOMPOHM ”, “VOLTCOEF”, “VARALPHA” Math function unit name “W” Agilent B2900 User’s Guide, Edition 2 6- 41
Function Details Initial Settings Table 6-11 Non-volatile Communication Settings Setup item Factory default setting DHCP Enabled IP address 169.254.5.2 Subnet mask 255.255.0.0 Default gateway 0.0.0.0 Obtain DNS server from DHCP Enabled DNS server 0.0.0.0 WINS server 0.0.0.0 Hostname A-B29xxA-nnnnn Desired hostname B29xxA: model number Desired service name nnnnn: suffix of serial number.
Function Details Initial Settings Setup item Table 6-12 Factory default setting Web interface Enabled Command prompt for a Telnet session B2900A> Welcome message for a Telnet session Welcome to Agilent B2900A Series Other Non-volatile Settings Setup item Channel grouping Factory default setting “1” for 1-ch models “1-2” for 2-ch models Remote display Enabled Display color set 1 Beeper Enabled Graphical web interface (web server) Enabled SCPI language mode Default Power-on program Not
Function Details Initial Settings 6- 44 Agilent B2900 User’s Guide, Edition 2
