Agilent Technologies System DC Power Supply Series N8700 User’s Guide
Legal Notices © Agilent Technologies, Inc. 2009 No part of this document may be photocopied, reproduced, or translated to another language without the prior agreement and written consent of Agilent Technologies, Inc. as governed by United States and international copyright laws. Warranty The material contained in this document is provided “as is,” and is subject to being changed, without notice, in future editions.
Safety Notices The following general safety precautions must be observed during all phases of operation of this instrument. Failure to comply with these precautions or with specific warnings or instructions elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Agilent Technologies assumes no liability for the customer's failure to comply with these requirements. General Do not use this product in any manner not specified by the manufacturer.
In this Book This User’s Manual contains the operating instructions, installation instructions, and specifications of the Agilent Technologies Series N8700 3.3kW and 5kW System DC Power Supplies. Specific chapters in this manual contain the following information: NOTE Quick Reference – Chapter 1 is a quick reference section that helps you quickly become familiar with your Agilent N8700 power supply. Installation – Chapter 2 describes how to install your power supply.
Contents 1 - Quick Reference The Agilent N8700 DC Power Supplies – At a Glance ................................. 8 The Front Panel - At a Glance......................................................................... 10 The Rear Panel – At a Glance ......................................................................... 12 2 - Installation General Information .......................................................................................... 16 Inspecting the Unit ..................................
- Programming Examples Output Programming Example ........................................................................ 86 Trigger Programming Example........................................................................ 88 Appendix A - Specifications Performance Specifications ............................................................................ 92 Supplemental Characteristics ......................................................................... 93 Outline Diagram.........................
1 Quick Reference The Agilent N8700 DC Power Supplies – At a Glance ................................. 8 The Front Panel - At a Glance......................................................................... 10 The Rear Panel – At a Glance ......................................................................... 12 This chapter concisely describes the Agilent Technologies Series N8700 Power Supplies. This chapter is not meant to describe every operating feature in detail.
1 Quick Reference The Agilent N8700 DC Power Supplies – At a Glance The Agilent Technologies Series N8700 System DC Power Supplies are general-purpose, 2U (two rack units) high, switching power supplies that are available with a wide variety of output voltage and current ratings. There are both 3.3 kW and 5 kW models. These power supplies are power-factor corrected and have flexible AC input voltage options.
Quick Reference 1 Programmable Functions Output voltage and current setting. Output voltage and current measurement. Output voltage and current trigger setting. Output On/Off control. Over-current protection setting. Over-voltage protection setting and readback. Under-voltage limit setting and readback. Start-up mode (either last setting or reset mode) Status register setting and readback. Bus trigger Calibration Model Ratings 3.
1 Quick Reference The Front Panel - At a Glance 1 2 VOLTAGE 3 4 DC VOLTS DC AMPS CV 1 – VOLTAGE knob 18 17 16 CURRENT CC PROT 19 6 5 15 FINE 14 LIMIT/ OVP UVL 13 OCP/488 12 LAN 11 OUT ON 10 9 8 7 Voltage function: Adjusts the output voltage, the over-voltage protection level, and the under-voltage limit. If over-voltage protection or under-voltage limits have been set, you cannot program the output voltage outside those limits.
Quick Reference 1 9 – LAN indicator Indicates the LAN has been configured and is operating normally. Set another unit on the N8700 unit’s Web home page and the LAN indicator blinks to identify that unit. 10 – LAN button View address: Press the LAN button to view the IP and Ethernet address. The display first scrolls through the four segments of the IP address, followed by the six segments of the Ethernet (EA) address. Press any key to turn the address display off.
1 Quick Reference The Rear Panel – At a Glance 6 7 8 9 150V – 600V (wire clamp) 2-phase VAC (three-conductor) 5 3 4 2 3-phase VAC (four-conductor) 1 1 – AC input connector Header with mating plug-in connector for both the 3.3 kW and 5 kW output models. A 3-conductor plug is provided for single-phase VAC. A 4-conductor plug is provided for 3-phase VAC. 2 – DC output connector Wire clamp connector is used for 150V, 300V and 600V models. Bus bars are used for 8V to 100V models.
Quick Reference 1 J2 Sense Connector 1 – Remote sense (+) 2 – Local sense (+) 3 – Not used 4 – Local sense (–) 5 – Remote sense (–) The factory-shipped configuration is shown in the figure. SW1 Setup Switch 1 2 3 4 5 6 7 8 9 The factory-shipped setting is Down for all switches. 1 – Output voltage, voltage programming Down: The output voltage is programmed by the front panel. Up: The output voltage is programmed by the external voltage signal.
1 Quick Reference J1 Analog Programming Connector Current Program Voltage Program Local / Analog Voltage Monitor Common (-S) CV / CC 13 25 12 24 11 23 10 22 9 8 21 20 6 7 19 18 5 17 Chassis Common Chassis Common Enable IN 4 16 1 2 3 15 14 Parallel Current Monitor Current Prog. Return Voltage Prog. Return Local / Analog State Enable OUT Shut Off Power Supply OK The factory-shipped default configuration is Local operation, which does not require connection to J1.
2 Installation General Information .......................................................................................... 16 Inspecting the Unit ........................................................................................... 16 Installing the Unit.............................................................................................. 17 Connecting the Line Cord ................................................................................ 19 Connecting the Load.......................
2 Installation General Information Models 3.3 kW Models 5 kW Models N8731A – N8739A N8754A – N8759A N8740A – N8742A N8760A – N8762A Items Supplied Item Description Power Cord A power cord appropriate for your location. Units are supplied with unterminated power cords. Strain relief assembly A strain relief assembly for unterminated power cords. AC input cover A cover for the AC input on which the strain relief assembly is mounted.
Installation 2 Installing the Unit Safety Considerations This power supply is a Safety Class I instrument, which means it has a protective earth terminal. That terminal must be connected to earth ground through power source equipped with a ground receptacle. Refer to the Safety Summary page at the beginning of this guide for general safety information. Before installation or operation, check the power supply and review this guide for safety warnings and instructions.
2 Installation Rack Installation CAUTION Ensure that the screws used to attach the rack slide kit do not penetrate more than 6 mm into the sides of the unit. Do not block the air intake at the front, or the exhaust at the rear of the unit. The Agilent N8700 power supplies can be mounted in a standard 19inch rack panel or cabinet. They are designed to fit in two rack units (2U) of space. To install the power supply in a rack: 1.
Installation 2 Connecting the Line Cord WARNING SHOCK HAZARD The power cable provides a chassis ground through the ground conductor. Be certain that the power cable has the ground conductor connected to earth ground at the source and instrument AC input connector. FIRE HAZARD Use only the power cable that was supplied with your instrument. Using other types of power cables may cause overheating of the power cable and result in fire.
2 Installation WARNING CONNECTION TO AC MAINS Applying incorrect AC mains voltage or incorrectly wiring to the AC mains will damage the power supply and void the warranty. Single-phase mains connections for 3.3 kW units L1 L2 phase phase Earth (safety ground) 208 V Option 230 units wired for nominal AC input 190 – 240 VAC L3 L1 Disconnect device Single-phase power supply attached to 208 V, phaseto-phase distribution.
Installation 2 Input Connections for 3.3 kW and 5 kW units The AC input connector is located on the rear panel. It is a 3-terminal wire clamp for 3.3 kW single-phase units, or a 4-terminal wire clamp for 3.3 kW and 5 kW 3-phase units. Input voltage and current ratings are as follows: Unit Nominal AC Input Input Current @ 100% load Frequency 3.3 kW single-phase 190 – 240 VAC 23 – 24 A max. 50/60 Hz 3.3 kW 3-phase 190 – 240 VAC 13.6 – 14.5 A max. 50/60 Hz 380 – 415 VAC 6.8 – 7.2 A max.
2 Installation 4 Route the AC wires to the input connector terminals as required. To connect the wires, loosen the terminal screw, insert the stripped wire into the terminal, and tighten the screws securely as indicated in the following figures. Ensure that you have the green/yellow ground conductor connected to the ground terminal on the connector. Plug the connector onto the rear panel header and secure it with the side screws. Screw tightening torque: 10.7 – 13.4 in-lb (1.2 – 1.5 Nm).
Installation 2 Connecting the Load WARNING SHOCK HAZARD Turn off AC power before making rear panel connections. Wires and straps must be properly connected and screws securely tightened.
2 Installation Along with conductor temperature, you must also consider voltage drop when selecting wire sizes. Although the power supply will compensate for up to 5 volts in each load wire, it is recommended to minimize the voltage drop to less than 1 volt to prevent excessive output power consumption from the power supply and poor dynamic response to load changes.
Installation 2 appropriate cut-outs for the larger sized wires as indicated in the following figure. Secure the shield using the tab on the left side and the M3 x 8mm flat head screw on the right side. Screw tightening torque: 4.8 - 5.3 in-lb (0.54 – 0.6 Nm). Remove this cut-out for bus rail installation. Opening for wire sizes from AWG 2-1/0. (cut-out has been removed) Remove this cut-out for wire sizes AWG 2/0- 3/0. Opening for wire sizes from AWG 4-10.
2 Installation Connect load wires to the power supply output wire clamp connector as follows: 1 Strip wires back approximately 10 mm (0.4 in). 2 Loosen the connector terminal screws and insert the stripped wires into the terminal. Tighten the terminal screws securely. Positive (+) output Negative (-) output Load wires 3 Loosen the chassis screw marked A and remove (save). A 4 Slide the slotted tab on the protective shield’s left side into the chassis slot and lock into place.
Installation 2 Output Voltage Sensing WARNING SHOCK HAZARD There is a potential shock hazard at the sense connector when using a power supply with a rated output greater than 40V. Ensure that the local sense and remote sense wiring insulation rating is greater than or equal to the maximum output voltage of the power supply. Ensure that the connections at the load end are shielded to prevent accidental contact with hazardous voltages. Local and remote sense connections are made at the J2 connector.
2 Installation If the power supply is operated without the local sense jumpers or without the remote sense lines connected, it will continue to work, but the output voltage regulation will be degraded. Also, the OVP circuit may activate and shut down the power supply. Note that the internal wiring between +V and + local sense and between –V and – local sense will fail if load current flows through it. NOTE Remote Sensing Use remote sensing in applications where load regulation at the load is critical.
Installation 2 If the power supply is operated with remote sensing and either the positive or negative load wire is not connected, an internal protection circuit will activate and shut down the power supply. To resume operation, turn the power supply off, connect the open load wire, and turn on the power supply. NOTE Load Considerations Multiple Loads The following figure shows multiple loads connected to one power supply.
2 Installation Output Noise and Impedance Effects To minimize the noise pickup or radiation, the load wires and remote sense wires should be twisted-pairs to the shortest possible length. Shielding of sense leads may be necessary in high noise environments. Where shielding is used, connect the shield to the chassis via a rear panel ground screw. Even if noise is not a concern, the load and remote sense wires should be twisted-pairs to reduce coupling, which might impact the stability of power supply.
Installation 2 Grounding the Output The output of the power supply is isolated from earth ground. Either positive or negative voltages can be obtained from the output by grounding (or "commoning") one of the output terminals. Always use two wires to connect the load to the output regardless of where or how the system is grounded.
2 Installation +S -S Twisted pair -S +S +V As short as possible MASTER POWER SUPPLY -V J1-25 J1-8 J1-12 +S J1-12 Parallel Common Curr Prog Curr Prog Rtn J1-10 Twisted pair LOAD J1-23 +V SLAVE -S POWER SUPPLY -V -S -LS +LS +S Remote Sensing One of the units operates as a master and the remaining units are slaves. The slave units operate as controlled current sources following the master output current.
Installation 2 Setting the Over-Voltage Protection The master unit OVP should be programmed to the desired OVP level. The OVP of the slave units should be programmed to a HIGHER value than the master. When the master unit shuts down, it programs the slave unit to zero output voltage. If a slave unit shuts down when its OVP is set lower than the master output voltage, only that unit shuts down and the remaining slave units will supply the entire load current.
2 Installation +LS +S +LS +S POWER SUPPLY -LS + - POWER SUPPLY (*) -LS -S + - (*) -S + + LOAD LOAD - +LS +S POWER SUPPLY -LS + - POWER SUPPLY (*) Diodes are user supplied. (*) - +LS +S -LS -S + - (*) -S Remote Sensing Local Sensing As shown in the following figure, two units of the same voltage and current rating can be connected in a split-connection series configuration to provide positive and negative output voltages.
Installation 2 J1 Connector Connections SHOCK HAZARD There is a potential shock hazard at the J1 connector when using a power supply with a rated output greater than 40V. Ensure that the load wiring insulation rating is greater than or equal to the maximum output voltage of the power supply. WARNING External programming and monitoring signal are located on the J1 connector. The power supply is shipped with a mating plug that makes it easy for you to make your wire connections.
3 Operating the Power Supply Locally Turn-On Check-Out ........................................................................................... 38 Normal Operation .............................................................................................. 40 Protection Functions ........................................................................................ 41 Output On/Off Controls....................................................................................
3 Operating the Power Supply Locally Turn-On Check-Out Before Turn-On Ensure that the power supply is configured as follows: WARNING The unit is connected to an appropriate AC source as described in chapter 2. The POWER switch is in the off position. Sense connector pins 1 and 2 are jumpered; sense connector pins 4 and 5 are jumpered. All switches on Connector J2 are in the down position. SHOCK HAZARD Be aware that hazardous voltages can be present on the output terminals.
Operating the Power Supply Locally 3 UVL Check 1 Press the OVP/UVL button twice so that the DC AMPS display indicates UUL. The DC VOLTS display shows the UVL level. 2 Use the voltage knob and set the UVL level of the unit to 50% of its full-scale voltage rating or 30 volts, whichever is lower. 3 Wait a few seconds until the DC VOLTS display returns to show the output voltage. 4 Use the voltage knob and lower the output voltage of the unit until it approaches the UVL setting.
3 Operating the Power Supply Locally Normal Operation The power supply has two basic operating modes: constant voltage and constant current mode. In constant voltage mode, the power supply regulates the output voltage at the selected value, while the load current varies as required by the load. In constant current mode, the power supply regulates the output current at the selected value, while the voltage varies as required by the load.
Operating the Power Supply Locally 3 CV/CC Mode Crossover If the power supply is in constant voltage mode and the load current increases above the current limit setting, the power supply switches to constant current mode. If the load decreases below the current limit setting, the power supply switches to constant voltage mode. CV/CC Signal CAUTION Do not connect the CV/CC signal to a voltage source higher than 30 VDC.
3 Operating the Power Supply Locally 1 Press the OUT ON button to turn the output on. 2 Turn the AC power off, wait a few seconds, and turn it on. 3 Turn the output off, then on again using the Shut Off pin on the J1 connector. This only applies in Auto-Restart mode. 4 If the OVP continues to trip, try lowering the output voltage below the OVP setting, or raising the OVP setting.
Operating the Power Supply Locally 3 Over-Temperature Protection The over-temperature protection circuit shuts down the power supply before the internal components can exceed their safe internal operating temperature. This can occur if there is a cooling fan failure. When an OTP condition occurs, the output is disabled, the display shows O7P, the PROT indicator blinks, and the OT status bit is set in the Questionable Condition status register.
3 Operating the Power Supply Locally Output On/Off Controls The Output On/Off controls turn the power supply output on or off. This can be done with the front panel OUT ON button or from the rear panel J1 connector. With the output off, adjustments can be made to the power supply or the load without shutting off AC power. OUT ON button The OUT ON button can be pressed at any time to enable or disable the power supply output.
Operating the Power Supply Locally 3 To re-enable the output after it has shut down, you must disable the Shut-Off signal. In Auto-Restart mode, operation resumes automatically. In Safe-Start mode the Shut-Off function is latched. You must also press the OUT ON button or send an OUTPut:PROTection:CLEar command to resume operation. The Shut-Off function can be used to shut down multiple power supplies in a daisy-chain fashion as explained later in this chapter.
3 Operating the Power Supply Locally Power Supply OK Signal The Power Supply OK signal on the J1 connector indicates a fault condition in the power supply. J1 pin 16 is a TTL output signal. Pins 2 and 3, which are connected internally, are the signal common. All pins are optically isolated from the power supply output. With no fault, Power Supply OK is high, with a maximum source current of 2mA. When a fault occurs, Power Supply OK is low, with a maximum sink current of 1mA.
Operating the Power Supply Locally 3 Analog Programming of Output Voltage and Current CAUTION J1 pin 12, pin 22, and pin 23 are internally connected to the negative sense terminal. Do not reference these pins to any terminal other than the negative sense terminal, as it may damage the unit. In Local mode, the output voltage and current is programmed with the front panel VOLTAGE and CURRENT knobs or over the remote interface.
3 Operating the Power Supply Locally Voltage Programming of Output Voltage and Current To maintain the isolation of the power supply and prevent ground loops, use an isolated programming source when operating the unit using analog programming. CAUTION Voltage programming sources of 0 - 5V or 0 - 10V can be used to program the output voltage and current limit from zero to full scale. Set the power supply to analog voltage programming as follows: 1 Make sure that the power supply is turned off.
Operating the Power Supply Locally 3 Resistance Programming of Output Voltage and Current Resistances of 0 - 5 kΩ or 0 - 10 kΩ can be selected to program the output voltage and current limit from zero to full scale. Internal current sources supply a 1 mA current through the external resistors. The voltage drop across the resistors is used as the programming voltage for the power supply.
3 Operating the Power Supply Locally External Monitoring of Output Voltage and Current The J1 connector also provides analog signals for monitoring the output voltage and current. Selection of the voltage range between 0 – 5V or 0 – 10V is made by SW1 setup switch 4. The monitoring signals represent 0 to 100% of the power supply output voltage and current rating. The monitor outputs have a 500Ω series output resistance.
4 Operating the Power Supply Remotely Connecting to the Interfaces .......................................................................... 52 SCPI Commands – an Introduction ................................................................ 62 This chapter contains information on how to configure the three remote interfaces that are provided on the back of the instrument.
4 Operating the Power Supply Remotely Connecting to the Interfaces The Agilent N8700 power supplies support remote interface communication using a choice of three interfaces: GPIB, USB, and LAN. All three interfaces are live at power-on. GPIB Interface NOTE For detailed information about GPIB interface connections, refer to the Agilent Technologies USB/LAN/GPIB Interfaces Connectivity Guide, located on the Automation-Ready CD-ROM that is shipped with your product.
Operating the Power Supply Remotely 4 USB Interface NOTE For detailed information about USB interface connections, refer to the Agilent Technologies USB/LAN/GPIB Interfaces Connectivity Guide, located on the Automation-Ready CD-ROM that is shipped with your product. The following steps will help you quickly get started connecting your USB-enabled instrument to the Universal Serial Bus (USB). The following figure illustrates a typical USB interface system.
4 Operating the Power Supply Remotely Connecting to a Site LAN A site LAN is a local area network in which LAN-enabled instruments and computers are connected to the network through routers, hubs, and/or switches. They are typically large, centrally-managed networks with services such as DHCP and DNS servers. 1 If you have not already done so, install the Agilent IO Libraries Suite from the Automation-Ready CD-ROM that is shipped with your product. 2 Connect the instrument to the site LAN.
Operating the Power Supply Remotely 4 Connecting to a Private LAN: A private LAN is a network in which LAN-enabled instruments and computers are directly connected, and not connected to a site LAN. They are typically small, with no centrally-managed resources. NOTE 1 If you have not already done so, install the Agilent IO Libraries Suite from the Automation-Ready CD-ROM that is shipped with your product. 2 Connect the instrument to the computer using a LAN crossover cable.
4 Operating the Power Supply Remotely 5 You can now use Interactive IO within the Connection Expert to communicate with your instrument, or you can program your instrument using the various programming environments. You can also use the Web browser on your computer to communicate with the instrument as described under “Using the Web Server”.
Operating the Power Supply Remotely 4 Using Telnet In an MS-DOS Command Prompt box type: telnet hostname 5024 where hostname is the N8700 hostname or IP address, and 5024 is the instrument’s telnet port. You should get a Telnet session box with a title indicating that you are connected to the power supply. Type the SCPI commands at the prompt. Using Sockets Agilent instruments have standardized on using port 5025 for SCPI socket services.
4 Operating the Power Supply Remotely Service requests are enabled for control sockets using the Service Request Enable register. Once service requests have been enabled, the client program listens on the control connection. When SRQ goes true the instrument will send the string “SRQ +nn” to the client. The “nn” is the status byte value, which the client can use to determine the source of the service request.
Operating the Power Supply Remotely 4 Subnet Mask This value is used to enable the instrument to determine if a client IP address is on the same local subnet. When a client IP address is on a different subnet, all packets must be sent to the Default Gateway. Default Gateway This value is the IP Address of the default gateway that allows the instrument to communicate with systems that are not on the local subnet, as determined by the subnet mask setting.
4 Operating the Power Supply Remotely Factory-shipped LAN Settings The factory-shipped LAN settings documented in the following table are optimized for connecting your power supply to a site network. They should also work well for other network configurations. The factory-shipped settings can be restored by pressing and holding the front panel LAN button for three seconds. Pressing the LAN button again while the message “LAn rES” is displayed resets the LAN settings.
Operating the Power Supply Remotely 4 4 Enable the LAN and, optionally, the built-in Web server using the applicable check boxes. 5 Click the Set button to save all the settings information. 6 Connect the LAN cable to your instrument and computer. Reboot the instrument. Wait for the instrument to configure the new LAN settings. 7 View the LAN settings by clicking the LAN Status tab. Click the Refresh button to update the display with the assigned IP Address and Subnet Mask.
4 Operating the Power Supply Remotely SCPI Commands – an Introduction SCPI (Standard Commands for Programmable Instruments) is an ASCII-based instrument command language designed for test and measurement instruments. SCPI commands are based on a hierarchical structure, also known as a tree system. In this system, associated commands are grouped together under a common node or root, thus forming subsystems. Subsystem commands perform specific power supply functions.
Operating the Power Supply Remotely 4 previous command in the message up to and including the last colon separator. An example of a message with two commands is: OUTPut:STATe ON;PROTection:CLEar which shows the use of the semicolon separating the two commands, and also illustrates the command path concept.
4 Operating the Power Supply Remotely In the previous examples, the upper-case letters indicate the abbreviated spelling for the keyword. For shorter program lines, you can send the abbreviated form. For better program readability, you can send the long form. For example, VOLT and VOLTage are both acceptable forms. You can use upper- or lower-case letters. Therefore, VOLTAGE, Volt, and volt are all acceptable. Other forms, such as VOL and VOLTAG, generate an error.
Operating the Power Supply Remotely 4 Parameter Types Data programmed or queried from the power supply is ASCII. The data may be numerical or character string. Numeric Parameters Symbol Response Formats Digits with an implied decimal point assumed at the right of the least-significant digit. Examples: 273 Digits with an explicit decimal point. Example: 27.3 Digits with an explicit decimal point and an exponent. Example: 2.
4 Operating the Power Supply Remotely SCPI Command Completion SCPI commands sent to the power supply are processed either sequentially or in parallel. Sequential commands finish execution before a subsequent command begins. Parallel commands allow other commands to begin executing while the parallel command is still executing. The following is a list of parallel commands. You should use some form of command synchronization as discussed in this section before assuming that these commands have completed.
5 Language Reference SCPI Command Summary ................................................................................ 68 Calibration Commands ..................................................................................... 70 Measure Commands......................................................................................... 71 Output Commands ............................................................................................ 72 Source Commands .......................................
5 Language Reference SCPI Command Summary NOTE Some [optional] commands have been included for clarity. All settings commands have a corresponding query.
Language Reference SCPI Command 5 Description STATus :OPERation [:EVENt]? :CONDition? :ENABle :NTRansition :PTRansition :PRESet :QUEStionable [:EVENt]? :CONDition? :ENABle :NTRansition :PTRansition Returns the value of the operation event register Returns the value of the operation condition register Enables specific bits in the Event register Sets the Negative transition filter Sets the Positive transition filter Presets all enable and transition registers to power-on Re
5 Language Reference Calibration Commands Calibration commands let you enable and disable the calibration mode, change the calibration password, calibrate current and voltage programming, and store new calibration constants in nonvolatile memory. NOTE If calibration mode has not been enabled with CALibrate:STATe, the calibration commands will generate an error. CALibrate:CURRent[:LEVel] This command initiates the calibration of the output current.
Language Reference 5 CALibrate:STATe ON|OFF [,] CALibrate:STATe? This command enables/disables calibration mode. Calibration mode must be enabled for the power supply to accept any other calibration commands. The first parameter specifies the enabled or disabled state On (1) or Off (0). The second parameter is the password. A password is required if calibration mode is being enabled and the existing password is not 0.
5 Language Reference Output Commands Output commands enable the output, power-on, and protection functions. OUTPut[:STATe] ON|OFF OUTPut[:STATe]? This command enables or disables the specified output(s). The enabled state is On (1); the disabled state is Off (0). The state of a disabled output is a condition of zero output voltage and a zero source current (see *RST). The query returns 0 if the output is off, and 1 if the output is on. The *RST value = Off.
Language Reference 5 Source Commands Source commands program the voltage, current, triggered, and protection functions. [SOURce:]CURRent[:LEVel][:IMMediate][:AMPLitude] |MIN|MAX [SOURce:]CURRent[:LEVel][:IMMediate][:AMPLitude]? [MIN|MAX] [SOURce:]CURRent[:LEVel]:TRIGgered[:AMPLitude] |MIN|MAX [SOURce:]CURRent[:LEVel]:TRIGgered[:AMPLitude]? [MIN|MAX] These commands set the immediate and the triggered output current. Values are programmed in amperes.
5 Language Reference Note that triggered values can be programmed outside these limits, but an error will be generated when the trigger occurs. Model (V rating) 8V 10V 15V 20V 30V 40V 60V 80V 100V 150V 300V 600V Minimum voltage 0 0 0 0 0 0 0 0 0 0 0 0 Maximum voltage 8.4 10.5 15.75 21 31.5 42 63 84 105 157.5 315 630 [SOURce:]VOLTage:LIMit:LOW |MIN|MAX [SOURce:]VOLTage:LIMit:LOW? [MIN|MAX] This command sets the low voltage limit of the output.
Language Reference 5 Status Commands Status commands program the power supply’s status registers. As shown in the following figure, the power supply has three groups of status registers; Operation, Questionable, and Standard Event. The Operation and Questionable status groups each consist of the Condition, Enable, and Event registers and NTR and PTR filters.
5 Language Reference The Standard Event group is programmed with Common commands as described later in this section. Common commands also control additional status functions such as the Service Request Enable and the Status Byte registers. STATus:PRESet This command sets all defined bits in the Operation and Questionable PTR registers. The command clears all defined bits in the Operation and Questionable NTR and Enable registers.
Language Reference 5 STATus:OPERation:NTR STATus:OPERation:PTR STATus:OPERation:NTR? STATus:OPERation:PTR? These commands set or read the value of the Operation NTR (Negative-Transition) and PTR (Positive-Transition) registers.
5 Language Reference STATus:QUEStionable:ENABle STATus:QUEStionable:ENABle? This command and its query set and read the value of the Questionable Enable register. This register is a mask for enabling specific bits from the Questionable Event register to set the questionable summary bit (QUES) of the Status Byte register. This bit (bit 3) is the logical OR of all the Questionable Event register bits that are enabled by the Questionable Status Enable register. The Preset value = 0.
Language Reference 5 *ESE *ESE? This command programs the Standard Event Status Enable register bits. The programming determines which events of the Standard Event Status Event register (see *ESR?) are allowed to set the ESB (Event Summary Bit) of the Status Byte register. A "1" in the bit position enables the corresponding event. All of the enabled events of the Standard Event Status Event Register are logically OR-ed to cause the Event Summary Bit (ESB) of the Status Byte Register to be set.
5 Language Reference *SRE *SRE? This command sets the condition of the Service Request Enable Register. This register determines which bits from the Status Byte Register are allowed to set the Master Status Summary (MSS) bit and the Request for Service (RQS) summary bit. A 1 in any Service Request Enable Register bit position enables the corresponding Status Byte Register bit and all such enabled bits then are logically OR-ed to cause Bit 6 of the Status Byte Register to be set.
Language Reference 5 System Commands System commands control system functions that are not directly related to output control, measurement, or status functions. Common commands are also used to control system functions. SYSTem:COMMunicate:RLSTate LOCal|REMote|RWLock SYSTem:COMMunicate:RLSTate? This command configures the remote/local state of the instrument according to the following settings. LOCal The instrument is set to front panel control (front panel keys are active).
5 Language Reference *IDN? This query requests the power supply to identify itself. It returns a string of four fields separated by commas. Agilent Technologies xxxxxA 0 , Manufacturer Model number followed by a letter suffix Zero or serial number if available Firmware revision, power supply revision *OPT? This query requests the unit to identify any installed options. A 0 indicates no options are installed.
Language Reference 5 Trigger Commands Trigger commands consist of the Abort, Trigger, and Initiate commands. Initiate commands initialize the trigger system. Trigger commands control the triggering of the power supply. ABORt This command cancels any trigger actions in progress and returns the trigger system to the IDLE state, unless INIT:CONT is enabled. It also resets the WTG bit in the Status Operation Condition register. ABORt is executed at power-on and upon execution of *RST.
6 Programming Examples Output Programming Example ........................................................................ 86 Trigger Programming Example........................................................................ 88 This chapter contains several example programs to help you develop programs for your own application.
6 Programming Examples Output Programming Example This program sets the voltage, current, over-voltage, and the overcurrent protection. It turns the output on and takes a voltage measurement. When done, the program checks for instrument errors and gives a message if there is an error.
Programming Examples 6 ' Set the over voltage level .WriteString "VOLT:PROT:LEV " & Str$(overVoltSetting) ' Turn on over current protection .WriteString "CURR:PROT:STAT " & Str$(overCurrOn) ' Set the current level .WriteString "CURR " & Str$(CurrSetting) ' Turn the output on .WriteString "OUTP ON" ' Make sure that the output is on before continuing .WriteString "*OPC?" .ReadString ' Measure the voltage .WriteString "Meas:Volt?" measVolt = .
6 Programming Examples Trigger Programming Example This example illustrates how to set up and trigger a voltage and current change. The voltage is measured before and after the trigger.
Programming Examples 6 ' Set the voltage .WriteString "VOLT" & Str$(VoltSetting) ' Set the current level .WriteString "CURR " & Str$(CurrSetting) ' Set the triggered voltage and current levels .WriteString "VOLT:TRIG " & Str$(trigVoltSetting) .WriteString "CURR:TRIG " & Str$(trigCurrSetting) ' Turn the output on .WriteString "OUTP ON" ' Make sure that the output is on .WriteString "*OPC?" .ReadString ' Measure the voltage before triggering the change .WriteString "MEAS:VOLT?" MeasureVolt = .
Appendix A Specifications Performance Specifications ............................................................................ 92 Supplemental Characteristics ......................................................................... 93 Outline Diagram................................................................................................. 96 This chapter lists the specifications and supplemental characteristics of the Agilent N8700 power supplies.
Appendix A Specifications Performance Specifications Agilent Models N8731A – N8742A and Models N8754A – N8762A Model 3.3kW 5kW N8731A N8732A N8733A N8734A N8754A N8735A N8755A N8736A N8756A N8737A N8757A N8738A N8758A N8739A N8759A N8740A N8760A N8741A N8761A N8742A N8762A 8V 10V 15V 20V 30V 40V 60V 80V 100V 150V 300V 600V 20V 30V 40V 60V 80V 100V 150V 300V 600V 400A 330A 220A 165A 110A 85A 55A 42A 33A 22A 11A 5.
Specifications Appendix A Supplemental Characteristics Agilent Models N8731A – N8742A and Models N8754A – N8762A Model 3.3kW 5kW N8731A N8732A N8733A N8734A N8754A N8735A N8755A N8736A N8756A N8737A N8757A N8738A N8758A N8739A N8759A N8740A N8760A N8741A N8761A N8742A N8762A Output Response Time: (to settle to within ±1.0% of the rated output, with a resistive load) Up, full load 3.3kW 0.08s 0.08s 0.08s Up, full load 5kW Down, full load 3.3kW 0.02s 0.1s 0.
Appendix A Specifications Supplemental Characteristics (continued) Model 3.3kW 5kW N8731A N8732A N8733A N8734A N8754A N8735A N8755A N8736A N8756A N8737A N8757A N8738A N8758A N8739A N8759A N8740A N8760A N8741A N8761A N8742A N8762A Analog Programming and Monitoring: Vout voltage Iout voltage Vout resistance 0 - 100%, 0-5V or 0-10V, user selectable, Accuracy & linearity = ± 0.
Specifications Appendix A Supplemental Characteristics (continued) Model 3.3kW 5kW N8731A N8732A N8733A N8734A N8754A N8735A N8755A N8736A N8756A N8737A N8757A N8738A N8758A N8739A N8759A N8740A N8760A N8741A N8761A N8742A N8762A Regulatory Compliance: EMC Complies with European EMC Directive for test and measurement products. ● IEC/EN 61326-1 ● CISPR 11, Group 1, class A ● AS/NZS CISPR 11 ● ICES/NMB-001 Complies with the Australian standard and carries the C-Tick mark.
Appendix A Specifications 88.0mm+/-0.3mm Outline Diagram VOLTAGE DC VOLTS DC AMPS CURRENT OVP PROT FINE LIMIT UVL OCP/488 LAN OUT ON N8749A System DC Power Supply 482.0+/-1.0mm 39.0mm+/-0.3mm 423.0+/-1.0mm 60.5mm 92.0mm A 86.0mm+/-0.3mm A 42.0mm 497.5mm (150V to 600V models) A 92.0mm 442.5+/-1.0mm Bus-Bar Detail 8V to 100V Models 40.0 mm 80.0mm 5.0mm Output Cover Detail 8V to 100V Models 30.0mm 10.5mm 50.0mm 108.0mm NOTES: Holes marked “A” are for chassis slide mounting.
Appendix B Verification and Calibration Verification ......................................................................................................... 97 Calibration ........................................................................................................ 126 The verification procedures described in this appendix verify that the power supply is operating normally and is within published specifications.
Appendix B Verification and Calibration Equipment Required The equipment listed in the following table, or the equivalent to this equipment, is required for the calibration and performance tests. Test records for all models are at the end of this verification section. Type Specifications Recommended Model Digital Voltmeter Resolution: 10 nV @ 1V; Readout: 8 1/2 digits; Accuracy: 20 ppm Agilent 3458A or equivalent Current Monitor 15A (0.1Ω) 0.04%, TC=4ppm/°C 100A (0.01Ω) 0.04%, TC=4ppm/°C 300A (0.
Verification and Calibration Appendix B Measurement Techniques Electronic Load Many of the test procedures require the use of a variable load capable of dissipating the required power. If a variable resistor is used, switches should be used to either; connect, disconnect, or short the load resistor. For most tests, an electronic load can be used.
Appendix B Verification and Calibration WARNING SHOCK HAZARD Before starting the verification procedures, check to make sure that the startup mode is set to Safe-Start (see page 44). Constant Voltage Tests Refer to the appropriate test record in the following section for the instrument settings for each of the following tests.
Verification and Calibration Appendix B CV Source Effect Test category = performance This test measures the change in output voltage that results from a change in AC line voltage from the minimum to maximum value within the line voltage specifications. 1 Turn off the power supply and connect the ac power line through a variable voltage transformer. 2 Connect a DVM and an electronic load as shown in figure A. Set the variable voltage transformer to nominal line voltage.
Appendix B Verification and Calibration 4 Program the power supply to program the output current to its maximum programmable value (Imax) and the output voltage to its full-scale value and enable the output. Let the oscilloscope run for a few seconds to generate enough measurement points. On the Agilent Infiniium scope, the maximum peak-to-peak voltage measurement is indicated at the bottom of the screen on the right side. Divide this value by 10 to get the CV peak-to-peak noise measurement.
Verification and Calibration Appendix B Constant Current Tests Refer to the appropriate test record in the following section for the instrument settings for each of the following tests. Current Programming and Readback Accuracy Test category = performance, calibration This test verifies that the current programming and measurement functions are within specifications. 1 Turn off the power supply and connect the current shunt directly across the output. Connect the DVM across the current shunt.
Appendix B Verification and Calibration 5 Divide the voltage drop (DVM reading) across the current monitoring resistor by its resistance to convert to amps and record this value (Iout). 6 Short the electronic load. Divide the voltage drop (DVM reading) across the current shunt by its resistance to convert to amps and record this value (Iout).
Verification and Calibration Appendix B Test Record – Agilent N8731A [8V, 400A, 3.3kW] Agilent N8731A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 8 mV _____________ _____________ + 20 mV Vout + 8 mV High Voltage Vout Measurement Readback 7.992 V Vout − 16 mV _____________ _____________ 8.008 V Vout + 16 mV CV Load Effect − 6.2 mV _____________ + 6.2 mV CV Source Effect − 2.
Appendix B Verification and Calibration Test Record – Agilent N8732A [10V, 330A, 3.3kW] Agilent N8732A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 10 mV _____________ _____________ + 25 mV Vout + 10 mV High Voltage Vout Measurement Readback 9.990 V Vout − 20 mV _____________ _____________ 10.010 V Vout + 20 mV − 6.5 mV _____________ + 6.
Verification and Calibration Appendix B Test Record – Agilent N8733A [15V, 220A, 3.3kW] Agilent N8733A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 15 mV _____________ _____________ + 37.5 mV Vout + 15 mV High Voltage Vout Measurement Readback 14.985 V Vout − 30 mV _____________ _____________ 15.015 V Vout + 30 mV CV Load Effect − 7.3 mV _____________ + 7.
Appendix B Verification and Calibration Test Record – Agilent N8734A [20V, 165A, 3.3kW] Agilent N8734A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 20 mV _____________ _____________ + 50 mV Vout + 20 mV High Voltage Vout Measurement Readback 19.98 V Vout − 40 mV _____________ _____________ 20.
Verification and Calibration Appendix B Test Record – Agilent N8735A [30V, 110A, 3.3kW] Agilent N8735A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 30 mV _____________ _____________ + 75 mV Vout + 30 mV High Voltage Vout Measurement Readback 29.97 V Vout − 60 mV _____________ _____________ 30.03 V Vout + 60 mV − 9.5 mV _____________ + 9.
Appendix B Verification and Calibration Test Record – Agilent N8736A [40V, 85A, 3.3kW] Agilent N8736A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 40 mV _____________ _____________ + 100 mV Vout + 40 mV High Voltage Vout Measurement Readback 39.96 V Vout − 80 mV _____________ _____________ 40.
Verification and Calibration Appendix B Test Record – Agilent N8737A [60V, 55A, 3.3kW] Agilent N8737A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 60 mV _____________ _____________ + 150 mV Vout + 60 mV High Voltage Vout Measurement Readback 59.94 V Vout − 120 mV _____________ _____________ 60.
Appendix B Verification and Calibration Test Record – Agilent N8738A [80V, 42A, 3.3kW] Agilent N8738A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 80 mV _____________ _____________ + 200 mV Vout + 80 mV High Voltage Vout Measurement Readback 79.92 V Vout − 160 mV _____________ _____________ 80.
Verification and Calibration Appendix B Test Record – Agilent N8739A [100V, 33A, 3.3kW] Agilent N8739A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 100 mV _____________ _____________ + 250 mV Vout + 100 mV High Voltage Vout Measurement Readback 99.9 V Vout − 200 mV _____________ _____________ 100.
Appendix B Verification and Calibration Test Record – Agilent N8740A [150V, 22A, 3.3kW] Agilent N8740A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 150 mV _____________ _____________ + 375 mV Vout + 150 mV High Voltage Vout Measurement Readback 149.85 V Vout − 300 mV _____________ _____________ 150.15 V Vout + 300 mV − 27.5 mV _____________ + 27.
Verification and Calibration Appendix B Test Record – Agilent N8741A [300V, 11A, 3.3kW] Agilent N8741A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 300 mV _____________ _____________ + 750 mV Vout + 300 mV High Voltage Vout Measurement Readback 299.7 V Vout − 600 mV _____________ _____________ 300.
Appendix B Verification and Calibration Test Record – Agilent N8742A [600V, 5.5A, 3.3kW] Agilent N8742A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 600 mV _____________ _____________ + 1.5 V Vout + 600 mV High Voltage Vout Measurement Readback 599.4 V Vout − 1.2 V _____________ _____________ 600.6 V Vout + 1.
Verification and Calibration Appendix B Test Record – Agilent N8754A [20V, 250A, 5kW] Agilent N8754A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 25 mV _____________ _____________ + 55 mV Vout + 25 mV High Voltage Vout Measurement Readback 19.98 V Vout − 30 mV _____________ _____________ 20.
Appendix B Verification and Calibration Test Record – Agilent N8755A [30V, 170A, 5kW] Agilent N8755A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 37.5 mV _____________ _____________ + 82.5 mV Vout + 37.5 mV High Voltage Vout Measurement Readback 29.97 V Vout − 45 mV _____________ _____________ 30.03 V Vout + 45 mV − 9.5 mV _____________ + 9.
Verification and Calibration Appendix B Test Record – Agilent N8756A [40V, 125A, 5kW] Agilent N8756A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 50 mV _____________ _____________ + 110 mV Vout + 50 mV High Voltage Vout Measurement Readback 39.96 V Vout − 60 mV _____________ _____________ 40.
Appendix B Verification and Calibration Test Record – Agilent N8757A [60V, 85A, 5kW] Agilent N8757A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 75 mV _____________ _____________ + 165 mV Vout + 75 mV High Voltage Vout Measurement Readback 59.94 V Vout − 90 mV _____________ _____________ 60.
Verification and Calibration Appendix B Test Record – Agilent N8758A [80V, 65A, 5kW] Agilent N8758A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 100 mV _____________ _____________ + 220 mV Vout + 100 mV High Voltage Vout Measurement Readback 79.92 V Vout − 120 mV _____________ _____________ 80.
Appendix B Verification and Calibration Test Record – Agilent N8759A [100V, 50A, 5kW] Agilent N8759A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 125 mV _____________ _____________ + 275 mV Vout + 125 mV High Voltage Vout Measurement Readback 99.9 V Vout − 150 mV _____________ _____________ 100.
Verification and Calibration Appendix B Test Record – Agilent N8760A [150V, 34A, 5kW] Agilent N8760A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 187 mV _____________ _____________ + 422.5 mV Vout + 187 mV High Voltage Vout Measurement Readback 149.85 V Vout − 225 mV _____________ _____________ 150.15 V Vout + 225 mV − 27.5 mV _____________ + 27.
Appendix B Verification and Calibration Test Record – Agilent N8761A [300V, 17A, 5kW] Agilent N8761A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 375 mV _____________ _____________ + 825 mV Vout + 375 mV High Voltage Vout Measurement Readback 299.7 V Vout − 450 mV _____________ _____________ 300.
Verification and Calibration Appendix B Test Record – Agilent N8762A [600V, 8.5A, 5kW] Agilent N8762A Report No _______________ Description Date __________________ Minimum Specs. Results Maximum Specs. Minimum Voltage Vout Measurement Readback 0 mV Vout − 750 mV _____________ _____________ + 1.65 V Vout + 750 mV High Voltage Vout Measurement Readback 599.4 V Vout − 900 mV _____________ _____________ 600.
Appendix B Verification and Calibration Calibration Refer to the “Equipment Required” section in this appendix for a list of the equipment required for calibration. A general outline of the procedure is as follows: As shipped from the factory the calibration password is 0, which means password protection is removed and the ability to enter calibration mode is unrestricted. If a password has subsequently been set, you must enter the correct password - otherwise an error will occur.
Verification and Calibration Appendix B Step 5. Select the first voltage calibration point. CAL:LEV P1 *OPC? Step 6. Measure the output voltage and enter the data. CAL:DATA Step 7. Select the second voltage calibration point. CAL:LEV P2 *OPC? Step 8. Measure the output voltage and enter the data. CAL:DATA Step 9. Exit calibration mode. CAL:STAT OFF Current Programming and Measurement Calibration Step 1. Connect a precision shunt resistor to an output.
Appendix C Service Types of Service Available............................................................................. 130 Repackaging for Shipment............................................................................. 130 Operating Checklist......................................................................................... 130 Error Messages ............................................................................................... 132 Recycling Plastic Components ......................
Appendix C Service Types of Service Available If your instrument fails during the warranty period, Agilent Technologies will replace or repair it free of charge. After your warranty expires, Agilent Technologies will replace or repair it at a competitive price. Contact your nearest Agilent Technologies Service Center. They will arrange to have your instrument repaired or replaced.
Service Appendix C Symptom Check Action No output. All displays and indicators are blank. Is the AC power cord defective? Check continuity. Replace if necessary. Is the AC input voltage within range? Check AC input voltage. Connect to appropriate voltage source. Output is present momentarily, but shuts off quickly. Display indicates AC. Does the AC source voltage sag when a load is applied? Check AC input voltage. Connect to appropriate voltage source.
Appendix C Service Error Messages Displaying the SCPI error queue The entire error queue is read, then emptied, using the following command: SYST:ERR? Error List The following table documents the various error messages that the power supply supports: 132 Error Device-dependent Errors (these errors set Standard Event Status register bit #3) 0 No error This is the response to the ERR? query when there are no errors.
Service Appendix C Command Errors (these errors set Standard Event Status register bit #5) −100 Command error Generic syntax error. −101 Invalid character An invalid character was found in the command string. −102 Syntax error Invalid syntax was found in the command string. Check for blank spaces. −103 Invalid separator An invalid separator was found in the command string.
Appendix C Service Command Errors (continued) −141 Invalid character data Either the character data element contains an invalid character, or the element is not valid. −144 Character data too long The character data element contains more than 12 characters. −148 Character data not allowed A discrete parameter was received, but a string or numeric parameter was expected. −150 String data error Generic string data error −151 Invalid string data An invalid character string was received.
Service Appendix C Execution Errors (continued) −231 Data questionable The measurement accuracy is suspect. −232 Invalid format The data format or structure is inappropriate. −233 Invalid version The version of the data format is incorrect to the instrument. −240 Hardware error The command could not be executed because of a hardware problem with the instrument. −241 Hardware missing The command could not be executed because of missing hardware, such as an option.
Appendix C Service Recycling Plastic Components The following table identifies the plastic components in your instrument that must be recycled when the instrument is disposed of.
Appendix D Compatibility Differences – In General ................................................................................ 138 Compatibility Command Summary ............................................................... 139 The Agilent N8700 power supplies are programmatically compatible with the Agilent 603xA power supplies. This means that you can remotely program the Agilent N8700 power supplies using the same commands that are used to program the 603xA power supplies.
Index Differences – In General The following table documents the general differences between the way Compatibility commands work on the Agilent N8700 power supplies and the way they worked on the Agilent 603xA power supplies. Item Differences Queries The Agilent N8700 will respond to multiple queries. It will not allow a space separator between numbers.
Index Compatibility Command Summary The following table documents the compatibility commands that the Agilent N8700 power supplies support. All compatibility commands are accepted; however, some commands do nothing. Compatibility Command Description Similar SCPI Command ASTS? Note 1 Queries the accumulated status (ASTS). The response represents the sum of the binary weights of the ASTS register bits. The ASTS register is set to the present status after being queried.
Index Compatibility Command Description Similar SCPI Command RCL Recalls the saved settings. There are up to 16 store/recall states. Saved settings must have been previously stored using the STO command. *RCL ROM? Queries the revision date of the power supply's firmware. *IDN? RST Resets any tripped protection. OUTP:PROT:CLE SRQ Generates error 203. The service request capability of the power supply is only supported using the SCPI commands *SRQ SRQ? Always returns 0.
Index Index 4 488 .................................................................................. 11, 52 A ABOR ................................................................................... 83 AC input connections ................................................................... 21 AC INPUT ...................................................................... 12, 95 accessories ......................................................................... 16 analog programming external resistance ..
Index D J daisy-chain shut down ..................................................... 46 damage ................................................................................ 16 data socket ......................................................................... 57 DC AMPS ............................................................................ 10 DC VOLTS............................................................................ 10 Default Gateway .................................................
Index rack mounting .................................................................... 18 recycling plastic componenets .................................................. 136 remote voltage sensing .................................................... 28 repackaging ...................................................................... 130 repacking............................................................................. 16 response data types ..........................................................
Index trigger programming example ......................................... 88 turn-on check out .............................................................. 38 U UFP ....................................................................................... 11 under-voltage check ......................................................... 39 under-voltage limit ............................................................ 42 USB ID string ......................................................................
Manual Updates The following updates have been made to this manual since its publication date. 9/28/10 Information about battey charging has been added to page 30. Information about parallel connections has been updated on pages 31 and 32. 2/28/11 Text changes have been made to the single-phase distribution figure on page 20, and to the Note on page 21. 1/11/12 Under Environmental Conditions, information about operating humidity has been updated, and the LED statement has been removed on page 94.
