Model: 9120A, 9121A, 9122A, 9123A, 9124, 9150, 9151, 9152, 9153 Single Output Programmable DC Power Supply USER MANUAL
Safety information Please review the following safety precautions before operating our equipment. General information The following safety precautions should be observed before using this product and any associated instrumentations. This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury. Read and follow all installation, operation, and maintenance information carefully before using the product.
TABLE OF CONTENTS 1. Introduction............................................................................................................ 4 Description ............................................................................................................................................... 4 Features .................................................................................................................................................... 4 2. Quick Reference ..............................
1. Introduction Description Models 9120A, 9121A, 9122A, 9123A, 9124, 9150, 9151, 9152, and 9153 are fully programmable, linear DC Power Supplies that provide you with clean and reliable power, high resolution and accuracy combined with fast transient response times and excellent temperature stability. The front panel keys and the control knob provide a convenient interface for adjusting Voltage and Current, storing and recalling operating states or enabling/disabling the output.
2. Quick Reference 2.1 The Front Panel For Models: 9120A, 9121A, 9122A, 9123A, 9124 2 1 3 4 For Models: 6 5 9150, 9151, 9152, 9153 2 1 3 7 4 5 6 7 8 1 VFD display 2 Rotary knob 3 Power switch 4 Numeric keys, auxiliary.
5 Function keys 6 Up/Down keys and “Enter” key 7 Output terminals 8 Digital Voltmeter terminals (For Model 9150, 9151, 9152, 9153) 2.
1 Digital Voltmeter terminals. (For models 9150, 9151, 9152, and 9153, these terminals are in the front panel) 2 AC power inlet and fuse compartment 3 Ventilation holes 4 Quick connect terminal for Remote sensing and digital port functions (digital I/O, DFI/RI and ext. trigger) 5 TTL interface connector for remote control 6 AC Power selection switch (110 V / 220 V) 2.3 Preliminary Checkout The following steps help you verify that the power supply is ready for use. 1.
The first row displays the actual output voltage value and current and the state of power supply. The second row displays the voltage measured by the DVM (on left) and the Set Value for the voltage of the power supply. To obtain additional information about the instrument, press and hold the SHIFT button during Power Up. On the display you will see the following: First row: V/A rating and DVM voltage range second row: Firmware version and serial number Sourc: XXV XA Meas: XXV Ver: 1.
3) Set the voltage value Set a different voltage value. Make sure that the set value and output value are the same. Also check if the output current value is zero or close to zero A. 4) Ensure that the voltage can be adjusted from zero to the maximum rated value. Current Output Check The following steps check the basic current functionality by shorting the power supply’s output. 1) Turn on the power supply. 2) Disable the output by pressing the Out on/off . The ON annunciator is turned off.
1.6 Adjusting the Carrying Handle To adjust the position, grasp the handle by the sides and pull outward. Then rotate the handle to the desired position. Dimensions: 214.5 mm (W) x 88.2 mm (H) x 354.
For Models: 9150, 9151, 9152, 9153 1.7 Rack Mounting the Instrument You can mount the power supply in a standard 19-inch rack cabinet using the IT-E151 rack mount kit. Note: Remove the carrying handle and the two plastic ears before rack-mounting the instrument. To remove the handle, grasp the handle on the side, pull outwards and rotate it to a special position where the arrow on the handle and the arrow on the plastic ears are in opposite directions. Now you can pull the handle outwards.
To rack mount a single instrument, order rack mount kit IT-E151 To rack mount two instruments (models 9120A, 9121A, 9122A, 9123A, 9124 only) side-by-side, order rack mount kit IT-E151, In this case you don’t need to use the front cover panel. 3. Front-panel Operation So far we have covered the quick start chapter which briefly introduced the front panel operation and how to check basic voltage and current functionality.
Numerical Keys/Secondary Shift Functions Shift Functions V/mΩ: Toggle between DVM and mΩ Meter mode 0.1 W: Set the range of the mΩ Meter to 0.
▼：Down key Enter: Press to confirm numerical entries 3.2 Front-panel Operation Overview 1) The power supply at shipment is preconfigured for front-panel operation. At power-on, the power supply will automatically start up in front panel operation mode. 2) When the power supply is in remote operation mode, the front-panel is disabled. You can revert to Local mode, by pressing the Local button or by sending the appropriate SCPI command.
to assign and store the current settings to the selected memory location To recall a setting: Press the Recall key. Use the knob to scroll to the memory location where the settings you want to recall are stored. Press ENTER to recall and activate those settings You can also use the SCPI command:*SAV *RCL to save and recall respectively. 3.6 Menu Operation 3.6.1 Menu Description Press Shift :Menu to enter menu mode. The menu parameters will be displayed in the bottom right field of the display.
None< Default > Even Odd Address Set Set the communication address (range from 0 to 30) Address=＊＊ Port Mode Select mode of digital port Trigger< Def > RI/DFI Note: DFI is not available for models 9150, 9151, 9152, 9153 DIGITAL I/O Note: Digital output not available for models 9150, 9151, 9152, 9153 Trig Source Setting the trigger mode Shift Immediat Pressing + Trigger keys will generate a trigger pulse External Ext. Trigger signal is applied to the digital port in the rear panel.
2 X 100 Steps 1 X 200 Steps Exit Out On Timer Output timer. If Timer State is set to ON, power supply output will turn off after the timer elapsed. Timer State Setting POWER ON timer state On Enable Output Timer. Output will turn off after value set in menu “Timer Set” counted down to zero. Off< Default > Timer Set Setting time of POWER ON timer. Timer= **S Exit Exit 3.6.
TRIGGER: Pins 1 and 2 can be used to apply external trigger sources to the power supply. These pins can also be used to control the list operation RI/DFI： The Inhibit Input pin can be used to control the output state of the power supply (RI function). The Fault Output pin (DFI function) can be used to indicate internal faults of the power supply. NOTE: The Fault indicator function (DFI) is only available for models 9120A, 9121A, 9122A, 9123A, and 9124.
The RI input has 3 modes: LATCHING, LIVE and OFF LATCHING When the TTL signal at the RI port transitions from TTL High to Low, the output of the power supply will turn off. LIVE The output state of the power supply changes according to the signal level applied to the RI port. If the level is TTL high, the power supply output is on; if the level at the RI port is TTL Low, the output of the power supply is off. OFF The signal applied to the RI port does not affect the output state of the power supply.
Memory area Number of groups/ area Capacity/group 1 1 4KByte 2 2 2KByte 3 4 1KByte 4 8 512 Byte Example: Group C can store 4 groups, each group has a maximum capacity of 1KByte. The power supply executes a list in CONTINIOUS or Step mode. In CONTINIOUS mode, the power supply will start executing the list once. As soon as a trigger signal is received, it will wait until the next trigger signal is received. Before you edit the list file, set the trigger source in the menu to “immediate”.
16） Press Shift file. Press List + Shift + List to set the list file, then press Shift + Trigger to run the list to stop. If you have created several list files, you can call the list file that you need by “Call ListFile” function in the menu. Press Shift Esc two times to exit menu operation. And then press + Trigger to run the file that you called. Press Shift + List Shift + List to set it, press to stop running.
3.7 Output Operation For front panel operation, press On/Off to enable/disable the output. If the power supply is in remote control mode, you can send SCPI command (OUTPut ON|OFF) to change the state of output. 3.
LATCHING: When the level of INH port changes from high to low, the output of power supply turns off. LIVE: The output state of power supply changes according to the level of the INH port. If the level of INH is TTL High, the output is on. If the level at pin INH is TTL Low, the output of the power supply is off. OFF: The level state of INH does not affect the output state of the power supply. c) When “Port Mode” in the menu is set to “DIGITAL I/O”, “INH” pin functions as a digital input pin.
By default, the power supply is in DVM mode. Press and mΩ Meter mode. Shift followed by V/mΩ to toggle between Voltmeter 3.10 Milliohm Meter The instrument is also equipped with a Milliohm Meter which can accurately measure resistance up to 10 Ω. To protect the resistor, make sure to select an appropriate power range before connecting it to the power supply.
GPIB (model 9123A only) interface via a serial converter cable. This chapter describes how to use a computer to control the output of the power supply. 4.1 Serial adapter cables RS232 to TTL serial Converter cable IT-E131 The DB9 interface connector on the rear panel of the power supply provides a TTL level interface.
GPIB to TTL adapter IT-E135 (Model 9123A only) The DB9 interface connector on the rear panel of the power supply provides a TTL voltage level interface.
Data Frame Format Parity=None Start Bit Parity=Odd, Even Stop Bit 8 Data Bits Start Bit Parity Bit 8 Data Bits Stop Bit End of String character is ’\n’ (0x0a) DB9 Interface Details The DB9 connector in the rear panel of the power supply provides a TTL level signal .It can be connected to a standard PC interface via the IT-E131, IT-E132 or IT-E135 isolated converter/adapter. Flow Control There are no hardware flow controls for sending and receiving commands to the power supply.
4.3 SCPI Command Overview Common IEEE488.
[:DATA] {} :DVM :LEVel {} [:DATA] {} :SAVe :INITital Output Commands OUTPut [:STATe] {} [:STATe]? :TIMer [:STATe] {} [:STATe]? :DATA {} :DATA? [SOURce:] MODE {} MODE? VOLTage [:LEVel] {} [:LEVel]? :PROTection :STATe {} :STATe? [:LEVel] {} [:LEVel]? CURRent [:LEVel] {} [:LEVel]? LIST :MODE {} :MODE? :STEP {} :STEP? :COUNt {} :COUNt? :CURRent [:LEVel] {,} [:LEVel]? {} :VOLTage [:LEVel] {,} [:L
:VOLTage[:DC]? :CURRent[:DC]? :POWer[:DC]? :DVM[:DC]？ :RESistance[DC]? Port Configuration Commands [SOURce:] SYSTem : SENSe [:STATe] {} [:STATe]? PORT :FUNCtion {} : FUNCtion? RI :MODE {} :MODE? DFI :SOURce {} :SOURce? DIGital :OUTPut[:STATe] {} :INPut[:STATe]? SENSe :RESistance: :RANGe {LOW | MIDdle | HIGH>} :RANGe? Trigger Command TRIGger [:IMMediate] :SOURce {} SCPI Condition Register You can obtain the state of the p
4 5 EXE CME 7 PON 3 5 6 QUES ESB MSS RQS OPER 7 preliminary checkout. Execution error. Command parameter overflows or the condition is not right. Command error. Syntax or semantic error occurs when receiving information. Power on. It is 1when power supply is reset. Status byte register If a quest enable condition changes, QUES is 1. If a standard event status enable register changes, ESB is 1. If a operation event enable register changes, OPER is 1.
4.4 SCPI Command Description Common IEEE488.2 Commands *CLS This command clears the following registers: Standard event status register Quest condition register Operation event register Status byte register Error code Command syntax: *CLS Parameter: None *ESE This command sets the parameter of the standard event enable register. The value determines which bit value of the standard event register is set to 1. The ESB bit in of status byte register will change to 1 to reflect the changes.
BK Precision manufacturer XXXX product mode XXXXXX product serial number VX．XX software version number For example: BK PRECISION，9120A，000004，V1.01 *OPC When all commands sent to the instrument prior to this command have been executed, OPC of the standard event status register will be set to 1. Command syntax: *OPC Parameter: None Query syntax: *OPC? Return parameter: *PSC This command controls whether or not the power supply sends when it is reset.
Reference Command: *ESE *ESR? *PSC *STB? *STB? This command reads data from the status byte register. After executing this command, the status byte register is reset.
(60) (65) (70) (80) (90) (101) (100) (110) 1. 2. 3. 4.
Bit map of standard event status enable register Bit Position Bit name Bit Value 7 no use 6 no use 5 no use 4 no use 3 no use 2 unr 4 1 OT 2 0 OV 1 STATus:QUEStionable:CONDition? This command queries the parameters of the quest condition register. When a bit of the quest condition changes, the corresponding bit value in the quest event register will be set to 1.
Parameter: 0~255 Reset value: Consult *PSC command Example: STATus: OPERation:ENABle 128 Query syntax: STATus: OPERation:ENABle? Return parameter: Reference command: *PSC Output Commands OUTPut[:STATe] This command sets the power supply output on or off. Command syntax: OUTPut[:STATe] Parameter: 0|1|ON|OFF *RST value: OFF Query syntax: OUTPut:STATe? Return parameter: 0|1 Usage: If output timer is required, send command OUTPUT:TIMER ON first, then set OUTPUT ON.
Example: MODE FIX Query syntax: [SOURce:] MODE？ Return parameter: Usage: MODE FIX command can also be used to stop a list execution. [SOURce:]CURRent [:LEVel] This command sets the current value of the power supply.
STEP List operation is step mode. Command syntax: [SOURce:]LIST:MODE Parameter: CONTinious|STEP Query syntax: [SOURce:]LIST:MODE? Return parameter: [SOURce:]LIST:STEP This command sets the operation mode of the list file.
Parameter: None Example: LIST:CURR? 1; Return parameter: [SOURce:]LIST :VOLTage[:LEVel] This command sets the voltage step. Command syntax: [SOURce:]LIST:VOLTage [:LEVel] Parameter: 0~360V Unit: V mV Example: LIST:VOLT 1,3V; Query syntax: [SOURce:]TRANsition: VOLTage:TLEVel? Parameter: None Example: LIST:VOLT? ; Return parameter: [SOURce:]LIST:WIDth This command sets the minimum step time. Decimal fractions are not allowed for this command.
Example: LIST:SAV 1 [SOURce:]LIST:RCL This command can recall the list file saved before from the register. Command syntax: [SOURce:]LIST:SAV Parameter: 1~8 Example: LIST:SAV 1 [SOURce:]LIST:UNIT This command sets the unit for the list width in either seconds (SECOND) or milliseconds (MSECOND). Command syntax: [SOURce:]LIST:UNIT Parameter: SECOND or MSECOND Example: LIST:UNIT SECOND Measurement commands Note: All measurement commands have units in Volts (V), Ampere (A), or Watts (W).
HIGH: 1W resistance range Command syntax: SENSe:RESistance:RANGe Parameter: LOW | MIDdle | HIGH Example: RES:RANG LOW Query syntax: SENSe:RESistance:RANGe? Return parameter: MEASure[:SCALar]:RESistance[:DC]? This command queries the resistance reading of the milliohm meter.
[SOURce:]DIGital:OUTPut[:STATe] This command sets the output state of the digital port. This command can be used when the mode of the port is set to DIGITAL. (Not available for models 9150, 9151, 9152, and 9153) Command syntax: SOURce:OUTPut[:STATe] Paremeter: OFF|ON|0|1 [SOURce:]DIGital:INPut[:STATe]? This command sets the input state of port. This command can be used when the mode of the port is set to DIGITAL.
LIST:VOLT 2,4 LIST:UNIT SECOND LIST:WID 1,1 LIST:WID 2,2 LIST:NAME ‘TEST’ LIST:SAVE 1 MODE LIST TRIGGER 44
5. Specifications 5.
Output Ratings ( 0 °C~40 °C) Load Regulation ±(％of output+offset) Line Regulation ±(％of output+offset) Programming resolution Readback/Meter resolution Front Panel setting resolution Programming accuracy, 12 months (25 °C ± 5 °C) ±(％of output+offset) Readback / Meter accuracy 12months (25 °C ± 5 °C) ±(％of output+offset) Ripple & Noise (20 Hz ~20 MHz) Temperature coefficient, (0 °C~40 °C) ±(％of output+offset) Readback temperature, coefficient, ±(％of output+offset) *) Voltage Current LVP* Voltage Current Vo
Load Regulation ±(%of output+offset) Line Regulation ±(%of output+offset) Voltage Current Voltage Current Voltage Current Voltage Current Voltage <0.01% + 0.5 mV <0.1% + 10 mA <0.02% + 0.1 mV <0.1% + 1 mA 0.1 mV 1 mA 0.1 mV 1 mA 0.1 mV <0.01% + 1 mV <0.1% + 5 mA <0.02% + 1 mV <0.01% + 1 mA 1 mV 1 mA 0.1 mV 0.1 mA 0.5 mV Current 1 mA 1 mA <0.01% + 1 mV <0.1% + 2 mA <0.02% + 1 mV <0.01% + 0.1 mA 1 mV 0.1 mA 0.1 mV 0.1 mA 0.5 mV 1 mA Voltage <0.02%+2 mV <0.02%+6 mV <0.02%+12 mV Current <0.
1 year AC Input Ratings (selectable via switch on the rear panel) 220 AV±10%，47～63 Hz 110 AV±10%，47～63 Hz Maximum output power 9120A 96 W 9121A 100 W 9124 86 W 9122A 150 W 9123A 150 W 9150 312 W 9151 540 W 9152 540 W 9153 540 W Cooling Fan cooled Operating Temperature 0 to 40 °C Storage Temperature -20 to 70 °C. Environmental Conditions Designed for indoor use in an installation category II, pollution degree 2 environments.
SERVICE INFORMATION Warranty Service: Please go the support and service section on our website www.bkprecision.com to obtain a RMA #. Return the product in the original packaging with proof of purchase to the address below. Clearly state on the RMA the performance problem and return any leads, probes, connectors and accessories that you are using with the device. Non-Warranty Service: Please go the support and service section on our website www.bkprecision.com to obtain a RMA #.
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