OPERATOR’S MANUAL ABC-DM SERIES SWITCHING POWER SUPPLY VOLTAGE/CURRENT-STABILIZED DC SOURCE KEPCO INC. MODEL ABC-DM SERIES POWER SUPPLY ORDER NO. REV. NO. IMPORTANT NOTES: 1) This manual is valid for the following Model and associated serial numbers: MODEL SERIAL NO. REV. NO. 2) A Change Page may be included at the end of the manual. All applicable changes and revision number changes are documented with reference to the equipment serial numbers.
GETTING STARTED SIMPLIFIED OPERATING INSTRUCTIONS These instructions are a quick reference for getting started with Kepco’s ABC power supply. For more detailed information you are encouraged to read the accompanying Operator’s Manual. CONNECT THE LOAD. The Sense terminals must be connected for the power supply to work. For local sensing use the links supplied on the barrier strip at the rear. For remote sensing, remove the links and make the 4-wire connections at your load.
STORAGE LOCATIONS. Forty locations are available to either save active settings or to establish a local program that can be sequenced (EDIT PROG). STORE lets you save the active programmed settings (V SET, I SET, OV SET and OC SET). Just select a location (from 1 to 40). RECALL applies the V SET and I SET values previously stored. LOCAL PROGRAMMING. The same forty locations are also available for local programming.
Declaration of Conformity Application of Council directives: 73/23/EEC (LVD) 89/336/EEC(EMC) 93/68/EEC (CE mark) Standard to which Conformity is declared: EN61010-1: 2001 (Safety requirements for electrical equipment for measurement, control and laboratory use - Part 1) EN61326-1:1997 (Electrical equipment for measurement, control and laboratory use - EMC requirements) Manufacturer's Name and Address: KEPCO INC. 131-38 SANFORD AVENUE FLUSHING, N.Y.
TABLE OF CONTENTS SECTION PAGE SECTION 1 - INTRODUCTION 1.1 1.2 1.3 1.4 1.5 1.6 1.6.1 1.6.2 1.6.3 1.6.4 1.6.5 1.6.6 1.7 1.8 1.9 1.10 Scope of Manual ..................................................................................................................................... 1-1 General Description................................................................................................................................. 1-1 Specifications ......................................................
TABLE OF CONTENTS SECTION 3.3.12 3.3.13 3.3.14 3.3.14.1 3.3.14.1.1 3.3.14.2 3.3.14.3 3.3.14.4 3.3.14.5 3.3.14.6 3.3.14.7 3.3.14.8 3.3.15 3.4 3.4.1 3.5 3.5.1 3.5.2 3.5.3 3.6 3.6.1 3.6.2 3.6.3 3.6.3.1 3.6.3.2 3.6.3.3 3.6.4 3.7 3.7.1 3.7.2 3.7.3 3.7.3.1 3.7.3.2 3.7.3.3 3.7.3.4 3.7.3.5 3.7.3.6 3.7.3.7 3.7.3.8 3.7.3.9 3.7.3.10 3.7.3.11 3.7.3.12 3.7.3.13 3.7.4 3.7.4.1 3.7.4.2 3.7.4.3 3.7.4.4 3.7.4.5 3.7.4.6 3.7.4.7 3.7.4.8 3.7.5 3.7.6 3.7.7 3.8 ii PAGE Storing Power Supply Output Settings.....................
TABLE OF CONTENTS SECTION PAGE SECTION 4 - CALIBRATION 4.1 4.2 4.3 4.3.1 4.3.2 4.4 4.5 4.6 4.7 4.8 General.................................................................................................................................................... 4-1 Equipment Required................................................................................................................................ 4-1 Calibration Procedures ............................................................................
TABLE OF CONTENTS SECTION B.24 B.25 B.26 B.27 B.28 B.29 B.30 B.31 B.32 B.33 B.34 B.35 B.36 B.37 B.38 B.39 B.40 B.41 B.42 B.43 B.44 B.45 B.46 B.47 B.48 B.49 B.50 B.51 B.52 B.53 B.54 B.55 B.56 B.57 B.58 B.59 B.60 B.61 B.62 B.63 B.64 B.65 B.66 B.67 B.68 B.69 B.70 B.71 B.72 B.73 B.74 B.75 B.76 B.77 B.78 B.79 B.80 B.81 iv PAGE [SOUR:]LIST:CURRent:PROTect Command ......................................................................................... [SOUR:]LIST:CURRent:PROTect? Query........................
TABLE OF CONTENTS SECTION B.82 B.83 B.84 B.85 B.86 B.87 B.88 B.89 B.90 B.91 B.92 B.93 B.94 B.95 B.96 B.97 B.98 B.99 B.100 B.101 ABC 040104 PAGE SYSTem:COMMunication:SERial:ECHO Command ............................................................................. SYSTem:COMMunication:SERial:ECHO? Query .................................................................................. SYSTem:COMMunication:SERial:PACE Command ..............................................................................
LIST OF FIGURES FIGURE 1-1 1-1 1-2 1-3 1-4 2-1 2-2 2-3 2-4 2-5 2-6 2-7 3-1 3-2 3-3 3-4 3-5 A-1 B-1 B-2 B-3 B-4 B-5 B-6 B-7 B-8 vi TITLE PAGE ABC Series Power Supply........................................................................................................................... viii ABC Series Power Supply, Mechanical Outline Drawing........................................................................... 1-4 ABC Power Supply and RA 71 Rack Adapter, Outline Drawing ..........................
LIST OF TABLES TABLE 1-1 1-2 1-3 1-4 1-5 2-1 2-2 2-3 3-1 3-2 3-3 3-4 3-5 3-6 3-7 4-1 4-2 A-1 A-2 A-3 B-1 B-2 B-3 B-4 B-5 TITLE PAGE Model Parameters .......................................................................................................................................1-1 Maximum Overvoltage and Overcurrent Settings .......................................................................................1-1 ABC Specifications .................................................................
FIGURE 1-1.
SECTION 1 - INTRODUCTION 1.1 SCOPE OF MANUAL This manual contains instructions for the installation and operation of the ABC series of 100 Watt bench-top, voltage and current stabilized d-c power supplies manufactured by Kepco, Inc., Flushing, New York, U.S.A. 1.2 GENERAL DESCRIPTION The Kepco ABC Power Supply Series (Figure 1-1) consists of six single-output models as listed in Table 1-1. ABC Series Power Supplies can be operated from a wide range of a-c input power sources (85-265V a-c, 47 - 63Hz).
TABLE 1-3. ABC SPECIFICATIONS SPECIFICATION RATING/DESCRIPTION CONDITION 100/120/220/240V a-c Single phase 85-264V a-c Wide range 50-60Hz >63Hz Input leakage current exceeds specifications INPUT CHARACTERISTICS a-c Voltage nominal range Frequency nominal range Current 85V a-c 1.8A 120V a-c 1.3A 240V a-c 0.65A 264V a-c 0.60A Initial turn-on surge 5A peak for <150 usec Power Factor (min) EMC immunity to: 47-63Hz (400Hz) 120V 0.99 240V 0.
TABLE 1-3. ABC SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITION OUTPUT CHARACTERISTICS (Continued) Programming time 2ms max Programming accuracy Voltage Current Readback/Display accuracy Transient recovery to load change 0-100% <0.025% EO max 0.1% IO max ABC 10-10DM ABC 15-7DM 0.05% IO max ABC 25-4DM 0.025% IO max ABC 36-3DM ABC 60-2DM ABC 125-1DM Voltage <0.05% EO max Current <0.
FIGURE 1-1.
FIGURE 1-2.
FIGURE 1-3.
1.4 LOCAL CONTROL Front panel keypad entries are utilized for setting and adjusting output voltage and current under local control. The keypad's keys are organized to either directly execute commands, or to introduce a program that can either be run once or cycled. Calibration of the unit is facilitated by a password -protected, menu-driven procedure from the front panel. 1.5 REMOTE CONTROL The ABC Power Supply can be remotely controlled directly via either the IEEE 488.
1.6.5 USER-DEFINED VOLTAGE/CURRENT LIMITS The ABC output can be programmed not to exceed user-defined values. For example, the ABC 10-10DM, which has a maximum capacity of 10V, 10A, can be limited to 5.5V, 1A for working with circuitry that might be damaged by higher levels. Once the limits are set, the power supply becomes, in effect a 5.5V,1A supply and values exceeding the limit values will not be accepted. Refer to PAR. 3.3.11. 1.6.
1.9 SAFETY There are no operator serviceable parts inside the case. Service must be referred to authorized personnel. Using the power supply in a manner not specified by Kepco. Inc. may impair the protection provided by the power supply. Observe all safety precautions noted throughout this manual. Table 1-5 lists symbols used on the power supply or in this manual where applicable. TABLE 1-5. SAFETY SYMBOLS SYMBOL Meaning WARNING: RISK OF ELECTRIC SHOCK. ! 1.10 CAUTION: REFER TO REFERENCED PROCEDURE.
SECTION 2 - INSTALLATION 2.1 UNPACKING AND INSPECTION This instrument has been thoroughly inspected and tested prior to packing and is ready for operation. After careful unpacking, inspect for shipping damage before attempting to operate. Perform the preliminary operational check as outlined in PAR. 2.5. If any indication of damage is found, file an immediate claim with the responsible transport service. 2.2 TERMINATIONS AND CONTROLS a) Front Panel: Refer to Figure 2-1 and Table 3-1.
TABLE 2-1.
TABLE 2-3. RS232C PORT INPUT/OUTPUT PIN ASSIGNMENTS CONNECTOR PIN 1 RTN 2 3 4 RS 232 PORT (connector A1J5) 5 6 7 8 2.
Loc 0.000V NOTE: CV 0.000A indicates blinking colon (:), Command Entry status indicates blinking equal sign (=), Data Entry status FIGURE 2-3. LCD POWER ON DEFAULTS NOTE: Six keys with dual functions are labeled with both a command and a number. The command label is referred to when the unit is in command entry status; the number is referred to when the unit is in data entry status. 4. Press VSET key. Verify bottom line of LCD reads Vset nn (where nn = voltage setting). 5.
2.7.2 SOURCE POWER CONNECTIONS Source power is connected to the power supply via the three-wire power input cable supplied. See Table 1-3 for source power specifications. 2.7.3 D-C OUTPUT GROUNDING Connections between the power supply and the load and sensing connections may, despite all precautions such as shielding, twisting of wire pairs, etc., be influenced by radiated noise, or “noise pick-up”.
specified performance at the output terminals would be transferred without impairment to any load, regardless of electrical characteristics or proximity to each other. The stabilized d-c power supply is definitely not an ideal voltage or current source, and practical interfaces definitely fall short of the ideal.
2.7.6 LOAD CONNECTION USING LOCAL SENSING Figure 2-4 shows a typical configuration using local sensing and a grounded load; Figure 2-5 shows a typical configuration using local sensing with an isolated (“floating”) load. FIGURE 2-4. FIGURE 2-5.
2.7.7 LOAD CONNECTION USING REMOTE SENSING Figure 2-6 shows a typical configuration using remote sensing and a grounded load; Figure 2-7 shows a typical configuration using remote sensing with an isolated (“floating”) load. FIGURE 2-6. GROUNDED LOAD CONNECTIONS, REMOTE SENSING . FIGURE 2-7. 2.
SECTION 3 - OPERATION 3.1 GENERAL This section explains how to operate the ABC Power Supply. The power supply can be operated either in Local mode using the front panel keypad and LCD, or in Remote mode using SCPI commands via the GPIB or RS 232 bus. Operation in remote mode can be simplified by the use of the VISA driver available for download at http://www.kepcopower.com/drivers.htm. Local mode operation includes a description of the interaction between the LCD and the front panel keypad.
3.3.1.3 DISPLAY (LCD) The LCD is a 2-line display with a capacity of 16 characters per line. The information is generally arranged as follows (information that does not follow this format is self-explanatory). 3.3.1.4 • Top left: Loc/Rem/Rwl Local/Remote/Keypad locked Status (See PAR. 3.3.3 ) • Top right CV/CC Constant voltage mode/constant current mode • Bottom left: In command entry In data entry: n.nnnV (parameter) Output voltage e.g. OVset if OV SET key was pressed.
TABLE 3-1. KEY FUNCTIONS (CONTINUED) KEY POWER SUPPLY STATUS ACTIVE DESCRIPTION Command Entry Press to restore the power on default values: CV mode, output voltage = 0, output current = minimum (1-2% of IOmax), output enabled, overvoltage and overcurrent values per Table 1-2. Also resets overvoltage or overcurrent condition. 3.3.
TABLE 3-1. KEY FUNCTIONS (CONTINUED) KEY POWER SUPPLY STATUS ACTIVE 2 Data Entry Press to enter number 2. 3.3.1.2 3 Data Entry Press to enter number 3. 3.3.1.2 ENTER Data Entry Press to accept data entered and return to Command Entry status. 3.3.8 3.3.8, 3.3.14.1 Command Entry — In CV (constant voltage), press to decrease output voltage by increment equal to voltage resolution (≤.0.025% of EOmax).
Depressing any key on the keypad during the power up sequence will cause the power supply to enter the keypad test. To return to normal operation, follow the prompts, depressing keypad keys as indicated on the LCD. 3.3.3 SETTING LOCAL MODE When the power supply is turned on, it is automatically set to Local mode. If remote commands are accepted over the GPIB bus, the power supply will automatically go into Remote mode (Rem at the upper left of the LCD). Pressing the LOCAL key will restore Local mode.
(1-2% of IO max), overcurrent and overvoltage protection set to the maximum values per Table 1-2. The power supply remains in command entry status. 3.3.8 SETTING OUTPUT VOLTAGE OR CURRENT V SET and I SET set output voltage and current limit, respectively, when the unit is in constant voltage (CV) mode and set voltage limit and output current, respectively, when the unit is in constant current (CC) mode. The mode (CV or CC) is determined by the load together with the programmed settings.
The proper way to program the power supply is to initially program the operating parameter to zero and the complementary limit parameter to the desired maximum value. Subsequent commands should change only the operating parameter. (The operating parameter is the parameter that controls the output, e.g., voltage controls the output in voltage mode, current in current mode.) The complementary limit parameter should be programmed only when there is a need to change it. 3.3.
3.3.12 STORING POWER SUPPLY OUTPUT SETTINGS The programmed settings of voltage, current, overvoltage protection and overcurrent protection can be stored in one of the 40 memory locations available for local programming (see PAR. 3.3.14). With the power supply in command entry status , press STORE key. The LCD reads STORE mem nn where nn is the memory location where the settings are to be stored. Press ENTER or CLEAR to exit without changing setting. Enter memory location (from 1 to 40) and press ENTER.
3.3.14.1.1 MODIFYING PROGRAMMED TIME INTERVAL The TIME key offers a quick and easy way to change the time for any memory location. With the power supply in command entry status , press TIME key. The unit displays TIME @ mem = 01 indicating the current step to be changed. To change a different step, enter the step number using the numeric keys. To proceed, depress ENTER. The LCD displays TIMEval nn where nn is the time value set for the selected location.
TABLE 3-2. MEMORY LOCATION WORKSHEET MEMORY LOCATION I SET (Current) (A) V SET (Voltage) (V) OCset (Overcurrent Protection) (A) OV set (Overvoltage Protection) (V) TIMEval (0.
3.3.14.6 STOPPING A PROGRAM To set up a program to stop after running once, set the NEXT STEP address of the last memory location to be executed to 0. For example, with the power supply in command entry status , press EDIT PROG. Enter the last memory location you want executed (e.g. 14), then press ENTER. Press key until LCD reads ViewVAL Mem14 NEXT STEP . Enter 0 and press ENTER. The program will now stop after memory location 14 is executed. 3.3.14.
ing, and local lockout). Refer to PAR. 3.7 for a detailed explanation of SCPI programming, and to Appendix A and B for detailed explanations of IEEE 488 and SCPI commands, respectively. 3.4.1 DCL CONTROL The device clear and selected device clear can be set to operate in two modes. In the “output = 0V” mode, when the device clear (DCL) is received, the output of the power supply is set to zero volts.
TABLE 3-4. IEEE 488 (GPIB) BUS INTERFACE FUNCTIONS FUNCTION SUBSET SYMBOL Source Handshake SH1 Complete Capability (Interface can receive multiline messages) Acceptor Handshake AH1 Complete Capability (Interface can receive multiline messages) Talker T6 Basic talker, serial poll, unaddress if MLA (My Listen Address) (one-byte address) Listener L4 Basic listener, unaddress if MTA (My Talk Address) (one-byte address). Service Request SR1 Complete Capability.
TABLE 3-6. IEEE 488 (GPIB) BUS DATA MODE MESSAGES MNEMONIC 3.5.3 MESSAGE DESCRIPTION COMMENTS DAB Data Byte Received or Sent END End Received or Sent EOS End of String Received or Sent RQS Request Service Sent STB Status Byte Sent ABC VISA INSTRUMENT DRIVER The VISA instrument driver simplifies programming with a VISA compatible GPIB controller.
3.6.1 SETTING RS 232 BAUD RATE When the power supply is in local mode, command entry status , press MENU key until LCD displays BAUD RATE =. The top line of the LCD indicates the current RS 232 baud rate (default = 19200). Use and keys to scroll through the available baud rate settings (19200, 9600, 4800 or 2400). Press ENTER to accept new setting (new baud rate is effective immediately), or CLEAR to exit without changing setting. 3.6.
FIGURE 3-2. RS 232 IMPLEMENTATION Only four control characters (characters between 00H and 1FH) are acknowledged by the power supply: • Carriage Return (CR, 0DH) • Line Feed (LF, 0AH) • Back Space (BS, 08H) • Escape (ESC, 01BH) BS deletes the last character entered, with the exception of CR or LF characters. Either the CR or LF character acts as the line terminator, initiating parsing of the ASCII data sent to the ABC by the command originator.
3.6.3.3 XON XOFF METHOD The XON XOFF method allows the ABC to control when the command originator is allowed to send data. The command originator can only send data after the XON (transmission on) character (011H) has been received; the command originator stops sending data after receiving the XOFF (transmission off) character (013H), and waits until the XON character is received before sending additional data.
3.7.1 SCPI MESSAGES There are two kinds of SCPI messages: program messages from controller to power supply, and response messages from the power supply to the controller. Program messages consist of one or more properly formatted commands/queries and instruct the power supply to perform an action; the controller may send a program message at any time.
3.7.3.6 OUTPUT SUBSYSTEM This subsystem controls the power supply's voltage and current outputs 3.7.3.7 PROTECTION SUBSYSTEM This subsystem allows overvoltage/overcurrent protection tripping to be delayed to prevent brief transients (caused by application of power to a reactive load) from tripping overvoltage/overcurrent protection. 3.7.3.8 STATUS SUBSYSTEM This subsystem programs the power supply status register. The power supply has two groups of status registers: Operation and Questionable.
3.7.3.13 SYSTEM SUBSYSTEM This subsystem controls the RS 232 port, as well as system errors, passwords, security, language, beep, version and keyboard lockout 3.7.4 PROGRAM MESSAGE STRUCTURE SCPI program messages (commands from controller to power supply) consist of one or more message units ending in a message terminator. The message terminator is not part of the syntax; it is defined by the way your programming language indicates the end of a line (“newline” character).
ROOT : (colon) ABORt subsystem [SOURce:] subsystem ABORt DISPlay :CONTrast 0 to 1 :CONTrast? [:WINDow]:TEXT[:DATA] “....
TABLE 3-7.
3.7.4.4 DATA Some commands require data to accompany the keyword either in the form of a numeric value or character string. Data always follows the last keyword of a command or query (e.g., VOLT:LEV:TRIG 14 or SOUR:VOLT? MAX 3.7.4.5 DATA SEPARATOR Data must be separated from the last keyword by a space (e.g., VOLT:LEV:TRIG 14 or SOUR:VOLT? MAX 3.7.4.6 MESSAGE UNIT SEPARATOR When two or more message units are combined in a program message, they must be separated by a semicolon (;) (e.g.
paths corresponding to the subsystems. The root keywords for the ABC Power Supply are :ABORt, :CALibrate, :DISPlay, :INITiate, :LIST, :MEASure, :OUTPut, [:SOURce], :STATus, :SYSTem and :TRIGger. Because the [SOURce] keyword is optional, the parser moves the path to the next level, so that VOLTage, CURRent, and FUNCtion commands are at the root level. Each time the parser encounters a keyword separator, the parser moves to the next indented level of the tree diagram.
3.7.7 SCPI PROGRAM EXAMPLES Refer to Appendix B, Figures B-1 through B-7 for examples illustrating the use of SCPI commands. Figure 3-5 is an example of a program using SCPI commands to program the ABC Power Supply. The program illustrated is for a configuration using an IBM PC or compatible with a National Instruments GPIB interface card. (It will be necessary to consult the manufacturer’s data to achieve comparable functions with an interface card from a different manufacturer.
SECTION 4 - CALIBRATION 4.1 GENERAL This section contains the calibration instructions for the Power Supply. It is recommended that the user be familiar with Local Mode operation (PAR.3.3) before calibrating the unit. A full calibration consist of a voltage calibration and a current calibration. Both voltage and current calibrations consist of a zero and a full scale calibration.
NOTES: Keys with dual functions are labeled with both a command and a number. The command label is referred to when the unit is in command entry status; the number is referred to when the unit is in data entry status. 1. With the power supply in command entry status Calibration mode, data entry status . , press CALIB key. power supply enters 2. Enter password (4 digits) and press ENTER. If password is incorrect, **WRONG PASSWORD** flashes, then LCD returns to command status. (See PAR. 4.
4. LCD will flash Iout F.S.adj. **WAIT** then Iout F.S. adj < >. Monitor DVM and use or keys to increase or decrease output voltage as necessary to get DVM reading as close as possible to value listed below (without exceeding value listed). If the " and # keys do not provide the required adjustment range, press the 1 (increase) or 3 (decrease) key for additional range. – ABC 10-10DM: 1.000V – ABC 15-7DM: 0.700V – ABC 25-4DM: 1.000V – ABC 36-3DM: 0.750V – ABC 60-2DM: 2.000V – ABC 125-1DM: 1.
4.5 RESTORING PREVIOUS CALIBRATION VALUES Each time the unit is calibrated, the previous calibration values are retained in non-volatile memory. If it is determined that a new calibration is erroneous, the previous calibration values can be restored. 1. If the unit is not in command entry status , press CLEAR or RESET to put the unit in command entry status. 2. Press MENU until LCD reads GoTo Previous CALIB? 1 . 3. Press 1, then ENTER. LCD reads Calibration ! PassWord . 4.
The Master calibration should never be overwritten. Factory, Master, and First are set to the same values when at the factory. The Working calibration is the active calibration. Each time a CAL:SAV is executed, the values are saved in the Working (active) area. At the same time, the values previously stored in Working are moved to Prior, and the values previously stored in Prior are moved to Oldest. The values previously stored in Oldest are no longer available.
APPENDIX A - IEEE 488.2 COMMAND/QUERY DEFINITIONS A.1 INTRODUCTION This appendix defines the IEEE 488.2 commands and queries used with the ABC Power Supply These commands and queries are preceded by an asterisk (*) and are defined and explained in Figures A-1 through A-14, arranged in alphabetical order. Table A-1 provides a quick reference of all IEEE 488.2 commands and queries supported in the ABC Power Supply. TABLE A-1. IEEE 488.2 COMMAND/QUERY INDEX A.2 COMMAND PAR. COMMAND PAR. *CLS A.
A.4 *ESE? — STANDARD EVENT STATUS ENABLE QUERY Syntax: *ESE? *ESE? Return value: Integer> value per Table A-2. Description: Returns the mask stored in the Standard Event Status Enable Register. Contents of Standard Event Status Enable register (*ESE) determine which bits of Standard Event Status register (*ESR) are enabled, allowing them to be summarized in the Status Byte register (*STB).
A.8 *OPC? *OPC? — OPERATION COMPLETE QUERY Syntax: *OPC? Return value: <1> (ASCII) placed in output queue when power supply has completed operation. Description: Indicates when pending operations have been completed.When all pending operations are complete (all previous commands have been executed and changes in output level have been completed) a “1” is placed in the Output Queue. Subsequent commands are inhibited until the pending operations are completed.
*CLS *ESE 60 Power supply clears status data. Power supply enables bits 5, 4, 3 and 2, allowing command error, execution error, device dependent error and query error to set the Event Status Summary bit when an STB command is executed. *ESE? Returns 60, (value of the mask) verifying that bits 5, 4, 3 and 2 are enabled. *ES Unknown command will set command error (Bit 5). *ESR? Returns 32 (bit 5 set), indicating Command Error has occurred since the last time the register was read.
*SAV A.12 * SAV — SAVE COMMAND Syntax: *SAV (1 to 40) Description: Saves the present state of output voltage, output current, overvoltage and overcurrent to the specified memory location. This command stores the present state of the power supply to one of 40 memory locations. The following parameters are stored by *SAV: CURR[:LEV][:IMM], VOLT[:LEV][:IMM], CURR:PROT[:LEV], and VOLT:PROT[:LEV]. The *SAV command also saves the language status and output on/off state.
A.16 *TRG — TRIGGER COMMAND Syntax: *TRG *TRG Description: Triggers the power supply to be commanded to preprogrammed values of output current and voltage. When the trigger is armed (checked by examining WTG bit in Status Operational Condition register) *TRG generates a trigger signal. The trigger will change the output of the power supply to the output voltage and current levels specified by VOLT:TRIG and CURR:TRIG commands and clear the WTG bit in the Status Operation Condition register.
APPENDIX B - SCPI COMMAND/QUERY DEFINITIONS B.1 INTRODUCTION This appendix defines the SCPI subsystem commands and queries used with the ABC Power Supply. Subsystem commands are defined in PAR. B.2 through B.100, arranged in groups as they appear in the tree diagram, Figure 3-3. Table B-1 provides a quick reference of all SCPI subsystem commands and queries used in the Interface Card. TABLE B-1. SCPI SUBSYSTEM COMMAND/QUERY INDEX COMMAND PAR. COMMAND PAR. ABORt B.2 [SOUR:]CURR:PROT:CLE B.
B.2 ABOR ABORt COMMAND Syntax: Short Form: ABOR Long Form: ABORt Description: Cancels previously stored trigger levels, resets WTG. The ABORt command cancels any pending trigger levels previously stored by the CURR:TRIG or VOLT:TRIG commands. The pending level is set equal to the corresponding immediate value. ABORt also resets the WTG (Wait TriGger) bit in the Operation Condition status register.
B.3 CALibrate:CURRent:LEVel COMMAND Syntax: Short Form: CAL:CURR:LEV {MIN | MAX} CAL:CURR:LEV Long Form: CALibrate:CURRent:LEVel {MIN | MAX} Description: Selects Current calibration, only effective with power supply in Calibrate status. CAL:CURR:LEV MIN selects Current Zero Calibration. CAL:CURR:LEV MAX selects Current Full Scale Calibration. Normally Current Zero is done first, then Current Full Scale Calibration. Related Commands: CAL:STAT, CAL:PASS, CAL:VOLT, CAL:CURR, CAL:ZERO, CAL:SAVE.
B.5 CAL:PASS CALibrate:PASSword COMMAND Syntax: Short Form: CAL:PASS new_password (new_password is 4 digits) Long Form: CALibrate:PASSword new_password (new_password is 4 digits) Description: Changes the password used to put the power supply in Calibrate status. To execute this command, the power supply must be in Calibrate status (see CAL:STAT). password = 4 digits, required to enter Calibrate status. Related Commands: CAL:PASS, CAL:VOLT, CAL:CURR, CAL:ZERO, CAL:SAVE. (See example, Figure B-2.) B.
CAL:VOLT[:DATA] 3 increases output voltage by large increment. This command is used during voltage calibration to adjust the output voltage for voltage zero calibration as well as full scale voltage calibration. Output voltage is monitored on a calibrated digital multimeter and increased or decreased as required using this command. This command is only effective if Calibration status and either Voltage Zero or Voltage Full Scale calibration are active.
DISP:MODE? B.15 DISPlay:MODE? QUERY Syntax: Short Form: DISP:MODE? Return Value: NORMAL or TEXT. Long Form: DISPlay:MODE? Description: Identifies the LCD mode. Returns NORMAL when the display is in normal mode, TEXT when the display is in text mode. Related Commands: DISP:MODE, DISP:TEXT, *RST. (See example, Figure B-3.) DISP:TEXT B.
Description: Operation is identical to OUTPut:STATe command (PAR. B.40) and is provided for compatibility with other vendors products. LIST:CURR B.22 LIST:CURRent COMMAND Syntax: Short Form: LIST:CURR[:LEV] Long Form: LIST:CURRent[:LEVel] = digits with decimal point and Exponent, e.g., 2.71E+1 for 27.1 Description: Sets the current (Amps) value for the memory location selected by LIST:IND.
LIST:CURR:PROT? B.25 [SOUR:]LIST:CURRent:PROTect? QUERY Syntax: Short Form: LIST:CURR[:LEV]? Long Form: LIST:CURRent[:LEVel]? Return Value: = digits with decimal point and Exponent, e.g., 2.71E+1 for 27.1 Description: Returns current protection value (Amps) stored in indexed memory location selected by LIST:IND. Related Commands: LIST:IND. LIST:IND?, LIST:CURR. (See example, Figure B-4.) LIST:DWEL B.26 [SOUR:]LIST:DWELl COMMAND Syntax: Short Form: LIST:DWEL (0.
B.32 [SOUR:]LIST:SEQuence:STARt COMMAND Syntax: LIST:SEQ:STAR Short Form: LIST:SEQ:STAR (1 to 40) Long Form: LIST:SEQuence:STARt (1 to 40) Description: Determines the first memory location (start of sequence) to be addressed during a programmed sequence. Sets memory location (from 1 to 40) of first memory location to be addressed when a program (chain of memory locations) is executed. This is the start address for the STEP and RUN commands (LOCal mode).
MEAS:CURR? B.38 MEASure[:SCALar]:CURRent[:DC]? QUERY Syntax: Short Form: MEAS[:SCAL]:CURR[:DC]? Long Form: MEASure[:SCALar]:CURRent[:DC]? Return Value: (digits with decimal point and Exponent) Description: Measures actual current. This query returns the actual value of output current (measured at the output terminals) as determined by the programmed value of voltage and current and load conditions.
Description: Starts or stops user programmed sequence. Program sequence is preprogrammed using LIST commands, starting address is established by LIST:SEQ:STAR. When PROG:SEL:STAT command is executed the keyboard is locked until the program stops running. *RST command aborts a program that is running. Related commands: PROG:SEL:STAT?, LIST:CURR, LIST:CURR:PROT, LIST:VOLT, LIST:VOLT:PROT, LIST:DWEL, LIST:SEQ:NEXT, LIST:SEQ:STAR B.
B.51 [SOURce:]CURRent:[:LEVel]TRIGgered[:AMPlitude]? QUERY Syntax: CURR:TRIG? Short Form: [SOUR:]CURR[:LEV]:TRIG[:AMP]? Long Form: [SOURce:]CURRent[:LEVel]:TRIGgered[:AMPlitude]? Return Value: = digits with decimal point and Exponent, e.g., 2.71E+1 for 27.1 Description: Returns the current value established by CURR:TRIG command. (See example, Figure B-1.) B.
B.53 [SOURce:]CURRent:PROTection[:LEVel]? QUERY Syntax: CURR:PROT? Short Form: [SOUR:]CURR:PROT[:LEV]? {MIN | MAX} Long Form: [SOURce:]CURRent:PROTection[:LEVel]? {MIN | MAX} Return Value: = digits with decimal point and Exponent, e.g., 2.71E+1 for 27.1 Description: Returns value representing current protection level.CURR:PROT? returns value set by CURR:PROT. CURR:PROT?MAX returns maximum current protection value (see Table 1-2).
VOLT? B.59 [SOURce:]VOLTage[:LEVel][:IMMediate][:AMPlitude]? QUERY Syntax: Short Form: [SOUR:]VOLT[:LEV][:IMM][:AMP]? {MIN | MAX} Long Form: [SOURce:]VOLTage[:LEVel][:IMMediate][:AMPlitude]? {MIN | MAX} Description: Identifies programmed voltage, maximum allowable voltage, or minimum voltage (always 0). The VOLT? query returns the programmed value of voltage. Actual output voltage will depend on load conditions. The VOLT?MAX query returns the maximum voltage allowed for a particular model (e.g.
protection level can be programmed independently of the output voltage level. Setting voltage protection to a value lower than the output voltage causes the voltage protection mechanism to trigger immediately. (See example, Figure B-6.) B.65 [SOURce:]VOLTage:PROTection[:LEVel]? QUERY Syntax: VOLT:PROT? Short Form: [SOUR:]VOLT:PROT[:LEV] MIN, MAX Long Form: [SOURce:]VOLTage:PROTection[:LEVel] MIN, MAX Return Value: = digits with decimal point and Exponent, e.g., 2.71E+1 for 27.
B.67 [SOURce:]VOLTage:PROTection:TRIPped? QUERY Syntax: Short Form: [SOUR:]VOLT:PROT:TRIP? Return Value: 0 or 1 VOLT:PROT:TRIP? Long Form: [SOURce:]VOLTage:PROTection:TRIPped? Description: Identifies whether overvoltage condition was detected. Returns 0 if overvoltage protection tripped; 1 if overvoltage protection not tripped. Related Commands: VOLT:PROT, VOLT:PROT:CLE. (See example, Figure B-6.) FUNC:MODE? B.
STAT:OPER? B.72 STATus:OPERation[:EVENt] QUERY Syntax: Short Form: STAT:OPER[:EVEN]? Long Form: STATus:OPERation[:EVENt]? Return Value: 0 to 1313 (1 + 32 + 256 + 1024). Description: Indicates changes in conditions monitored by Operational Event Register. Returns the value of the Operation Event register. The Operation Event register is a read-only register which holds (latches) all events that occur. Reading the Operation Event register clears it. . (See example, Figure B-7.) STAT:PRES B.
STAT:QUES? B.74 STATus:QUEStionable[:EVENt]? QUERY Syntax: Short Form: STAT:QUES[EVEN]? Long Form: STATus:QUEStionable[EVENT]? Return Value: actual register value Description: Indicates questionable events that occurred since previous STAT:QUES? query. Returns the value of the Questionable Event register (see Table B-3). The Questionable Event register is a read-only register which holds (latches) all events. Reading the Questionable Event register clears it. (See example, Figure B-7.
B.79 SYSTem:COMMunication:GPIB:ADDRess? QUERY Syntax: SYST:COMM:GPIB:ADDR? Short Form: SYST:COMM:GPIB:ADDR? Long Form: SYSTem:COMMunication:GPIB:ADDRess? Return Value: 0 to 30 Description: Identifies selected power supply GPIB address. SYST:COMM:SER:BAUD B.
B.87 SYSTem:COMMunication:SERial:PROMpt? QUERY Syntax: SYST:COMM:SER:PROM? Short Form: SYST:COMM:SER:PROM {ON | OFF} Long Form: SYSTem:COMMunication:SERial:PROMpt {ON | OFF} Return Value: {ON | OFF} Description: Identifies whether prompt is enabled (ON) or disabled (OFF) prompt (see PAR. 3.6.3.2). SYST:ERR? B.88 SYSTem:ERRor[:NEXT]? QUERY Syntax: Short Form: SYST:ERR[:NEXT]? Return Value: Long Form: SYSTem:ERRor[:NEXT]? Description: Posts error messages to the output queue.
7 TABLE B-4. ERROR MESSAGES ERROR MESSAGE 0,“No error” -100,“Command error” ESR ERROR BIT SET (SEE PAR. A.5) None EXPLANATION No error Command Error bit 5 Command and data understood, but more information included which is not recognized. Command Error bit 5 First 4 characters recognized, subsequent characters not recognized. Command Error bit 5 For example, VOLT.
SYST:LANG? B.93 SYSTem:LANGuage? QUERY Syntax: Short Form: SYST:LANG? Return Value: SCPI or COMP Long Form: SYSTem:LANGuage? Description: Identifies whether unit responds to older command formats. SCPI means the unit will not respond to older formats such as LIST:TIME. COMP means the unit will respond to older formats such as LIST:TIME for compatible operation with software written for ABC power supplies up to Revision 1. SYST:LANG B.
SYST:SET B.99 SYSTem:SET COMMAND Syntax: Short Form: SYST:SET {CM0 | CM1 | DC0 | DC1 | LF0 | LF1 | STR | RLX) Long Form: SYSTem:SET {CM0 | CM1 | DC0 | DC1 | LF0 | LF1 | STR | RLX) Description: Sending SYST:SET CM1 sets the unit to operate in compatible mode and have all GPIB functions compatible with software version 1.2 and lower units. Sending SYST:SET CM0 sets the unit to be fully SCPI 1997 compliant. Sending SYST:SET DC1 causes Device Clear to be identical to *RST command.
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