KEPCO ABC-DM Series User manual

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 num-
bers. Before using this Instruction Manual, check your equipment serial number to identify
your model. If in doubt, contact your nearest Kepco Representative, or the Kepco Docu-
mentation Office in New York, [phone], requesting the correct revision for your par-
ticular model and serial number.
3) The contents of this manual are protected by copyright. Reproduction of any part can be
made only with the specific written permission of Kepco, Inc.
Data subject to change without notice.
KEPCO®
THE POWER SUPPLIER™
MODEL
OPERATOR’S MANUAL
ORDER NO. REV. NO.
KEPCO, INC. 131-38 SANFORD AVENUE FLUSHING, NY. 11355 U.S.A. TEL [phone] FAX [phone]
email: [e-mail] World Wide Web: www.kepcopower.com
KEPCO INC.
An ISO 9001 Company.
ABC-DM SERIES
SWITCHING POWER SUPPLY
VOLTAGE/CURRENT-STABILIZED DC SOURCE
ABC-DM SERIES
POWER SUPPLY
©2017, KEPCO, INC
P/N 243-0888-r3

ABCCOND040104 A
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. (See the Oper-
ator’s manual for more information.)
CONNECT SOURCE POWER. The power supply accepts a wide range of source
power: 85-264V a-c, 47-63 Hz or 400Hz. The POWER switch turns the unit on and off. The power
supply is equipped with a grounded North American 2-blade plug. Overseas users may substitute
their national plug; the chassis end is a standard 15A IEC connector.
LOCAL OPERATION
THE ALPHANUMERIC DISPLAY (LCD). Operations are done from the keypad
and observed on the LCD. Optimize LCD contrast by pressing MENU until LCD reads CONTRAST,
then press numbers until viewing is optimum. The LCD displays the actual output voltage and cur-
rent and the operating mode: Local or Remote and constant voltage (CV) or current (CC). and a
blinking colon (:), or a blinking equal sign (=). Enter a command when you see a blinking colon (:),
enter numbers when you see a blinking equal sign (=). Six keys have a dual function (command/
number): the blinking colon (:) or equal sign (=) tells you which key function is effective.
USING THE KEYPAD. Use ENTER to accept numbers entered or execute a command.
Use CLEAR if you make a mistake and don’t want to change the status quo. Valid entries are
accompanied by a short beep; invalid entries by a longer buzz. (The speaker can be disabled by
pressing MENU until LCD display SPEAKER and entering 0.)
OUTPUT SETTINGS. V SET sets output voltage; I SET sets output current. Depending
on the mode (CV or CC), one setting acts as a limit. (For example, in CC mode, V SET is the volt-
age limit and I SET is the output current setting.) The operating mode (CC or CV) is determined by
the load combined with the V SET and I SET settings. The "and #keys can be used to increase
or decrease output voltage (CV mode) or current (CC mode) by the least amount possible (approxi-
mately the maximum rating divided by 4000).
OUTPUT ON/OFF. (ON) enables programmed output settings to appear at the output
(OFF) sets output voltage and current to zero and the LCD reads “Output is OFF’”
RESET. Use RESET to restore the power-on defaults (output on, V SET and I SET at zero, OV
SET and OC SET at approximately 10% above rated output).
PROTECTION. OV SET and OC SET establish protection for overvoltage and overcurrent
conditions. If the output attempts to exceed programmed OV SET or OC SET values, the LCD indi-
cates which condition occurred, and the output goes to zero. RESET or cycle the power supply off
and on to recover.
CALIBRATION. CALIB leads you through a digital calibration procedure (password pro-
tected). The initial password is the voltage rating plus current rating (e.g., 1010 for ABC 10-10DM).
You can change it using the MENU. The previous calibration is saved and can be restored. The
original factory calibration can also be restored. (See Section 4 of the Operator’s Manual.)
GETTING STARTED
SIMPLIFIED OPERATING INSTRUCTIONS

BABCSVC040104
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 pro-
gramming. Each location stores values for six parameters: output voltage, output current, overcur-
rent protection, overvoltage protection, time duration (between 0.01 and 300 seconds) for the
programmed parameters, and the address of the next memory location in the program. Local pro-
grams are set up using EDIT PROG; a MEMORY LOCATION WORKSHEET table included in the
Operator’s Manual helps you to program Kepco’s ABC.
Select the starting location and enter the desired values for each parameter. Use "or #key to
scroll forward or backward to view the next parameter or memory location. Set the last address to 0
for the program to run once and stop. If you want the program to cycle indefinitely, set the last
address to the starting address. After all parameters have been entered, use CLEAR or ENTER to
exit EDIT PROG mode. To run the program one step at a time, press STEP, select a starting loca-
tion, then press STEP to execute the next step. To run the program, press RUN and select the start-
ing location. If the program is designed to cycle, press CLEAR or RESET to stop it. The TIME key
offers a quick and easy way to change the time for any memory location without entering EDIT
PROG mode.
MENU FEATURES. Press MENU to scroll through the MENU functions. Press CLEAR to
exit, enter number(s) and press ENTER to change a feature. The following features are included:
•Set LCD contrast: set from 1 to 9 for optimum viewing.
•Set GPIB address: Set from1 to 30
•Set RS 232 Baud Rate: Set to 19200, 9600, 4800 or 2400.
•Loop Back Test: Aids isolating RS 232 problems
•DCL Control: Allows DCL (Device Clear) to either set output to 0V or have no effect on out-
put voltage
• Power up output on/off: Allows the output to be either on or off when unit is first turned on.
•Set speaker on/off: 0 to disable beeps and buzzes, 1 to enable.
•Change password (required for calibration):. Enter old password, then the new pass-
word.
•Restore previous or factory calibration values: (See Section 4 of Operator’s Manual.)
•View Model number, Serial number and firmware version (not changeable)
•Set maximum values for V SET and I SET: To prevent damage to a sensitive load the
maximum output voltage and current can be reduced from the rated value to a user-
selected maximum.
•Delay protection: To allow for large initial transients (e.g., from inductive loads), overvolt-
age and overcurrent protection can be delayed about 8 seconds by entering a count (count
of 30 is about one second, maximum count is 255). If an overvoltage or overcurrent condi-
tion is still present at the end of the delay, protection trips the power supply off.

228-1795 Dec of Conf ABC
A
Declaration of Conformity
Application of Council directives:
2006/95/EC (LVD)
2004/108/EC (EMC
Standard to which Conformity is declared:
IEC61010-1, 3rd Edition Safety requirements for electrical equipment for
measurement, control, and laboratory use
(designed to meet)
EN55011 Limits and Methods of Measurement of Radio
Disturbance Characteristics of Industrial,
scientific and radio frequency equipment
(designed to meet)
EN61000-4-11, EN61000-4-4 Level 3, EN61000-4-2
Level 4, EN61000-4-5 Level 4, EN61000-3-2,
IEC61000-3-3, IEC61000-4-3, IEC61000-4-6,
IEC61000-4-8
Voltage Dips, Fast Transient_EFT,
ESD Level 4, Surge Immunity Criteria B, Input
Harmonic, Flicker, Radiated Immunity (designed
to meet), Conducted Immunity (designed to
meet), Magnetic Field Immunity (designed to
meet)
Manufacturer's Name:
Manufacturer's Address:
KEPCO, INC.
131-38 SANFORD AVENUE
FLUSHING NY 11355
USA
Importer's Name:
Importer's Address:
Type of Equipment: Component Power Supply
Model Series
ABC (all models)
Model No.:
Year of Manufacture:
I, the undersigned, declare that the product specified above, when used in
conjunction with the conditions of conformance set forth in the product
instruction manual, complies with the requirements of the Low Voltage Directive
2006/95/EC, which forms the basis for application of the CE Mark to this
product.
Place: Kepco, Inc.
131-38 Sanford Ave.
Flushing NY 11355
USA
Date: Mark Kupferberg
(Full Name)
Executive Vice President
(position)

ABC 040104 i
TABLE OF CONTENTS
SECTION PAGE
SECTION 1 - INTRODUCTION
1.1 Scope of Manual ..................................................................................................................................... 1-1
1.2 General Description................................................................................................................................. 1-1
1.3 Specifications .......................................................................................................................................... 1-1
1.4 Local Control ........................................................................................................................................... 1-7
1.5 Remote Control ....................................................................................................................................... 1-7
1.6 Features .................................................................................................................................................. 1-7
1.6.1 Digital Calibration............................................................................................................................... 1-7
1.6.2 Overvoltage/Overcurrent Protection .................................................................................................. 1-7
1.6.3 Programmable Overvoltage/Overcurrent Delay................................................................................. 1-7
1.6.4 Non-volatile Storage of Programmed Sequences or Active Settings ................................................ 1-7
1.6.5 User-defined Voltage/Current Limits.................................................................................................. 1-8
1.6.6 External Trigger/Remote On-Off Port ................................................................................................ 1-8
1.7 Equipment Supplied ................................................................................................................................ 1-8
1.8 Accessories ............................................................................................................................................. 1-8
1.9 Safety ...................................................................................................................................................... 1-9
1.10 Ripple/Noise Measurement ..................................................................................................................... 1-9
SECTION 2 - INSTALLATION
2.1 Unpacking and Inspection ....................................................................................................................... 2-1
2.2 Terminations and Controls ...................................................................................................................... 2-1
2.3 Source Power Requirements .................................................................................................................. 2-3
2.4 Cooling .................................................................................................................................................... 2-3
2.5 Preliminary Operational Check................................................................................................................ 2-3
2.6 Installation ............................................................................................................................................... 2-4
2.7 Wiring Instructions................................................................................................................................... 2-4
2.7.1 Safety Grounding............................................................................................................................... 2-4
2.7.2 Source Power Connections ............................................................................................................... 2-5
2.7.3 D-C Output Grounding....................................................................................................................... 2-5
2.7.4 Power Supply/Load Interface............................................................................................................. 2-5
2.7.5 Load Connection - General................................................................................................................ 2-6
2.7.6 Load Connection Using Local Sensing.............................................................................................. 2-7
2.7.7 Load Connection Using Remote Sensing.......................................................................................... 2-8
2.8 Operating Configuration .......................................................................................................................... 2-8
SECTION 3 - OPERATION
3.1 General.................................................................................................................................................... 3-1
3.2 Remote On/Off ........................................................................................................................................ 3-1
3.3 Local Mode Operation ............................................................................................................................. 3-1
3.3.1 Front Panel Keypad and LCD............................................................................................................ 3-1
3.3.1.1 Command Entry Status................................................................................................................ 3-1
3.3.1.2 Data Entry Status......................................................................................................................... 3-1
3.3.1.3 Display (LCD)............................................................................................................................... 3-2
3.3.1.4 Keypad Functions ........................................................................................................................ 3-2
3.3.2 Turning the Power Supply On............................................................................................................ 3-4
3.3.3 Setting Local Mode............................................................................................................................ 3-5
3.3.4 Adjusting LCD Contrast ..................................................................................................................... 3-5
3.3.5 Enabling/Disabling Audible Beeps..................................................................................................... 3-5
3.3.6 Enabling/Disabling DC Output Power................................................................................................ 3-5
3.3.6.1 Power Up Digital DC Output Control............................................................................................ 3-5
3.3.7 Reset ................................................................................................................................................. 3-5
3.3.8 Setting Output Voltage or Current ..................................................................................................... 3-6
3.3.8.1 Programming Techniques to Optimize Power Supply performance ............................................ 3-6
3.3.9 Setting Overvoltage or Overcurrent Protection.................................................................................. 3-7
3.3.10 Changing Protection Delay................................................................................................................ 3-7
3.3.11 Changing Maximum Voltage or Current Value .................................................................................. 3-7

ii ABC 040104
TABLE OF CONTENTS
SECTION PAGE
3.3.12 Storing Power Supply Output Settings.............................................................................................. 3-8
3.3.13 Recalling Stored Output Settings...................................................................................................... 3-8
3.3.14 Local Mode Programming of the Power Supply................................................................................ 3-8
3.3.14.1 Creating or Modifying a Program (Program Edit Mode).............................................................. 3-8
3.3.14.1.1 Modifying Programmed Time Interval..................................................................................... 3-9
3.3.14.2 Running a Program ..................................................................................................................... 3-9
3.3.14.3 Stepping Through a Program...................................................................................................... 3-9
3.3.14.4 Cycling a Program....................................................................................................................... 3-9
3.3.14.5 Running a Program Once ........................................................................................................... 3-9
3.3.14.6 Stopping a Program .................................................................................................................... 3-11
3.3.14.7 Stopping a Running Program...................................................................................................... 3-11
3.3.14.8 Sample Program ......................................................................................................................... 3-11
3.3.15 Calibration......................................................................................................................................... 3-11
3.4 Remote Mode Programming................................................................................................................... 3-11
3.4.1 DCL Control ...................................................................................................................................... 3-12
3.5 IEEE 488 (GPIB) Bus Operation............................................................................................................. 3-12
3.5.1 IEEE 488 (GPIB) Bus Protocol ......................................................................................................... 3-12
3.5.2 Changing the GPIB Address............................................................................................................. 3-12
3.5.3 ABC VISA Instrument driver ............................................................................................................. 3-14
3.6 RS232-C Operation ................................................................................................................................ 3-14
3.6.1 Setting RS 232 Baud Rate................................................................................................................ 3-15
3.6.2 Serial Interface.................................................................................................................................. 3-15
3.6.3 RS 232 Implementation .................................................................................................................... 3-15
3.6.3.1 Echo Mode .................................................................................................................................. 3-16
3.6.3.2 Prompt Method............................................................................................................................ 3-16
3.6.3.3 XON XOFF Method..................................................................................................................... 3-17
3.6.4 Isolating RS 232 Communication Problems ..................................................................................... 3-17
3.7 SCPI Programming................................................................................................................................. 3-17
3.7.1 SCPI Messages ................................................................................................................................ 3-18
3.7.2 Common Commands/Queries .......................................................................................................... 3-18
3.7.3 SCPI Subsystem Command/Query Structure................................................................................... 3-18
3.7.3.1 ABORt Subsystem ...................................................................................................................... 3-18
3.7.3.2 DISPlay Subsystem .................................................................................................................... 3-18
3.7.3.3 INITiate Subsystem..................................................................................................................... 3-18
3.7.3.4 LIST Subsystem.......................................................................................................................... 3-18
3.7.3.5 MEASure Subsystem .................................................................................................................. 3-18
3.7.3.6 OUTPut Subsystem .................................................................................................................... 3-19
3.7.3.7 Protection Subsystem ................................................................................................................. 3-19
3.7.3.8 STATus Subsystem .................................................................................................................... 3-19
3.7.3.9 TRIGger subsystem .................................................................................................................... 3-19
3.7.3.10 [SOURce:]VOLTage and [SOURce:]CURRent Subsystems ...................................................... 3-19
3.7.3.11 CALibrate Subsystem ................................................................................................................. 3-19
3.7.3.12 Instrument Subsystem ................................................................................................................ 3-19
3.7.3.13 System Subsystem ..................................................................................................................... 3-20
3.7.4 Program Message Structure ............................................................................................................. 3-20
3.7.4.1 Keyword ...................................................................................................................................... 3-20
3.7.4.2 Keyword Separator ..................................................................................................................... 3-22
3.7.4.3 Query Indicator............................................................................................................................ 3-22
3.7.4.4 Data............................................................................................................................................. 3-23
3.7.4.5 Data Separator............................................................................................................................ 3-23
3.7.4.6 Message Unit Separator ............................................................................................................. 3-23
3.7.4.7 Root Specifier.............................................................................................................................. 3-23
3.7.4.8 Message Terminator ................................................................................................................... 3-23
3.7.5 Understanding The Command Structure .......................................................................................... 3-23
3.7.6 Program Message Syntax Summary ................................................................................................ 3-24
3.7.7 SCPI Program Examples .................................................................................................................. 3-25
3.8 Operator Maintenance ............................................................................................................................ 3-25

ABC 040104 iii
TABLE OF CONTENTS
SECTION PAGE
SECTION 4 - CALIBRATION
4.1 General.................................................................................................................................................... 4-1
4.2 Equipment Required................................................................................................................................ 4-1
4.3 Calibration Procedures............................................................................................................................ 4-1
4.3.1 Voltage Calibration ............................................................................................................................ 4-2
4.3.2 Current Calibration............................................................................................................................. 4-2
4.4 Changing the Calibration Password ........................................................................................................ 4-3
4.5 Restoring Previous Calibration Values.................................................................................................... 4-4
4.6 Restoring Factory Calibration Values...................................................................................................... 4-4
4.7 Setting Factory Calibration Values .......................................................................................................... 4-4
4.8 Calibration Storage.................................................................................................................................. 4-4
APPENDIX A - IEEE 488.2 COMMAND/QUERY DEFINITIONS
A.2 *CLS — Clear Status Command .......................................................................................................... A-1
A.3 *ESE — Standard Event Status Enable Command ............................................................................... A-1
A.4 *ESE? — Standard Event Status Enable Query .................................................................................... A-2
A.5 *ESR? — Event Status Register Query ................................................................................................ A-2
A.6 *IDN? — Identification Query ................................................................................................................. A-2
A.7 *OPC — Operation Complete Command............................................................................................... A-2
A.8 *OPC? — Operation Complete Query.................................................................................................... A-3
A.9 *OPT? — Options Query........................................................................................................................ A-3
A.10 *RCL — Recall Command...................................................................................................................... A-3
A.11 *RST — Reset Command ...................................................................................................................... A-4
A.12 * SAV — Save Command ..................................................................................................................... A-5
A.13 *SRE — Service Request Enable Command......................................................................................... A-5
A.14 *SRE? — Service Request Enable Query.............................................................................................. A-5
A.15 *STB? — Status Byte Register Query.................................................................................................... A-5
A.16 *TRG — Trigger Command.................................................................................................................... A-6
A.17 *TST? — Self Test Query....................................................................................................................... A-6
APPENDIX B - SCPI COMMAND/QUERY DEFINITIONS
B.1 Introduction............................................................................................................................................. B-1
B.2 ABORt Command................................................................................................................................... B-2
B.3 CALibrate:CURRent:LEVel Command................................................................................................... B-3
B.4 CALibrate:CURRent[:DATA] Command................................................................................................. B-3
B.5 CALibrate:PASSword Command ........................................................................................................... B-4
B.6 CALibrate:SAVE Command ................................................................................................................... B-4
B.7 CALibrate:STATus Command................................................................................................................ B-4
B.8 CALibrate:STATus? Query..................................................................................................................... B-4
B.9 CALibrate:VOLTage:LEVel Command................................................................................................... B-4
B.10 CALibrate:VOLTage[:DATA] Command................................................................................................. B-4
B.11 CALibrate:ZERO Command................................................................................................................... B-5
B.12 DISPlay:CONTrast Command................................................................................................................ B-5
B.13 DISPlay:CONTrast? Query .................................................................................................................... B-5
B.14 DISPlay:MODE Command ..................................................................................................................... B-5
B.15 DISPlay:MODE? Query.......................................................................................................................... B-6
B.16 DISPlay:TEXT Command....................................................................................................................... B-6
B.17 DISPlay:TEXT? Query ........................................................................................................................... B-6
B.18 INITiate[:IMMediate] Command ............................................................................................................. B-6
B.19 INITiate:CONTinuous Command ........................................................................................................... B-6
B.20 INITiate:CONTinuous Query .................................................................................................................. B-6
B.21 INSTrument:STATe Command .............................................................................................................. B-6
B.22 LIST:CURRent Command...................................................................................................................... B-7
B.23 [SOUR:]LIST:CURRent? Query ............................................................................................................. B-7

iv ABC 040104
TABLE OF CONTENTS
SECTION PAGE
B.24 [SOUR:]LIST:CURRent:PROTect Command ......................................................................................... B-7
B.25 [SOUR:]LIST:CURRent:PROTect? Query.............................................................................................. B-8
B.26 [SOUR:]LIST:DWELl Command ............................................................................................................. B-8
B.27 [SOUR:]LIST:DWELl? Query.................................................................................................................. B-8
B.28 [SOUR:]LIST:INDex Command .............................................................................................................. B-8
B.29 [SOUR:]LIST:INDex? Query ................................................................................................................... B-8
B.30 [SOUR:]LIST:SEQuence:NEXT Command ............................................................................................ B-8
B.31 [SOUR:]LIST:SEQuence:NEXT? Query ................................................................................................. B-8
B.32 [SOUR:]LIST:SEQuence:STARt Command ........................................................................................... B-9
B.33 [SOUR:]LIST:SEQuence:STARt? Query ................................................................................................ B-9
B.34 [SOUR:]LIST:VOLTage Command......................................................................................................... B-9
B.35 [SOUR:]LIST:VOLTage? Query.............................................................................................................. B-9
B.36 [SOUR:]LIST:VOLTage:PROTect Command ......................................................................................... B-9
B.37 [SOUR:]LIST:VOLTage:PROTect Query................................................................................................ B-9
B.38 MEASure[:SCALar]:CURRent[:DC]? Query ........................................................................................... B-10
B.39 MEASure[:VOLTage][:SCALar][:DC]? Query ......................................................................................... B-10
B.40 OUTPut[:STATe] Command ................................................................................................................... B-10
B.41 OUTPut[:STATe] Query.......................................................................................................................... B-10
B.42 OUTPut:PROTection:DELay Command................................................................................................. B-10
B.43 OUTPut:PROTection:DELay Query........................................................................................................ B-10
B.44 PROGram:SELect:STATe Command..................................................................................................... B-10
B.45 PROGram:SELect:STATe? Query ......................................................................................................... B-11
B.46 READ[:SCALar]:CURRent[:DC]? Query................................................................................................. B-11
B.47 READ[:VOLTage][:SCALar][:DC]? Query............................................................................................... B-11
B.48 [SOURce:]CURRent[:LEVel][:IMMediate][:AMPlitude] Command.......................................................... B-11
B.49 [SOURce:]CURRent[:LEVel][:IMMediate][:AMPlitude] Query................................................................. B-11
B.50 [SOURce:]CURRent:[:LEVel]TRIGgered[:AMPlitude] Command........................................................... B-11
B.51 [SOURce:]CURRent:[:LEVel]TRIGgered[:AMPlitude]? Query................................................................ B-12
B.52 [SOURce:]CURRent:PROTection[:LEVel] Command ............................................................................ B-12
B.53 [SOURce:]CURRent:PROTection[:LEVel]? Query ................................................................................. B-13
B.54 [SOURce:]CURRent:PROTection:CLEar Command.............................................................................. B-13
B.55 [SOURce:]CURRent:PROTection:TRIPped? Query............................................................................... B-13
B.56 [SOURce:]CURRent:LIMit:HIGH Command........................................................................................... B-13
B.57 [SOURce:]CURRent:LIMit:HIGH? Query................................................................................................ B-13
B.58 [SOURce:]VOLTage[:LEVel][:IMMediate][:AMPlitude] Command.......................................................... B-13
B.59 [SOURce:]VOLTage[:LEVel][:IMMediate][:AMPlitude]? Query............................................................... B-14
B.60 [SOURce:]VOLTage:[:LEVel]TRIGgered[:AMPlitude] Command........................................................... B-14
B.61 [SOURce:]VOLTage:[:LEVel]TRIGgered[:AMPlitude]? Query................................................................ B-14
B.62 [SOURce:]VOLTage:LIMit:HIGH Command........................................................................................... B-14
B.63 [SOURce:]VOLTage:LIMit:HIGH? Query................................................................................................ B-14
B.64 [SOURce:]VOLTage:PROTection[:LEVel] Command ............................................................................ B-14
B.65 [SOURce:]VOLTage:PROTection[:LEVel]? Query ................................................................................. B-15
B.66 [SOURce:]VOLTage:PROTection:CLEar Command.............................................................................. B-15
B.67 [SOURce:]VOLTage:PROTection:TRIPped? Query............................................................................... B-16
B.68 [SOURce:]FUNCtion:MODE? Query ...................................................................................................... B-16
B.69 STATus:OPERation:CONDition Query................................................................................................... B-16
B.70 STATus:OPEReration:ENABle Command ............................................................................................. B-16
B.71 STATus:OPEReration:ENABle? Query .................................................................................................. B-16
B.72 STATus:OPERation[:EVENt] Query ....................................................................................................... B-17
B.73 STATus:PRESet Command ................................................................................................................... B-17
B.74 STATus:QUEStionable[:EVENt]? Query ................................................................................................ B-18
B.75 STATus:QUEStionable:CONDition? Query ............................................................................................ B-18
B.76 STATus:QUEStionable:ENABle Command............................................................................................ B-18
B.77 STATus:QUEStionable:ENABle? Query................................................................................................. B-18
B.78 SYSTem:COMMunication:GPIB:ADDRess Command........................................................................... B-18
B.79 SYSTem:COMMunication:GPIB:ADDRess? Query ............................................................................... B-19
B.80 SYSTem:COMMunication:SERial:BAUDrate Command........................................................................ B-19
B.81 SYSTem:COMMunication:SERial:BAUD? Query................................................................................... B-19

ABC 040104 v
TABLE OF CONTENTS
SECTION PAGE
B.82 SYSTem:COMMunication:SERial:ECHO Command ............................................................................. B-19
B.83 SYSTem:COMMunication:SERial:ECHO? Query .................................................................................. B-19
B.84 SYSTem:COMMunication:SERial:PACE Command.............................................................................. B-19
B.85 SYSTem:COMMunication:SERial:PACE? Query................................................................................... B-19
B.86 SYSTem:COMMunication:SERial:PROMpt Command.......................................................................... B-19
B.87 SYSTem:COMMunication:SERial:PROMpt? Query............................................................................... B-20
B.88 SYSTem:ERRor[:NEXT]? Query............................................................................................................ B-20
B.89 SYSTem:ERRor:CODE? Query ............................................................................................................. B-20
B.90 SYSTem:ERRor:CODE:ALL? Query...................................................................................................... B-20
B.91 SYSTem:KLOCk Command................................................................................................................... B-20
B.92 SYSTem:KLOCk? Query........................................................................................................................ B-20
B.93 SYSTem:LANGuage? Query ................................................................................................................. B-22
B.94 SYSTem:LANGuage COMMAND .......................................................................................................... B-22
B.95 SYSTem:PASSword:CENable Command.............................................................................................. B-22
B.96 SYSTem:PASSword:CDISable Command............................................................................................. B-22
B.97 SYSTem:PASSword:STATe? Query...................................................................................................... B-22
B.98 SYSTem:SECurity:IMMediate Command............................................................................................... B-22
B.99 SYSTem:SET Command ....................................................................................................................... B-23
B.100 SYSTem:VERSion Query....................................................................................................................... B-23
B.101 TRIGger:SOURce Command................................................................................................................. B-23

LIST OF FIGURES
FIGURE TITLE PAGE
vi ABC 040104
1-1 ABC Series Power Supply........................................................................................................................... viii
1-1 ABC Series Power Supply, Mechanical Outline Drawing........................................................................... 1-4
1-2 ABC Power Supply and RA 71 Rack Adapter, Outline Drawing ................................................................ 1-5
1-3 Two ABC Power SUpplies and RA 72 Rack Adapter, Outline Drawing ..................................................... 1-6
1-4 Ripple and Spike Measurement Cables..................................................................................................... 1-9
2-1 ABC Series Front Panel ............................................................................................................................. 2-1
2-2 ABC Series Rear Panel.............................................................................................................................. 2-1
2-3 LCD Power On Defaults ............................................................................................................................. 2-4
2-4 Grounded Load Connections, Local Sensing............................................................................................. 2-7
2-5 Isolated Load Connections, Local Sensing ................................................................................................ 2-7
2-6 Grounded Load Connections, Remote Sensing......................................................................................... 2-8
2-7 Isolated Load Connections, Remote Sensing ............................................................................................ 2-8
3-1 LCD Power On Defaults ............................................................................................................................. 3-4
3-2 RS 232 Implementation.............................................................................................................................. 3-16
3-3 Tree Diagram of SCPI Commands Used with ABC Power Supply ............................................................ 3-21
3-4 Message Structure ..................................................................................................................................... 3-22
3-5 Typical Example Of ABC Power Supply Program Using SCPI Commands............................................... 3-25
A-1 GPIB Commands ....................................................................................................................................... A-4
B-1 Programming the Output ............................................................................................................................ B-2
B-2 Using Calibration Commands and Queries ................................................................................................ B-3
B-3 Using Display Commands .......................................................................................................................... B-5
B-4 Using LIST Commands and Queries.......................................................................................................... B-7
B-5 Programming Current................................................................................................................................. B-12
B-6 Programming Voltage................................................................................................................................. B-15
B-7 Using Status Commands and Queries ....................................................................................................... B-17
B-8 Using System Commands and Queries ..................................................................................................... B-23

ABC 04104 vii
LIST OF TABLES
TABLE TITLE PAGE
1-1 Model Parameters .......................................................................................................................................1-1
1-2 Maximum Overvoltage and Overcurrent Settings .......................................................................................1-1
1-3 ABC Specifications .....................................................................................................................................1-2
1-4 Accessories .................................................................................................................................................1-8
1-5 Safety Symbols ...........................................................................................................................................1-9
2-1 Input/Output Pin Assignments for IEEE 488 (GPIB) Port ...........................................................................2-2
2-2 Trigger Port Pin Assignments .....................................................................................................................2-2
2-3 RS232C PORT Input/Output Pin Assignments ...........................................................................................2-3
3-1 Key Functions .............................................................................................................................................3-2
3-2 Memory Location Worksheet ......................................................................................................................3-10
3-3 Sample Program (Model ABC 10-10DM) ....................................................................................................3-11
3-4 IEEE 488 (GPIB) Bus Interface Functions ..................................................................................................3-13
3-5 IEEE 488 (GPIB) Bus Command Mode Messages .....................................................................................3-13
3-6 IEEE 488 (GPIB) Bus Data Mode Messages ..............................................................................................3-14
3-7 Rules Governing Shortform Keywords ........................................................................................................3-22
4-1 Factory Default Calibration Passwords .......................................................................................................4-3
4-2 Calibration Storage .....................................................................................................................................4-5
A-1 IEEE 488.2 Command/query Index ........................................................................................................... A-1
A-2 Standard Event Status Enable Register and Standard Event Status Register Bits ................................... A-1
A-3 Service Request Enable and Status Byte Register Bits ............................................................................. A-5
B-1 SCPI Subsystem Command/query Index .................................................................................................. B-1
B-2 Operation Condition Register, Operation Enable Register,
and Operation Event Register Bits .......................................................................................................... B-16
B-3 Questionable Event Register, Questionable Condition Register
and Questionable Condition Enable Register Bits .................................................................................. B-18
B-4 Error Messages .......................................................................................................................................... B-21
B-5 Master Passwords ..................................................................................................................................... B-22

viii ABC 040104
FIGURE 1-1. ABC SERIES POWER SUPPLY

ABCOPR040104 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). Although ABC is a stand-alone, bench top design, rack
mounting can also be accommodated by rack adapters available for standard 19-inch wide
racks (see Figures 1-2 and 1-3). Load connections may be made either at front panel terminals,
or at a barrier terminal strip located at the rear.
ABC Series Power Supplies employ high frequency switch-mode conversion and power factor cor-
rection. ABC Power Supplies are full-range, automatic-crossover voltage/current stabilizers with a
full rectangular output characteristic. The ABC is controlled digitally over the entire voltage/current
range. Voltage and current are displayed on a two-line alphanumeric LCD display. Control of the
ABC can either be local (via the front panel keypad) or remote (via either the IEEE 488.2 GPIB
communication bus or RS 232 serial bus) using SCPI commands.
1.3 SPECIFICATIONS
Table 1-1 below indicates parameters that vary for different ABC models; Table 1-2 lists the
Overcurrent and Overvoltage Range for each model. Table 1-3 lists general specifications that
apply to all ABC models.
TABLE 1-1. MODEL PARAMETERS
MODEL
NUMBER
d-c OUTPUT RIPPLE AND NOISE (mv) (See PAR. 1.10) EFFICIENCY
RANGE POWER 2x SOURCE
FREQUENCY
SWITCHING
FREQUENCY SPIKE (50MHz) 100% LOAD
85-264V a-c
VOLTS AMPS WATTS TYP MAX TYP MAX TYP MAX % MIN
ABC10-10DM0-100-101002425320 65%
ABC15-7DM0-150-71053738420 66%
ABC 25-4DM 0-25 0-4 100 5 10 5 10 5 20 66%
ABC 36-3DM 0-36 0-3 108 7 15 7 15 7 20 67%
ABC 60-2DM 0-60 0-2 120 12 24 12 24 12 24 68%
ABC 125-1DM 0-125 0-1 125 25 50 25 50 25 50 70%
TABLE 1-2. MAXIMUM OVERVOLTAGE AND OVERCURRENT SETTINGS
MODEL NUMBER ABC
10-10DM
ABC
15-7DM
ABC
25-4DM
ABC
36-3DM
ABC
60-2DM
ABC
125-1DM
MAXIMUM OVERVOLTAGE SETTING 11V 17 27 39 65 137
MAXIMUM OVERCURRENT SETTING 11 7.7 4.4 3.3 2.2 1.1

1-2 ABCOPR040104
TABLE 1-3. ABC SPECIFICATIONS
SPECIFICATION RATING/DESCRIPTION CONDITION
INPUT CHARACTERISTICS
a-c Voltage nominal 100/120/220/240V a-c Single phase
range 85-264V a-c Wide range
Frequency nominal 50-60Hz >63Hz Input leakage current
exceeds specifications
range 47-63Hz (400Hz)
Current 85V a-c 1.8A
Maximum at
100W output
120V a-c 1.3A
240V a-c 0.65A
264V a-c 0.60A
Initial turn-on surge 5A peak for <150 usec 85-264V a-c, 0-100% load
Power Factor (min) 120V 0.99 100% load
240V 0.97
EMC immunity to: Radiated RF EN 61000-4-3 level 3
Magnetic Field EN 61000-4-8 level 4
Electrostatic discharge EN 61000-4-2 level 2: contact,
level 3: 8KV air discharge
Conducted RF EN 61000-4-6 level 3
Electrical fast transient EN 61000-4-4 level 3
Surges EN 61000-4-5 level 4
EMC Emissions Conducted EN 55022 Class B 0.15-30 MHz
Radiated EN 55022 Class B 30-1000 MHz
Harmonics Conducted EN 61000-3-2 0-2 KHz
Leakage current 120V a-c <0.25mA Source frequency in
47-63Hz range
240V a-c <0.5mA
Circuit type PFC Flyback converter
Output Forward converter
Switching Frequency 100KHz
OUTPUT CHARACTERISTICS
Type of Stabilizer Automatic crossover Voltage/Current
Adjustment range 0 to 100% of rating Voltage/Current
Source effect Voltage <0.01% EOmax Nominal ±15%
of input voltage
Current <0.01% IOmax
Load effect Voltage <0.01% EOmax 0 to 100% load change
Current <0.02% IOmax
Temperature effect Voltage <0.01% EOmax Per degree C
(0 to 50° C)
Current <0.01% IOmax
Time effect Voltage <0.01% EOmax 0.5-8.5 hours
Current <0.01% IOmax
Error sense 0.5V per wire Voltage allowance
Isolation voltage 500V d-c or peak Output to ground

ABCOPR040104 1-3
OUTPUT CHARACTERISTICS (Continued)
Programming time 2ms max 0-100%
Programming
accuracy
Voltage <0.025% EOmax
Current 0.1% IOmax ABC 10-10DM
ABC 15-7DM
0.05% IOmax ABC 25-4DM
0.025% IOmax
ABC 36-3DM
ABC 60-2DM
ABC 125-1DM
Readback/Display
accuracy
Voltage <0.05% EOmax
Current <0.1% IOmax
Transient recovery to
load change
Excursion <5% EOmax 50-100% load change
return to 1% EOmax
Recovery <200 usec
Overshoot None Turn ON/OFF
Data entry Local 24 keypads Front panel
Remote GPIB SCPI commands
GENERAL (ENVIRONMENTAL) CHARACTERISTICS
Temperature Operating 0° to +50° C No derating, 100% POmax
Operating +50° to +70° C Linear derating to 40% POmax
Storage -20° to +70° C
Humidity 0 to 95% RH Non condensing
operating & storage
Shock 20g, 11msec ±50%
half sine
3-axes
3 shocks each axis
Vibration 5-10Hz 10mm
double amplitude
Non operating
1 hour each axis
Altitude Sea level to 10,000 feet
Cooling Natural convection
PHYSICAL CHARACTERISTICS
Dimensions English 7.9” x 4.9” x 14” ±1/32” See Outline Drawing, Figure 1-1.
For rack mounting see
Figures 1-2 and 1-3.
Metric 200.8 x 124.6 x 355.6 mm
±0.8 mm
Weight English 11 lbs. Unpacked
Metric 5 Kg
A-C input
connections
Front Panel ON/OFF switch
Rear Detachable IEC 320 type
connector 3 wire fused
Output
connections
Front 5 binding posts ±Output, ±Sense, Ground
Rear 5 terminal barrier strips
Remote control
programming
One standard
GPIB connector
Rear,
SCPI & IEEE 488.2 Commands
Digital display
front panel
Voltage, current, mode,
status, menu, program,
etc.
2 x 16 character alphanumeric
LCD with LED backlight
TABLE 1-3. ABC SPECIFICATIONS (Continued)
SPECIFICATION RATING/DESCRIPTION CONDITION

1-4 ABCOPR040104
FIGURE 1-1. ABC SERIES POWER SUPPLY, MECHANICAL OUTLINE DRAWING

ABCOPR040104 1-5
FIGURE 1-2. ABC POWER SUPPLY AND RA 71 RACK ADAPTER, OUTLINE DRAWING

1-6 ABCOPR040104
FIGURE 1-3. TWO ABC POWER SUPPLIES AND RA 72 RACK ADAPTER, OUTLINE DRAWING