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ABC 040104

3-23

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., VOLT 15;MEAS:VOLT? and CURR 12; CURR:TRIG 12.5).

3.7.4.7

ROOT SPECIFIER

The root specifier is a colon (:) that precedes the first keyword of a program message. This
places the parser at the root (top left, Figure 3-3) of the command tree. Note the difference
between using the colon as a keyword separator and a root specifier in the following examples:

VOLT:LEV:IMM 16 Both colons are keyword separators.

:CURR:LEV:IMM 4 The first colon is the root specifier, the other two are keyword separators.

VOLT:LEV 6;:CURR:LEV 15 The second colon is the root specifier, the first and third are key-
word separators

:INIT ON;:TRIG;:MEAS:CURR?;VOLT? The first three colons are root specifiers.

3.7.4.8

MESSAGE TERMINATOR

The message terminator defines the end of a message. One message terminator is permitted:

• new line (<NL>), ASCII 10 (decimal) or 0A (hex)

NOTE: Kepco power supplies

require

a message terminator at the end of each program mes-

sage. The examples shown in this manual assume a message terminator will be added
at the end of each message. Where a message terminator is shown it is represented
as <NL> regardless of the actual terminator character.

3.7.5

UNDERSTANDING THE COMMAND STRUCTURE

Understanding the command structure requires an understanding of the subsystem command
tree illustrated in Figure 3-3. The “root” is located at the top left corner of the diagram. The
parser goes to the root if:

• a message terminator is recognized by the parser
• a root specifier is recognized by the parser

Optional

keywords

are enclosed in brackets [ ] for identification; optional keywords can be omit-

ted and the power supply will respond as if they were included in the message. The root level
keyword [SOURce] is an optional keyword. Starting at the root, there are various branches or

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Содержание ABC 10-10DM

Страница 1: ...ice in New York 718 461 7000 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...

Страница 2: ......

Страница 3: ...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 disp...

Страница 4: ...t 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 P...

Страница 5: ...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 Ad...

Страница 6: ......

Страница 7: ...y 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...

Страница 8: ...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 Quer...

Страница 9: ...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...

Страница 10: ...t 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...

Страница 11: ...n 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 SY...

Страница 12: ...ad 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...

Страница 13: ...88 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...

Страница 14: ...viii ABC 040104 FIGURE 1 1 ABC SERIES POWER SUPPLY...

Страница 15: ...d 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 v...

Страница 16: ...al 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 L...

Страница 17: ...ting 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...

Страница 18: ...1 4 ABCOPR040104 FIGURE 1 1 ABC SERIES POWER SUPPLY MECHANICAL OUTLINE DRAWING...

Страница 19: ...ABCOPR040104 1 5 FIGURE 1 2 ABC POWER SUPPLY AND RA 71 RACK ADAPTER OUTLINE DRAWING...

Страница 20: ...1 6 ABCOPR040104 FIGURE 1 3 TWO ABC POWER SUPPLIES AND RA 72 RACK ADAPTER OUTLINE DRAWING...

Страница 21: ...fer to Section 4 1 6 2 OVERVOLTAGE OVERCURRENT PROTECTION Overvoltage and Overcurrent protection values can be individually programmed The maximum values are listed in Table 1 2 Refer to PAR 3 3 9 1 6...

Страница 22: ...Power Supply are listed in Table 1 4 TABLE 1 4 ACCESSORIES ITEM FUNCTION PART NUMBER Rack Adapter Accepts a single ABC power supply for installation in a 19 inch wide rack see Figure 1 2 RA 71 Rack Ad...

Страница 23: ...licable 1 10 RIPPLE NOISE MEASUREMENT To accurately verify that ABC Power Supply ripple and noise parameters are within the specifi cation limits listed in Table 1 1 specialized test cables are requir...

Страница 24: ......

Страница 25: ...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 transpo...

Страница 26: ...I O Line 15 DI07 I O Line 16 DI08 I O Line 17 REN Remote Enable 18 GND Ground signal common 19 GND Ground signal common 20 GND Ground signal common 21 GND Ground signal common 22 GND Ground signal com...

Страница 27: ...nctions of operating controls indicators and keypad keys respectively 1 With POWER switch set to off position connect the power supply to source power 2 With no load connected set POWER switch to the...

Страница 28: ...eypad and LCD display For rack mounting refer to Figures 1 2 and 1 3 2 7 WIRING INSTRUCTIONS Interconnections between an a c power source and a power supply and between the power supply and its load a...

Страница 29: ...ower supply for the d c ground point both sides should be tried and preference given to the ground point producing the least noise For single isolated loads the d c ground point is often best located...

Страница 30: ...h the error sensing connection to the load compensates for the d c voltage drop in the power leads it cannot compensate for the undesirable output effects of the power lead inductance These lead imped...

Страница 31: ...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 GROUNDED LOAD CONNECTIONS...

Страница 32: ...LOAD CONNECTIONS REMOTE SENSING FIGURE 2 7 ISOLATED LOAD CONNECTIONS REMOTE SENSING 2 8 OPERATING CONFIGURATION The operating configuration can be determined by pressing MENU with the unit in command...

Страница 33: ...ANEL KEYPAD AND LCD SEE FIGURE 2 1 The front panel keypad is comprised of 24 key 13 dedicated to command functions 5 dedicated to data functions and 6 keys that have both command and data functions Wh...

Страница 34: ...ated by a blinking equal sign NOTE Keys with dual functions are labeled with both a command and a number The com mand label is referred to when the unit is in command entry status the number is referr...

Страница 35: ...ons appear on LCD 4 3 Data Entry Press to enter number 9 3 3 1 2 STORE Command Entry Press to store present values of output voltage and current and overvoltage and overcurrent protection Data entry r...

Страница 36: ...ecrease output voltage by increment equal to voltage resolution 0 025 of EOmax In CC constant current press to decrease output current by increment equal to current resolution 0 025 of IOmax In EDIT P...

Страница 37: ...icates if the speaker is on or off the factory default setting is speaker on Enter 1 to enable the speaker or 0 to disable the speaker Press ENTER or CLEAR to exit menu 3 3 6 ENABLING DISABLING DC OUT...

Страница 38: ...mmed limit has been reached If the value entered exceeds the maximum setting the LCD bottom line flashes VsetMAX nn V or IsetMAX n n A where n n is the maximum setting see PAR 3 3 11 The unit returns...

Страница 39: ...er the out put is changed With the power supply in command entry status press MENU until LCD displays Prot Delay Count nn where nn is the active setting A count of 0 means no delay a count of 255 high...

Страница 40: ...OTE When programming sequential voltage levels it is important to set the Overvoltage to accommodate the highest voltage of the sequence Otherwise when going from higher to lower voltage levels the ov...

Страница 41: ...program The LCD top line shows LOC to indicate local mode aa bb where aa is the memory location just executed bb is the NEXT STEP location and shows CV constant voltage or CC constant current to indi...

Страница 42: ...I SET Current A V SET Voltage V OCset Overcurrent Protection A OV set Overvoltage Protection V TIMEval 0 to 300 Sec Sec NEXT STEP Next location to execute 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18...

Страница 43: ...ect when the program was stopped 3 3 14 8 SAMPLE PROGRAM Table 3 3 shows a sample program designed to cycle continuously if the NEXT STEP value for location 3 is set to 00 the program will run once an...

Страница 44: ...EEE 488 GPIB BUS OPERATION This section includes a discussion of GPIB bus protocols PAR 3 5 1 instructions for changing the GPIB address PAR 3 5 2 and a discussion of the VISA Virtual Instrumentation...

Страница 45: ...all front panel keys are disabled except LOCAL LOCAL key can be disabled using keypad lockout command see Appendix B PAR B 91 so that only the controller or a power on condition can restore Local mod...

Страница 46: ...ttp www natinst com has the driver for their cards available on the internet at a file transfer site ftp ftp natinst com find the folder for support and VISA drivers 3 6 RS232 C OPERATION The ABC may...

Страница 47: ...the input buffer to be parsed by the ABC and The character turns on the echo mode upon receipt of the character The character turns off the echo mode The message echo off or echo on will be displayed...

Страница 48: ...ters are sent via the serial port of the command originator The control character BS is echoed as BS Space BS Only the first control character is returned in response to either a CR LF or LF CR charac...

Страница 49: ...power supply RS 232 port to the computer remove the Loop Back test connector from the power supply RS 232 port and connect the cable in its place With the DB9 adapter installed on the opposite end of...

Страница 50: ...e branches The following paragraphs introduce the subsystems subsystem commands are defined and explained in Appendix B 3 7 3 1 ABORT SUBSYSTEM This subsystem allows pending trigger levels to be cance...

Страница 51: ...d If the password has been forgotten call the factory and a secret password which has been assigned to your power supply will be provided During the calibration new calibration data is computed which...

Страница 52: ...he message structure for multiple messages defined in the fol lowing paragraphs is to send each command as a separate line In this case each command must use the full syntax shown in Appendix B 3 7 4...

Страница 53: ...ubsystem SYSTem COMMunicate SERial BAUD 2400 4800 9600 19200 ECHO ENABLE DISABLE PACE ENABLE DISABLE PROM ENABLE DISABLE GPIB ADDRess ERRor NEXT CODE NEXT ALL PASSword CENAble code STATe CDISenable co...

Страница 54: ...query indicator follows the last keyword e g VOLT and MEAS CURR TABLE 3 7 RULES GOVERNING SHORTFORM KEYWORDS IF NUMBER OF LETTERS IN LONGFORM KEYWORD IS AND FOURTH LETTER IS A VOWEL THEN SHORT FORM C...

Страница 55: ...n is the root specifier the first and third are key word separators INIT ON TRIG MEAS CURR VOLT The first three colons are root specifiers 3 7 4 8 MESSAGE TERMINATOR The message terminator defines the...

Страница 56: ...consist of a root keyword and in some cases one or more message units separated by a colon followed by a message terminator Several message units of a program message may be separated by a semicolon w...

Страница 57: ...dust and other contaminants 2 Once a year clean the front panel as follows Disconnect the unit from mains power Using a damp lint free cloth wipe the front panel to remove any accumulated dirt Reconn...

Страница 58: ......

Страница 59: ...BC 10 10DM 0 1 Ohm 0 04 15A 50W minimum 100W recommended ABC 15 7DM 0 1 Ohm 0 04 15A 50W minimum 100W recommended ABC 25 4DM 0 25 Ohm 0 04 15A 50W minimum 100W recommended ABC 36 3DM 0 25 Ohm 0 04 15A...

Страница 60: ...sed for fine adjust ments If necessary use the 1 decrease and 3 increase keys for coarse adjustment then use the or keys 3 LCD will flash Vout F S adj WAIT then Vout F S adj Monitor DVM and use or key...

Страница 61: ...t password is required for to enter calibration mode The factory default passwords are listed in Table 4 1 1 If the unit is not in command entry status press CLEAR or RESET to put the unit in com mand...

Страница 62: ...lues are restored 4 7 SETTING FACTORY CALIBRATION VALUES After a unit has been repaired is operating correctly and has been calibrated the new calibra tion values should be saved as the new factory ca...

Страница 63: ...are no longer available Table 4 2 illustrates calibration storage and the use of the CAL COPY command TABLE 4 2 CALIBRATION STORAGE COMMAND WORKing PRIor OLDest FACTory MASTer FIRst 1 CAL SAVE Cal 1...

Страница 64: ......

Страница 65: ...le number 0 to 255 per Table A 2 Default Value 0 Description This command programs the standard Event Status Enable register bits The contents function as a mask to determine which events of the Event...

Страница 66: ...s the Device error bit 3 Any 4xx type error sets the Query error bit 2 A 6 IDN IDENTIFICATION QUERY IDN Syntax IDN Return value Character string Description Identifies the instrument This query reques...

Страница 67: ...to 40 Description Restores power supply to previously defined levels of output voltage output current overvolt age protection and overcurrent protection This command selects one of the 40 power suppl...

Страница 68: ...t value of memory location 21 to 0 235A LIST VOLT 14 Sets output voltage value of memory location 21 to 14V OPC Allows status bit 0 to be set when pending operations complete VOLT 21 CURR 3 Sets outpu...

Страница 69: ...ause Bit 6 of the Status Byte Register MSS RQS to be set Related Commands SRE STB See exam ple Figure A 1 A 14 SRE SERVICE REQUEST ENABLE QUERY SRE Syntax SRE Response integer value from 0 255 per Tab...

Страница 70: ...Status Operation Condition register If INIT CONT has been issued the trigger subsystem is immediately rearmed for subsequent triggers and the WTG bit is again set to 1 TRG or GET are both addressed co...

Страница 71: ...P B 67 DISP CONT B 12 B 13 SOUR FUNC MODE B 68 DISP MODE B 14 B 15 STAT OPER COND B 69 DISP TEXT B 16 B 17 STAT OPER ENAB B 70 B 71 INIT IMM B 18 STAT OPER EVENT B 72 INIT CONT B 19 B 20 STAT PRES B 7...

Страница 72: ...5V current limit 3A upon receipt of trigger TRG Power supply output returns to 15V current limit 3A VOLT 21 CURR 5E 2 Power supply output programmed to go to 21V current limit 0 05A MEAS VOLT If actua...

Страница 73: ...rent Zero or Current Full Scale calibration are active This command is equivalent to the on the front panel left and right arrow keys for fine adjustment and the 1 and 3 keys for coarse adjustment Rel...

Страница 74: ...er supply to exit Calibrate status Upon entering Cali brate status the current calibration constants are stored in the volatile memory If the state is 0 the non volatile calibration constants are supp...

Страница 75: ...anel LCD The contrast value from 0 1 to 0 9 is stored in the non volatile memory and is retained when the power supply is turned off A contrast value of 0 is best when looking up at the display 1 is b...

Страница 76: ...Commands DISP MODE DISP TEXT RST See example Figure B 3 B 18 INITiate IMMediate COMMAND INIT IMM Syntax Short Form INIT IMM Long Form INITiate IMMediate Description Enables a single trigger If INIT C...

Страница 77: ...ble current range for the power supply model an error message 222 Data out of range is posted in the output queue The current value is stored in non volatile memory and is retained when the power supp...

Страница 78: ...R LIST CURR PROT LIST VOLT LIST VOLT PROT commands or queries The index value the selected memory location is stored in non volatile memory and is retained when the power supply is turned off Related...

Страница 79: ...LIST IND LIST IND LIST VOLT See example Figure B 4 B 35 SOUR LIST VOLTage QUERY LIST VOLT Syntax Short Form LIST VOLT LEV Long Form LIST VOLTage LEVel Return Value exp_value digits with decimal point...

Страница 80: ...s enabled OUTP ON When OUTP OFF is executed the programmed values of voltage and current are saved then voltage and current are programmed to 0 When OUTP ON is executed the power supply output is rest...

Страница 81: ...put current will depend on load conditions If the value exceeds the max imum for the model being programmed error message 222 Data out of range is posted in output queue If value programmed exceeds th...

Страница 82: ...ection mechanism to trigger after the delay established by OUTP PROT DEL command See example Figure B 5 FIGURE B 5 PROGRAMMING CURRENT NOTES 1 The power supply is assumed to be operating in constant v...

Страница 83: ...ower supply output current If the value is out of the acceptable current range for the power supply model error message 222 Data out of range is posted in the output queue If the user tries to set an...

Страница 84: ...value exp_value digits with decimal point and Exponent e g 2 71E 1 for 27 1 Description Sets voltage limit for power supply output If the value is out of the acceptable voltage range for the power sup...

Страница 85: ...urrent rating Overvoltage Protection Tripped is reset so that VOLT PROT TRIP returns 0 Related Commands VOLT PROT VOLT PROT TRIP See example Figure B 6 NOTES 1 The power supply is assumed to be operat...

Страница 86: ...OMMAND STAT OPER ENAB Syntax Short Form STAT OPER ENAB int_value 0 to 1313 1 32 256 1024 Long Form STATus OPERation ENABle int_value 0 to 1313 1 32 256 1024 Description Sets Operation Enable Register...

Страница 87: ...TG bits set STAT QUES ENAB 3 Mask enabled for OV and OC bits 1 2 STAT QUES ENAB Returns 3 1 2 indicating OV and OC bits are enabled STAT PRES Operation Condition and Questionable Condition registers a...

Страница 88: ...dition Enable Register determines which conditions are allowed to set the Questionable Condition Register it is a mask for enabling specific bits in the Questionable Event register that can cause the...

Страница 89: ...F turns off the character echo after the nest line terminator character The RST command has no effect on echo status B 83 SYSTem COMMunication SERial ECHO QUERY SYST COMM SER ECHO Syntax Short Form SY...

Страница 90: ...oduced during parsing of messages and also to errors in the power supply as indi cated in Table B 4 B 90 SYSTem ERRor CODE ALL QUERY SYST ERR CODE ALL Syntax Short Form SYST ERR CODE ALL Long Form SYS...

Страница 91: ...OFF 150 String data error Command Error bit 5 Invalid characters were detected in numeric entry For example E 1 instead of E 1 or 4d3 instead of 4 3 203 Command protected Execution error bit 4 Comman...

Страница 92: ...password enable state if the value matches the current password This command allows other commands such as SAV 41 to operate B 96 SYSTem PASSword CDISable COMMAND SYST PASS CDIS Syntax Short Form SYS...

Страница 93: ...and troubleshooting commands Related Commands SYST PASS CEN the password must be enabled prior to saving the SYST SET configuration using the SAV41 command SAV41 this command saves the configuration e...

Страница 94: ......

Страница 95: ...mpany parts or materials for which replacement is requested shall be returned to the Company for examination with shipping charges prepaid by the Purchaser Final determination as to whether a product...

Страница 96: ...FOLD HERE Please place stamp here KEPCO INC 131 38 SANFORD AVE FLUSHING NY 11352 USA CUT HERE...

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