OPERATOR MANUAL BIT 4882 BIT 4882F DIGITAL INTERFACE CARD KEPCO INC. An ISO 9001 Company. MODEL BIT 4882, BIT 4882F INTERFACE CARD 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.
KEPCO® INSTRUCTION MANUAL CORRECTION KEPCO MODEL BIT 4882 THE POWER SUPPLIER™ SECTION 4, OPERATION, add the following: NOTE: The VISA query function (included in the latest versions of the VISA libraries) is not supported by the BIT 4882. In newer XP and Vista computers a delay is needed to insure the BIT 4882 has time to return the response to the query.
TABLE OF CONTENTS SECTION PAGE SECTION 1 - INTRODUCTION 1.1 1.2 1.3 Scope of Manual ..................................................................................................................................... 1-1 General Description................................................................................................................................. 1-1 Specifications, BIT 4882, BIT 4882-F and BIT 4886 ...............................................................................
TABLE OF CONTENTS SECTION PAGE APPENDIX A - SCPI COMMON COMMAND/QUERY DEFINITIONS A.2 A.3 A.4 A.5 A.6 A.7 A.8 A.9 A.10 A.11 A.12 A.13 A.14 A.15 *CLS — Clear Status Command ............................................................................................................ *ESE — Standard Event Status Enable Command................................................................................ *ESE? — Standard Event Status Enable Query..............................................................
LIST OF FIGURES FIGURE 1-1 2-1 2-2 2-3 2-4 3-1 3-2 4-1 4-2 4-3 A-1 B-1 B-2 B-3 C-1 C-2 C-3 C-4 C-5 C-6 C-7 C-8 TITLE PAGE Remotely Controlled Power Supply Configurations Using Kepco Products.................................................. vi BIT 4882 and BIT 4882-F Switch and Adjustment Locations ..................................................................... 2-2 Installation of Model BIT 4882-f into BOP ............................................................................................
LIST OF TABLES TABLE 1-1 1-2 1-3 2-1 2-2 2-3 3-1 3-2 3-3 4-1 4-2 4-3 4-4 4-5 A-1 A-2 A-3 B-1 B-2 B-3 B-4 C-1 C-2 C-3 TITLE PAGE Kepco BIT 488, BIT 4882, and BIT 4886 Digital Programming Cards ........................................................1-1 Applicability of BIT 4882, 4882-F and BIT 4886 Cards to Specific BOP Models ........................................1-2 Specifications, BIT 4882, BIT 4882-F AND BIT 4886 .................................................................................
vi BIT4882 030507 FIGURE 1-1.
SECTION 1 - INTRODUCTION 1.1 SCOPE OF MANUAL This manual contains instructions for the installation, operation and maintenance of the BIT 4882, BIT 4882-F, and BIT 4886 Interface Cards manufactured by Kepco, Inc., Flushing, NY, U.S.A. References to "Interface Card" refer to both models. 1.2 GENERAL DESCRIPTION The Kepco BIT Card Series were designed as an accessory for the Kepco BOP series bipolar power supplies.
TABLE 1-2. APPLICABILITY OF BIT 4882, 4882-F AND BIT 4886 CARDS TO SPECIFIC BOP MODELS BOP TO BE MODIFIED MODEL REVISION NO. 1 APPLICABLE CARD APPLICABLE CARD REVISION NO.
SECTION 2 - INSTALLATION 2.1 UNPACKING AND INSPECTION The Interface Card has been thoroughly inspected and tested prior to packing and is ready for operation following installation. Unpack, saving original packing material. If any indication of damage is found, file a claim immediately with the responsible transport service. 2.
FIGURE 2-1. BIT 4882 AND BIT 4882-F SWITCH AND ADJUSTMENT LOCATIONS TABLE 2-1.
2.3 INSTALLATION OF INTERFACE CARD INTO THE BOP • Refer to Figure 2-2 to install the BIT 4882-F interface card. • Refer to Figure 2-3 to install the BIT 4882 or BIT 4886 interface card. TABLE 2-2.
NOTE: Step numbers coincide with encircled numbers on Figure 2-2, sheet 2. Step 1. Remove a-c power to BOP by disconnecting line cord. Step 2. Remove BOP cover (see Section 5, Figure 5-1 of your BOP Instruction Manual). Step 3. Remove and discard Rear Cover Plate (PN 128-1434) and associated hardware. Step 4. Remove J204 Connector Assembly (PN 241-0680) from Location #1, save for Step 9. Step 5. Locate Transformer T202 and unplug connector from Location #4 only. Step 6.
FIGURE 2-2. BIT 4882 030507 INSTALLATION OF MODEL BIT 4882-F INTO BOP (SHEET 2 OF 2).
NOTE: Step numbers coincide with encircled numbers on Figure 2-3, sheet 2. Step 1. Remove a-c power to BOP by disconnecting line cord. Step 2. Remove BOP cover (see Section 5, Figure 5-1 of your BOP Instruction Manual). Step 3. Remove and discard Rear Cover Plate (PN 128-1434) and associated hardware. Step 4. Remove J204 Connector Assembly (PN 241-0680) from Location #1, save for Step 9. Step 5. Locate Transformer T202 and unplug connector from Location #4 only. Step 6.
FIGURE 2-3. BIT 4882 030507 INSTALLATION OF MODEL BIT 4882 INTO BOP (SHEET 2 OF 2).
2.4 INPUT/OUTPUT SIGNALS The IEEE 488 port is a 24 pin IEEE 488 connector (Figure 2-4) and conforms mechanically and electrically to the IEEE 488 standard. Refer to Table 2-3 for pin assignments. TABLE 2-3.
SECTION 3 - CALIBRATION NOTE: The calibration procedures below are for the purpose of recalibration and for the case where the BIT card is installed by the user. Unless otherwise noted, syntax is in SCPI. 3.1 EQUIPMENT REQUIRED The following is a listing of equipment required for calibration of the Interface Card installed in a Kepco “BOP” Series Power Supply: A. Precision digital voltmeter (DVM), 5 digit minimum resolution (suggested). B.
FIGURE 3-1. 3.4 BOP POWER SUPPLY, INTERNAL CALIBRATION CONTROL LOCATIONS ADJUSTMENT OF THE OUTPUT VOLTAGE ZERO (R81) 1. Without a load connected to the BOP output, connect a DVM between the FRONT PANEL SENSING TERMINALS of the BOP Power Supply. 2. Turn the BOP Power Supply “ON”, program the BOP Power Supply to ZERO VOLTAGE AND MAXIMUM CURRENT LIMIT. • If using SCPI send VOLT 0;CURR MAX • If using CIIL send FNC DCS:CH1 VOLT 0 with CURL .5 3.
2. MEASURE the output voltage at the sense terminals at the BOP front panel using the DVM. 3. Locate VOLTAGE FULL SCALE control R21 (see Figures 2-1 and 3-1, refer to Table 3-1). 4. Adjust control R21 as needed until DVM reads FULL SCALE VOLTAGE, ±1 millivolt. TABLE 3-1. BOP POWER SUPPLY, INTERNAL CALIBRATION CONTROLS ADJUSTMENT PROCEDURE (PAR.) REFERENCE DESIGNATION CONTROL NAME R19 * VOLTAGE READING ‘MEASURE’d voltage reading adjustment 3.
2. MEASURE the output voltage using programming commands, then check the readback data. • • In SCPI send In CIIL: send MEAS:VOLT? FNC DCS:CH1 GAL F0 INX VOLT FTH VOLT NOTE: For subsequent measurements using CIIL it is only necessary to send INX VOLT and FTH VOLT commands. 3. Locate VOLTAGE READBACK ZERO control R35 (see Figures 2-1 and 3-1, refer to Table 31). 4. Adjust control R35 until the readback value is not 0.0 using MEASURE commands (see step 2) as needed. 5.
3. Turn the BOP “ON” and program the BOP Power Supply to ZERO CURRENT and MAXIMUM VOLTAGE LIMIT. • • If using SCPI send FUNC:MODE CURR;:CURR 0;VOLT MAX If using CIIL send FNC DCS:CH1 CURR 0 with VLTL 20 4. Locate Io COMP AMP ZERO control R83 (see Figure 3-1, refer to Table 3-1). 5. Adjust control R83 for zero, per Table 3-2, OUTPUT CURRENT ZERO. 6. Turn the BOP Power Supply “OFF”. 3.9 ADJUSTMENT OF THE FULL SCALE OUTPUT CURRENT (R22) 1.
5. Adjust control R36 (opposite direction from step 4 above) until the readback value is 0.0 using MEASURE commands (see step 2) as needed. Once a stable value of 0.0 is reached, continue rotating R36 four full (360 °) turns in the same direction. Verify readback current is 0.0 using MEASURE commands (see step 2) as needed. TABLE 3-2.
TABLE 3-3. SUGGESTED SENSE RESISTORS VALUE KEPCO PART NO. MANUFACTURER MANUFACTURER PART NO. 0.01 OHM 115-2997 ISOTEK RUG-Z-R010-0.1 TK10 0.1 OHM 115-2995 ISOTEK RUG-Z-R100-0.1 TK10 1 OHM 115-2996 ISOTEK RUG-Z-1R00-0.1 TK10 NOTE: ALL SENSE RESISTORS MUST BE MOUNTED ON A HEATSINK WITH A MINIMUM SURFACE AREA OF 36 SQUARE INCHES TO MAINTAIN THERMAL STABILITY DURING CALIBRATION. FIGURE 3-2.
3.11 CURRENT READING CALIBRATION (R20) NOTE: The Full Scale Output Current Adjustment (PAR. 3.9) must be done before performing the following procedure, and the PRECISION 4-TERMINAL SHUNT should be still connected to the power supply output terminals. 1. Program the BOP Power Supply for PLUS FULL SCALE CURRENT, less one percent (verify by reading external DVM). E.g.
SECTION 4 - OPERATION 4.1 GENERAL The Kepco BOP Power Supply, with an installed BIT 4882, BIT 4882-F or BIT 4886 Interface Card, may be programmed over the IEEE 488 standard communication bus (General Purpose Interface Bus, GPIB) using either SCPI (Standard Commands for Programmable Instruments) or CIIL (Control Interface Intermediate Language) commands. SCPI and CIIL provide a common language used in an automatic test system. (Refer to Table 2-3 for input/output signal allocations.) 4.
TABLE 4-2.
Different programming languages (e.g., BASIC, C, PASCAL, etc.) have different ways of representing data that is to be put on the IEEE 488 bus. It is up to the programmer to determine how to output the character sequence required for the programming language used. Address information (GPIB address) must be included before the command sequence. (See PAR. 2.2.1 to establish the Interface Card GPIB address.) 4.3.
4.3.4 PROGRAM MESSAGE STRUCTURE SCPI program messages (commands from controller to power supply) consist of one or more message units ending in a message terminator (required by Kepco power modules). The message terminator is not part of the syntax; it is defined by the way your programming language indicates the end of a line (such as a “newline” or “end-of-line” character). The message unit is a keyword consisting of a single command or query word followed by a message terminator (e.g.
4.3.4.1 KEYWORD Keywords are instructions recognized by a decoder within the Interface Card, referred to as a “parser.” Each keyword describes a command function; all keywords used by the Interface Card are listed in Figure 4-1. Each keyword has a long form and a short form. For the long form the word is spelled out completely (e.g. STATUS, OUTPUT, VOLTAGE, and TRIGGER are long form keywords). For the short form only the first three or four letters of the long form are used (e.g.
You must use the rules above when using keywords. Using an arbitrary short form such as ENABL for ENAB (ENABLE) or IMME for IMM (IMMEDIATE) will result in an error. Regardless of which form chosen, you must include all the letters required by that form. To identify the short form and long form in this manual, keywords are written in upper case letters to represent the short form, followed by lower case letters indicating the long form (e.g., IMMediate, EVENt, and OUTPut).
4.3.4.8 MESSAGE TERMINATOR The message terminator defines the end of a message. Three message terminators are permitted: • • • new line (), ASCII 10 (decimal) or 0A (hex) (), ASCII 13 (decimal) or 0D (hex) both of the above ( ) Your GPIB interface card software will automatically send a message terminator. For example, the HP BASIC OUTPUT statement inserts after the last data byte. When binary data is exchanged, must be used.
4.3.6 PROGRAM MESSAGE SYNTAX SUMMARY • Common commands begin with an asterisk (*). • Queries end with a question mark (?). • Program messages 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 (;) without repeating the root keyword.
/**************************************************************************/ /* Sample Program For KEPCO power supply, using National Instruments */ /* GPIB interface card and IBM PC or compatible computer */ /**************************************************************************/ #include #include "decl.
APPENDIX A - SCPI COMMON COMMAND/QUERY DEFINITIONS A.1 INTRODUCTION This appendix defines the SCPI common commands and queries used with the BIT 4882 and BIT 4882-F Interface Cards. Common commands and queries are preceded by an asterisk (*) and are defined and explained in paragraphs A.2 through A.15, arranged in alphabetical order. Table A-1 provides a quick reference of all SCPI common commands and queries used in the Interface Card. TABLE A-1. IEEE 488.2 COMMAND/QUERY INDEX A.2 COMMAND PAR.
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).
OUTP[:STAT] = OFF. If the power supply is in either an overvoltage or overcurrent state, this condition is reset by *RST. (See example, Figure A-1.) *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.
A.11 *SRE? — SERVICE REQUEST ENABLE QUERY Syntax: *SRE? *SRE? Response: = value from 0 - 255 per Table A-3. Description: Reads the Service Enable Register. Used to determine which events of the Status Byte Register are programmed to cause the power supply to generate a service request (1 = set = function enabled, 0 = reset = function disabled). Related Commands: *SRE, *STB? (See example, Figure A-1.) A.
APPENDIX B - SCPI COMMAND/QUERY DEFINITIONS B.1 INTRODUCTION This appendix defines the SCPI subsystem commands and queries used with the BIT 4882 and BIT 4882-F Interface Cards. Subsystem commands are de +fined in PAR. B.2 through B.25, arranged in groups as they appear in the tree diagram, Figure 4-1. 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 B.2 COMMAND PAR. COMMAND PAR. INIT[:IMM] B.
NOTE: Power supply assumed to be operating in constant voltage mode. VOLT 21; CURR 1.5 INIT:CONT ON INIT:CONT? VOLT:TRIG 15;CURR:TRIG 3 *TRG VOLT 21; CURR 5E-2 MEAS:VOLT? MEAS:CURR? FUNC:MODE CURR VOLT 21; CURR 1.1 CURR? FUNC:MODE VOLT CURR:TRIG? VOLT:TRIG? TRIG INIT:CONT 0 INIT:CONT? VOLT 0 MEAS:VOLT? VOLT? CURR? MEAS:CURR? Power supply output programmed to go to 21V, current limit 1.5A Continuous triggers enabled. Power supply returns “1.
Description: B.8 Sets programmed current level at power supply output. This command programs output current to a specific value; actual output current will depend on load conditions. If the value exceeds the maximum for the model being programmed, error message -222,”Data out of range” is posted in output queue. (See example, Figure B-1.
B.13 [SOURce:]VOLTage:[:LEVel]TRIGgered[:AMPlitude] COMMAND VOLT:TRIG Syntax: Short Form: [SOUR:]VOLT[:LEV]:TRIG[:AMP] Long Form: [SOURce:]VOLTage[:LEVel]:TRIGgered[:AMPlitude] = digits with decimal point and Exponent, e.g., 2.71E+1 for 27.1 Description: Programs voltage value to be transferred to output by *TRG or TRIG commands. Actual output voltage will depend on load conditions.
Description: Sets Operation Enable Register. The Operation Enable Register is a mask for enabling specific bits in the Operation Event Register which will cause the operation summary bit (bit 7) of the Status Byte register to be set Bit set to 1 = function enabled (active, true); bit reset to 0 = function disabled (inactive, false). The operation summary bit is the logical OR of all the enabled bits in the Operation Event register. (See example, Figure B-2.) STAT:OPER:ENAB? B.
NOTE:The power supply is assumed to be operating in cV (constant voltage) mode. STAT:OPER:ENAB 1545Mask enabled for OL, RE, OT and VE bits. STAT:OPER:ENAB? Returns 1545 (32 + 1024) (OL, RE, OT and VE bits set). STAT:PRES Operation Condition and Questionable Condition registers are reset. INIT:CONT ON Continuous triggers enabled. STAT:OPER:COND? Power supply returns 768 (256 + 512) to indicate that power supply is constant voltage mode and relays are closed. STAT:OPER? Returns 1536, e.g.
SYST:ERR? B.25 SYSTem:ERRor? QUERY Syntax: Short Form: SYST:ERR? Return Value: Long Form: SYSTem:ERRor? Description: Posts error messages to the output queue. Returns the next error number followed by its corresponding error message string from the instrument error queue. The error queue is a FIFO (first in first out) buffer that stores errors as they occur. As it is read, each error is removed from the queue and the next error message is made available.
APPENDIX C - CIIL COMMAND DEFINITIONS C.1 INTRODUCTION This appendix defines the CIIL commands used with the BIT 4882, BIT 4882-F and BIT 4886 Interface Cards. Table C-1 provides a quick reference of all CIIL commands used in the Interface Card. TABLE C-1.
INX Syntax: INX VOLT (initiate voltage reading) INX CURR (initiate current reading) Function: Commences a data acquisition process in accordance with the preceding FNC command. Description: The response to the INX command is a dynamic time-out value, unless a catastrophic error condition exists, in which case an error message will be returned. If the time-out value returned is not zero, this indicates the power supply’s output voltage or current has not yet settled.
SET, SRX, SRN Syntax: FNC DCS :CH1 SET VOLT CURL FNC DCS :CH1 SET CURR VLTL SRX Set Range Maximum SRN Set Range Minimum Function: This operator is used in conjunction with FNC (in stimulus mode) to specify the output mode of the power supply being programmed. Description: The first operand is the noun modifier and the second operand specifies the value. The first operand field of the command contains the four(4) letter mnemonic for the output mode of the power supply.
RST Syntax: RST DCS :CH1 Function: This operator is used to return a power supply to its power-on state. The output voltage and current are programmed to zero. Example: RST DCS :CH1 The power supply is reset. FIGURE C-5. RST — RESET COMMAND CNF, IST Syntax: CNF or IST Function: Causes power supply to execute confidence test.
STA Syntax: STA Function: Causes power supply to return operating status to controller. Description: This operator commands the power supply to report its present operating status. Status is reported in the form of a message (character string) as defined below. Any catastrophic error conditions (indicated by * in the table below) which exist will be reported, until the error condition is corrected.
GAL Syntax: GAL Function: Enables utility commands which change error handling defaults. Description: This command enables the utility commands listed below. If no GAL command is issued, the default conditions are T0, F1, and P1. Once the GAL command is issued, the appropriate utility command may be sent to change the default condition. TABLE C-3.
