General Program Instructions - Keithley 2750 Service Manual

Model 2750 Multimeter/Switch System Service Manual

General program instructions

1. With the power off, connect the Model 2750 and the calibrator to the IEEE-488
interface of the computer. Be sure to use shielded IEEE-488 cables for bus connec-
tions.
2. Turn on the computer, Model 2750, and calibrator. Allow the Model 2750 and the
calibrator to warm up for at least one hour before performing calibration.
3. Make sure the Model 2750 is set for a primary address of 16. (Use the front panel
GPIB key to check or change the address.)
4. Make sure the calibrator primary address is at its factory default setting of 4.
5. Make sure that the computer bus driver software (CECHP.EXE) is properly initial-
ized.
6. Enter the QBasic editor, and type in the program below. Check thoroughly for
errors, then save it using a convenient filename.
NOTE
7. Run the program, and follow the prompts on the screen to perform calibration.
Figure C-1
Model 2750 calibration program
' Model 2750 calibration program.
' Rev. 1.0, 3/1/2001
OPEN "IEEE" FOR OUTPUT AS #1
OPEN "IEEE" FOR INPUT AS #2
PRINT #1, "INTERM CRLF"
PRINT #1, "OUTTERM LF"
PRINT #1, "REMOTE 4 16"
PRINT #1, "CLEAR"
PRINT #1, "OUTPUT 16;:SYST:PRES;*CLS"
PRINT #1, "OUTPUT 16;*ESE 1;*SRE 32"
PRINT #1, "OUTPUT 4;*RST;*CLS;STBY"
PRINT #1, "OUTPUT 4;CUR_POST NORMAL"
C$ = ":CAL:PROT:"
'
CLS
PRINT "Model 2750 Multimeter Comprehensive Calibration Program"
PRINT #1, "OUTPUT 16;:CAL:PROT:CODE 'KI002750'"
PRINT #1, "OUTPUT 16;:CAL:PROT:INIT"
GOSUB ErrCheck
RESTORE CmdList
'
FOR I = 1 TO 25
READ Msg$, Cmd$
The program assumes a default calibration code of KI002750. If the calibration
code has been changed, modify the :CAL:PROT:CODE parameter accordingly.
Calibration Program
' Open IEEE-488 output path.
' Open IEEE-488 input path.
' Set input terminator.
' Set output terminator.
' Put 2750, 5700A in remote.
' Send DCL.
' Initialize 2750.
' Enable OPC and SRQ
' Reset 5700A calibrator.
' Normal current output.
' 2750 partial command header.
' Clear CRT.
' Send KI002750 cal code.
' Initiate calibration.
' Loop for all cal points.
' Read message, cal strings.
C-3