Fluke 5520A Programmer's Manual page 4

The 5520A Calibrator (hereafter
referred to as "The Calibrator") can
produce voltages up to 1000 V rms and
must be programmed with caution to
prevent hazardous voltages from being
produced without sufficient warning to
the operator.
Write programs carefully and test them
extensively to ensure safe operation of
the Calibrator. Fluke suggests that you
include error-catching routines in your
programs. These error-catching
routines will help you identify
programming errors that may cause the
calibrator to behave other than
intended. You can program the
Calibrator to cause an SRQ when an
error is detected by setting the Service
Request Enable (SRQ) register. The
following skeleton program includes
error-catching code:
10 PRINT @4, "*CLS"
20 PRINT @4, "*SRE 8" ! Set SRE Error Avail.
30 ON SRQ GOTO 1000
100
900 STOP
1000 REM Start of SRQ Handler
1010 PRINT @4, "FAULT?" ! Request fault code
1020 INPUT @4, A%
1030 PRINT @4, "EXPLAIN? ";A%! Request fault text
1040 INPUT @4, A$
1050 PRINT "Fault ";A$" detected" ! Print message
1060 PRINT @4, "STBY"
1070 STOP
Warning
! Clear status
! Enable SRQ Function
! Body of program here
! End of program
! Input fault code
! Input fault text
! Place 5520A in standby
2
! Start routine