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NOTE
10
! This program shows you how to perform a TIME INTERVAL calibration
20
! using HP-IB.
30
! a quick calibration, requiring a simple calibration signal, and
40
! a FINE calibration, requiring a more complex signal--but producing
50
! a better result.
60
!
When you perform a calibration, the additional steps required
70
! include: storing a backup copy of old calibration data, using
80
! the security system to UNSECURE the counter prior to calibration,
90
! using the security system to SECURE the counter after calibration.
100
!
These tasks are coded below.
110
!
120
! PROGRAM SHOWS:
130
!
FINE Time Interval Calibration
140
!
QUICK Time Interval Calibration
150
!
160
!
Storing current calibration values before recalibrating--as a backup
170
!
Restoring the backup calibration values
180
!
190
!
SECURING and UNSECURING the counter
200
!
210
!
220
DIM Cal_data$[57]
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DIM Err_string$[255]
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CLEAR SCREEN
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ASSIGN @Count TO 703
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ASSIGN @Cal TO 708
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280
!
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GOSUB Init
300
GOSUB Store_cal
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GOSUB Unsecure
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!
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INPUT "Which calibration: QUICK or FINE?",Answer$
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IF Answer$[1,1]="f" OR Answer$[1,1]="F" THEN
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GOSUB Cal_fine
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ELSE
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GOSUB Cal_quick
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END IF
390
!
400
GOSUB Restore_cal
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GOSUB Resecure
420
GOTO End
430 Init: !
Chapter 3 Programming Your Universal Counter for Remote Operation
Elements of SCPI Commands
To Perform a Time Interval Calibration (HP BASIC)
Early versions of the Counter cannot execute this program since they do not
support calibration security or "fine" time interval calibration.
There are two types of Time Interval calibration:
Both calibrations are coded below.
Programming Guide
! Array to hold calibration data
! Array to hold error message
! Assign I/O path for Counter
! Assign I/O path for Calibrator
! used only for the FINE calibration
3-69
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