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Service Procedures 177
Appendix D
General Calibration/Adjustment Procedure
The adjustment procedures described in in this appendix use the CALibrate
subsystem commands to generate and set internal calibration constants. This
general SCPI command procedure is the same for all calibration setups.
1. Unsecure the function generator See “Calibration Security Code” on
page 174. Use the following SCPI command
CAL:SEC:STAT OFF,<sec_code>
set secure state off; enable cal
2. Send the Calibration Setup. Use the following SCPI commands:
CALibrate:SETup <setup_number>
configures the output
3. Use the reccomended instrument to measure the actual output of the
Agilent E1441A
4. Send the measured value to the Agilent E1441A with the
CAL:VALue command. The function generator will correct its output
and store the new calibration constant. Use the following SCPI
command:
CAL:VALue <measured_val>
set the calibration value
5. Initiate the calibration process. Use the command:
CAL? performs calibration and
updates the cal constant
<read the CAL? response; 0 = cal OK, 1 = cal error>
6. Repeat steps 2 through 5 for each calibration setup.
Calibration Example
The following example command sequence demonstrates making the
Frequency and Burst Rate adjustments.
/* Adjust main frequency generator */
CAL:SEC:STAT OFF,<sec_code>
secure state off
CALibrate:SETup 00 configure frequency cal
(setup 00)
*OPC?
wait for output to stabilize
<enter "1" from *opc? when complete>
<read the frequency counter value>
CAL:VALue <counter_value> set calibration value
CAL? perform calibration
<read the CAL? response; "0"=cal OK, "1"=cal error>
/* Adjust burst rate timing, pulse output */
CALibrate:SETup 01
configures burst rate cal
(setup 01)
*OPC?
wait for output to stabilize
<enter "1" from *opc? when complete>
<read the frequency counter value>
CAL:VALue <counter_value>
set calibration value
CAL?
perform calibration