Agilent Technologies E5071C ENA Service Manual page 30

General Information
Power Meter Accuracy Test
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Step 6. Allow the equipment to warm up for approximately 30 minutes. Do not change any
connections or control setting during this time.
Step 7. Zero and calibrate the power meter channel to which the range calibrator is connected:
a. The range calibrator's RANGE switch should be set to 1 mW.
b. Set the range calibrator's FUNCTION switch to STANDBY.
c. Press
d. Set the range calibrator's FUNCTION switch to CALIBRATE.
e. Press
Step 8. Monitor the drift rate of the power meter reading: Five minutes following calibration, the
meter must read 0.001, 0.000, or -0.001 dBm. If the power meter reading is not one of these
values, allow additional warm up time, then check the drift rate again. The range calibrator
must remain connected to the power meter during this warm up time.
Step 9. Zero and calibrate the power meter channel to which the range calibrator is connected:
NOTE
After a channel on the power meter is calibrated, do not allow more than 5 minutes to
elapse before completing the remaining measurement steps for that channel.
a. The range calibrator's RANGE switch should be set to 1 mW.
b. Set the range calibrator's FUNCTION switch to STANDBY.
c. Press
d. Set the range calibrator's FUNCTION switch to CALIBRATE.
e. Press
Step 10. Record the DVM voltage reading as value A in the test record on page 32.
NOTE
All DVM readings in this procedure should be recorded showing five significant digits.
Step 11. The reading on the power meter should be 0.000±0.001 dBm.
Step 12. Switch the range calibrator RANGE to 300 μW.
Step 13. Record the DVM voltage reading as value B in the test record.
Step 14. Wait for the power meter reading to settle (no settling drift within 20 seconds).
Step 15. Record the power meter reading as value C in the test record.
Step 16. Switch the range calibrator RANGE to 100 μW.
30
POLARITY: NORMAL
RANGE: 1 mW
FUNCTION: CALIBRATE
, then
[Zero/Cal] Zero A
complete.
, , then
[Zero/Cal] Cal
complete.
[Zero/Cal] , then Zero A
completed.
[Zero/Cal] , Cal , then
complete.
or (as appropriate). Wait for the operation to
Zero B
or (as appropriate). Wait for the operation to
Cal A Cal B
or Zero B (as appropriate). Wait for the operation to be
Cal A or Cal B (as appropriate). Wait for the operation to
Chapter 1