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3-9 to obtain the correct input magnitude for the current range. The
Product will measure the magnitude. Record this value in Table 3-8.
16. Push the "Continue" softkey and enter the 1 kHz reference value just
measured for the "APPLIED VALUE". The 2.2 V 1 kHz reference will be
measured and the calibration program will continue the 2.2 V 10 Hz step.
17. Set the 5730A to 3.2 V at 10 Hz and adjust the 5730A to the total error
value at 10 Hz for the 2.2 V range as recorded in Table 3-8.
18. Push the [Continue] key and the system will calibrate the range at 10 Hz
and step to the 50 Hz calibration point as before.
19. Set the 5730A to 50 Hz and adjust for errors. Push "Continue".
20. The system will calibrate the 50 Hz point and step to the 400 Hz point.
21. Proceed through the range at each calibration point as before by applying
the proper frequency and error values.
22. All remaining ranges are done in a similar manner by installing the proper
attenuators establishing the 1 kHz reference and adjusting for errors at
each frequency. The calibration program returns to the calibration screen.
Nothing has been saved in nonvolatile memory yet. To make calibration
valid, the constants must be stored. Select "Cal Store" then enter the
passcode. The Cal Store field changes from "Secured" to "Open".
23. Select "Save Cal" constants. The display indicates "Save Operation
Complete".
24. Push OK. The "Save Cal Constant" field changes to "Not Needed".
25. Push "Cal Store" to change Cal Store to "Secured". The Wideband
Adjustment Date also changes to the current date. Adjustment date can
be viewed by selecting Setup Menu>Calibration>View/Update Cal
Dates.
Calibration Adjustment of AF Option
The following procedure is a part of calibration adjustment only if the 5790B/AF
Option is installed in your Product. 5790B with an AF Option are supplied with a
dedicated cable for this option. The calibration of the Product is only valid when
the provided cable is used. The AF option calibration is affected by calibration
adjustment of the Product Wideband Flatness. Always perform AF Option
calibration adjustment after Flatness Adjustment. This procedure is initiated
through remote commands only. Refer to the 5790B Operators Manual for
information on establishing remote communication. Proceed as follows to
perform AF calibration adjustment. Calibration adjustment is performed with a
characterized 1 mW @ 50 MHz source. Characterize the source prior to use with
the reference power measurement system.
Table 3-10 lists the equipment required to do the calibration adjustment of the AF
option of the Product.
Calibration Adjustment and Verification
3
Calibration
3-35
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