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5790B
Service Manual
Required Equipment
Power meter with REF OUT
Power Meter
Coaxial RF Power Standard
PC with USB or serial port running Microsoft hyperterminal program
(hyperterm.exe) or similar
1. Connect the Power Reference System (Power Meter with Coaxial RF Power
2. Connect the matching N-type cable supplied as part of the AF option to the
3. Connect to the source used in step 1.
4. Execute the remote command string: INPUT WBND; DFILT FAST, MEDIUM;
5. Execute the remote command string: *CLS; CAL_WBCABLE zzzzzz V; *OPC
6. Where zzzzzz represents the voltage equivalent of the characterized source.
7. This completes the Product AF Option calibration. When finished the
8. The date of the AF 50 MHz cable calibration can be obtained by executing
3-36
Table 3-10. Required Equipment for Calibration Adjustment of the AF Option.
N/A
Tegam 1830A
Tegam M1130A or Keysight
478A (Option H76)
Standard) to the 1 mW @ MHz source. Make a measurement to establish the
output of the source. This value shall be used in consecutive measurement
with the product.
Wideband input.
A characterized value in mW the conversion to voltage is as follows:
calibration screen is shown. The correction is automatically stored.
the remote query: CAL_DATE? STORED,WBCABLE
Manufacture and Model
√
mW_value * 50 * 10
Minimum use Requirements
0.1 % short term stability. SWR
better than 1.05
Published specifications
Calibration uncertainty of 0.3 %
or better.
RS-232 serial communication
-3
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