Fluke 5790B, Руководство по обслуживанию

Страница: 102 / 172

5790B
Service Manual
3-64
12. Proceed to the first frequency listed in Table 3-17 and adjust the 5730A to
the TOTAL ERROR value (sign and magnitude) listed in Table 3-16.
13. Read the error on the Product error display and record in the WIDEBAND
input verification test record, Table 3-17.
14. Proceed to the next frequency in the table and set the 5730A to 3.2 V.
(the error values are set relative to the nominal 3.2 V level). Adjust the
5730A to the TOTAL ERROR value (sign and magnitude) listed in Table
3-16, and read and record the error in Table 3-17.
15. Repeat step 14 for all frequencies in Table 3-17 for that range.
16. Proceed to the next range and establish the 1-kHz reference at 3.2 V as
in step 10. Push the “SET REF” soft key on the Product, and proceed
through each frequency in the table. Reset the 5730A to 3.2 V after each
frequency is measured. The error values are set relative to the nominal
3.2 V level.
17. Verify all other ranges in the same way.
Verification of AF Option
The following procedure is a part of calibration 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 using the
provided cable. Proceed as follows to verify the calibration performance of the AF
option. Calibration is performed with a characterized 1 mW @ 50 MHz source.
Characterize the source prior to use with the reference power measurement
system.
Table 3-18 lists the equipment required to perform the calibration adjustment of
the AF option of the product.
Table 3-18. Required Equipment for Calibration of the AF Option
Required Equipment Manufacture and Model Minimum use Requirements
Power meter with REF OUT N/A
0.1 % short term stability. SWR
better than 1.05
Power Meter Tegam 1830A Published specifications
Coaxial RF Power Standard
Tegam M1130A or Keysight
478A (Option H76) Calibration uncertainty of 0.3 %
or better.