Adjustments; 10 Mhz Frequency Reference Adjustment - Keysight Technologies N5221A Service Manual

Tests and Adjustments

Adjustments

Adjustments
These adjustments are firmware-driven tests that are used to fine-tune your
analyzer.
If multiple adjustments are to be performed, perform them in the order listed.
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These adjustments are described on the following pages.

10 MHz Frequency Reference Adjustment

The 10 MHz frequency adjustment is used to adjust the frequency accuracy of
the network analyzer's 10 MHz frequency reference on the A10 frequency
reference board assembly.
Equipment Used for the 10 MHz Frequency Reference Adjustment
Equipment Type
Cable, BNC, 50Ω, 24 inch
Frequency counter
Procedure
This adjustment typically adjusts to within ±0.01 ppm.
1. Connect the equipment as shown in
Keysight N5221A/22A Service Guide
"10 MHz Frequency Reference Adjustment" on page 3-41
"Synthesizer Bandwidth Adjustment" on page 3-42
"Source Adjustment" on page 3-42
"IF Gain Adjustment" on page 3-43
"Receiver Characterization" on page 3-43
"Receiver Adjustment" on page 3-44
"EE Default Adjustment" on page 3-46
"IF Response Adjustment (Option 090, 093, or 094 Only)" on page 3-46
Model or Part Number
8120-1839
53151A, Option 001
between the network analyzer and the frequency counter.
Alternate Model or Part Number
Any
Any that will measure a signal at 10 MHz.
Figure 3-14. Connect a GPIB cable
3-41