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Description of this Upgrade
Step 16. Perform Post-Upgrade Adjustments and Calibration
Step 16. Perform Post-Upgrade Adjustments and Calibration
Adjustments
The following adjustments must be made due to the hardware changes of the
analyzer.
IMPORTANT!
The 10 MHz reference crystal oscillator is the most accurate after running
for three hours. The 10 MHz Frequency Reference Adjustment can be run
after the PNA has warmed up for 90 minutes, and the other adjustments
can be completed in the order presented, but then the 10 MHz Frequency
Reference Adjustment should be repeated after the PNA has been able to
warm up for three hours.
— EE default adjustment
Figure 15 J4 Src1, J5 Src2
1. Option XSB (Source 3) is only orderable on instruments with Option 422/423. J5 Src2 is not available on all
models.
32
PNA EE Adjustment & Initialization Sub–steps:
Refer to
Figure 15
and
1. Initialize Synth LO, Synth Src1, Synth Src2
2. Adjust Synth LO, Synth Src1, Synth Src2
1
, J6 LO/LO NF, and J7 XSB
Figure 16 on page
33.
1
Connector Locations
1
1
Installation Note N5225-90142
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