Installation Note N5222-90133 41
Description of this Upgrade
Step 21. Perform Post-Upgrade Adjustments and Calibration
Step 21. Perform Post-Upgrade Adjustments and Calibration
Adjustments
The following adjustments must be made due to the hardware changes of the
analyzer.
— EE default adjustment
— synthesizer Bandwidth adjustment
— source adjustment
— IF gain adjustment
— receiver adjustment
— receiver characterization
— IF response adjustment (Option S93090xA, S93092A, S93093A, or S93094A
Only)
— Noise Adjustment (Option 029 with S93029A Only)
These adjustments are described in the PNA Service Guide and in the PNA
on-line HELP. A list of equipment required to perform these adjustments is also
found in the service guide
1
.
After the specified adjustments have been performed, the analyzer should
operate and phase lock over its entire frequency range.
Else, all adjustments must be run per the instrument’s Service Guide on
.
EEPROM Backup
The analyzer uses arrays of correction constants to enable the analyzer to
produce accurate, leveled source signals and receive clean test signals. These
constants are stored in non-volatile EEPROM memory and in flash memory
files.
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.
1. See
