Keysight Technologies Option 503 Service Manual page 80

Boot Up and Initialization Troubleshooting
Potential Problems During Boot Process
Table 2-3 Initial Alignments
Alignment Description
High Band Preselector Bypass Preamp Path
System Gain Algorithm (Option MPB)
Burst Carrier Trigger Curve Fit Algorithm
Detects the level of the signal envelope before
filtering at the 22.5 MHz IF, and compares that
detected level against the trigger threshold DC
level.
DIF 25 Pulse Stretcher Alignment Algorithm
DIF 40 Pulse Stretcher Alignment Algorithm
Adjusts time between trigger and clock signal.
WBDIF Pulse Stretcher Alignment Algorithm
DC Offset Alignment Algorithm
(Option BBA)
Using an external USB keyboard and mouse you can also access the alignment
history, which can be found in a text file at:
E:\AlignDataStorage\AlignmentHistory.txt
You will find the most current alignment information at the bottom of this file.
Look for the failed alignments and troubleshoot the Related Hardware based
on the information provided in
80
Most Probable Related Hard ware
Hard ware Failure
A11 Low Band
Switch
Preselector Bypass
Switch(s)
A2 Analog IF
A3 Digital IF
A3 Digital IF
A26 WBDIF
A19 BBIQ Main
A18 BBIQ Interface
Table 2-3.
N9030A PXA Signal Analyzer Service Guide