Keysight N9040B Option 508 - Page 68

68 Keysight Technologies N9040B UXA Signal Analyzer Service Guide
Boot Up and Initialization Troubleshooting
Potential Problems During Boot Process
AIF 510 Variable Attenuator Alignment
Algorithm
DIF 40 Step Cal Alignment Algorithm see above
DIF 40 Highband Phase Removal Algorithm see above
DIF 25 Highband Phase Removal Algorithm A3 Digital IF
AIF 255 RF Band 0 Chirp Cal Adjustment
Algorithm
A21 Wideband Analog IF
Uses 1.2 GHz internal cal
signal (not viewable on
screen), and it is possible an
external signal at the RF
input will interfere.
Assure no external signals
connected. Band 0 is < 3.6
GHz.
AIF 255 RF Band 0 Chirp Cal Alignment
Algorithm
A21 Wideband Analog IF
AIF 500 RF Band 0 Chirp Cal Adjustment
Algorithm
A21 Wideband Analog IF
Could be either WB AIF
assemblies. See if AIF 255
Chirp Cal fails also.
Uses 1.2 GHz internal cal
signal (not viewable on
screen), and it is possible an
external signal at the RF
input will interfere.
Assure no external signals
connected. Band 0 is < 3.6
GHz
AIF 500 RF Band 0 Chirp Cal Alignment
Algorithm
AIF 500 Phase Alignment Algorithm
AIF 255 UW Band 1 Chirp Cal Adjustment
Algorithm
A21 Wideband Analog IF
Uses 4.8 GHz internal cal
signal. Assure 4.8 GHz
calibrator is present by
viewing the calibrator on
screen. Band 1 is > 3.6 GHz,
high band path.
Table 2-2 Initial Alignments
Alignment Description Most Probable Hardware
Failure
Related Hardware