Keysight N9040B Option 508 - Page 67

Keysight Technologies N9040B UXA Signal Analyzer Service Guide 67
Boot Up and Initialization Troubleshooting
Potential Problems During Boot Process
AIF Variable Gain Algorithm A2 Analog IF
AIF Step Gain Algorithm A2 Analog IF
LO Power Alignment Algorithm A13 Front End Assembly or
A15 Front End Controller
AIF Variable Attenuator Algorithm A2 Analog IF
Mechanical Attenuator Algorithm A9 and A10 RF Input
Attenuators
50 MHz calibrator on A16
Reference
Electrical Attenuator Algorithm A13 Front End 50 MHz calibrator on A16
Reference.
Control signals from A15 Front
End Controller
LO Nulling Full Alignment Algorithm A13 Front End
LO Nulling Min Alignment Algorithm A13 Front End
LO Nulling Full MB Alignment Algorithm A13 Front End
LO Nulling Min MB Alignment Algorithm A13 Front End
LO Nulling Full WB Alignment Algorithm A13 Front End
LO Nulling Min WB Alignment Algorithm A13 Front End
Narrow Band Step Cal Adjustment Alignment
Algorithm
Alignment signal originates
on A3 D-IF, then goes
through A16 Reference,
through A13 Front End,
through A2 Analog IF, and
back to A3 Digital IF. If
Option B1X present, A25
WB A-IF switches calibrator
signal to A16 Reference.
Narrow Band Step Cal Alignment Algorithm
DIF 40 Step Cal Adjustment Alignment
Algorithm
Since this is wide band
alignment done for 40 MHz
BW signal path, A2 Analog
IF is not included in the
signal path.
DIF 40 Variable Attenuator Algorithm A3 Digital IF
AIF 255 Variable Attenuator Alignment
Algorithm
A21 Wide band A-IF
Table 2-2 Initial Alignments
Alignment Description Most Probable Hardware
Failure
Related Hardware