Keysight Technologies Option 503 Service Manual page 78

Boot Up and Initialization Troubleshooting
Potential Problems During Boot Process
Table 2-3 Initial Alignments
Alignment Description
Aif140 Extended Step Cal Ad justment
Alignment Algorithm (option B1Y)
Extends performance from 140 MHZ to
160 MHz BW
AIF 140 Extended Step Cal Alignment
Algorithm (Option B1X)
AIF 140 Extended Highband Switched Filter
Removal Algorithm
The 4.8 GHz Cal signal is used to provide a
highband signal. (Option B1X)
Dif40 Highband Phase Removal Algorithm
Uses 4.8 GHz calibrator and Preselector Bypass
path. Requires stable YTO.
Dif25 Highband Phase Removal Algorithm
Uses 4.8 GHz calibrator and Preselector Bypass
path. Requires stable YTO.
Aif140 Highband Phase Removal Algorithm
(option B1X)
Uses 4.8 GHz calibrator and Preselector Bypass
path. Requires stable YTO.
Aif140 Extended Highband Phase Removal
Algorithm (option B1X)
Uses 4.8 GHz calibrator and Preselector Bypass
path. Requires stable YTO
E Cal Path System Gain Algorithm
Measures the amplitude error of the low band
signal path by injecting the 50 MHz E-Cal
signal into the A13 Front End assembly. The
E-Cal signal originates on the A16 Reference
assembly.
Low Band Nominal Path System Gain
Algorithm
Aligns low band (3 Hz to 3.6 GHz path) with
preamp and electronic attenuator OFF.
Dependent on successful E-Cal alignment.
Input attenuators set to 10 dB and DC coupled.
78
Most Probable Related Hard ware
Hard ware Failure
A13 Front End
assembly switched
filter might roll off
too much to
achieve 160 MHz
BW
A3 Digital IF A16 Reference assy.
Preselector Bypass path
issue.
A3 Digital IF A16 Reference assy.
Preselector Bypass path
issue.
A25 Wideband A-IF A16 Reference assy.
Preselector Bypass path
issue.
A25 Wideband A-IF A16 Reference assy.
Preselector Bypass path
issue.
Signal path from A16 Reference may not be
A13 Front End to A3 providing 50 MHz E-Cal
Digital IF
A13 Front End 50 MHz calibrator on A16
Reference.
A9 and A10 Input
attenuators
N9030A PXA Signal Analyzer Service Guide