Keysight N9010A EXA Service Guide 71
Boot Up and Initialization Troubleshooting
Potential Problems During Boot Process
DIF 40 Step Cal Ad justment Alignment
Algorithm
Recalled adjustment from calibration file. (Option B40)
Since this is wide band
alignment done for
40 MHz BW signal
path, A2 Analog IF is
not included in the
signal path.
Narrow Band Step Cal Alignment Algorithm
DIF 40 Step Cal Alignment Algorithm
(Option B40)
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.
Signal path from A13
Front End to A3 Digital
IF
A16 Reference may not be
providing 50 MHz E-Cal
Low Band Nominal Path System Gain
Algorithm
Aligns low band (9 kHz 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.
A13 Front End 50 MHz calibrator on A16
Reference.
A9 and A10 Input attenuators
Low Band Preamp Path System Gain Algorithm
Aligns low band (9 kHz to 3.6 GHz path) with preamp
ON.
Input attenuator set to 20 dB.
(Options P03, P07, P32, P44)
A13 Front End 50 MHz calibrator on A16
Reference.
A9 and A10 Input attenuators
Low Band Elec Atten Path System Gain
Algorithm
Aligns low band with electronic attenuator in the signal
path and set to 0 dB.
(Option EA3)
A13 Front End 50 MHz calibrator on A16
Reference.
A9 and A10 Input attenuators
Preselector Two Point Tuning Algorithm
Aligns the YTF preselector centering near the maximum
and minimum frequency points of the YTF.
Uses the high band preamp noise as stimulus signal.
A12 YTF Preselector
or
A15 Front End
Controller
or
All Low Band
A13 Front End
High Band Nominal Path System Gain
Algorithm
Anything in Band 1
signal path
4800 MHz calibrator on A16
Reference
Table 2-2 Initial Alignments
Alignment Description Most Probable
Hard ware Failure
Related Hard ware
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