Agilent Technologies 4395A, Service Manual

Page: 203 / 343

P erformance T ests F ailure Troubleshooting
P erform the follo wing pro cedure sequen tially when an y of p erformance tests fail.
P erform Adjustments and Correction Constants
T able 6-3 gives the recommended adjustmen ts and correction constan ts when a p erformance
test fails. If a p erformance test fails, y ou should p erform the corresp onding adjustmen ts or
correction constan ts function as sho wn in T able 6-3 . If the tests still fail, refer to T able 6-4
and replace the assem bly .
Note that this table lists some t ypical cases. In a few cases, other assem bly may actually b e
faulty .
T able 6-3. Troubleshooting Information for P erformance T est F ailure 1
T est
No.
F ailed T est Adjustment T est Num b er
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 F requency Accuracy T est
p p p p p p p
2 Source Level Accuracy/Flatness
T est
p p p p p p p
3 Non-sw eep Linearity T est
p p p p p p p
4 P o w er Sweep Linearity T est
p p p p p p p
5 Harmonics/Non-harmonic T est
p p p p p p p
6 DC Bias T est
p
7 Receiv er Noise Level T est
p p p p p p p p p
8 Input Crosstalk T est
p p p p p p
9 Input Imp edance T est
p p p p p p
10 Absolute Amplitude Accuracy
T est
p p p p p p p p p p p
11 Magnitude Ratio/Phase Dynamic
Accuracy T est
p p p p p p p p p
12 Magnitude Ratio/Phase
F requency Resp onse T est
p p p p p p p p p
13 Display ed Av erage Noise Level
T est
p p p p p p p p p p p
14 Amplitude Fidelity T est
p p p p p p p p p p
15 Input A ttenuator Switching
Uncertaint y T est
p p p p
16 Noise Sidebands T est
p p p p p p
17 Amplitude Accuracy/F requency
Resp onse T est
p p p p p p p p p p
18 Second Harmonic Distortion T est
p p p p p
19 Third Order In termo dulation
Distortion T est
p p p p p p p p p p p
20 Other Spurious T est
p p p p p p p p p p p
21 Residual Resp onse T est
p p p p p p p p p p p
Troubleshooting 6-9