Keysight N9010B - Page 159

Keysight N9010B EXA Signal Analyzer Service Guide 159
RF Section Troubleshooting (RF/Microwave Analyzers)
Troubleshooting
If any of the preselector control currents do not match the levels shown in
Table 4-8, the most probable causes are a misaligned YTF or the A15 Front End
Control Assembly. Perform the YTF characterization (press System,
Alignments, Advanced, Characterize Preselector) and re-check the control
current at various center frequencies.
Table 4-8 YTF Tune Current
Center Frequency
(GHz)
Control Current
(mA)
Tolerance
(mA)
5.0 106 ±20
10
a
215 ±25
15
b
324 ±30
20
b
430 ±40
26
b
560 ±50
a. Options 513 and 526
b. Option 526
Tolerances should be used as a guideline. The true test is whether or not
the analyzer will function and meet published specification.