164
RF Section Troubleshooting
Troubleshooting
NOTE In order to measure the control current correctly, press Single on the analyzer
in between each measurement.
If any of the preselector control currents do not match the levels shown in
Table 4-9, the most probable causes are a misaligned YTF or the A15 Front End
Control Assembly. Perform the YTF characterization (press System,
Alignments, More, Ad vanced, Characterize Preselector) and re-check the
control current at various center frequencies.
NOTE Tolerances should be used as a guideline. The true test is whether or not the
analyzer will function and meet published specification.
Table 4-9 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
To Next Page
Loading...
