Model 8640B TM 9-4935-601-14-7&P
ADJUSTMENTS
5-37. RF FILTER ADJUSTMENT (Cont'd)
Table 5-3. RF Filter Check
Signal Generator Spectrum Pass Band Stop Band
Analyzer Adjust-
Frequency ment
RANGE FREQUENCY Filter* Span Per Frequency Maximum Frequency Minimum (A10A1)
(Band) TUNE* Division Loss Loss
256-512 MHz Full cw High 100 MHz 550 MHz <3 dB 692 MHz >30 dB C81-84
Full ccw Low 50 MHz 356 MHz <3 dB 460 MHz >30 dB L43-45
128-256 MHz Full cw High 50 MHz 275 MHz <3 dB 346 MHz >30 dB L40-42
Full ccw Low 20 MHz 128 MHz <3 dB 230 MHz >30 dB L37-39
64-128 MHz Full cw High 20 MHz 137 MHz <3 dB 173 MHz >30 dB L31-33
Full ccw Low 10 MHz 89 MHz <3 dB 115 MHz >25 dB None
32-64 MHz Full cw High 10 MHz 69 MHz <3 dB 86.5 MHz >25 dB None
Full ccw Low 5 MHz 45 MHz <3 dB 58 MHz >25 dB None
16-32 MHz Full cw High 5 MHz 34 MHz <3 dB 43.2 MHz >20 dB None
Full ccw Low 2 MHz 22 MHz <3 dB 28.7 MHz >20 dB None
8-16 MHz Full cw High 2 MHz 17.0 MHz <3 dB 21.6 MHz >15 dB None
Full ccw Low 2 MHz 11.0 MHz <3 dB 14.3 MHz >15 dB None
4-8 MHz 1 MHz 8.6 MHz <3 dB 10.7 MHz >38 dB None
2-4 MHz 1 MHz 4.3 MHz <3 dB 5.40 MHz >40 dB None
1-2 MHz 1 MHz 2.2 MHz <3 dB 2.70 MHz >30 dB None
0.5-1 MHz 1 MHz 1.1 MHz <3 dB 1.30 MHz >30 dB None
* The 0.5 to 8 MHz bands have a single filter for each band. Geometric mean switching does not take place and the
FREQUENCY TUNE control can be left at any position.
5-26
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