86 Chapter2
Making Adjustments
13. Third Converter and Second IF Bandpass
Additional Equipment for Models 8590L
Option 713
Microwave frequency counter
Additional Equipment for 75 Ω Input
Adapter, minimum loss
Adapter, 75 Ω to 50 Ω
Adapter, Type N (f) 75 Ω to BNC (m) 75 Ω
Cable, BNC, 75 Ω, 30 cm (12 in)
Procedure
Second IF Bandpass Filter
1. Press INSTRUMENT PRESET on the microwave spectrum
analyzer, then set the controls as follows:
CENTER FREQUENCY ............................ 21.4MHz
FREQUENCY SPAN ..................................... 50MHz
REFERENCE LEVEL .................................. −30dBm
dB/DIV ......................................................... 1dB/DIV
2. Set the synthesized sweeper controls as follows:
CW ............................................................. 321.4MHz
POWER LEVEL ........................................... −26dBm
3. Turn the analyzer
LINE switch to OFF. Remove the instrument cover
assembly.
4. Remove the first IF bandwidth filter assembly, A11.
5. Install the IF test board into the A11 slot.
6. Remove the W9 cable from A9J4, 321.4 MHz IF INPUT.
7. Connect the synthesized sweeper output to A9J4. Refer to
Figure 2-22.
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