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16. Second IF Amplifier and Third Converter Adjustment
3-114 Adjustments
See Figure 3-65 for the typical response when the bandpass filter
is properly adjusted.
14.
On the scalar network analyzer, press @CEEQ MAX. Press cursor
A, ON and set the cursor to the -3 dB point on the low side of the
filter response (ho.1 dB).
15.
Press cursor A and set the cursor to the -3 dB point on
side on
filter response. The cursor A should read 0 fO.l dB.
the
I F A M P L I F I E R
\
Location of 301.4 MHz BPF and 280 MHz AMPTD Adjustments
301.4 MHz Bandpass Filter Adjustment Waveform
On the synthesized sweeper, press IIv13) and set the Marker to the
16.
-3 dB point on the low side of the filter response.
17.
On the synthesized sweeper, press (M4) and set the Marker to the
-3 dB point on the high side of the filter response.
C O N V E R T E R
Figure 3-64.
Figure 3-65.
high
the
A M P T D
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