HP 8568B, Performance Tests And Adjustments Manual, Page: 226 / 313

16. Second IF
Amplifier and
Third Converter
Adjustment
Reference
RF Section:
Second IF Amplifier
Third Converter
Description
A synthesized sweeper is used to inject a signal of 301.4 MHz at -20
in to
the
Second IF Amplifier. The output of the amplifier is
displayed on a scalar network analyzer. The amplifier is adjusted for
a
of greater than 7 MHz and less than 14 MHz centered at
301.4 MHz. Its gain should be greater than 14 and less than 17
A spectrum analyzer is used to view the output of the 280 MHz
Oscillator on
the
Third Converter and the oscillator is centered in
its adjustment range.
SYNTHESIZED WEEPER
ANALYZE
METER
2 0
ATTENUATOR
NETWORK ANALYZER
SPECTRUM ANALYZER
U n d e r
Figure 3-63. Second IF Amplifier Adjustments Setup
Equipment
Spectrum Analyzer . . . . . . . . . . . . . . . . . . . . . . . . .
HP
Synthesized Sweeper . . . . . . . . . . . . . . . . . . . . . . . . HP
Scalar Network analyzer . . . . . . . . . . . . . . . . . . . . . . . HP
Power Splitter . . . . . . . . . . . . . . . . . . . . . .
HP Opt. 001
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A
Power Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP
Detector (2 required) . . . . . . . . . . . . . . . . . . . . . . . . .
HP
20 Attenuator . . . . . . . . . . . . . . . . . . . . HP Opt. 020
Adjustments