64 Chapter2
Making Adjustments
7. Log and Linear Amplifier
Procedure
1. Turn the analyzer LINE switch to OFF. Remove the instrument cover
assembly.
2. Remove the first IF bandwidth filter assembly, A11. Install the IF
test board into the A11 slot. Turn the analyzer
LINE switch to ON.
3. Set the DMM to read dc volts.
4. Press the following analyzer keys.
PRESET
CAL, More 1 of 4
CORRECT ON OFF (OFF), More 2 of 4
SERVICE DIAG
STP GAIN ZERO
SPAN, 0, Hz
BW, 10, kHz
VID BW AUTO MAN, 300, Hz
AMPLITUDE, 10, −dBm
SCALE LOG LIN (LIN)
5. Set the synthesizer as follows:
FREQUENCY ............................................. 21.4MHz
MANUAL TUNE ................................................... ON
AMPTD INCR .............................................. 0.01dBm
AMPLITUDE .................................................. −6dBm
6. Connect equipment as shown in Figure 2-11. Connect the output of
the synthesizer to J2 of the IF test board. Connect the DMM to AUX
VIDEO OUT (located on the rear panel).
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