Chapter 3 111
Manual Adjustment Procedures
1. IF Bandpass Adjustment
Equipment
Digital voltmeter ......................................................... 3456A
DVM test leads ............................................................ 34118A
Special tuning tool
(use with slotted tuning slugs) ........................................ 8710-1010
Special tuning tool
(use with forked tuning slugs) .......................................... 8710-0772
Procedure
1. Turn the spectrum analyzer off by pressing LINE. Disconnect the
power cord. Remove the spectrum analyzer cover and fold down the
A2 controller, A3 interface, A4 log amp, and A5 IF assemblies.
Reconnect the power cord. Turn the spectrum analyzer on and allow
it to warm up for at least 30 minutes.
2. Connect the negative DVM lead to pin 6 of A5J6. See Figure 3-5 on
page 110 and Figure 3-6 on page 112. Set the 3456A controls as
follows:
Function .............................................................DCVOLTS
Range .................................................................. 10VOLTS
3. On the spectrum analyzer press
PRESET, SPAN, 2, MHz, CAL, and IF
ADJ ON OFF so OFF is underlined.
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