sections. The connectors on the cable are keyed by the
5-21. RF Section Adjustments. Perform the display
shape of the plug and the arrangement of the pins.
and IF section adjustments prior to performing the
Press the connectors firmly together and extend the
following RF section adjustments:
instruments as far apart as the cable will allow without
putting stress on the connectors. Remove Dummy Load
a. First Converter Circuits.
Assembly A14 from rear panel of display section and
install at P4 on rear of RF section.
1. First Local Oscillator Adjustment (Para.
5-15. FACTORY SELECTED COMPONENTS
3. 200 MHz IF Bandpass Adjustment (Para.
5-16. Table 5-2 contains
of factory selected
components by reference designation, basis' of
selection, and schematic diagram location on which the
component is illustrated. Factory selected components
are. designated by an asterisk (*) on the schematic
c. 120 MHz
Pass Fil ter Check and
5-17. RELATED ADJUSTMENTS
5-18. The following sets of adjustments are directly
d. Tuning Stabilizer Circuits
related. When one adjustment in a set is made, the
others in that set should be checked.
5-19. Display Section Adjustments . Refer to the
3. APC Search Oscillator Checks (Para.
Display Section Operating and Service Manual.
4. APC 100 kHz Rejection Adjustment (Para.
5-20. IF Section Adjustments . Refer to the IF Section
Operating and Service Manual.
5. APC Tuning Stabilizer Final Check (Para.
Table 5-1. Recommended Test Equipment
Minimum Specifications or Required Features
Frequency markers spaced 1, 10, 100 MHz apart; usable to
HP 8406A Comb
Output Amplitude: >-60 dBm
Output Amplitude: -30 dBm
Output Amplitude Accuracy: -1%
Output Flatness: 0.5 dB over full band
Output Amplitude: at least 0 dBm
(Do not substitute)