TB 9-6625-2235-24
(4) Center signal on crt with TUNING control.
(5) Position signal peak at top crt horizontal graticule line with REFERENCE
LEVEL and REF LEVEL FINE controls.
(6) Maintain signal center with TUNING control while setting FREQ SPAN/ DIV
switch to 20 kHz and RESOLUTION BW switch to 1 kHz.
(7) Turn VIDEO FILTER control fully cw (not in detent).
(8) Measure noise sidebands existing more than 2.5 divisions (50 kHz) from
400 MHz signal. Noise sidebands will be greater than 65 dB (6.5 divisions) down from top
horizontal graticule line.
b. Adjustments. No adjustment can be made.
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.