TB 9-6625-2235-24
(g) SWEEP TRIGGER switch to FREE RUN.
(3) Position LO feedthrough signal on center crt vertical graticule line with
TUNING control.
Figure 7. Span width and frequency accuracy - equipment setup.
(4) Depress FREQUENCY CAL pushbutton and adjust FREQUENCY ZERO
control for zero indication on FREQUENCY MHz readout.
(5) Repeat (3) and (4) above until LO feedthrough signal remains positioned on
center vertical graticule line of crt.
(6) Adjust synthesizer/level generator frequency to 20 MHz and amplitude output
level to +10 dBm.
(7) Adjust TUNING control for 500 MHz indication on FREQUENCY MHz readout.
(8) Press FREQUENCY CAL pushbutton and center 500 MHz comb signal on crt
with TUNING control.
(9) Adjust RESOLUTION BW and INPUT ATTEN (OPTIMUM INPUT) switches
to view 20 MHz comb signal on crt.
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