13. Sweep, DAC, and Main Coil Driver Adjustments
59.
6 0 .
61.
62.
63.
64.
65.
66.
67.
68.
69.
70.
71.
72.
Alternately press
[
PEAK SEARCH
)
and adjust
GAIN 2
for marker frequency of 4.000
as indicated by display
annotation.
Key in
[
PRESEL PEAK
)=, (
START
4.5
7.1
Adjust
25
SPAN and
2.5
SPAN fully
counterclockwise.
For HP
set synthesized sweeper for output of 5.820
at 0
For HP
set synthesized sweeper for output of
5.805
at 0
Two separate signal peaks should be visible on display. Readjust
25
SPAN until separate peaks are barely discernible
from
each
other.
Use synthesized sweeper TUNING control to vary synthesized
sweeper output frequency
MHz from frequency in step 62,
pressing
PEAK
)
both times to peak preselector on each side
of band overlap point.
Use synthesized sweeper TUNING control to vary synthesized
sweeper output frequency
MHz (from frequency in step
62) in 1 MHz steps. Readjust
25
SPAN slightly as
necessary so that amplitude of displayed signal peak varies less
than 3
over entire
MHz range bracketing band overlap
point.
For HP
set synthesized sweeper for output of 5.800
at 0
For HP
set synthesized sweeper for output of
5.800
at 0
Key in
[
START FREQ
)
5.55
6.05
300
Two separate signal peaks should be visible on display. Readjust
2.5
SPAN until separate peaks are barely discernible
from each other.
Use synthesized sweeper TUNING control to vary synthesized
sweeper output frequency -5 MHz (from frequency in step 66)
in 100
steps. Readjust
2.5
SPAN slightly as
necessary so that amplitude of displayed signal peak varies less
than 3
over entire
MHz range bracketing band overlap
point.
For HP
set synthesized sweeper for output of 12.520
at 0
For HP
set synthesized sweeper for output of
12.510
at 0
Key in
PEAK
)=, (START FREQ)
13.8
RES BW (AUTO.
Use synthesized sweeper TUNING control to vary synthesized
sweeper output frequency
MHz from frequency in step 70,
pressing
PEAK
)
both times to peak preselector on each side
of band overlap point.
3-124 Adjustments
