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MAIN 1 fcNANCE
7.
Select the 6.0 kHz IF Bandwidth position and adjust
A4A1R28 for the same dBm reading obtained in step 6.
8.
Select the 50 kHz IF Bandwidth position and adjust
A4A1R30 for the same dBm reading obtained in step 6.
9.
Deenergize the receiver and disconnect test equipment.
10.
Install A4A2 and A4A1 into the proper slots.
4.3.6.3.3
455 kHz Amplifier/AM Detector, A4A7, (76002) Response Alignment
1.
Deenergize the receiver.
2.
Remove cards A4A3 and A4A10.
Place A4A7 on an
extender card.
3.
Connect the test equipment as shown in Figure 4-4.
4.
Set up the Sweep Generator as follows:
a.
Power
ON
b.
CW/Sweep
SYM
c .
Trig/Line/Free
Line
d.
Fast/Slow/Manual
Fast
e.
Crystal Cal
OFF
f.
Range
11
g-
Sym Sweep Width
Vernier
.1/1
h.
1
kHz Mod
OFF
i.
Output Level
-60 dBm
J".
Frequency
455
kHz
5.
Set up the Marker Generator for a 455 kHz output,
unmodulated, at -80 dBm.
6.
Set the receiver .controls as follows:
a.
Meter
-
n/a
b.
Gain Mode
-
Manual
c.
Detection Mode
-
N/A
d.
RF Gain
-
Maximum Clockwise
e.
Phone Level
-
N/A
f.
IF Bandwidth
-
N/A
g.
Receiver Frequency -
N/A
h.
BFO offset
-
N/A
4-67
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