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CIRCUIT ALIGNMENT
10kQ
as
0. ae
VIF alignment
Input probe
Output probe
ser
a
DC 15.5V
C644 +
By using T141, adjust "P" to
AGC voltage (4.3-4.5V)
1C201-pin48
be maximum amplitude.
Output probe
1C201-pin45
(Side b)
Input probe
1C201-pin7
39.5MHz
20dB
Marker frequency
Sweep ATT
OdB=176mVrms/75
Trap alignment
sera
ee
(Side a)
Q101-C
Input probe
Marker frequency
Sweep ATT
OdB=176mVrms/75
41.5MHz
11dB
SIF alignment
SETTING
Adjustment
Waveform
DC 12V
1IC3801-pin11
1. Adjust AGC voltage to be
AGC voltage
1C3801-pin3
"A" = 0.5Vp-p.
nan
Output probe
1IC3801-pin1
2. By using T3801, adjust "P"
p
(Side b)
to be equal centre line.
Input probe
1IC3801-pin12
Sweep ATT
10dB
Marker Frequency
38.5MHz
F2VCV
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