Kenwood TK-372G Service Manual page 41

Item Condition
K4 type
1. Sensitivity Adj item [SENS]
Adjustment Adjust [∗∗∗]
f
L
.
[S E N S]
2. BPF (PANEL TEST MODE)
CH-Sig 2-1
Tra-G setting -40dBm
CH-Sig 1-1
CH-Sig 3-1
3. Sensitivity [Panel Test Mode]
Check 1) CH-Sig:1-1
SSG OUT
Wide:-118dBm (0.28µV)
(MOD:1kHz / ±3kHz)
Narrow:-116dBm (0.35µV)
(MOD:1kHz / ±1.5kHz)
4. Squelch (Open) 1) Adj item [SQL3]
Adjust Adjust [∗∗∗]
[Wide] SSG OUT
Wide:-123dBm
[Narrow] 2) Adj item [SQL3.]
Adjust [∗∗∗]
SSG OUT
Narrow:-126dBm
5. Squelch(Tight) 1) Adj item [SQL9]
Adjust Adjust [∗∗∗]
[Narrow] 2) Adj item [SQL9.]
SSG OUT:-115dBm (0.4µV)
6. Squelch [Panel Test Mode]
Check 1) CH-Sig:1-1
SQ Level : [SQL5]
SSG OUT:
-118dBm (0.28µV)
2) SSG OUT:OFF
ADJUSTMENT
Measurement
Test equipment
DVM
f f
c H
. . . . . . . .
[S E N S] [S E N S ]
Tracking generator
spectrum analyzer
Fig. 1
SSG
AF VTVM
Oscilloscope
Adjustment
Terminal Parts
Encoder knob
ANT TC301, TC302,
TC303
BPF
ANT
TK-372G
Specifications/
Remark
Method
.
f : ([S E N S]) : [55]
L
. . .
f : (S E N S) : [125]
C
. . . . .
f : (S E N S ) : [190]
H
Adjust wave form
to figure 1.(f )
L
Check wave form to figure 2.(f )
C
Check wave form to figure 2.(f )
H
Fig. 2
Check 12dB SINAD or
more
Encoder Adjust to the
knob squelch
squelch. threshold point
Adjust to the
squelch
threshold point
Check Squelch must
be opened.
Squelch must
be closed.
41