Kenwood TK-378G, Service Manual

Page: 18 / 31

TK-378G
18
Item Condition
Measurement Adjustment
Specifications/
Test equipment Terminal Parts Method
Remark
ADJUSTMENT
Receiver Section
Fig. 1 BPF-WAVE
M type
1. BPF TEST CH : RX Center Tracking generator ANT TC301, TC302, Adjust wave form to figure 1.
Adjustment Tra-G setting -40dBm Spectrum analyzer BPF TC303
2. Sensitivity 1) TEST CH : RX Center SSG ANT
Check SSG OUT AF VTVM Check 12dB SINAD or
Wide:-118dBm (0.28µV) Oscilloscope more
(MOD:1kHz / ±3kHz)
Narrow:-117dBm (0.316µV)
(MOD:1kHz / ±1.5kHz)
3. Squelch (Open) 1) TEST CH : RX Center PC key Adjust to the
Adjust SSG OUT: squelch
(PC MODE) -123dBm (0.158µV) threshold point
[Wide]
2) TEST CH : RX Center
[Narrow] SSG OUT:
-122dBm (0.178µV)
4. Squelch(Tight) 1) TEST CH : RX Center Adjust to the
Adjust SSG OUT:-116dBm (0.35µV) squelch
(PC MODE) threshold point
[Wide]
[Narrow] 2) TEST CH : RX Center
SSG OUT:-115dBm (0.398µV)
5. Squelch 1) TEST CH : RX Center Check Squelch must
Check SQ Level : [SQL5] be opened.
(PC MODE) SSG OUT:
-118dBm (0.28µV)
2) SSG OUT:OFF Squelch must
be closed.