Kenwood TKR-750 Service Manual page 43

Item Condition
27. Test tone 1) VCO-A CH (TX VCO A center) MOD ANA Rear
deviation VCO-B CH (TX VCO B center) or
(Wide) Deviation meter filter
HPF : OFF
LPF : 15kHz
De-emphasis : OFF
Transmission
(Narrow) 2) VCO-A CH (TX VCO A center)
VCO-B CH (TX VCO B center)
Transmission
28. TA (TX 1) Insert AG output into the
audio input) control I/O TA terminal (pin 9). or
deviation VCO-A CH (TX VCO A center) Deviation
(Wide) VCO-B CH (TX VCO B center) meter
Deviation meter filter
HPF : OFF
LPF : 15kHz
De-emphasis : OFF
AG freq' : 1kHz (Sine wave)
AG level : 280mV
Transmission
(Narrow) 2) VCO-A CH (TX VCO A center)
VCO-B CH (TX VCO B center)
Transmission
29. TD 1) Insert AG output into the
deviation control I/O TD terminal (pin 8). or
(Wide) VCO-A CH (TX VCO A center) Deviation
VCO-B CH (TX VCO B center) meter
Deviation meter filter
HPF : OFF
LPF : 3kHz
De-emphasis : OFF
AG freq' : 100Hz (Sine wave)
AG level : 0.5Vp-p (177mVrms)
Transmission
(Narrow) 2) VCO-A CH (TX VCO A center)
VCO-B CH (TX VCO B center)
Transmission
30. Repeat 1) VCO-A CH (TX VCO A center) SSG
gain level VCO-B CH (TX VCO B center)
(Wide) SSG output : –53dBm
SSG MOD : 1kHz
SSG DEV : 1kHz
Deviation meter filter
HPF : OFF
LPF : 15kHz
De-emphasis : OFF
Transmission
(Narrow) 1) VCO-A CH (TX VCO A center)
VCO-B CH (TX VCO B center)
Transmission
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
TX ANT
Deviation
meter
Oscilloscope
AG Front MIC
AF VTVM
MOD ANA Rear TX ANT
Oscilloscope
AG CONTROL
AF VTVM I/O jack
TA (pin 9)
MOD ANA Rear TX ANT
Oscilloscope
AG CONTROL
AF VTVM I/O jack
TD (pin 8)
Rear RX ANT
MOD ANA TX ANT
or
Deviation
meter
Oscilloscope
TKR-750
Adjustment
Parts Method
± 0.1kHz
PC adj.
3kHz
± 0.05kHz
PC adj.
1.5kHz
± 0.1kHz
PC adj.
3.0kHz
± 0.05kHz
PC adj.
1.5kHz
± 0.1kHz
PC adj.
0.75kHz
± 0.05kHz
PC adj.
0.35kHz
± 0.1kHz
PC adj.
1kHz
Specifications/Remarks
45