Kenwood TKR-740 Service Manual page 78

TX UNIT
Item Condition
33.Repeat 1) CH4 (Center Frequency)
Gain Level M OD : 1kHz
Adjust DEV : 1kHz
(Wide) LEVEL : 501µV (–53dBm)
LPF : 15kHz
HPF : OFF
Transmission
(Narrow ) 1) CH10 (Center Frequency)
M OD : 1kHz
DEV : 1kHz
LEVEL : 501µV (–53dBm)
Transmission
34.Pager 1) CH2 (VCO-A Center)
Shift Level
Writing
35.Pager 1) CH2 (VCO-A Center)
Waveform 2) CH5 (VCO-B Center)
Balance LPF : 3kHz
Adjust HPF : OFF
Transmission
36.TX S/N 1) CH2 (VCO-A Center)
Check 2) CH5 (VCO-B Center)
(Wide) No modulation
LPF : 3kHz
HPF : 300Hz
De-emphasis : 750µS
Transmission
(Narrow ) 3) CH8 (VCO-A Center)
4) CH11 (VCO-B Center)
Transmission
ADJUSTMENT
M easurement
Test
Unit Terminal Unit Parts
equipment
M OD ANA TX TX OUT
Oscilloscope A/3
CONTROL I/O
TA Terminal
(pin 9)
TKR-740
Adjustment
Specifications/
M ethod Remarks
PC ADJ
1kHz ± 0.2kHz
PC ADJ
1kHz ± 0.2kHz
PC ADJ 102
w riting
M ake the demodulated
w ave square
Oscilloscope
DC range
Check –54dB or less
–53dB or less
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