Kenwood TK-7160 Service Manual page 30

TK-7160/7162
3 or 5 Reference Level Adjustment Frequency
Tuning point
Low
Low'
Center
High'
High
PCB Section
Item
1. Setting 1) Power supply voltage
DC Power supply terminal : 13.6V
2. VCO lock 1) CH : TX high
voltage
2) CH : RX high
3) CH : TX low
4) CH : RX low
3. IF coil 1) CH : RX center (Wide)
2) SSG output : –53dBm (501µV)
Mod : 1kHz, Dev : 3kHz
4. RF 1) CH : RX center (Wide)
bandpass CH : RX low (Wide)
filter CH : RX high (Wide)
2) Tra generator output : –30dBm
Connect the spectrum analyzer
to BPF terminal
Receiver Section
Item
1. Seisitivity 1) CH : RX low
(Wide/Wide 4k/Narrow)
CH : RX center
(Wide/Wide 4k/Narrow)
CH : RX high
(Wide/Wide 4k/Narrow)
2) SSG output
: –118dBm (0.28µV)
(Wide/Wide 4k)
: –116dBm (0.35µV) (Narrow)
Mod : 1kHz
Dev : ± 3.0kHz (Wide)
Dev : ± 2.4kHz (Wide 4k)
Dev : ± 1.5kHz (Narrow)
30
ADJUSTMENT
RX (MHz) TX (MHz)
136.05 136.10
145.55 145.60
155.05 155.10
164.55 164.60
173.95 173.90
Condition
Test equipment
Digital voltmeter
SSG
Digital voltmeter
Tra generator
Spectrum analyzer
Condition
Test equipment
SSG
Oscilloscope
AF V.M
Distortion meter
Ref –20 dBm
Peak
Log
10
dB/
W1 S2
S3 FC
AA
Center 160.1 MHz
#Res BW 30 kHz
Measurement
Terminal Parts
CV TC442
TC441
AFV L321
ANT PC key
BPF
Measurement
Terminal Parts
ANT
EXT. SP
Atten 0 dB
136.1MHz 155.1MHz
174.0MHz
–40.5dBm –40.58dBm
–42.81dBm
Sweep 277.8 ms (401 pts)
VBW 30 kHz
Fig. 1
Adjustment
Specifications/
Method
± 0.1V
5.5V
± 0.1V
5.5V
Check 0.7V or more
3.25~3.35V (DC)
Adjust the BPF waveform
to Fig. 1
Adjustment
Specifications/
Method
Check SINAD
: 12dB or higher
Span 100 MHz
Remarks
Remarks