TK-8100H
32
ADJUSTMENT
Receiver Section
1. Seisitivity
1) CH : RX low (Wide/Narrow)
SSG
ANT
Check
SINAD
CH : RX center (Wide/Narrow)
Oscilloscope
EXT. SP
: 12dB or higher
CH : RX high (Wide/Narrow)
AF V.M
2) SSG output
Distortion meter
: –118dBm (0.28
µ
V) (Wide)
: –116dBm (0.35
µ
V) (Narrow)
Mod : 1kHz
Dev :
±
3.0kHz (Wide)
Dev :
±
1.5kHz (Narrow)
2. Squelch 9 1) CH : RX low (Wide)
PC key
Adjust to open the squelch
CH : RX center (Wide/Narrow)
CH : RX high (Wide)
2) SSG output
: –115dBm (0.4
µ
V) (Wide)
: –114dBm (0.45
µ
V) (Narrow)
Mod : 1kHz
Dev :
±
3.0kHz (Wide)
Dev :
±
1.5kHz (Narrow)
3. Squelch 1 1) CH : RX low (Wide)
CH : RX center (Wide/Narrow)
CH : RX high (Wide)
2) SSG output
: –120dBm (0.22
µ
V) (Wide)
: –119dBm (0.25
µ
V) (Narrow)
Mod : 1kHz
Dev :
±
3.0kHz (Wide)
Dev :
±
1.5kHz (Narrow)
PCB Section
1. Setting
1) Power supply voltage
DC Power supply terminal : 13.6V
2. VCO lock
1) CH : TX high
Digital voltmeter
CV
TC402
5.5V
±
0.1V
voltage*
2) CH : RX high
TC401
5.5V
±
0.1V
3) CH : TX low
Check
0.7V or more
4) CH : RX low
3. IF coil
1) CH : RX center (Wide)
SSG
AFV
L301
3.25~3.35V (DC)
2) SSG output : –53dBm (501
µ
V)
Digital voltmeter
Mod : 1kHz, Dev : 3kHz
4. RF
1) CH : RX center (Wide)
Tra generator
ANT
TC352
Adjust the BPF waveform
bandpass
CH : RX low (Wide)
Spectrum analyzer
BPF
TC353
to Fig. 1
filter
CH : RX high (Wide)
2) Tra generator output : –30dBm
Connect the spectrum analyzer
to BPF terminal
* Adjustment of TX VCO lock voltage
1. Remove R525, F501, R536 and R822 (all on component side).
2. Remove PCB from chassis.
3. Transmit and check voltage at [CV] point.
Warning :
Do not transmit if step “1.” is not complete.
4. Adjust of voltage can be done by tuning TC402.
Item
Condition
Test equipment
Terminal
Parts
Method
Specifications/
Remarks
Measurement
Adjustment
Fig. 1
Item
Condition
Test equipment
Terminal
Parts
Method
Specifications/
Remarks
Measurement
Adjustment