Kenwood TM-D710A, Service Manual

Page: 40 / 97

TM-D710A/D710E
40
ADJUSTMENT
Item Condition
Measurement Adjustment
Specifi cations / Remarks
Test-
equipment
Unit Terminal Unit Parts Method
6. SWR
protection
Adjust
• 144MHz band 1) Adj item: [SWR V]
Adjust: [ ***
]
2) PTT: ON
Power meter TX/RX
unit
(Rear)
ANT Operation
panel
(Front) Tuning
control Set the following adjustment values to the
transceiver by turning the Tuning control.
∗
When the transceiver is shipped, the SWR
adjustment value is different from that which
is stated in this manual, as SWR protection
adjustment is performed at production.
Although there is a difference in the numerical
value, this does not pose a problem, as the
adjustment value provided in this manual is the
mean value.
Adjustment value: 66
• 430MHz band 3) Adj item: [SWR U]
Adjust: [ ***
]
4) PTT: ON
Adjustment value:
120
7. DCS balance
(Band A)
Adjust
• 144MHz band 1) Adj item: [BAL A VC]
Adjust: [
***
]
Detector: +P HOLD
LPF: 3kHz
HPF: OFF
De-emphasis: OFF
2) PTT: ON
Linear
detector
Oscilloscope By turning the Tuning
control, adjust the
modulation wave
until it becomes the
square wave.
• 430MHz band 3) Adj item: [BAL A UC]
Adjust: [ ***
]
4) PTT: ON
8. DCS balance
(Band B)
Adjust
• 144MHz band 1) Adj item: [BAL B VC]
Adjust: [ ***
]
Detector: +P HOLD
LPF: 3kHz
HPF: OFF
De-emphasis: OFF
2) PTT: ON
• 430MHz band 3) Adj item: [BAL B UC]
Adjust: [
***
]
4) PTT: ON
9. MAX
deviation
(Band A)
Adjust
• 144MHz band 1) Adj item: [DEV A V]
Adjust: [
***
]
AG: 1kHz/50mV K,M4
AG: 1kHz/20mV E
Detector: +P, –P
LPF: 15kHz
HPF: OFF
De-emphasis: OFF
2) PTT: ON
Linear
detector
Oscilloscope
AG
AF V.M ANT
MIC Write 4.2kHz±0.1kHz (According to
the P, –P)
• 430MHz band 3) Adj item: [DEV A U]
Adjust: [ ***
]
4) PTT: ON
10. MAX
deviation
(Band B)
Adjust
• 144MHz band 1) Adj item: [DEV B V]
Adjust: [ ***
]
AG: 1kHz/50mV K,M4
AG: 1kHz/20mV E
Detector: +P, –P
LPF: 15kHz
HPF: OFF
De-emphasis: OFF
2) PTT: ON
• 430MHz band 3) Adj item: [DEV B U]
Adjust: [
***
]
4) PTT: ON
Note:
D o n o t u s u a l l y a d j u s t t h e S W R
protection adjustment; adjust it only
when you replace the EEPROM
.