TH-K20A/K20E
20
ADJUSTMENT
Common Section
Item
Condition
Measurement
Adjustment
Specifi cations / Remarks
Test-
equipment
Unit
Terminal
Unit
Parts
Method
1. Setting
1) BATT terminal voltage: 7.5V
2) SSG standard modulation
[Wide]
MOD: 1kHz, DEV: 3kHz
[Narrow]
MOD: 1kHz, DEV: 1.5kHz
2. VCO Lock
Voltage
1) Adj item: High
Power
meter
TX-RX ANT
(CV)
MCP-
5T
4.0V
[V] indicator on the
PC window shows
VCO lock voltage.
Change the adjust-
ment value to get
VCO lock voltage
within the limit of the
specifi ed voltage.
±0.1V
Press [Apply] button to store
the adjustment value.
Note:
• Press [Apply] button to store the adjustment value. (For single adjustment point)
• Press [Apply All] button to store the adjustment value after all adjustment points have been adjusted. (For 3 adjustment point)
Transmitter Section
Item
Condition
Measurement
Adjustment
Specifi cations / Remarks
Test-
equipment
Unit
Terminal
Unit
Parts
Method
1. Frequency
1) Tuning point: High
Press [Transmit] button.
f. counter
TX-RX ANT
MCP-
5T
173.900MHz
±50Hz
2. High
Transmit
Power
and
Protective
Current
1) Tuning point: Low, Center,
High (3 points)
BATT terminal voltage: 7.5V
Press [Transmit] button.
Power
meter
Ammeter
MCP-
5T
5.5W
±0.1W
2.0A or less
3. Low
Transmit
Power
1) Tuning point: Low, Center,
High (3 points)
BATT terminal voltage: 7.5V
Press [Transmit] button.
1.0W
±0.1W
1.0A or less
4. Mid
Transmit
Power
1) Tuning point: Low, Center,
High (3 points)
BATT terminal voltage: 7.5V
Press [Transmit] button.
2.0W
±0.1W
1.5A or less
5. DCS
Balance
[Wide]
1) Tuning point: Low, Center,
High (3 points)
(Signaling
Square
Wave)
Deviation meter fi lter
LPF: 3kHz
HPF: OFF
Press [Transmit] button.
Power
meter
Deviation
meter
Oscilloscope
AG
AF VM
TX-RX ANT
SP/MIC
connector
MCP-
5T
Make the modulation
wave into square
waves.
6. Maximum
Deviation
[Wide]
1) Tuning point: Center, Low,
High (3 points)
AG:
1kHz/150mV
Deviation meter fi lter
LPF: 15kHz
HPF: OFF
Press [Transmit] button.
4.0kHz
(According to
the , –)
±100Hz
Содержание TH-K20A
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