5-3 SOFTWARE ADJUSTMENT

Select an operation using [] / [] keys, then set specified value using [

] / [] keys on the connected computer keyboard.

 

 

 

 

 

 

 

 

 

 

 

ADJUSTMENT

 

ADJUSTMENT CONDITION

 

 

MEASUREMENT

 

 

VALUE

 

 

 

 

 

 

 

 

 

UNIT

 

LOCATION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REFERENCE

1

• Operating frequency:

 

Top

Loosely

couple a

frequnecy

470.0000 MHz

FREQUENCY

 

 

470.000 MHz

 

panel

counter to the antenna connec-

 

[TXF]

 

• High/Low switch

: Low

 

 

tor.

 

 

 

 

 

 

 

• Connect the RF power meter or 50

 

 

 

 

 

 

 

 

 

 

dummy load to the antenna connector.

 

 

 

 

 

 

 

 

 

 

• Transmitting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTPUT

1

• Operating frequency:

 

Top

Connect an RF power meter to

4.0 W

POWER

 

 

440.000 MHz

 

panel

the antenna connector.

 

[POWER(Hi)]

 

• High/Low switch

: High

 

 

 

 

 

 

 

 

 

 

• Transmitting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[POWER(L2)]

2

• High/Low switch

: Low2

 

 

 

 

 

 

2.0 W

 

 

 

• Transmitting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[POWER(L1)]

3

• High/Low switch

: Low1

 

 

 

 

 

 

1.0 W

 

 

 

• Transmitting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FM

1

• Operating frequency:

 

Top

Connect an FM deviation meter

±4.10 kHz

DEVIATION

 

 

455.000 MHz

 

panel

to the

antenna

connector

 

(Wide)

 

• High/Low switch

: Low1

 

 

through the attenuator.

 

[MOD W]

 

• Channel spacing

: Wide

 

 

 

 

 

 

 

Connect the audio generator to the [MIC] jack and set as:

1.0kHz/150 mVrms

Set the FM deviation meter as:

 

 

HPF

:

OFF

 

 

 

 

 

 

 

LPF

:

20 kHz

 

 

 

 

 

 

 

De-emphasis

: OFF

 

 

 

 

 

 

 

Detector

: (P–P)/2

 

 

 

 

 

 

 

• Transmitting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Narrow)

2

• Channel spacing

: Narrow

 

 

±2.10 kHz

[MOD N]

 

• Transmitting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DTCS WAVE

1

• Operating frequency:

 

Top Connect an FM deviation meter

Set to flat wave

FORM

 

 

455.000 MHz

panel with an oscilloscope to the

form

[DTCS BAL]

 

• High/Low switch

: Low1

antenna connector through an

 

 

 

 

 

 

• No audio applied to the [MIC] jack.

attenuator.

 

 

 

 

 

 

• DTCS code : 007

 

 

 

 

 

 

 

 

 

• Transmitting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Icom IC-F21S service manual Software Adjustment