background image

ADJUSTMENT PROCEDURES

PLL ADJUSTMENT for IC-F4TR

UNIT

LOCATION

UNIT ADJUST

PLL LOCK

1 Operating freq:

MAIN Connect a multimeter

1.3 V

MAIN L11

VOLTAGE

  480.000 MHz

to check point CP1.

Receiving

2 Operating freq:

L405

  480.000 MHz
Transmitting

3 Operating freq:

3.5V-

Verify

  512.000 MHz

  4.5V

Receiving

4 Operating freq:

  512.000 MHz
Transmitting

ADJUSTMENT

ADJUSTMENT ADJUSTMENT CONDITIONS

MEASUREMENT

VALUE

Содержание IC-F4TR

Страница 1: ...eq MAIN Connect a multimeter 1 3 V MAIN L11 VOLTAGE 480 000 MHz to check point CP1 Receiving 2 Operating freq L405 480 000 MHz Transmitting 3 Operating freq 3 5V Verify 512 000 MHz 4 5V Receiving 4 Operating freq 512 000 MHz Transmitting ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITIONS MEASUREMENT VALUE ...

Страница 2: ...an RFpower Maximum output Adjust C467 on meter to the ante the MAIN unit nna connector see detailed illustration at right 3 Operating freq 4 2 W push up or down 500 000 MHz keys on the com High Low switch High puter key board Transmitting 4 High Low switch Low 0 5W 2 0W Verify Transmitting BPF1 BPF4 1 Operating freq Top Connect an SSG to Minimum distor push up or down 480 000 MHz panel the antenna...

Страница 3: ... an attenuator FM 1 Operating freq Top Connect an FM devia 3 5kHz MAIN R564 DEVIATION 500 000 MHz panel tion meter to the Wide Narrow switch Wide antenna connector Connect an audio genera through sn attenuator tor to the MIC jack and set as 1kHz 100mV Set an FM deviation meter as HPF OFF LPF 20kHz De emphasis OFF Detector P P 2 Transmitting ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITIONS MEASUREMENT V...

Страница 4: ... panel the antenna connector level Wide Narrow switch Wide and SINAD meter with Set the SSG as an 8ohm load to the Modulation 1kHz antenna connector Deviation 3 0kHz Receiving 2 Turn R92 clockwise to At the point MAIN R92 close squelch where the au Receiving dio signals just appears ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITIONS MEASUREMENT VALUE ...

Отзывы: