ICOM ic-756pro ユーザーズマニュアル

!2

!3

ANTENNA CONNECTOR 2 [ANT2] (pgs. 14, 15)
Accept a 50 

Ω

antenna with a PL-259 connector.

When using an optional AH-4 

HF/50 MHz AUTO-

MATIC ANTENNA TUNER

or AH-3 

HF AUTOMATIC AN-

TENNA TUNER

, connect it to the [ANT1] connector.

The internal antenna tuner activates for [ANT2] and
deactivates for [ANT1] when connecting the AH-4 or
AH-3.

D

!4

GROUND TERMINAL  [GND]  (pgs. 14, 15)
Connect this terminal to a ground to prevent electri-
cal shocks, TVI, BCI and other problems.

13

2

PANEL DESCRIPTION

1

RTTY

Controls RTTY keying.

“HIGH” level

: More than 2.4 V

“LOW” level

: Less than 0.6 V

Output current

: Less than 2 mA

2

GND

Connects to ground.

Connected in parallel with ACC(2) pin 2.

3

SEND

Input/output pin.
Goes to ground when transmitting.
When grounded, transmits.

Ground level

: –0.5 V to 0.8 V

Output current

: Less than 20 mA

Input current (Tx)

: Less than 200 mA

Connected in parallel with ACC(2) pin 3.

4

MOD

Modulator input.
Connects to a modulator.

Input impedance

: 10 k

Ω

Input level

: Approx. 100 mV rms

5

AF

AF detector output.
Fixed, regardless of [AF] position in
default settings. (see notes below)

Output impedance : 4.7 k

Ω

Output level 

: 100 to 300 mV rms

6

SQLS

Squelch output.
Goes to ground when squelch
opens.

Squelch open 

: Less than 0.3 V/5 mA

Squelch closed 

: More than 6.0 V/100 µA

7

13.8 V

13.8 V output when power is ON.

Output current 

: Max. 1 A

Connected in parallel with ACC(2) pin 7.

8

ALC

ALC voltage input.

Control voltage 

: –4 to 0 V

Input impedance 

: More than 10 k

Ω

Connected in parallel with ACC(2) pin 5.

Rear panel

view

1

2

3

4

5

6

7

8

1

8 V

Regulated 8 V output.

Output voltage 

: 8 V ±0.3 V

Output current 

: Less than 10 mA

2

GND

Same as ACC(1) pin 2.

3

SEND

Same as ACC(1) pin 3.

4

BAND

Band voltage output.
(Varies with amateur band)

Output voltage 

: 0 to 8.0 V

5

ALC

Same as ACC(1) pin 8.

6

TRV

Activates [XVERT] input/output
when “HIGH” voltage is applied.

7

13.8 V

Same as ACC(1) pin 7.

Rear panel

view

1

2

3

4

5

6

7

Input impedance

: More than 10 k

Ω

Input voltage 

: 2 to 13.8 V

If the CW side tone level limit or beep level limit is in
use, the CW side tone or beep tone decreases from
the fixed level when the [AF] control is rotated above
a specified level, respectively. (p. 65)