ICOM IC-756PRO2 Manuale Utente

13

2

PANEL DESCRIPTION

!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.

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. 66)

1

2

3

4

5

6

7

8

“High” level

: More than 2.4 V

1

RTTY Controls RTTY keying

“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.

Input/output pin.

Ground level

: –0.5 V to 0.8 V

3

SEND Goes to ground when transmitting.

Output current

: Less than 20 mA

When grounded, transmits.

Input current (Tx)

: Less than 200 mA

Connected in parallel with ACC(2) pin 3.

4

MOD

Modulator input.

Input impedance

: 10 k

Ω

Connects to a modulator.

Input level

: Approx. 100 mV rms

AF detector output.

Output impedance : 4.7 k

Ω

5

AF

Fixed, regardless of [AF] position

Output level

: 100–300 mV rms

in default settings. (see notes below)

6

SQLS

Squelch output.

SQL open

: Less than 0.3 V/5 mA

Goes to ground when squelch opens.

SQL 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.

Control voltage

: –4 V to 0 V

8

ALC

ALC voltage input.

Input impedance

: More than 10 k

Ω

Connected in parallel with ACC(2) pin 5.

1

2

3

4

5

6

7

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.

Output voltage

: 0 to 8.0 V

(Varies with amateur band)

5

ALC

Same as ACC (1) pin 8.

6

TRV

Activates [XVERT] input/output

Input impedance

: More than 10 k

Ω

when “HIGH” voltage is applied.

Input voltage

: 2 to 13.8 V

7

13.8 V

Same as ACC(1) pin 7.

Rear panel view

Rear panel view