Icom IC-7800 Instruction Manual - Page 23

1-13

!

6

ACCESSORY SOCKET 1 A [ACC 1

–

A]

!

7

ACCESSORY SOCKET 2 A [ACC 2

–

A]

!

8

ACCESSORY SOCKET 1 B [ACC 1

–

B]

!

9

ACCESSORY SOCKET 2 B [ACC 2

–

B]

Enable connection of external equipment such as a

linear

amplifier,

an

automatic

antenna

selector/tuner, a TNC for data communications, etc.

• See p. 2-10 for socket information.

@

0

ALC LEVEL ADJUSTMENT POT [ALC ADJ]

Adjusts the ALC levels.

No adjustment is required when the ALC output

level of the connected non-Icom linear amplifier is

0 to –4 V DC.

@

1

ALC INPUT JACK [ALC]

(p. 2-7)

Connects to the ALC output jack of a non-Icom lin-

ear amplifier.

@

2

T/R CONTROL JACK [RELAY]

(p. 2-7)

Goes to ground when transmitting to control an ex-

ternal unit, such as a non-Icom linear amplifier.

@

3

STRAIGHT KEY JACK [KEY]

(p. 2-4)

Accepts a straight key or external electronic keyer

with

1

²

4

inch standard plug.

• [ELEC-KEY] on the front panel can be used for a

straight key or external electronic keyer. Deactivate the

internal electronic keyer in keyer set mode. (p. 4-12)

@

4

EXTERNAL KEYPAD JACK [EXT KEYPAD]

(p. 2-6)

Connects an external keypad for direct voice mem-

ory or electronic keyer control.

Transceiver mute control line (both transmit and re-

ceive) is also supported.

@

5

METER JACK [METER]

(p. 2-6)

Outputs the receiving signal strength level signal,

transmit output power, VSWR, ALC, speech com-

pression, V

D

or I

D

level for external meter indication.

@

6

DC OUTPUT JACK [DC OUT]

(p. 2-6)

Outputs a regulated 14 V DC (approx.) for external

equipment. Connected in parallel with 13.8 V out-

puts of [ACC 1] and [ACC 2]. (max. 1 A in total)

@

7

REFERENCE SIGNAL INPUT/OUTPUT

TERMINAL [REF I/O]

Inputs/outputs a 10 MHz reference signal.

@

8

S/P DIF INPUT TERMINAL [S/P DIF

–

IN]

(p. 2-6)

@

9

S/P DIF OUTPUT TERMINAL [S/P DIF

–

OUT]

(p. 2-6)

Connects external equipment that supports S/P DIF

input/output.

#

0

CI-V REMOTE CONTROL JACK [REMOTE]

(p. 2-5)

➥

Connects a PC via the optional CT-17

CI

-

V LEVEL

CONVERTER

for external control of the transceiver.

➥

Used for transceive operation with another Icom

CI-V transceiver or receiver.

#

1

RS-232C TERMINAL [RS-232C]

(p. 2-5)

Connects an RS-232C cable, D-sub 9-pin to con-

nect the IC-7800 to a PC.

Can be used for remotely control the IC-7800 with-

out the optional CT-17, or for RTTY/PSK31 de-

coded signal output. The [RS-232C] interface is

wired as a modem (DCE).

#

2

KEYBOARD CONNECTOR [KEYBOARD]

(p. 2-6)

Connects a PC keyboard for RTTY and PSK31 op-

erations.

• USB (Universal Serial Bus) keyboard is supported.

#

3

EXTERNAL DISPLAY TERMINAL

[EXT-DISPLAY]

(p. 2-6)

Connects to an external display monitor.

• At least 800

×

600 pixel display is necessary.

#

4

ETHERNET CONNECTOR

(p. 16-6)

Connects to a PC through a LAN (Local Area Net-

work).

+

_

_

(

+

)

(

_

)

NOTE:

T/R control voltage and current must be

lower than 16 V DC/0.5 A (or 250 V AC,

200 mA with MOS-FET switching).

1

PANEL DESCRIPTION

Icom IC-7800 Instruction Manual - Page 23

S/p Dif Input Terminal [s/p Dif - computer interface

Page 23 highlights