16 CONNECTING PERIPHERAL EQUIPMENT

MCP AND TNC

Use the ACC 2 connector to connect the input/output lines from a Terminal Node Controller (TNC) for Packet operation, a Multimode Communications Processor (MCP) for operation on Packet, PacTOR, AMTOR, G-TORTM, PSK31, or FAX, or from a Clover interface. Also use the ACC 2 connector to connect SSTV and phone patch equipment (1 male ACC2 connector (E07-1351-XX) is supplied).

•Connect the TNC or MCP to the ACC 2 connector using a cable equipped with a 13-pin DIN plug.

•Connecting the TNC or MCP to a personal computer or dumb terminal requires an RS-232C cable.

Note: Do not share a single power supply between the transceiver and the TNC or MCP. Keep as wide a separation as possible between the transceiver and the computer to reduce noise-pickup by the transceiver.

13

9 10 11 12

5 6 7 8

1 2 3 4

ACC2 Front view (Rear panel)

Pin No.

Pin

Function

Name

 

 

 

 

AF output from the sub-receiver

 

 

• Connect to the TNC or MCP receive data pin for digital operation.

1

SANO

• AF output level is independent from SUB AF control setting.

 

 

• AF output level can be changed by adjusting the Menu No. 50D value.

 

 

• Output impedance: Approx. 10kΩ.

 

 

 

2

RTTY

RTTY key input

 

 

 

 

 

AF output from the main transceiver

 

 

• Connect to the TNC or MCP receive data pin for digital operation.

3

MANO

• AF output level is independent from the MAIN AF control setting.

 

 

• AF output level can be changed by adjusting the Menu No. 50C value.

 

 

• Output impedance: Approx. 10kΩ.

 

 

 

4

GND

Ground

 

 

 

 

 

Main transceiver squelch control

 

 

• Connect to the TNC or MCP squelch control pin for digital operation.

5

MSQ

• Prevents the TNC from transmitting while the transceiver squelch is open.

 

 

• Squelch open: Low impedance

 

 

• Squelch closed: High impedance

 

 

 

6

NC

No connection

 

 

 

 

 

Sub-receiver squelch control

 

 

• Connect to the TNC or MCP squelch control pin for digital operation.

7

SSQ

• Prevents the TNC from transmitting while the transceiver squelch is open.

 

 

• Squelch open: Low impedance

 

 

• Squelch closed: High impedance

 

 

 

8

GND

Ground

 

 

 

 

 

Transceiver PTT line control

9

PKS

• Ground this terminal to transmit.

• Connect to the TNC or MCP transmit/ receive switching pin for digital operation.

 

 

 

 

• Microphone audio input mutes when the transceiver transmits.

 

 

 

10

NC

No connection

 

 

 

11

PKD

Microphone audio input

• Connect to the TNC or MCP transmit data pin for digital operation.

 

 

 

 

 

12

GND

Ground

 

 

 

 

 

PTT control

13

SS

• Ground this terminal to transmit.

• For connecting a footswitch or other external controller (in parallel with MIC jack).

 

 

 

 

• Microphone audio input does NOT mute when the transceiver transmits.

 

 

 

95