Kenwood TS-2000X, TS-B2000 instruction manual MCP and TNC, Pin No Function

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.

•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.

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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. 10 kΩ.
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. 10 kΩ.
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.

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