Kenwood TM-255E Bedienungsanleitung PDF herunterladen (Seite 13)

1 INSTALLATION AND CONNECTION

■ DATA Connector Pinout

Pin No.

Pin Name

Function

1 PKD

Packet Data (input)

• Transmit data from TNG to transceiver

2 DE

Data Earth

• Ground for TNG output

3 PKS 1

Packet Standby

• TNG can use this pin to inhibit the transceiver microphone input while transmitting

packet signals.

PR9

FM Demodulator Output

• For 9600 bps Packet operation

• Output Level: 500 mVp-p/10 kQ

PR1

Demodulator Output

• For 1200 bps Packet and RTTY operation

• Audio output is taken before the VOL control

(VOL control has no effect on audio level)

• Output level: 300 mVp-p/10 kO

6 SQC

Squelch Control or Relay Output ^

Squelch Control

• Inhibits TNG data transmit while transceiver squelch is open. This prevents

interference to voice communications on the same frequency and unwanted retries.

• Output level

Squelch open: +5 V (HIGH)

Squelch closed: 0 V (LOW)

Relay Output

• Alternatively, provides a relay output for accessories such as a linear amplifier.

• The output switches to GND during transmit.

• Current rating: 500 mA maximum

■' It is not necessary to disconnect the microphone if using the DATA connector. The TNG drives this pin LOW which mutes

the microphone.

2 Switch selectable: Set internal switch to "PSQ" for Squelch Control or "RL" for Relay Output {page 47}.

Transceiver

rear panel

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Kenwood TM-255E Bedienungsanleitung Seite 13