Alinco DR-435T - Page 38

8. PACKET OPERATION
[To operate packet using an external TNC]
Use the DSUB-9 connector to connect the radio and the PC. The pin allocation for the DSUB-9 on
the back of the unit is as follows:
Transceiver
1200 bps
FM Packet TNC
DATA DATA
GND IN. OUT. PTT
7 © © 9
Packet RX OUT
| 1200 bps RS-232C
Packet TX IN
1200 bps
EXT, PTF tnput
Personal Computer
9600 bps
FM Packet TNC
DATA DATA
GND IN OUT PITT
5 © © 9
Packet RX OUT 9600 bps
Packet TX IN 9600 bps
Personal Computer
1. SQC squelch signal output. Carrier in: closed. Open collector output.
2. Packet reception DATA output (9600bps) output level 500mVims/10Kohm
3. Packet transmission DATA input (9600bps) input level 300mV/600ohm Max input level 600mV.
4. Packet reception DATA output (1200bps) output level 100mV/6000hm
5. Ground
6. No Connection
7. PTT signal input : Low (GND) : TX, Open: RX
8. 5.0Vdc output: Max current less than S0mA
9. Packet transmission DATA input (1200bps): input level 100mV/6000hm
Pin numbering
looking at rear of radio
36