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D-SUB 25-PIN (OPC-2407) INTERFACE INFORMATION
OPC-2407
D-Sub 25-pin
D-Sub 25-pin
Pin
number Pin name
Description
Specification
13...........................1
25........................14
Pin position
1
NC
No connection
–
2
TXD
Serial communication output. (RS-232)
3
RXD
Serial communication input. (RS-232)
4
RTS
Serial Request-To-Send (RTS) signal input. (RS-232)
5
CTS
Serial Clear-To-Send (CTS) signal output. (RS-232)
6
NC
No connection
7
GND
Ground terminal for transceiver.
8
EXMOD
External microphone audio input port.
9
DISC
Detected audio output port. (analog)
10
Ext. O 10
Customizable output
*
by transceiver programming.
Active is fixed at the
low level.
11
VCC
The DC power supply voltage output terminal through the
main power switch circuit.
Output level: 13.8 V
12
NC
No connection
–
13
14
AGND
Ground terminal for transceiver’s analog signal.
15
Ext. I/O 15
Customizable I/O
*
†
by transceiver programming.
Active can be set to the
high or low levels.
16
NC
No connection
–
17
Ext. I/O 17
Customizable I/O
*
†
by transceiver programming.
Active can be set to the
high or low levels.
18
Ext. I/O 18
19
Ext. I/O 19
20
NC
No connection
–
21
Ext. I/O 21
Customizable I/O
*
†
by transceiver programming.
Active can be set to the
high or low levels.
22
AFO
Audio (AF preamplifier) output related to the volume
setting.
–
23
Ext. I/O 23
Customizable I/O
*
†
by transceiver programming.
Active can be set to the
high or low levels.
24
Ext. I 24
Customizable input
†
by transceiver programming.
Active is fixed at the
high level
.
25
Ext. I/O 25
Customizable I/O
*
†
by transceiver programming.
Active can be set to the
high or low levels.
*
Customize output: [Busy], [Audible], [Mic Mute], [Hanger], [PTT], [TX], [Horn]
,
[P1 Monitor], [P2 Monitor], [P3 Monitor],
[AUX1], [AUX2], [AUX3], [AUX4], and [ID List Select Mode]
†
Customize input: [ID List Select 1], [ID List Select 2], [ID List Select 3], [ID List Select 4], [EPTT], [Mic Mute], [Dimmer], and
[Ext. Key]