Connector Description - Icom IC-FR5100 Series Handbook

4-1-3
Accessory connector
Pin No. Pin Name
1 NC No connection
2 TXD
Output terminal for serial communication data.
3 RXD Input terminal for serial communication data.
4 RTS Output terminal for request-to-send data.
5 CTS Input terminal for clear-to-send data.
6 NC No connection
7 GND
Serial/digital signal ground
8 MOD IN Modulator input from an external terminal unit.
Output terminal for AF signals from the AF detector circuit.
9 DISC OUT
Output level is fixed, regardless of [AF] control.
The desired function can be assigned.*
10 EXT. D/A
(Default: Null)
11 VCC 13.6 V DC output
12 EXT. A/D Customize A/D input (Not used)
13 NC No connection
14 GND Ground
The desired function can be assigned.*
15 EXT.I/O 15
(Default: Null)
The desired function can be assigned.*
16 EXT.I/O 16
(Default: P0 Monitor Output)
The desired function can be assigned.*
17 EXT.I/O 17
(Default: Busy Output)
The desired function can be assigned.*
18 EXT.I/O 18
(Default: Null)
The desired function can be assigned.*
19 EXT.I/O 19
(Default: EPTT Input)
20 DATA IN
Input terminal for data.
The desired function can be assigned.*
21 EXT.I/O 21
(Default: analogue Audible Output)
22 AF OUT The AF detector Output.
The desired function can be assigned.*
23 EXT.I/O 23
(Default: Mic Mute Output)
The desired function can be assigned.*
24 EXT.I/O 24
(Default: Null)
The desired function can be assigned.*
25 EXT.I/O 25
(Default: Mic Hanger Output)
* The desired function can be assigned using the optional CS-FR5100 cloning software. Ask your dealer for details.

Connector Description

Description Specification
—
—
—
—
—
—
—
Input level: 300 mV rms
Output level: 300 mV rms
—
Output current: Less than 1 A
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—
—
+5 V pull up, Active=L
+5 V pull up, Active=L
+5 V pull up, Active=L
+5 V pull up, Active=L
+5 V pull up, Active=L
—
+5 V pull up, Active=L
—
+5 V pull up, Active=L
+5 V pull up, Active=L
+5 V pull up, Active=L
23