Kenwood NX-700 Instruction Manual page 4

Terminal Descriptions
Microphone Jack
Pin No. Pin Name
1 BLC
2 SB
3 GND
4 PTT/ TXD
5 ME
6 MIC
7 HOOK/ RXD
8 DM
ACC (D-SUB 25 Pin Connector)
Pin No. Pin Name
2 RXD1
3 TXD1
5 DI
6 MI2
7 GND
9 TXD2
10 RXD2
11 GND
18 GND
25 ME
Antenna Terminal
Impedance is 50 
Description
Mic key backlight control
Power Output
Ground
PTT Input/Serial Data Output
MIC Ground
MIC Signal Input
Hook Detection/ Serial Data Input
MIC Data Detection
Description
Serial Data Input
Power Output
Data Input
MIC Signal Input
Ground
Serial Data Output
Serial Data Input
Ground
Ground
Ground
Specifi cation
CMOS
13.6 V
Ground
High Impedance CMOS
Ground
600 
High Impedance
High Impedance
Specifi cation
RS-232C compatible
RS-232C compatible
CMOS
600 
Ground
TTL
TTL
Ground
Ground
Ground
I/O Notes
O
O
—
I/O
—
I
I
I/O
I/O Notes
I
O
Input : 0.5 V p-p (Typ.)
I Data Rate : 9600 bps
High Impedance
I
—
O
I
—
—
—