74 MTM800 Enhanced Mobile Terminal Installation Manual INSTALLATION
Radio-to-Data Device: Active Data Cable
The GMKN1022 Active Data Cable provides a 5-wire RS232 interface (for example, RxD, TxD,
CTS, RTS, DTR) between a computer and a mobile radio. The cable has to be connected to the 20-
pin Accessory Connector on the rear side of the radio and into the 9-pin connector of a Data Device
(for example, PC, Laptop, console)
The GMKN1022 Active Data Cable is not repairable. Order a replacement cable as necessary.
Length: 2.0 m (6.56 feet)
Figure 36 Active Data Cable GMKN1022
Cable Connectivity
Table 18 Pin Assignment - Active Data Cable GMKN1022
9-Pin Connector Function 20-Pin Connector Function
1 DCD 3 External PTT
2 RXD 8 GND
3 TXD 13 SWB +
4 DTR 15 DTR
5 GND 17 CTS
6 DSR 18 RTS
7 RTS 19 TXD
8 CTS 20 RXD
9 RI
R a d i o I n t e r f a c e B o x ( R I B )
5
1
9
6
T o t h e c o m p u t e r
T o R a d i o A c c e s s o r y
C o n n e c t o r
1 9
2 0
1
1 7
2
1 8
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