GSM router iRZ RUH
2
(HSUPA/HSDPA/UMTS/EDGE/GPRS) 3G
User manual
11
2.6.
Interfaces
2.6.1. Connector DB9 (RS232)
DB9 connector for connecting the data cable, RS-232 interface.
·
Data collection or equipment control by means of additional software,
·
Connection of two remote devices with COM-interface via the Internet.
Fig. 2.5.1 Connector DB9
Table 2.6.1 DB9 connector pin functions
Pin
Signal
Direction
Function
1
not used
-
-
2
RXD
Device - Router
Data receiving
3
TXD
Router - Device
Data transmission
4
not used
-
-
5
GND
general
System housing
6
not used
-
-
7
not used
-
-
8
not used
-
-
9
not used
-
-
5
3
4
2
1
9
8
7
6