Maxon Telecom MM-6854 사용자 설명서
MM6854/64 Dual Band GSM Data Modem
Issue 1.0
ME 820047
03/00
Page 41
7.7 Connections
7.7.1 9 pin D-type (RS-232 Interface)
Pin
Function
1
DCD
2
TXD
3
RXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
Table 7-1 - 9 pin D-type socket connections
7.7.2 25 pin D-type
Pin
Function
1
GND
2
Software update supply 5.2 to 7.2V
3
Software update programming voltage 0 – 5.2V
4
Software update serial data Rx 0 – 3 V
5
Software update serial data Tx 0 – 3 V
6
Reserved for future use
7
Reserved for future use
8
Reserved for future use
9
Reserved for future use
10
GND
11
Reserved for future use
12
Reserved for future use
13
GND
14
GND
15
Ignition (active low)
16
Power Supply (+9 to +28VDC)
17
Power Supply GND
18
Reserved for future use
19
Reserved for future use
20
Reserved for future use
21
Reserved for future use
22
Reserved for future use
23
Reserved for future use
24
Reserved for future use
25
Reserved for future use
Table 7-2 - 25 pin D-type plug connections
7.8 Summary
This section has briefly covered the installation of the MM-6854 data modem.