Systembase C300xr
0018-013-009
Page 24 of 28
Table 1 :-
X.21 Connector Pin out
7.
Data / Alarm / Remote Trigger Port
7.1
Data Port
The RS232 terminal interface can support auxiliary transmission of asynchronous data at a
baud rate of 2.4Kbps.
Type
V24 / RS232 - Fixed DCE
Speed
2.4Kbps Async
Supported Signals
TXD, RXD, SIG_GND
Connector
25 Way D-Type Female
When operating in 3.7KHz Stereo mode, additional stop bits are required to be inserted to
prevent corruption.
Pin Number
Description
1
Protect GND
2
T
(A)
3
C
(A)
4
R
(A)
5
I
(A)
6
S
(A)
8
Signal GND
9
T
(B)
10
C
(B)
11
R
(B)
12
I
(B)
13
S
(B)
