Table B-2 Db25 Rs-232 Interface Connector Pinout - Motorola OM 1000 Installation And Operation Manual

B-2 Cabling Specifications
Table B-2
DB25 RS-232 interface connector pinout
P i n N u m b e r S i g n a l
1 Shield
2 TX
3 RX
4 RTS
5 CTS
6 DSR
7
GND
8 RLSD
9 N.C.
10 N.C.
11 N.C.
12
N.C.
13 N.C.
14 N.C.
15 TXCLK
16 N.C.
17 RXCLK
18 N.C.
19 N.C.
20 DTR
21 RL
22 RI
23 RS
24 TXCLK
25 TM
The OM 1000 can either source or sink the transmit clock; this is determined by a configuration
selection. Sinking the clock is needed when sending data through a modem through a network
T1 line. In this case, the modem sources a clock that is locked to the network. The OM 1000
sinks the clock and sources data to the modem to be sent to the network.
OM 1000 Installation and Operation Manual
D i r e c t i o n D e s c r i p t i o n
Chassis ground
Out Transmit data
In Receive data
Out Request to send
In Clear to send
In Data set ready
Signal common, connected to chassis ground
In Receive line signal detect
No connection
No connection
No connection
No connection
No connection
No connection
In Transmit signal timing clock
No connection
In Receiver signal timing clock
No connection
No connection
Out Data terminal ready
In Signal quality detect (remote loopback)
In Ring indicator
In Rate selector
Out Transmit clock
In Test mode