B-4
Cabling Specifications
The OM 1000 can either source or sync the transmit clock; this is determined by a configuration
selection. Syncing 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
syncs the clock and sources data to the modem to be sent to the network.
Ethernet 10Base-T Interface Cabling
Refer to Amp drawing number C-557827 for cable details.
Connector type
RJ-45 connector
Cable type
STP-5 (category 5 shielded twisted pair)
Maximum cable length
150 feet
Table B-4
Ethernet 10Base-T interface connector pinout
P i n N u m b e r
S i g n a l
D i r e c t i o n
D e s c r i p t io n
1
TX
+
Out
Transmit data
+
2
TX
−
Out
Transmit data
−
3
RX
+
In
Receive data
+
4 and 5
n/c
No
connect
6
RX
−
In
Receive data
−
7 and 8
N/c
In
Data set ready
OM 1000 Installation and Operation Manual