Ethernet TX
Electrical specification
IEEE std 802.3
Data rate
10 Mbit/s, 100 Mbit/s, manual or auto
Duplex
Full or half, manual or auto
Circuit type
TNV-1
Transmission range
Up to 150 m with CAT5e cable or better
Isolation
To all other ports
Connection
RJ-45, auto MDI/MDI-X
Cabling
Shielded cable not required, except when installed in Railway application
as signalling and telecommunications apparatus and located close to rails
a
Conductive chassis
Yes
Number of ports
2
a
To minimise the risk of interference, a shielded cable is recommended when the cable is located inside 3 m
boundary to the rails and connected to this port.
The cable shield should be properly connected (360°) to an earthing point within 1 m from this port. This
earthing point should have a low impedance connection to the conductive enclosure of the apparatus cabinet, or
similar, where the product is built-in. This conductive enclosure should be connected to the earthing system of an
installation and may be directly connected to the protective earth.
RS-232
Electrical specification
EIA RS-232
Data rate
300 bit/s - 115.2 Mbit/s
Data format
7 or 8 data bits, odd, even or none parity, 1 or 2 stop bits
Circuit type
SELV
Transmission range
15 m / 49 ft
Isolation
To Power, SHDSL, Ethernet
Galvanic connection to
USB, Console
Connection
RJ-45 according to EIA-561
Shielded cable
Recommended
Conductive chassis
Yes
Number of ports
1
20
DDW-142/242-12VDC-BP
