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Westermo DDW-142 - Interface Specifications - RS-232, Ethernet TX, and Console; RS-232 Interface Details; Ethernet TX Interface Details; Console Port Interface Details

Westermo DDW-142
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11
6642-22501
RS-232
Electrical specification EIA RS-232
Data rate 300 bit/s – 115.2 kbit/s
Data format 7 or 8 data bits, Odd, even or none parity, 1 or 2 stop bits
Protocol Transparent, optimised by packing algorithm
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 housing Ye s
Number of ports 1
Ethernet TX
Electrical specification IEEE std 802.3. 2005 Edition
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
Connection RJ-45, auto MDI/MDIX
Shielded cable Not required, except when installed in Railway applications as
signalling and telecommunications apparatus and located close
to rails.*
Conductive housing Ye s
Number of ports 2
* 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 unit 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.
Console
Electrical specification LVTTL/LVCMOS-level
Data rate 115.2 kbit/s
Data format 8 data bits, none parity, 1 stop bit, no flow control
Circuit type SELV
Connection 2.5 mm jack, use Westermo cable 1211-2027

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