Westermo DDW-222 - Manual (Page 11)

11 6642-22203
Description
The DDW-222 is an Industrial Ethernet SHDSL extender with support for redundancy.
The redundant protocol can be used ether on the SHDSL interface or on the built-in
Ethernet switch. Also included are a RS-232 serial adapter and a 10-port Virtual Com
re-director software. The protocols used for network communication is UDP or TCP.
This allows the serial interface to be setup as a TCP-server or -client as well as an UDP
unit. Our unique FRNT (Fast Recovery of Network Topology) technology is the fastest
protocol on the market to re-configure a network in the event of any failure of a link or
hardware. SHDSL represents the best of several symmetric DSL technologies. This unit
provides the ability to reuse existing twisted copper pair with data rates from 192 kbit/s
to 5.7 Mbit/s in both directions. The DDW-222 makes it possible to communicate over
10 km (6.2 miles) on twisted pair cable.
The DDW-222 is a bridge not router and so is simple to install. All configuration is done
using a web interface. The DIN rail mounted DDW-222 is designed for harsh environ-
ments and can be used in industrial and railway applications. It can be powered from two
separate supplies and handle an operating voltage range of 16 – 60 VDC.
RS-232 serial adapter …
10 port Virtual Com software …
Redundant protocol (FRNT) on SHDSL or on the Ethernet switch …
192 kbit/s to 5.7 Mbit/s …
Over 10 km (6.2 miles) on twisted pair …
Daisy chain SHDSL applications …
Wide temperature range (–40 to +70°C) (–40 to 158°F) …
Total galvanic isolation & transient protection …
Industrial and Rail EMC approvals …
Redundant power and wide DC input range …
Configuration using web interface …
Integrated 4-port Ethernet switch with 10/100Base-T/TX …
Auto MDI/MDI-X …
Auto speed on SHDSL with reliable, normal or high-speed mode …
Comprehensive statistics …
• SHDSL • Ethernet
SNMP support …
Extensive line protection with over-current / voltage suppression …
Diagram showing speed versus distance
DDW-222 @ 0.5 mm DDW-222 @ 0.4 mm
Speed bit/s Distance metre / miles Distance metre / miles
192000 10000 / 6.21 6450 / 4.00
1024000 7650 / 4.75 4850 / 3.01
1280000 7050 / 4.38 4700 / 2.92
2304000 5950 / 3.69 4150 / 2.58
3328000 4900 / 3.04 3700 / 2.30
4544000 4250 / 2.64 3150 / 1.95
5696000 3650 / 2.26 2800 / 1.73