Description
The DDW-220 is an Industrial Ethernet SHDSL extender with a built-in Ethernet switch.
It is designed as a transparent Ethernet Extender for 10/100BaseTX networks.
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-220 makes it possible to communicate over
10 km (6.2 miles) on twisted pair cable.
The DDW-220 is a bridge not router and so is simple to install. All configuration is done
using a web interface.
The DIN rail mounted DDW-220 is designed for harsh environments 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.
… 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-220 @ 0.5 mm DDW-220 @ 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
Distance is tested without noise.