Under no circumstances shall Westermo be responsible for any loss of data or income or any special, incidental, and consequential or indirect damages howsoever caused.
Do not use or store the unit in dusty, dirty areas. Connectors as well as other mechanical parts may be damaged. If the unit is not working properly, contact the place of purchase, nearest Westermo distributor office, or Westermo Tech support.
Agency approvals and standards compliance Type Approval / Compliance EN 61000-6-1, Immunity residential environments EN 61000-6-2, Immunity industrial environments EN 61000-6-3, Emission residential environments EN 61000-6-4, Emission standard for industrial environments EN 50121-4, Railway signalling and telecommunications apparatus IEC 62236-4, Railway signalling and telecommunications apparatus Safety UL/CSA/IEC/EN 60950-1, IT equipment SHDSL...
Declaration of Conformity, DDW-120 Westermo Teleindustri AB Declaration of conformity The manufacturer Westermo Teleindustri AB SE-640 40 Stora Sundby, Sweden Herewith declares that the product(s) Type of product Model Art no SHDSL Ethernet bridge / DIN rail mounted DDW-120 3621-0110 is in conformity with the following EU directive(s).
Type tests and environmental conditions Phenomena Test Description Test levels EN 61000-4-2 Enclosure contact ± 6 kV Enclosure air ± 8 kV RF field AM modulated IEC 61000-4-3 Enclosure 20 V/m 80% AM (1 kHz), 80 – 2 000 MHz 10 V/m 80% AM (1 kHz), 2 000 –...
DDW-120 forwards information about the Ethernet link status, this is sent over the SHDSL link between two DDW-120 units. In many applications it is a requirement to disconnect the link on the other side of the SHDSL link if the primary Ethernet link goes down.
Getting started The DDW-120 is easy to use and install, the units work in pairs, one as has to be configured as CO (Central Office) and one as CPE (Customer Premises Equipment). This configuration is made with DIP-switches situated under the lid of the DDW-120.
Diagnostic information The DDW-120 can display diagnostic information on two way: 1) Using the Westermo diagnostic tool DDWtool.exe. 2) Using a terminal program. 1211-2027 Using DDW-tool 1) Connect the standard cable 1211-2027 to the diagnostic port, located under the lid of DDW-120.
Using a terminal program If a customer supervision system is used the DDW-120 can provide with diagnostic status. The DDW-120 support Data rate: 115.2 kbit/s Data bits: 8 Stop bits: 1 Parity: None Flow control: None The unit is responing to two commandon...
Data rate 115.2 kbit/s Data format 8 data bits, none parity, 1 stop bits, no flow control Circuit type SELV Transmission range 15 m Isolation to All other Galvanic connection to None Connection 2.5 mm jack, use Westermo cable 1211-2027 6621-2214...
Page 12
Electrical specification IEEE G.991.2 Annex B Data rate 192 kbit/s to 15304 kbit/s Protocol EFM according to IEEE 802.3-2004 Transmission range According to ITU-T G.991.2 depending on the line quality Protection Overcurrent / overvoltage protection circuit and varistor Isolation to All other Connection Detachable screw terminal...
Connections Ethernet TX connection (RJ-45 connector) 1 – 4** Position Direction* Description In/Out In/Out TD– In/Out – Not Connected – Not Connected In/Out RD– – Not Connected – Not Connected CAT 5 cable is recommended. Unshielded (UTP) or shielded (STP) connectors can be used.
LED indicators Status Description No internal power (green) Internal power ok / boot ok LFF disabled (green) LFF enabled LFF not active (red) LFF active, link fault on this unit Flash LFF active, link fault on opposite unit No DSL link DSL link established Flash DSL link negotiating...
* Autobaud is recommended. When using manual locked speed user must make sure a correct noise margin is achieved. Westermo recommends at least 3 dB noise margin for reliable operation. ** Negotiation of speed may take up to 3 minutes to complete.
Page 17
Mounting This unit should be mounted on 35 mm DIN-rail, which is horizontally mounted inside an apparatus cabinet, or similar. Snap on mounting, see figure. Cooling 10 mm * (0.4 inches) This unit uses convection cooling. To avoid obstructing the air- 25 mm flow around the unit, use the following spacing rules.
France Singapore Other Offices infos@westermo.fr sales@westermo.com.sg www.westermo.fr www.westermo.com Germany Sweden info@westermo.de info.sverige@westermo.se www.westermo.de www.westermo.se For complete contact information, please visit our website at www.westermo.com/contact or scan the QR code REV. H 6621-2214 2017-06 Westermo Teleindustri AB, Sweden...
Need help?
Do you have a question about the DDW-120 and is the answer not in the manual?
Questions and answers