Doug, >So the voltages handled by this E1 device are: > > a power supply of 48vdc and > > the signals as defined in G.703 > >There are no voltages anywhere near the 75vdc lower >limit of the LVD as defined in 73/23/EEC, Article 1. > >So, the conclusion could be any telco device powered >by 48vdc and only handling E1 signalling is NOT >covered by the LVD - 73/23/EEC.
I'm not quite sure what side of the T1 (E1) line you're talking about, but from your comments I assume that you're referring to what is called DSX1 in North American terminology. Please note that on the DS1 (other side) that there are span-line repeater voltages to deal with, nominally 130VDC, but there are "long-reach" repeaters out there that apparently operate at 260VDC! I know that they use span-line repeater voltages on E1 lines in Europe as well, because a customer of ours was recently complaining about how difficult it was to take care of the compliance requirements since the voltage exceeded the LVD. ________________________________________________________________ John Combs, Senior Project Engineer, ITS/TestMark Laboratories Email: [email protected] URL: http://www.testmark.com
