Patton electronics 2701/B User Manual
Also see for NetLink 2701/B: Specification sheetUser manualUser manual
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22The NetLink 2701 will respond to Universal Loopback De-activate toclear all central office loops.Using the V.52 (BER) Test Pattern GeneratorTo use the V.52 BER tests in conjunction with the Remote Digital Loop-back tests (or with Local Line Loopback tests), follow these instructions:1. Locate the ì511/511Eî toggle switch on the front panel of the 2701and move it UP. This activates the V.52 BER test mode and transmitsa ì511î test pattern into the loop. If any errors are present, the localmodemís red ìERî LED will illuminate.2. If the above test indicates no errors are present, move the V.52 tog-gle switch DOWN, activating the ì511/Eî test with errors present. Ifthe test is working properly, the local modem's red ìERî LED willblink once every second. A successful ì511/Eî test will confirm thatthe link is in place, and that the Model 2701ís built-in ì511î generatorand detector are working properly.Note The above V.52 BER tests can be used independently of theRemote Digital Loopback tests. This requires two operators: oneto initiate and monitor the tests at the local Model 2701, and oneto do the same at the remote Model 2701. In this case, the testpattern sent by each Model 2701 will not be looped back, but willbe transmitted down the line to the other Model 2701. While oneoperator initiates test, the other monitors for errors. |
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