Paradyne Comsphere 3510 User Manual

Also see for Comsphere 3511: Installation manual Installation instructions Quick reference guide Notice

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COMSPHERE 3500 Series Data Service Units3-6 July 1999 3510-A2-GN32-70Device TestDevice Test is a data disruptive test that tests thefunctionality of the DSU.Device Test OverviewThis 30-second test uses a test pattern generator builtinto the DSU. The test does not require any otherequipment. The generator sends a test message to theDSU transmitter where it is looped back to the receiver(Figure 3-3). The receiver then passes the test message itreceives to the comparator. The comparator checks thereceived message for errors. Errors cause the faceplateDsbl/Fail (3511) or FAIL/STR/DSBL (3510) indicator toflash. At the conclusion of the test, the PASS or FAILindicator lights.To start the test, press the LL and TP test switches. Toend the test, press the TP and LL test switches after thetest result indicator appears.Figure 3-3. Device Test Diagram