General DataComm 551 Operating And Installation Instructions page 14

TABLE OF CONTENTS
Section &
Figure
3-15 RECEIVE LEVEL SCREEN.............................................................................................................. 3-27
3-16 DS0 DIAGNOSTICS SCREEN.......................................................................................................... 3-28
3-17 CSU CONFIGURATION SCREEN................................................................................................... 3-32
3-18 MAINTENANCE SCREEN.............................................................................................................. 3-36
4 - TESTS
4-1 TROUBLE DIAGNOSTIC FLOWCHART....................................................................................... 4-3
4-2 DS1 LINE LOOPBACK FUNCTION................................................................................................ 4-4
4-3 DS1 NETWORK INTERFACE LOOPBACK FUNCTION ...............................................................4-5
4-4 DS1 TEST LOOPBACK FUNCTION............................................................................................... 4-6
4-5 DS1 LINE LOOP................................................................................................................................4-7
4-6 DS1 LOCAL TEST.............................................................................................................................4-8
4-7 DS1 LOCAL TEST WITH SELF-TEST ............................................................................................4-9
4-8 DS1 NETWORK INTERFACE LOOPBACK.................................................................................... 4-10
4-9 DS1 NETWORK INTERFACE LOOPBACK WITH SELF-TEST................................................... 4-11
4-10 DS1 REMOTE TEST WITH LINE LOOPBACK ..............................................................................4-13
4-11 DS1 REMOTE TEST WITH TEST LOOPBACK............................................................................. 4-13
4-12 DS1 REMOTE TEST WITH LINE LOOPBACK AND SELF-TEST................................................ 4-15
4-13 DS1 REMOTE TEST WITH TEST LOOPBACK AND SELF-TEST............................................... 4-15
4-14 DS1 END-TO-END SELF-TEST....................................................................................................... 4-17
4-15 DS1 TEST LOOP............................................................................................................................... 4-18
4-16 DS0 CIRCUIT DELAY MEASUREMENT TEST............................................................................. 4-20
4-17 DS0 REMOTE TEST .........................................................................................................................4-21
4-18 DS0 REMOTE TEST WITH SELF-TEST.........................................................................................4-22
4-19 DS0 END-TO-END SELF-TEST....................................................................................................... 4-24
4-20 SUMMARY OF TESTS (2 Sheets)............................................................................... ................... 4-25
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LIST OF ILLUSTRATIONS (Cont.)
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