Owner`s manual

3.2.11 Normal/Diagnostics..................................................... 28
3.3 LED Indicators ........................................................................ 29
3.4 Functions ................................................................................. 29
3.4.1 Local Area Data Set Applications ............................. 29
3.4.2 Off-Net Extension Applications ................................. 30
Chapter 4 - Troubleshooting
4.1 Introduction ............................................................................. 32
4.2 LED Indicators ........................................................................ 32
4.2.1 RCV Indicator .............................................................. 33
4.2.2 XMT Indicator ............................................................... 3 3
4.2.3 CD Indicator ................................................................. 3 3
4.2.4 56K Indicator ................................................................ 33
4.2.5 19.2 Indicator ............................................................... 33
4.2.6 CTS Indicator ............................................................... 33
4.2.7 RTS Indicator ............................................................... 3 4
4.2.8 NS Indicator ................................................................. 34
4.2.9 TM Indicator ................................................................. 34
4.2.10 OOS Indicator .............................................................. 3 4
4.3 Diagnostic Tests ..................................................................... 35
4.3.1 Local Loopback Test ................................................... 35
4.3.2 Digital Loopback Test ................................................. 36
4.3.3 Digital Loopback With Test Pattern Test .................. 37
4.3.4 Test Pattern Test.......................................................... 38
4.3.5 DSU Loopback Test .................................................... 39
4.3.6 DSU Back-to-Back Test ............................................. 40
Chapter 5 - Warranty, Service and Tech Support
5.1 Service ..................................................................................... 42
5.2 Limited Warranty .................................................................... 4 2
5.3 Tech Support and BBS.......................................................... 43
5.4 Recording DSU Information ................................................. 43
Appendixes
Appendix A - Application Examples ............................................... 46
Appendix B - Interface Signals and Connector Pinouts ............. 50
Glossary
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82023101.p65 2/12/01, 2:52 PM4