Dsu Back-To-Back Test - Multitech MT56DSU2 Owner's Manual

Multi-tech multidsu mt56dsu2 network device: user guide

Hide thumbs Also See for MT56DSU2:

Table of Contents

MT56DSU2 Owner's Manual

4.3.6 DSU Back-to-Back Test

This test lets you connect two DSUs with a back-to-back cable to verify proper DSU operation.

Using a DSU that is known to be operational, you can test a second DSU that is suspect.

1. Obtain a DSU Back-to-Back cable (#45050000) from Multi-Tech, or assemble one. Refer to

Appendix B for instructions on building the Back-to-Back cable.

2. Plug the cable into each DSU's LINE jack.

3. On the "good" DSU, set DIP switch #9 to the down position.

4. Set one DSU to internal clocking and the other DSU to DDS clocking.

5. If you send data from your DTE, it should be "looped back" to your DTE. If you have access to

a Bit Error Rate Tester, this can be used in place of the DTE.

DTE

82017502

"Suspect"

Back-to-Back

DSU

Cable

"Good" DSU in

Loopback Mode

Table of Contents

Multidsu56k