ADCP-61-471 • Issue 4 • June 2000 • Section 2: Operation and Maintenance

DLP-511

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DS3 MUX FORCED SWITCH TEST

Summary: This procedure provides instructions for testing the forced-switch capability of the DS3 MUX in the Soneplex Broadband system. An end-to-end data path test is also performed using only the working DS3 MUX. The forced-switch occurs first to bring the Protect DS3 MUX online, then the end-to-end data path test is repeated.

Caution: Modules can be damaged by electrostatic discharge (ESD). Before handling any modules, ESD protection must always be used. Ensure that all modules removed from the chassis or not installed are properly stored in anti-static packing material. When working with modules, always place the module on an electrically-grounded, approved, anti-static mat.

1.Identify the offline DS3 MUX; its STATUS indicator is green and its ONLINE indicator is extinguished.

2.Hold ENABLED button down and momentarily press LMPTST/APS on offline DS3 MUX.

3.Verify that the DS3 MUX that was offline is now online (its ONLINE indicator is now green) and DS3 MUX that was online is now offline (its ONLINE indicator is extinguished).

4.Verify that APS indicator on online DS3 MUX is yellow indicating a forced switch and APS disabled.

5.Repeat Step 2 and verify that APS indicator is off.

6.Perform end-to-end test and verify error-free data.

7.Set up the chassis and perform end-to-end tests between chassis and remote unit.

Reference: DLP-510ODS2 Distribution System and QFLC/QLX ChassisEnd-to-End

Tests

Reference: DLP-520HLXC and HLXR End-to-End Tests

Reference: DLP-522DLX- or RLX-Equipped Circuit End-to-End Tests

Stop! You have completed this procedure.

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© 2000, ADC Telecommunications, Inc.