7.0 Diagnostics

From page 2 of the MAIN MENU, select RMT. Then select TEST. From the REMOTE TEST menu, select RDL.

From the REMOTE DIGIT LOOP screen, select ON to activate the test. The status screen is displayed as the test is being conducted. Make sure that test data is being generated and watch for data errors. By transmitting test data and comparing it with the received copy, you can make sure the Modems and the telephone line are working.

To end the test, press the ENT pushbutton to return to the REMOTE DIGIT LOOP screen. Then select OFF.

7.8.2REMOTE DIGITAL LOOPBACK SELF-TEST (RDLST)

The RDLST allows testing of the local modem, remote modem, and telephone line from the local site (as did the previous test). However, test data is generated by internal modem circuitry as opposed to a DTE or external BERT. Figure 7-7 shows the connections automatically made during the test.

In Hayes mode only, initate the RDLST using the command &T7 (AT &T7). In any mode, initate the RDLST test from the front panel.

Both modems must be on-line. From the second page of the MAIN MENU, select RMT. Then, select TEST. From the REMOTE TEST menu, select

RDLST.

From the RDL SELFTEST screen, select ON to activate the test. The status screen is displayed as the test is being conducted. If "ER" is present on the status screen, the modem is detecting errors. If numerous errors are detected, take steps to try to identify their source.

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MD885C-R2, MD885A-R3, MD885AE-R2, 34336 specifications

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