Black Box 5000 Diagnostics, Self-Test, Terminate Test, There are four test options available

CHAPTER 12: Diagnostics

12. Diagnostics

12.1 Self-Test

The self-test checks the operation of all system memory. The Multiserver automatically executes a self-test when power is first turned on or when the system is reset. All LED indicators turn ON and the Multiserver does a RAM and ROM check. The port indicators stay ON until the completion of the self- test. When the test is complete, the LCD will display either SELF TEST PASSED or the appropriate alarm message. For a complete list of LCD messages, refer to Appendix D.

12.2 Terminate Test

Some tests require a termination command. From the Command Facility Main Menu, choose option 8, Terminate Composite Loopback and Integral Tests.

COMMAND FACILITY MAIN MENU [node id]

8TERMINATE COMPOSITE LOOPBACK AND INTEGRAL TESTS

You will return to the Command Facility Main Menu and the test(s) will cease.

12.3 Async Channel Loopback in Command Mode

Async Channel Loopback tests are are designed for the user to test his own terminal. They are available through the Command Mode.

COMMAND MODE: CHANNEL xx

1 ASYNC CHANNEL LOOPBACK

There are four test options available.

ASYNC CHANNEL LOOPBACK

1.LOCAL ECHO

2.REMOTE ECHO

3.LOCAL FOX

4.REMOTE FOX

CR - ACCEPT ENTRY

M- MAIN MENU

ENTRY:

NOTE: These are virtually the same tests that are available in Link Channel Loopback (discussed in Section 12.4). The difference is that in Link Channel Loopback, a remote port connection is not required to perform a remote echo or fox.

LOCAL ECHO

This test places the local channel in loopback. The Multiserver displays LOCAL TEST, ECHO INPUT and loops back all data to the terminal. Integrity of the port and the terminal may be judged by observing the quality of the returned data (see Figure 12-1).

To end the test, press ^X^Y or <break>. You will be returned to the Command Mode.

REMOTE ECHO

When this test begins, the Multiserver displays REMOTE TEST, ECHO INPUT. Data is sent through the remote unit (Multiserver or feeder mux) and back to the terminal that initiated the

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