CTC Union EOe-1, User Manual

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Chapter 4. Test & Diagnostics
25
4.1 General
This chapter contains procedures for performing system
diagnostic tests.
4.2 Loop Back Tests
The loop back test buttons (Local Loopbk and Remote
Loopbk) and the LED indicators built into the
EOe-1
allow for
rapid checking of the
EOe-1
and the E1 line. Before testing the
operation of the data system equipment and their line circuits,
ensure that all units are turned on, connected properly and are
configured correctly.
4.3 Bit Error Rate Tester
When depressing the Pattern push-button switch, the Bit
Error Rate Tester (BERT) can be activated in which the test
pattern transmitted is received by another
EOe-1
(see Figure
4.1). When used opposite another
EOe-1
, with the Pattern push-
button switch depressed and transmitting the same pattern (V.52
511-bit), the complete link can be tested. If errors are
encountered, the Error indicator LED will blink (for intermittent
errors) or remain on continuously (for continuous errors).