Chapter 3. Operation9 0 TSU 120 User Manual 61200.129L1-1511 PATTActivates the generation of the 511 test pattern.ON The pattern check circuitry is enabledand a test started. The test is ended byselecting OFF.OFF The pattern generation and check isdisabled.DIS 511 RESLTDisplays the results of the 511 test indicated in the 511option. The results are in the form of the number oferrored seconds. The error count can be cleared bypressing the Clear key (shift+9).Port Test Menu Items for 0.2 DSX-1LoopbackLoopback activates the loopback function on the baseDSX-1 interface. The available loopbacks are a PortLoopback (towards the NI) and a Line Loopback(towards the PBX or other terminal equipment).Cancel TestsUse this menu selection to deactivate all active tests,including tests on option modules.
