Chapter 3. Operation61200060L1-1 TSU User Manual 3-291. Follow standard operating procedure to access the4)TEST menu item.2. With the cursor on 2)RUN SELFTEST, press ENTER.A changing display in the LCD showing the test outcomedisplays.3. Press the CANCEL key to exit.3)Port Tests submenu of 4)TestPort Tests are used to control the activation of a DTEloopback. This test loops data received at theV.35 interfaceback towards the DTE.1. With the cursor on main menu item 4)T EST , pressENTER. The first two Test submenu items with the cursoron 1)NETWORK TESTS displays.2. Use the down scroll key to select 3) PORT TESTS.3. Press ENTER. The loopback setting displays.4. Use the scroll keys to select OFF or ON.• ON - the DTE Loopback is activated• OFF - deactivates looping (returns unit back tonormal state)5. Press the CANCEL key to exit.S Y S T E M S E L F - T E S TA L L T E S T S P A S S E D1 ) D T E L O O P B C K : O F F
