Chapter 3. Operation3-4 ESU LT User Manual 61200410L1-1TIME/DATEAccesses the display and allows the setting of the currenttime and date.SOFTWARE REVDisplays the version number of the current software revisionlevel. This information is required when requestingassistance from ADTRAN Customer Service or whenupdates are needed.REINIT UNITUsed to reinitialize the unit. This menu item is not used torestore the factory default settings for all parameters.ADDRESSUsed to view and change the current Unit Address used forcontrol port access.SET PASSCODEAllows a passcode to be set.KEYPADUsed to lock the front panel keypad. With the keypad locked,the unit’s configuration can be viewed but not changed.FACT RESTORERestores factory default settings for all unit parameters.TESTThe T EST M ENU is used to initiate different types of tests ofthe unit and to view test results. Test results are displayed inthe LCD window. The menu contains three sub-items.NETWORK TESTSControl the activation of loopbacks and the initiation of datatest patterns.RUN SELF TESTUsed to execute an internal self-test.Test execution disrupts some normal operations. See individual menuitems concerning tests before executing.