Chapter 3. Operation
Alarm Source
Alarm Message
Figure
Display of Alarm Messages
In addition to normal menu operation, entry to this menu item is gained by using the Alarm function (shift 8) on the keypad. The presence of an alarm is indicated by one or more of the Alarm LEDs being illuminated. Pressing Cancel will return to the menu item which was viewed when Alarm (shift 8) was initiated.
View History
This menu item is used to both view and clear the accumulated status changes of the unit.
View History displays a history of 20 status changes in the unit, including the date, time, and type of change. The unit also records for viewing the date and time an alarm became active and when it became inactive, as well as the date and time of test activation and deactivation.
To clear the View History display press Clear (shift 9) with the View History menu active.
Port Status
Port Status is used to view the signals monitored on the data ports. For example, an Nx56/64 interface monitors the RTS, CTS, TD, and RD, along with other signal lines. When a port is selected, the LCD indi- cates if the signal is present.
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