User manual

Chapter 4. Status Menu
4-4 TDU 120e User Manual 61202156L1-1
View History
This menu item both displays and clears the accumulated
status changes of the unit.
V
IEW
H
ISTORY
displays a history of the last 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 inactive, as well as the date and time of
test activation and deactivation.
To clear the V
IEW
H
ISTORY
display, press C.
Port Status
P
ORT
S
TATUS
displays the signals monitored on the data
ports. For example, the Nx/DBU interface monitors the RTS,
CTS, TD, and RD, along with other signal lines. When a port
is selected, the terminal indicates if the signal is present.
The base Nx interface offers the status screen listed in this
section. When using other option cards, refer to the
appropriate separate manual for a definition of any status
screens offered.
The Port Status of Nx/DBU shows how to use this item.
Nx/DBU (0.1) Menu Items
DTE Data/Clock
An asterisk (*) indicates an active status of the following
lines:
• TXD -Transmit data from the DTE
• RXD - Receive data toward the DTE
• XSO - Excess zeros from the DTE
• LCK - Lock Status of the phase locked loop