American Dynamics LT Installation And Operation Instructions Manual page 35

Matrix Installation and Operation
Display Modes
The five display modes operate differently depending on the response mode that has
been selected. The available display modes are:
NONE
No change to the monitor display is made when an response is triggered.
LAST - Last In First Out
In this display mode, each response is displayed on all alarm monitors (according to the
settings made in the Alarm Monitor screen, see overleaf). The next response to be
triggered replaces the current one (on all the monitors), although in Transparent or
Timeout response mode, the respective timeout periods must have passed first. This
minimum timeout is intended to ensure that no triggered responses disappear immediately
without being observed.
In Acknowledge response mode, previously triggered responses disappear when a new
one arrives. This can lead to a response not being carried out. The currently displayed
response is cancelled regardless of whether the alarm contacts are still active.
STACK
As each triggered response arrives it is shown on the next available alarm monitor
(according to the settings made in the Alarm Monitor screen, see overleaf). Once all the
alarm monitors are full, the next response is placed in a queue. When a response is
cleared it is replaced by the next one in the queue.
SWITCH
The first triggered response is shown on all the alarm monitors. Once it is cleared, the
next response is displayed on all alarm monitors.
ROTATE
Only to be used in Acknowledge response mode. This option switches the triggered
response to all available alarm monitors. If multiple responses are triggered, each response
is displayed in a cycling sequence. In each cycle, each response is displayed for the
length of time defined in the Transp. T/O mode menu item. In addition, auxiliary outputs
are disabled.
End Action
The Global Alarm Set Up screen also has a menu item titled End action. This option is
used to set what the system does once all alarms (and therefore responses) have been
cleared. This can be set to RETURN or NONE. RETURN will return the monitors to their
pre-alarm states when all alarms are cleared. NONE will leave the monitors in their alarm
state. This will also switch off any tours running prior to the alarm condition.
27