Monitors; Display/Queuing/Clearing - American Dynamics 48 Plus Installation And Operation Manual

Easy48

Monitors

To display the Monitors screen, click the Monitors node on the left-hand side of the display area. This screen is used
to arm monitors for response to alarms.
The number of monitors displayed in this screen depend on how the Multi Matrix screen was completed. Monitors are
listed by their monitor identification number, with port references shown in brackets. In the port reference, the first
character refers to the matrix to which the monitor is connected (X = primary unit, A-F = secondary unit) and the second
and third characters are the video output port number on that matrix (1-16).
Notes
• When video loss detection is enabled in the Options screen, the monitor with port reference X16 is used by the
system to sample video and will therefore be unavailable for arming.
• Alarm programming is not complete until individual alarm contacts are associated with armed monitors. Without this
association, any video or on-screen message that is to be shown when the alarm is triggered is not displayed. To
create these associations, use the Alarm Associations screens. For details on alarm programming, see page 31.

Display/Queuing/Clearing

The Display/Queuing/Clearing field is used to arm monitors for alarm call up. A user can select to either leave a
monitor disarmed, or they can arm the monitor by selecting one of the arming option from the field. The options are
always a combination of the following three parameters:
• The Display method (single, dual, or block monitors)
Single Display – incoming alarms are displayed on a single monitor with which they are associated. Multiple alarms
received at single monitor will be displayed in sequence based on the monitor's queuing method.
Dual Display – incoming alarms are displayed on a pair of monitors. The monitor that receives the first of a series of
alarms is called the hold monitor . Subsequent alarms are received and queued at the second monitor of the pair.
The second monitor is called the sequence monitor . After an alarm is cleared on the hold monitor, the first alarm in
queue on the sequence monitor is moved to the hold monitor for viewing and clearance.
Block Display – incoming alarms are viewed on a block of monitors. The first incoming alarm is displayed on the first
(lowest numbered) monitor of the block. The second alarm is displayed on the next lowest numbered monitor of the
block, and so on. When all monitors in a given block are displaying alarm video signals, all subsequent alarms are
held in queue until the displayed alarms are cleared.
• The Queuing method (sequence or hold)
Sequence Queuing – incoming alarms are displayed in sequence on an armed monitor, and will cycle continuously
until each is cleared. Each alarm will be displayed for a pre-programmed dwell time, before it is succeeded by the
next received alarm.
Hold Queuing – an incoming alarm is displayed and held on an armed monitor until it is cleared. All subsequent
alarms are queued in order until the current held alarm is cleared.
• The Clearance method (manual, instant, or auto)
Manual Clear – an alarm is cleared by a system operator's keyboard command.
Instant Clear – an alarm is reset immediately at its source (if the alarm has not already been manually acknowledged).
For example, a door opens and activates an alarm. Closing the door clears the alarm instantly.
Auto Clear – an alarm is reset at its source after a 20 second delay (if the alarm has not already been manually
acknowledged). For example, a door opens and activates an alarm. The door is immediately closed, but the alarm
will not clear unless the door remains closed for a 20 second interval.
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