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7.7
EXTERNAL ALARM INPUTS, CONTINUED
7.7.5
Mimic Panel Button
Mimic panel buttons are managed as non-displaying alarm inputs. When the button is
depressed an alarm active state is generated. When released, an alarm cleared state is
generated. Non-displaying alarms (alarm display group 0) are not managed by the
alarm stack.
The START and FINISH macros for each defined button can be programmed to perform
specific control of the video system. In this example, pressing button (8) on the master
MP-88 module (denoted as slot 0), of mimic panel ID (H1), first sets a keyboard identity
of (5) then selects monitor (20) as the current monitor.
7.7.6
Remote Camera Alarm
Most PTZ camera site receivers are capable of detecting alarm inputs. They all support
a minimum of a tamper input. For example an RD-376 site receiver supports an optional
I/O expansion board, which provides seven (7) additional alarm inputs. Often, remote
status's, such as CALL BUTTONS or DOOR CONTACTS can be connected to the PTZ
camera site in the immediate area (reducing cabling).
In this example a call button is connected to alarm input (2) of the site receiver defined
against PTZ camera (123). It is defined as a LATCHING alarm and would need to be
cleared by an operator.
When this remote call button is pressed, the START MACRO will select camera (5) onto
monitor (6), and move this camera to preset view (9). When the operator clears the
alarm the FINISH MACRO will blank the screen of monitor (3).
7.7.7
Network Alarm
As detailed above, the door contact alarm example LINKED that alarm into the network
so all state changes are broadcast to other video system nodes. This example is
defined to intercept state changes for alarm (105) defined on video system node (02).
Now, whenever that alarm (#02:A105) becomes active, this local alarm definition (007)
will also be activated. This will cause the local START MACRO to be executed.
In this example the PTZ camera (5) is selected to monitor (6) and preset view (99) is
called. If the alarm is acknowledged locally the actual alarm (#02:A105) is also cleared.
Rev. B
WARNING: Alarm definitions for mimic panel buttons
MUST be defined as Normally-Open (N/O) and usually of
the direct mode (DIR) type.
WARNING: Remote camera alarms can experience up
to three (3) seconds of delay between actual state
change and the video system realizing the change.
7-23
HMXMC001013
31-Mar-06
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