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3-9
If a MultiCall is assigned to a specific date and time, the CCU starts the
MultiCall when its internal clock reaches the programmed date and time. If a
MultiCall is programmed to run only one time (no intervals programmed), the
CCU removes the MultiCall from its Time Initiated MultiCall listing after it has
been run.
If a MultiCall is programmed to run at intervals, the CCU starts the MultiCall
when its internal clock reaches the programmed date and time, then updates
the Time Initiated MultiCall listing to show the next time the CCU starts the
MultiCall.
3.2.5
Alarm Interface
When an optional AIU-100 Alarm Interface Unit(s) is installed in the system,
the CCU polls the AIUs for changes of state in the contact inputs. The CCU
can also receive alarm inputs from the HD switcher or a host computer. The
CCU must be programmed to respond to the alarm inputs. The CCU can
also be programmed to automatically acknowledge the alarms. For the CCU
to respond to an alarm, the alarm must be enabled. Alarms are enabled and
disabled using the JPD-100 Controller.
Each AIU-100 has 32 alarm inputs. Up to eight AIU-100s (0-7) can be daisy-
chained together to provide up to 255 alarm inputs. The host computer can
send up to 256 alarm inputs. The HD switcher has an optional MX-4248 I/O
Board that has 24 alarm inputs. If the MX-4248 board is installed, these
alarms replace AIU-100 #0, alarm inputs 1-32.
To program the alarm inputs, the user must program a MultiCall to perform
the desired system actions when the alarm occurs and store it in the Central
Control Unit (CCU). The MultiCall must then be assigned to the alarm
input. The CCU continuously polls the Alarm Interface Units for a change of
state in the contact inputs.
When a change of state occurs (an alarm
occurs), the CCU sends out the actions stored in the MultiCall to the system.
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