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Allegiant Keyboards
below). Auxiliary number 6 corresponds to an internal receiver/driver AUTO-PANNING feature
that must have been previously enabled via an option switch internal to the receiver/driver.
DITHER is a legacy Allegiant Receiver/Driver feature designed to extend the life of tube-based
low-light level cameras. Its function was to prevent bright lights in the scene from burning a
spot on the camera imager. When this feature is active and the pan/tilt is not moved for a
period of about 2 minutes, the receiver/driver automatically pans right for approximately 0.5
seconds. Two minutes later, a pan left occurs. This cycle continues until disabled. The feature
is enabled via an option switch in the receiver/driver, and is activated by turning on auxiliary
5. To deactivate the feature, turn off auxiliary 5. When first enabled, the pan/tilt unit makes
one short Left/Right cycle to indicate that the DITHER function has been activated. Note that
a camera in the DITHER mode accumulates a viewing error if left unattended for a long period
of time, so occasionally a manual adjustment of the pan/tilt may be required.
7.5.8
Arm/Disarm Individual Alarms
Alarm commands are used to control the system's automatic video switching, in response to
alarm signals. To arm/disarm an individual alarm on the monitor currently controlled by the
keyboard, press ALARM. Enter the alarm number to be armed using the numeric keypad, and
press ON to arm the alarm, or OFF to disarm it.
Using default settings, the camera activated by an alarm is normally the same as the alarm
number, but this relationship can be changed via the optional Allegiant PC based Master
Control Software package. In cases where the alarm number does not match the camera
number, it is important to specify the alarm number when using this command.
The monitor status display (if enabled) shows "'CA" (camera/alarm armed) whenever an
armed camera is selected.
7.5.9
Arm/Disarm All Alarms
To arm/disarm all alarms on the monitor currently controlled by the keyboard, press USER,
ALARM, then ON to arm all alarms, or OFF to disarm all alarms.
7.5.10
Arm/Disarm Monitor
To arm/disarm the monitor currently controlled by the keyboard, press USER, MONITOR, then
ON to arm the monitor, or OFF to disarm the monitor.
Note: Alarm video will appear on a given monitor only if the monitor is armed and the alarm is
armed for that monitor. The monitor status display (if enabled) shows "MA" (monitor armed).
7.5.11
Acknowledgment of Alarms
ACK is provided so system operators can respond to alarms from the keyboard. Pressing ACK
while the keyboard is beeping due to an alarm condition always silences the beeper.
Depending on alarm configuration programming, subsequent pressing of the ACK key either
clears alarm video from the monitors, or has no effect.
7.5.12
Load/Clear a Sequence
To load a previously programmed sequence so it can be run on your monitor, press
SEQUENCE, enter the desired sequence number (1 to 60 for most Allegiant models, or 1 to
256 for the LTC 8900 system), and then press ENTER. Note that loading a sequence does not
automatically initiate the sequence. Refer to the following sections for sequence control
information.
Since sequences may be programmed to use more than one monitor, all monitors required for
a sequence must be available. If a sequence is already on a monitor, the operator who loaded
it originally (or an operator with a higher priority) is permitted to load a new sequence on the
monitor or monitors. Others receive an error message.
Bosch Security Systems, Inc.
Instruction Manual
User Information | en
23
F.01U.127.290 | 2.0 | 2009.03
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