Alarm Commands

To turn OFF an auxiliary function of a remote camera device, press Aux OFF [OFF], enter the number of the auxiliary you would like to deactivate and then press [Enter].

With the AutoDome Series of cameras, auxiliary commands are used to activate/ deactivate certain operational features/functions. Refer to the AutoDome camera manual for complete information on features supported by the model.

In the Allegiant Receiver/Driver Series, the first four auxiliaries correspond to relay outputs. Option switches in the receiver/driver can configure these to operate as either latching or momentary type functions. If configured for the latching type, the auxiliary stays on once it is activated until it is turned OFF. If configured as momen- tary, the auxiliary remains on only as long as the [Enter] key is pressed. Auxiliary outputs 2 through 4 can also be configured as a contact closure, 24 VAC, or as line voltage. Auxiliary number 5 controls the DITHER function, detailed below. Auxil- iary number 6 corresponds to an internal receiver/driver AUTOPANNING feature, previously enabled by an option switch inside 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 two minutes, the receiver/driver automat- ically pans right for approximately 0.5 seconds. Two minutes later, a pan left occurs, and the cycle continues until disabled. The feature is enabled by an option switch in the receiver/driver, and is controlled by the auxiliary 5 function. To activate the DITHER function, turn [ON] auxiliary 5. To deactivate the feature, turn OFF auxil- iary 5. When first enabled, the pan/tilt unit makes one short left/right cycle to indi- cate that the DITHER function has been activated. Note that a camera in the DITHER mode will accumulate a viewing error if left unattended for a long period of time, so occasionally a manual adjustment of the pan/tilt may be required.

16.5 Alarm Commands

Arm/Disarm Individual Alarms

Alarm commands control the system's automatic video switching capabilities, in response to alarm signals.

When using IntuiKey keyboards, press [Alarm Control], located on the main Alle- giant menu screen, to enter a menu screen with these options. To arm an individual alarm on the monitor currently controlled by the IntuiKey, press [Arm Alarm], enter the alarm number to be armed via the numeric keypad, then press [Enter]. To dis- arm an individual alarm when using the IntuiKey, press [Disarm Alarm], enter the alarm number to be disarmed via the numeric keypad, then press [Enter].

To arm/disarm an individual alarm when using an LTC 8555 Series keyboard, press [Alarm], enter the alarm number to be armed via the numeric keypad, then press [ON] to arm the alarm, or [OFF] to disarm it. The camera number activated by an alarm, by default, is the same as the alarm number, although this relationship can be changed via the optional Allegiant PC-based MCS package. When the alarm num- ber 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 (cam- era/alarm armed) whenever an armed camera is selected.

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