ALARMS OPERATIONS

LIVE PICTURES MODE ALARM

There are three types of live pictures alarms; the alarms set by an external alarm trigger, the alarms set by a loss of the video signal and the alarms set by the video sensors.

EXTERNAL ALARMS

 

VIDEO LOSS ALARM

 

 

 

Connect external inputs such as a door bell, an interphone, etc., to the ALARM IN terminals (1 – 16). These external switches will send triggers to the alarm inputs and the alarm display will be shown in live pictures mode.

Example: If an alarm trigger is received for camera 4 (in multi-display screen)

1 The buzzer is heard and the camera 4 indicator light.

The alarm output changes from HI (5V) to LOW (0V).

2 The image from camera 4 and the camera number (04) will be displayed on monitor 1, EA (External Alarm) will flash at the left of the camera number.

The action taken here will depend on the settings entered in the (ALARM SET) menu (see page 31).

EA 04

External alarm

 

 

 

 

 

 

 

Camera number

 

 

 

 

NOTE:

•When the alarm operation is over, the display will return to the mode preceding the alarm trigger.

•An alarm trigger can also be received at a terminal for which a camera is not connected to. In such a case, a grey screen will be displayed and EA (External Alarm) and the corresponding number will be displayed.

•An alarm trigger can also be received at a terminal for which a camera is not connected to. In such a case, “NO VIDEO” will be displayed, on a grey screen, on the monitor screen.

Resetting the Alarm

•For an alarm in full screen display mode, press the corresponding SELECT button.

•For an alarm in multi-display screen mode, press the corresponding SELECT button to switch to full screen display mode, then press the same SELECT button one more time.

NOTE:

•The alarm display mode on monitor 1 is selected according to the settings entered in the (ALARM SET) menu.

•During normal monitoring operations the camera select indicator lights according to the displayed camera. If there is an alarm trigger for another camera, the indicator will flash.

If there is an interruption of the video signal, the buzzer is heard, and the image just previous to the interruption is frozen on-screen or test chart are displayed and “VIDEO LOSS” will flash on-screen.

The action taken will depend on the settings entered in the (VIDEO LOSS SET) menu (see page 33).

VIDEO LOSS

VIDEO LOSS

 

(Test chart)

NOTE:

•If a video signal is not present from the beginning, then “NO VIDEO” will be displayed on a gray screen. This will not trigger a video loss alarm.

•During video loss alarm a frozen image or test chart are displayed on-screen. However, on the video tape, test chart are recorded until the alarm is reset or the video signal is restored.

•Even if the video loss is set to a frozen image, test chart will be displayed when the screen display is switched, or during sequential display.

Resetting the Alarm

•For an alarm in full screen display mode, press the corresponding SELECT button, “NO VIDEO” will be displayed on a grey screen.

•For an alarm in multi-display screen mode, press the corresponding SELECT button to switch to full screen display mode. Then, press the same SELECT button one more time and “NO VIDEO” will be displayed, on a grey screen, on the monitor screen.

NOTE:

•The alarm display mode on monitor 1 is selected according to the settings entered in the (ALARM SET) menu.

•During normal monitoring operations the camera select indicator lights according to the displayed camera. If there is an alarm trigger for another camera, the indicator will flash.

•If the alarm is not reset, “VIDEO LOSS” will be displayed until normal live picture signals are restored. If the display mode is changed it will switch from a frozen picture to test chart.

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