Sanyo MPX-MD4 User Manual download pdf (Page 35)

ALARMS OPERATIONS

There are two types of alarms; the alarms set by an external alarm trigger and the alarms set by a loss of the video signal.

EXTERNAL ALARMS

When external inputs such as a door bell, an interphone, etc.,

are connected to the CONTROL terminal (pins 1 – 4), they will

send alarm triggers automatically. On the monitor screen, the

alarm display will identify the camera corresponding to the alarm

trigger.

Example: If an alarm trigger is received for camera 4

(in 4 divisions split 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 25).

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.

Resetting the Alarm

•

For an alarm in full screen display mode, press the

corresponding camera select button.

•

For an alarm in 4 division split screen display mode, press

the corresponding camera select button to switch to full

screen display mode then press the corresponding camera

select button one more time.

NOTE:

•

The alarm display mode on monitor 1 is selected according to

the settings entered in the (MONITOR 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.

VIDEO LOSS ALARM

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 color bars 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 32).

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.

•

The video loss alarm is recorded until the video signal is

restored.

Resetting the Alarm

•

For an alarm in full screen display mode, press the

corresponding camera select button, “NO VIDEO” will be

displayed on a grey screen.

•

For an alarm in 4 division split screen display mode, press

the corresponding camera select button to switch to full

screen display mode. Then, press the corresponding camera

select button one more time and “NO VIDEO” will be

displayed on a grey 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.

EA 04

External alarm Camera number

VIDEO LOSS

VIDEO LOSSVIDEO LOSSVIDEO LOSS

VIDEO LOSSVIDEO LOSS

(Color bars)

L8FH5/US (MPX-CD4 GB) 1999. 6. 4

34 English

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Sanyo MPX-MD4 User Manual Page 35

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