GE TruVision DVR 20 User Manual page 82

53BChapter 6: Advanced setup
Option
Group alarm
Alarm mode
Input type
Buzzer on alarm
Buzzer on video loss
Protect video on alarm
Alarm Recording
PTZ preset
4. Click Back to Group Alarm to return to the first Group Alarm screen. All changes
are saved automatically.
5. Set up other group alarms, if required.
78
Description
Select the group alarm number. There can be up to three group
alarms.
Set the alarm mode when the alarm is triggered. There are three
types to choose from:
Timeout: The alarm condition is latched for the amount of time
specified in the timeout field displayed alongside. The timeout can be
up to a maximum of 99 seconds.
Transparent: The alarm is active only while receiving alarm input.
Latched: The alarm is activated until it is manually acknowledged.
See "Manually acknowledging an alarm" on page 59 for further
information.
Select NO or NC.
Check to have an audible alarm when an alarm is triggered.
Video may be lost if the video cable or camera develop a fault.
Check to have an audible alarm when the video image is lost.
If an alarm is triggered, the recorded video can be protected from
being overwritten.
Check to protect recorded video triggered during an alarm.
Set how an alarm video is recorded. The pre and post alarm settings
are dependent on the resolution, image quality, and alarm frame rate
settings.
Alarm frame rate: Set the frame rate for both A stream and B stream
(if applicable)
Pre-alarm recording: This is the time recorded before a motion or
external alarm is triggered and is included in the alarm data. Select a
time between 0 and 60 seconds.
Post-alarm recording: This is the time recorded after a motion or
external alarm is triggered and is included in the alarm data. Select a
time between 0 and 60 seconds.
Set which preset is used when an alarm is triggered for a camera.
Click the Preset button. In the PTZ screen select the camera number
and its preset value. When completed, click Back to return to the
Alarm & Event menu. Changes are automatically saved.
TruVision DVR 20 User Manual