User Manual

Chapter 11: Alarm settings
TruVision NVR 21(S/P) User Manual 103
Triggering or clearing alarm outputs manually
When an alarm is activated, the recorder can be set up so that the alarm must be
manually acknowledged in order to be silenced. See “Setting up external alarms” on
page 101 for information on setting up an alarm to be manually cleared.
All user levels (administrator, manager and operator) can manually acknowledge an
alarm.
To trigger or clear alarm outputs manually:
1. From the menu toolbar, click Alarm Settings > Alarm Output.
2. Click the Manual Alarm tab.
3. Select the desired alarm output and click one of the following buttons:
• Clear: Stop the selected alarm output.
• Clear All: Stop all alarm outputs at once.
• Trigger: Trigger the selected alarm output manually.
• Trigger All: Trigger all alarm outputs at once. This action could be done, for
example, when you need to test them.
4. Click Back to return to live view. The alarm is silenced.
Detecting video loss
Video may be lost if the video cable or camera develop a fault or are damaged. You
can set up the recorder to detect video loss and trigger a system notification.
Note: For the TVN 21S recorder, cameras connected to the PoE ports must be added
manually to the system in order that video loss can be reported.
To setup video loss detection:
1. From the menu toolbar, click Camera Management > Video Loss.
2. Select a camera to configure for video loss detection.
3. Check the Enable Video Loss Alarm box to enable the feature.
4. Click Rule next to the Video Loss Detection box to enter the Rule screen.
5. Click the Rule tab and select how you want the recorder to notify you of video loss.
Click Apply to save the settings.
6. Click the Arming Schedule tab and select the schedule of when you want video
loss detection to be enabled. Schedule can be set for all week or any day of the
week with up to 8 time periods per day.
7. Click the Apply button to save settings and then click OK to return to the previous
screen.
8. Click Copy to copy the settings to other days of the week and holiday period.
Note: The time periods defined cannot overlap.