CCTV Camera Pros Geovision 8.5 Multicam Digital Surveillance System - Manual (Page 309)

I /O Applications
291
6
6.1.1 Latch Trigger
Instead of constant output alarm in N/O and N/C, the Latch Trigger option provides a momentary alarm,
and allows you to set the alarm duration.
Setting up Latch Trigger:
On the main screen, click the Configure button (No. 14, Figure 1-2), point to Accessories, click I/O
Device, and select I/O Device Setup to select the Latch Trigger option. See the red square in the
dialog box below.
I/O Device Setup I/O Application Setting
Figure 6-4
Application Example:
In the above scenario, Input 4 is set to N/O and Latch Trigger as well. When Input 4 is triggered:
z The camera starts recording for 30 seconds and stops itself until the next input trigger (see the
Rec Video option in the blue box).
z Computer Alarm sounds once (see the Invoke Alarm option).
z The output (Module 3, Pin 7) is triggered simultaneously based on the Latch Trigger mode (see
the illustrations below).