Pelco Manual C1927M (5/99) 27

Activity Detection
A camera can be set to respond or not to respond to motion. If enabled, select SET
DETECTION MASK to define what part of the camera’s viewing field will be monitored
for motion.
5. To program another camera, press the button for that camera. Repeat steps 2-4.
6. When you have completed all the changes you want to make, go to EXIT.
7. Press the +/- button to exit the programming mode.
When HELP is highlighted, you may press the +/- button to display a help screen that will
tell you which buttons to press to configure specific options.
ACTIVITY MASK SETUP
Activity detection continually monitors selected camera inputs for motion. When motion is
detected, the multiplexer increases the frequency with which that camera(s) is shown and
recorded. Activity detection is most effective when only a few cameras are showing activity.
As the number of cameras with activity increases, the slower the frequency at which they
can be shown and recorded. If all 16 cameras show activity, there will be virtually no
increase.
The activity mask selects that portion or portions of the camera’s field of view that the
multiplexer will monitor for motion. The entire grid is active on default.
To program an activity mask for a camera:
1. Press the desired CAMERA button for approximately three seconds. The Camera
menu appears.
2. The currently selected menu item blinks. Use the arrow buttons to highlight SET
DETECTION MASK.
3. Press the +/- button. The Activity Mask appears.
4. The currently selected menu item or activity box blinks.
5. Use the arrow buttons to move between menu items and activity boxes on the screen.
6. Highlight the sensitivity menu item. Press the +/- button to select the sensitivity. The
higher the sensitivity is, the less the amount of motion that will be needed to detect
activity.

Figure 16. Activity Dectection Mask

ACTIVITY DETECTION MED SENSITIVITY
SET ALL CLEAR ALL EXIT TEST
ACTIVITY BOX SET
ACTIVITY BOX CLEAR
LOW SENSITIVITY
MED SENSITIVITY
HIGH SENSITIVITY