Table of Contents
Advertisement
SW-D8000U, 16CH. COLOR VIDEO MULTIPLEXER
The LED and internal buzzer alarm indicators will be activated only if a Live alarm is active.
Alarm status Played back from a recorded tape has no effect on these indicators. The internal
buzzer can be disabled via an installer programmed menu item.
3.4.4
ALARM INDICATORS
On-screen display of text "A" in each corresponding cameo of multi-screen displays and 'ALM'
on any Monitor-B displays relating to cameras in alarm. The indications will be flashing.
An additional indication in the form of an LED is provided on the front panel, above the
key. This LED will flash if any Live alarm is active and has not been cleared. An internal will
sound while any Live alarm is active. This buzzer can be disabled via a setup menu.
3.4.5
CLEARING ALARMS
To clear all displayed alarms: Press the
3.4.6
ALARM HISTORY
An alarm history is kept in a cyclic buffer. History data, including camera number and time and
date is kept in memory for up to 100 events. The most recent 100 alarm events can be viewed
on-screen in the menus, by selecting the
HISTORY
.
A table will appear, allowing the user to browse forward and backwards among the last 100
alarmed events. Each event relates the time of occurrence with an alarm-input number.
3.5
MOTION DETECTION
The SW-D8000U offers motion detection capabilities, including built-in Activity Detection. Activity
detection is used to adjust the rate at which cameras are recorded and can activate an output relay
to cause automatic external actions such as speed change on the VCR, or floodlights, or audio
announcements and so on.
3.5.1
ACTIVITY DETECTION
Activity detection simply looks for changes in the luminance in various selected areas of the
screen, and if changes are above a set threshold (sensitivity) then the activity detector interprets
that to be activity. Typically, activity detection is used to detect activity in crowded areas, where
activity is not the result of intruders and where human traffic is normal and expected.
If activity is detected the SW-D8000U will automatically change recording speed according to its
programmed settings. If a relay has been programmed to be activated, then it will respond as
programmed until the activity ceases.
Indicators: If enabled in programming, the indicator 'M' will appear in each camera scene
whenever activity motion has been detected. The indicator is not present on full-screen analog
displays. This motion indicator will stay on each active camera's display for at least 2 seconds
after the motion has ceased.
If alarm input is activated by one of the SW-D8000U internal motion detector channels, the unit
will react in exactly the same way as for any other external sensor activating that alarm input.
JVC PROFESSIONAL, IMAGING PRODUCTS
ALARM
key.
OPERATOR
menu and then selecting
ALARM
ALARM
27
Advertisement
Table of Contents
