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Overview
Rev 2.00
Alarm Inputs
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There are two alarm inputs that respond to either normally open/closed contacts (for
example, a hold-up button) or devices that use Transistor to Transistor Logic (TTL)
open collector signals (for example, a PIR detector).
•
These inputs allow an alarm to be triggered by a manually pressed button, an infrared
beam being interrupted, a door contact being opened, or any other similar source.
The HRDVS Program mode allows you to assign the signal level to be used by each
alarm input. These user-defined alarm inputs are separate from the alarms that are
triggered automatically if a video signal is lost or if an event is detected.
Alarm Output
When the HRDVS detects an alarm, the alarm output contact closes, triggering any external
alarm signals you have hooked up to this output (for example, flashing lights, buzzers,
bells).
Cables
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The HRDVS uses common cable connectors:
BNC male to male 75 Ω cables required for cameras and monitor
•
•
RCA male to male cables recommended for audio support
•
RJ-45 male to male 10/100BaseT cable required for Ethernet support
•
AC power line cord (included)
Note
Before beginning the installation, consider the cables you will need. The type
and length of cable used for your video and audio inputs is an important
consideration as long lengths can adversely affect signal quality.
4
Document 900.0281
02/07
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