Security System Components - Security Labs SL611 User Manual

SECURITY SYSTEM COMPONENTS

TRIGGERING DEVICES
This event recorder is designed to be compatible with almost any type of triggering device. A magnetic door switch,
passive infrared detector, panic switch, pressure sensitive floor mat, sound detector, alarm panel output, etc., or any
combination of these can be used to turn the recorder on and start the recording function. All of these devices are sold
as a normally-open or normally-closed switch-type operation.
NORMALLY-OPEN (N/O) SWITCH
A normally open switch is similar to a light switch in your home. When the switch is off, it is considered OPEN. When
you turn on the light, it is CLOSED. When the light switch is OPEN (off), no electricity flows to the light fixture. When
you close the light switch (on), the light turns on. Consequently, a switch is normally open until asked to perform a func-
tion; this is the only time that it is closed. When more than one normally-open switch is used in a circuit, they are con-
nected in "parallel fashion" as shown below.
NORMALLY-CLOSED (N/C) SWITCH
A normally-closed switch is one that conducts electricity until an action causes it to turn off (open). This type of switch
is popular in installations where if a circuit is broken (opened), the alarm is triggered. A break (open) at any normally-
closed switch will cause a trigger. Normally-closed switches are always connected together in a series (loop) as shown
below.
CONNECTING SWITCHES
Once you have selected the triggering device(s) for your installation, you may connect it (them) to the proper screw
terminals on the back of the unit.
Panic recording from a video camera can be achieved by connecting a normally-open switch to screw terminals 2 and
3. Terminals 2 and 3 allow the unit to continuously record until the end of the tape. This function is recommended for
an alarm condition or panic situation. Terminal 5 provides a momentary closure (OPEN COLLECTOR TYPE) to the
common terminal to activate an accessory END OF TAPE alarm, or activate additional event recorders connected in
series.
AUDIO / VIDEO SOURCES
Connect your surveillance camera or closed-circuit monitor output to the video input of the recorder. If your camera
has sound capability, or if you have a microphone amplified to audio line level, it may be connected to the audio input.
Any composite video signal and "line level" audio can be used for recording purposes. "Line level" is an audio signal
compatible with the AUDIO IN jack, i.e. the AUDIO OUT jack on your camera or monitor.
VIEWING THE RECORDING
To view a recording, the recorder can be connected to any standard television set or composite video monitor. A cable
is supplied to connect the OUT TO TV jack on the back of the recorder to the antenna input on your TV . Set your TV
to channel 3 or 4 to correspond to the switch on the back of the recorder. An antenna or cable system signal can be
connected to the IN FROM ANT jack to allow the unit to be used as a conventional VCR. The recorder is fully com-
patible with observation systems, quad monitors, or other standard composite video devices.
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