Quick Guide

SL SERIES FEATURES
High Immunity Against False Positives & Missed Alarms
Sniper Viewfinder ™
X2 Magnification Lens
The new telescope lens has a high level of visibility
for optical alignment work. Even over long distances,
a perfect installation and stable performance can be
achieved in a short period.
A.T.P.C. — Automatic Transmit Power Control (SL-QDM only)
Automatically controls, adjusts and optimizes the power of the beam and maintains optimal performance. It decreases false and missed alarms caused
by fog, frost, cross talk, and signal saturation.
Sunshine Protection Technology (SL-QDM & QDP only)
The sunshine protection technology has a triple layer construction to give better performance against external light sources, such as from the sun,
uorescent lighting, and mercury-vapor lamps.
FOG
Beam Power UP
I.A.S.C.
Integrated Alignment
Status Communication
Transmit power control signal
POWER UP
TX RX
XRXT
I.A.S.C.
Integrated Alignment
Status Communication
Transmit power control signal
POWER DOWN
Beam Power DOWN
TX
RX
TX
RX
FOG
Beam Power UP
I.A.S.C.
Integrated Alignment
Status Communication
Transmit power control signal
POWER UP
TX RX
XRXT
I.A.S.C.
Integrated Alignment
Status Communication
Transmit power control signal
POWER DOWN
Beam Power DOWN
TX
RX
TX
RX
signal level
Time
Sun(noise)
IR Beams(signal)
signal level
Time
Sun(noise)
IR Beams(signal)
Decreased beam power due to
dense fog conditions
Overpowering beam caused by
reection from wall
Decreased signal level (signal saturation) caused
by rising sun/sunset light entering receiver at the
same angle as the transmitted IR beams
Reduce beam power to avoid
unnecessary reection
Increase signal level to avoid signal saturation
Boost beam power
1. The front cover is
constructed with special
lter materials to remove
visible lights
2. The photo-diode devices
with IR bandpass lter
transmit only the same
wavelength of the IR beams
3. The light disturbance
compensation circuit
dierentiates original double
modulated beams from other
external light sources
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