Understanding Your Detector
1514
Troubleshooting
Problem Explanation/Solution
Detector beeps briefly at the same An X band motion sensor or intrusion alarm is located
location every day, but no radar within range of your route.
source is in sight.
Detector did not alert when a VASCAR (Visual Average Speed Computer and
police car was in view. Recorder), a
stopwatch method of speed detection,
may be in use.
Officer may not have radar or laser unit turned on.
Detector’s audible alerts become Detector is in AutoMute mode. See “AutoMute” in the
softer after the first few alerts. Settings &
Preferences section for details.
The power-on sequence reoccurs A loose power connection can cause PASSPORT
while you are driving. to be briefly
disconnected and will retrigger the
power-on sequence. Check all connections.
You wish to restore the factory Press and hold the SEN and BRT buttons while
default settings. powering on the detector. A “Restored” message will
display, acknowledging the reset.
The device will not turn on. Check that vehicle ignition is on.
Check all connections.
The display feels warm. It is normal for the device to feel warm.
The display is blank. PASSPORT is in Dark mode. Press the BRT
button to adjust the brightness.
How Laser Works
Laser speed detection is actually light detection and
ranging (LIDAR). Laser guns project a beam of
invisible infrared light. The signal is a series of very
short infrared light energy pulses that move in a
straight line, reflecting off your car and returning to
the gun. Laser uses these light pulses to measure
the distance to a vehicle. Speed is then calculated by
measuring how quickly these pulses are reflected,
given the known speed of light.
Laser is a newer technology whose use is not as
widespread as conventional radar; therefore, you may
not encounter it on a daily basis. And unlike radar
detection, laser is not prone to false alarms. Because
laser transmits a much narrower beam than does
radar, it is much more accurate in its
ability to distinguish between targets
and is also more difficult to detect. As a
result, even the briefest laser alert
should be taken seriously.
There are limitations to laser, however.
Laser is much more sensitive to weather
conditions than radar,
and a laser gun’s range will be decreased
by anything affecting visibility, such as
rain, fog or smoke. A laser gun cannot operate
through glass, and it must be stationary to get an
accurate reading. Because laser must have a clear line
of sight and is subject to cosine error (an inaccuracy
that increases as the angle between the gun and the
vehicle increases), police typically use laser
equipment parallel to the road or from an overpass.
Laser can be used day or night.
How TSR Works
PASSPORT includes a new boost in anti-falsing
software to eliminate excessive alerts from
erroneous X and K band sources, such as traffic flow
monitoring systems. These systems, which are
becoming more widely used in several countries,
generate K band signals to measure the flow of traffic
on a given road. Unfortunately, most detectors see
this as a real threat and will alert you to it
unnecessarily. Our new proprietary software,
TSR, intelligently sorts, ranks and rejects
these types of false alarms automatically. The result is
ultimate protection without excessive false alarms.
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