Specifications
Nothing
Comes Close to a Cobra
®
21
Understanding Radar and Laser
and Maintenance
20 English
Your Detector
Your Detector
LIDAR (Laser)
The correct name for the technology that most people refer to as
laser is actually
LIDAR
, which stands for Light Detection and Ranging.
LIDAR operates much like radar. Its signal spreads out like a radar signal, though
not as widely. Unlike radar, LIDAR must have a clear line of sight to its target
vehicle throughout the entire measurement interval. Obstructions such as sign
posts, utility poles, tree branches, etc., will prevent valid speed measurement.
Some common questions about LIDAR include:
g
Does weather have any affect on LIDAR?
Yes. Rain, snow, smoke, fog or airborne dust particles will reduce the
effective range of LIDAR and can, if dense enough, prevent its operation.
g
Can LIDAR operate through glass?
Yes. Newer LIDAR guns can obtain readings through most types of glass.
However, the laser pulse also can be received through glass to trigger
an alarm by your detector.
g
Can LIDAR operate while in motion?
No. Because LIDAR operates by line of sight, the person using it cannot
drive the vehicle, aim and operate the gun all at the same time.
g
Is LIDAR legal to use?
Yes. It is legal in all 50 states.
Maintenance
•
Maintenance of Your Radar Detector
Your detector is designed and built to give you years of trouble-free performance
without the need for service. No routine
Maintenance
is required.
If your unit does not appear to be operating properly, please follow these
troubleshooting steps:
g
Make sure the power cord is properly connected.
g
Make sure the socket of your vehicle’s cigarette lighter is clean and
free of corrosion.
g
Make sure the power cord’s cigarette lighter adapter is firmly seated
in your cigarette lighter.
g
Connect a USB device to the type A USB port on your power cord. If it does not
provide a charge/power to your phone/device then the internal fuse is likely
blown. Contact Cobra for support or spare parts.
Specifications
Band and Frequencies
Band
Frequencies
X Band
10.525
± 0.050
GHz
K Band
24.125
± 0.125
GHz
Ka Band
34.700
± 1.300
GHz
Ku Band
13.435
± 0.035
GHz
VG-2
11.500
± 0.250
GHz
Laser
910 ± 50nm
100
PPS
910 ± 50nm
125
PPS
910 ± 50nm
130
PPS
910 ± 50nm
200
PPS
910 ± 50nm
238
PPS
910 ± 50nm
340
PPS
Spectre I
13.300
± 0.200
GHz
Spectre IV/IV+
Not Disclosed
Safety Alert
24.070
± 0.010
GHz
Traffic Warning
24.110
± 0.010
GHz
System
24.190
± 0.010
GHz
24.230
± 0.010
GHz
U.S. Patent Numbers: 6,078,279; 6,621,447.
SPX955_MANL.indd 20-21
4/10/15 2:05 PM
