Maintenance, Strobe alert, Lidar (laser) – Cobra Electronics ESD 9290 User Manual

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English

16

Your Detector

Intro

Operation

Customer

Assistance

Warranty

Notice

Main Icons

Secondary Icons

Nothing Comes Close to a Cobra

®

17

Maintenance

Your Detector

Intro

Operation

Customer

Assistance

Warranty

Notice

Main Icons

Secondary Icons

Strobe Alert

Special strobes mounted on the light bars of authorized emergency vehicles

(fire trucks, police cars, ambulances) automatically change traffic signals as

the vehicle approaches an intersection. These strobes and the special strobe

detectors located on the traffic signals, introduced fairly recently by 3M and

Tomar, are already in use in more than 1000 cities nationwide. Cobra’s exclusive

Strobe Alert detector will detect these special strobes and give an emergency

vehicle alert.
When you receive such an alert, please watch for an approaching emergency

vehicle and pull over to allow it to pass. To inquire about coverage in your area,

contact your local fire and police departments.

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:

n

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.

n

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.

n

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.

n

Is it legal for police to use LIDAR?

Yes, LIDAR is allowed to be used in all 50 States by police. Your detector

detects LIDAR (laser).

Maintenance

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:

n

Make sure the power cord is properly connected.

n

Make sure the socket of your vehicle’s cigarette lighter is clean and free

of corrosion.

n

Make sure the power cord’s cigarette lighter adapter is firmly seated in

your cigarette lighter.

n

Check the power cord fuse. (Unscrew the ribbed end cap of the cigarette

lighter adapter and examine the fuse. If required, replace it with a 2-amp

fuse only.)

ESD9290_MANL.indd 16-17

12/15/09 3:01 PM

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