User manual BUSHNELL VELOCITY

[. . . ] To ensure optimal performance and longevity, please read these instructions before using your Bushnell Velocity. INTRODUCTION Your Bushnell Velocity uses digital technology to provide instantaneous speed measurements to +/- One-Mile per Hour (MPH) accuracy. The Bushnell Velocity is a simple, point and shoot radar gun for all kinds of sports enthusiasts. The Bushnell Velocity measures the speed of a baseball at 10-110 MPH from 90 feet away from the ball, and the speed of a racecar from 10-200 MPH at 1, 500 feet away. BATTERY INSTALLATION Your Bushnell Velocity operates on two C alkaline batteries. [. . . ] An icon in the upper right corner of the LCD display. This indicates the Doppler Radar is functioning. The radar will continue to be active searching for speed until the trigger is released. Upon release of the trigger, the fastest speed captured within that series will automatically be displayed. The speed of the target will appear on the LCD display in MPH. There are certain mathematical properties of Doppler Radar that affect the accuracy of your Bushnell Velocity. Please read COSINE AFFECT ON TARGET VELOCITY below. As a quick reference to accuracy, remember to keep your targets direction of travel in a direct line with you, and not perpendicular. COSINE EFFECT ON TARGET VELOCITY The Velocity will measure the relative speed of a target as it approaches the Velocity. If the target is in a direct line (collision course) with the Velocity the measured speed will be exact. As the angle of incidence increases, if you move either right or left of this direct line, the accuracy will decrease. The measured speed will decrease as you move off this centerline. This phenomenon is called the Cosine Effect. It is called this because the measured speed is directly related to the cosine of the angle between the Velocity and the target's direction of travel. SPECIFICATIONS Speed Performance: Accuracy: Battery Type: Operating Time: Operating Temperature Range: Ball: 10-110 MPH from 90 Feet Car: 10-200 MPH 1500 Feet +/- One MPH C (2) Up to 20 hours 32-104 F / 0-40 C WARRANTY / REPAIR -- Two Year Limited Warranty Your Bushnell® product is warranted to be free of defects in materials and workmanship for two years after the date of purchase. In the event of a defect under this warranty, we will, at our option, repair or replace the product, provided that you return the product postage prepaid. This warranty does not cover damages caused by misuse, improper handling, installation, or maintenance provided by someone other than a Bushnell Authorized Service Department. Any return made under this warranty must be accompanied by the items listed below: 1. [. . . ] However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: · Reorient or relocate the receiving antenna. · Increase the separation between the equipment and receiver. [. . . ]