Decatur Electronics G3 - Field Tests and Verification; Operator-Requested Self Test

G3
™
User’s & Installation Manual
7/October/2020
59
9.2 Road Test
After the radar unit passes the self-test you may want to conduct a
road test during each shift to conrm that the patrol motor vehicle’s
speedometer matches the unit’s patrol speed.
The road test veries that the radar unit’s patrol speed and the motor
vehicle speedometer are within ± 1 display unit of each other. You
need to conduct the road test on a level road.
1. Verify that the antenna is aimed correctly and parallel to the
direction of travel.
2. Turn either the front or rear antenna on
3. Drive the patrol motor vehicle at a constant, legal speed to verify
that the speedometer reading, and the patrol speed are within ±
1 display unit of each other.
4. If the dierence is greater than ± 1 display unit, verify that the
antenna is aligned correctly. If the antenna is aligned correctly,
this reading can indicate a speedometer inaccuracy.
• Anincorrectlyaimedantennawillcausetheradarunit’s
patrol speed to be lower than the speedometer’s speed.