Image Sensing Systems RTMS Echo - Condition F: Under Count Past a Barrier

Chapter 4: Operations and Adjustments
RTMS Echo User Guide ©2019 Image Sensing Systems Inc. 4-15
Condition F: Under
Count in First Zone
Past a Barrier
In the situation shown in Figure 4-8, the count for zone 4 is lower than what is
expected.
Figure 4-8: Under Count: First Zone Past Barrier
The above could indicate there is some kind of barrier between zones 3 and 4.
The signal from the barrier is imposing on zone 4, causing smaller vehicles to
be missed. Moving the zone boundary away from the barrier should help
resolve this situation. Fine tune zone 4 by moving the zone boundary closest
to the barrier further away from the barrier (move away +1). A slight
adjustment can make a large improvement.