Encompass 4 Reader System Guide
TransCore Proprietary.
4-66
9. Return to the center and then move to the right until the sound stops and mark the ground with chalk
or tape at the location of the tag when the sound stopped.
10. Return to the center and step backward 2 feet (0.6m) and repeat steps 5 through 7.
11. Continue moving the tag in this manner, placing marks on the ground to identify the boundary of the
read zone each time the sound stops. Continue moving the tag to various locations until the read zone
is fully marked.
12. You can now connect the outer marks to draw the outer boundary of the read zone.
Figure 49 is a view of a sample read zone within a controlled lane. The outer X marks show the outside
edges of the read zone.
Standing at the farthest point of the pattern, walk toward the Encompass 4 Reader or antenna and listen
for a continuous sound from the audible tester. If the sound is not continuous, it could indicate a weak
or “patchy” RF pattern. Refer to “Fine-Tuning and Verifying the Read Zone” on page 8–146 to adjust the
read zone.
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