TransCore 2611SS Manuel D’Utilisation
IT2200 Reader System with Multimode Capability Installation & Maintenance/Service Guide
5-12
Tag-on-a-Stick Test for IT2235 Tag
1.
Mount the IT2235 Tag on the stick or rubber or plastic spatula using Velcro or a
rubber band.
rubber band.
2.
Hold the tag on the stick with the long side horizontal.
3.
Move the tag around the desired read/write zone, and note where the tag
beeps.
beeps.
The read/write area is roughly an oval, or egg, shape. The zone should extend
from about 3 m (10 ft) ahead of the antenna to 0.9 m (3 ft) past the antenna (see
Figure 5-6). Near the center of the pattern, the read/write zone should extend
from one side of the lane to the other. This pattern width is necessary to read
motorcycles at the extreme edges of the lane. If the actual pattern is shorter or
narrower than desired, decrease both uplink and downlink attenuation 1dB and
repeat the pattern mapping. If it is larger than desired, increase the attenuation
1dB. Pattern mapping with a tag on a stick only gives a representation of the
actual pattern. The pattern probably will be different with the tag in a car. Also,
some “holes” in the pattern are unavoidable. As a general rule, if a hole or holes
does not occupy more than 10 percent of the total pattern, it is a good pattern.
from about 3 m (10 ft) ahead of the antenna to 0.9 m (3 ft) past the antenna (see
Figure 5-6). Near the center of the pattern, the read/write zone should extend
from one side of the lane to the other. This pattern width is necessary to read
motorcycles at the extreme edges of the lane. If the actual pattern is shorter or
narrower than desired, decrease both uplink and downlink attenuation 1dB and
repeat the pattern mapping. If it is larger than desired, increase the attenuation
1dB. Pattern mapping with a tag on a stick only gives a representation of the
actual pattern. The pattern probably will be different with the tag in a car. Also,
some “holes” in the pattern are unavoidable. As a general rule, if a hole or holes
does not occupy more than 10 percent of the total pattern, it is a good pattern.
Figure 5-6 Typical Read/Write Zone for a Reader (Bistatic Configuration)