IT2200 Reader System with Multimode Capability Installation & Maintenance/Service Guide
5-8
5.
Mount an IT2221 or IT2235 tag on the inside of the vehicle’s windshield. The tag
must be at least 5 cm (2 in) from the windshield frame or rear view mirror post,
and it must be below the tint line at the top of the windshield.
6.
Park the vehicle with the tag exactly 3 m (10 ft) upstream of the antenna.
7.
Run the attenuation statistics program (see Step 1 of this instructions section).
Save and label the tables.
8.
Compare the attenuation statistics to those shown in Figure 5-3 and Figure 5-4.
Figure 5-3 shows an example of acceptable results. Notice that the screen shows
attenuation response counts of 9 or 10 at almost all attenuation settings. Figure 5-
4 shows attenuation response counts that range from acceptable to marginal to
unacceptable. If your results look like these, choose attenuation settings in the
acceptable range.
If the results are unacceptable, move the vehicle upstream 15 to 30 cm (6 to 12 in)
and repeat attenuation statistics. Then move the vehicle downstream of the
original position 15 to 30 cm (6 to 12 in) and repeat attenuation statistics. If
moving the vehicle results in a good report, the vehicle was in a small hole or poor
read area as a result of a standing wave pattern, and you can proceed with the
tuning.
If you are unable to achieve good attenuation statistics by moving the vehicle, go
to Chapter Chapter 6, “Troubleshooting the Installation.”
Figure 5-3 Acceptable RF Attenuation Statistics
Содержание Amtech IT2200
Страница 1: ...IT2200ReaderSystem P N 411554 Installation Maintenance Service Guide withMultimodeCapability...
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Страница 7: ...Contents...
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Страница 19: ...1 Before You Begin...
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Страница 25: ...2 Theory of Operation...
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Страница 41: ...3 System Components...
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Страница 67: ...4 Installing the IT2200 Reader System...
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Страница 91: ...5 Tuning the Lane...
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Страница 109: ...6 Troubleshooting the Installation...
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Страница 129: ...7 Preventive Maintenance...
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Страница 133: ...A Acronyms and Glossary...
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Страница 142: ...IT2200 Reader System with Multimode Capability Installation Maintenance Service Guide A 10...
Страница 143: ...B Block Diagrams...
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Страница 147: ...Block Diagrams B 5 IT2020 Reader Logic Card Figure B 3 IT2020 Reader Logic Card Functional Block Diagram...
Страница 149: ...Block Diagrams B 7 Figure B 5 Minimum Connections for the IT2020 Reader Logic Card Interface Bistatic Application...
Страница 151: ...Block Diagrams B 9 IT2611 RF Module Figure B 7 IT2611 RF Module Functional Block Diagram Bistatic Configuration...
Страница 153: ...C System Technical Specifications...
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Страница 160: ...IT2200 Reader System with Multimode Capability Installation Maintenance Service Guide C 8...
Страница 161: ...D Hardware Interfaces...
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Страница 185: ...E Connector Pin outs...
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