N. V. Nederlandsche Apparatenfabriek NEDAP FLRRFMD Manual Do Utilizador
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Manual FLR-line
Detection distance, aisle width and label-free zone
The next step after understanding the field distribution, is understanding how many gates you need. This
depends on the detection distance (or aisle width) of the system. There is no fixed answer to this question, it
depends on many factors, like customer expectation, quality of the tags, the environment, etc.
depends on the detection distance (or aisle width) of the system. There is no fixed answer to this question, it
depends on many factors, like customer expectation, quality of the tags, the environment, etc.
The recommendations below are based on the Nedap NT4040 (reference label) for RF, and the Nedap RFID
hard tag (for RFID).
hard tag (for RFID).
Please note that only the recommended 'detection distance' or 'aisle width' is specified. Depending
on the tag used and the environment the gates are placed in, sometimes larger values can be
achieved. It is advised to test this, before using it in a store.
on the tag used and the environment the gates are placed in, sometimes larger values can be
achieved. It is advised to test this, before using it in a store.
Without RF Edge Detection or with RFID
We speak about 'aisle width' in this case.
When RF Edge Detection is disabled, the following recommendations are in place:
For the FL30R gate: an aisle width of 170 cm (5.6 ft.) is recommended.
For the FL45R gate: an aisle width of 200 cm (6.6 ft.) is recommended.
For the FL45R gate: an aisle width of 200 cm (6.6 ft.) is recommended.
We recommend to have a label-free zone (both RF and RFID) of more than 100 cm (3.3 ft.) from the center of
the antenna.
the antenna.