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ManualsBrandsAgfa Gevaert ManualsElectronicsCirrus RFID reader
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Confidential Page 3 of 3 06/07/2011
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Medical Imaging
RDE
Additional restrictions are that:
1. the reader cannot be sold to external parties, that is, it is restricted to company-
internal products
2. the reader cannot be standalone, that is, a declaration of conformity (DoC) is not
possible – note that the reader as standalone unit cannot function (per definition)
Host application integration recommendations
The recommendations are based on laboratory measurements, electromagnetic solver
simulations and FCC radio type testing experience/measurements.
When integrating the reader (A800626) into an application the user should respect the
following instructions:
1. Metal parts (of the enclosure) and wiring (of the cable harness) should be kept at
a reasonable distance from the reader. As the reader distance (reader to tag) is
of the order of 25mm it is recommended to respect at least the double or triple of
this value (50 to 75mm or more).
2. Limit the integration of the reader cable into the wiring harness of the application
and if this is not possible then limit the coupling length to values below 50cm or
use dielectric spacers to have at least 5mm spacing between the reader cable
and other cables (= 3 times the reader cable wire pitch).
3. The reader cable length should be limited to 120cm.
4. If the reader is used for reading tags on X-ray cassettes then the plane of the tag
should be near the plane of the (copper or lead) foil used and both planes need
to be parallel. The center of tag and reader coils need to be aligned for proper
operation. Note that the foil does not necessarily decrease the coupling between
the reader and tag and does not changes the electromagnetic behavior of the
inductive field, the magnetic field distribution is only altered in space. This is
confirmed in measurements and simulations (using FastHenry, a magnetic field
solver) at the carrier frequency.
END of Document