Mounting and installation instruction
30.06.16 - 11 - 91130.docx
Rev.:1.40
General information
Reading distance
The normal reading distance depends on the reader system, the installation environment and from the data
carrier model. Information about the respective reading distances in optimal installation environment (non
metal environment), refer to the relevant data sheet of the reader. In case of mounting the reader on metal
may slightly reduce the reading distance.
Influence (reduction) of the reading distance
The reading distance can be influenced by completely different factors. On the one hand, it is influenced by
the medium (the data carrier) and on the other by the ambient conditions of the antenna and the data
carriers.
This is a list of elements that reduce the reading distance:
Shielding the data carrier by metal materials, for example, EC card in the wallet, key tag on a bunch
of keys
No optimum coupling, i.e. the antenna surface of the data carrier is vertical (90°) to the reader’s
antenna surface
Data carrier itself
- key tag (small active antenna surface)
- “poor resonance of the data carrier (IC card / key tag)
- combined ID card (e.g. LEGIC
®
/ inductive , mifare/inductive, etc.)
Metal in the “active” surface of the HF field. The transmitting energy is reduced. This point is mainly
relevant, when the reader components are integrated in metal cover plates (including metal pillars
etc.).
Electrical interference
The readers can interfere with each other or be influenced by other systems and interference sources.
The readers can interfere with each other at a distance of two to three times of the reading distance. High
energy interference sources in the area of the modulation and carrier frequencies might also disturb
transmission. We do not recommend to supply the readers through switch mode power supplies, since
superimposed frequencies on the supply voltage might also have a negative effect on the relevant reader
system. This must be checked in the individual case. It should be observed that the interference spectrum of
switch mode power supplies might be changed through parameters such as temperature, input voltage,
power to be supplied, etc.
Installation of data cables and supply cables
A sufficient cable cross-section is to be ensured for supplying the readers (in particular over larger
distances). Since power consumption of the individual systems is pulsed in some cases, short voltage dips
cannot be detected by a conventional multimeter (digital or analog). But such voltage dips might lead to a
"POWER-ON-RESET“ in the reader component, which might result in disruptions to communication.
The determination of the correct power supply and the cable cross-sections should be based on a maximum
power consumption. Care must be taken to ensure that the input voltage (measured on the reader) complies
with the technical data of the reader.
Care and cleaning instruction
The use of hard or sharp objects (rings, fingernails etc.) can cause scratches and damage the device.
Wipe the device with a soft lint-free cloth, or one that has been lightly dampened with water.
The use of caustic liquids such as benzene, thinners, alcohol, solvents, or any kind of abrasive cleaners
will lead to surface deterioration and damage.
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