CHIPDRIVE CLOUD 4700F 905511 数据表

 

The communication between the reader and the user credential is sensitive to the presence of 
material or objects interfering with the magnetic field generated by the reader. 

The presence of conductive materials like metal in the vicinity of the reader and the user 
credential can significantly degrade the communication and even make it impossible. The 
magnetic field of the reader generates Eddy or Foucault’s currents in the conductive materials; 
the field is literally absorbed by that kind of material.  



 

It is recommended for proper communication to avoid putting CLOUD 47x0 F 
in close proximity of conductive materials.  

 

The presence of multiple user credentials in the field also interferes with the communication. 
When several user credentials are in the field of the reader, load of the field increases which 
implies that less energy is available for each of them and that the system is detuned. For this 
reason, Identive has implemented in its driver only one slot.  



 

It is recommended to present only one user credential at a time in front of 
CLOUD 47x0 F. 

 

The communication between the reader and the credential is sensitive to the geometry of the 
system {reader, credential}. Parameters like the geometry and especially the relative size of the 
reader’s and credential’s antennas directly influence the inductive coupling and therefore the 
communication. 

CLOUD 47x0 F was designed and optimized to function with user credentials of various 
technologies and sizes. 



 

It may happen, that CLOUD 47x0 F is not capable of communicating with 
extremely large or extremely small credentials. 



 

In order to optimize the coupling between the reader and the credential, it is 
recommended to put both antennas as parallel as possible to each other 



 

In order to optimize transaction speed between the reader and the card it is 
recommended to place the credential as close as possible to the reader. This 
will increase the amount of energy supplied to the user credential which will 
then be able to use its microprocessor at higher speeds 

 

CLOUD 4700 F is a transparent reader designed to interface a personal computer host 
supporting PC/SC interface with 13.56MHz user tokens like public transport cards, contactless 
banking cards, electronic identification documents – e.g. e-passports, e-ID cards, driving 
licenses etc. and smartcards according to ISO7816 as well as synchronous memory cards like 
CAC and PKI cards and health insurance cards. 

User credentials can have several form factors like credit cards, key fobs, NFC mobile phones 
or USB dongles like our SCTxxxx or @MAXX products. 

CLOUD 4710 F incorporates a SAM slot for SIM-sized cards instead of the standard card slot 
for ID-1 sized cards of the CLOUD 4700 F.