Reference Manual for the CLOUD 370x F Contactless Desktop Readers
Document Version 1.0
Last revised on 2014-07-22
Page 14 of 82
3.4:
Customization Options
Upon request and based on a minimum order quantity, Identiv can consider customizing the reader’s:
•
Product label
•
Identification text strings
•
Logo
•
Casing colors
For more information about customizing this product, please contact your local Identiv representative
or send an email to
.
3.5:
Contactless Communication Principles and CLOUD 370x F Usage
Recommendations
The CLOUD 370x F is a contactless reader
1
designed to communicate with user tokens, which are also
known as user credentials. User tokens
2
contain a contactless integrated circuit card connected to an
antenna.
User tokens can take several form factors, including:
•
Credit card sized smart card
•
Key fob
•
USB token
•
NFC mobile phone
Communication between a CLOUD 370x F reader and user credentials uses magnetic field inductive
coupling. The magnetic field generated by a CLOUD 370x F reader has a carrier frequency of
13.56 MHz.
3.5.1:
Power Source for the User Credential
When the user credential is placed within the magnetic field of the reader, its antenna couples with the
reader and an induction current appears in the credential’s antenna, thus providing power to the
integrated circuit. The generated current is proportional to the magnetic flux going through the
antenna of the user credential.
3.5.2:
Data Exchange
The carrier frequency of the magnetic field is used as a fundamental clock signal for the communication
between the reader and the credential. It is also used as a fundamental clock input for the integrated
circuit microprocessor to function.
To send data to the user credential, the reader modulates the amplitude of the field. There are several
amplitude modulation and data encoding rules defined in ISO/IEC 14443, which you can refer to for
further details.
To answer the reader, the integrated circuit card of the user credential modulates its way of loading
(impedance) the field generated by the reader. Further details about this can be found in ISO/IEC
14443.
1
In the ISO/IEC 14443 standard, the reader is called the proximity coupling device (PCD).
2
In the ISO/IEC 14443 standard, the user token is called proximity integrated chip card (PICC).
CLOUD
370
x F
User tokens
CLOUD 370x F
