User's Manual

RS232-Transponder Reader
(SECS1-Protocol), Release 0.3 Draft Page 5 of 91
2000-09-29
ID: ID000093
1 System Description
The HERMOS Transponder Reader System is a high frequency identification
system using the FM-transmission.
The basic item is a transponder working as a forgery-proof electronic identity disc.
The reading unit of the system sends an energy impulse via the antenna. The
capacitor of the passive, battery-less transponder is charged by this impulse. After
that, the transponder returns a signal with the stored data.
The total reading cycle takes less than 100 ms.
As a sight-connection between transponder and reader is not absolutely necessary,
the transponder can also be identified through non-metallic material.
The data received by the transponder reader are transmitted via the serial interface.