Patent ID: 6275043
Filing Date: 2001-08-14
Classification: G01R,G06K

Abstract:
A test device (1) which is arranged to carry out at least one test operation on a module (2) which is constructed for use in conjunction with a data carrier intended for contactless communication and includes an integrated component (4), two module terminals (5, 6) for connection to two transmission means terminals, and includestwo test terminals (12, 13), each of which can be brought into contact with a module terminal (5, 6) of a module (2) to be tested, and includesa carrier signal generator (14) whereby a carrier signal (CS) can be generated, and includesa signal path (33) which is situated between the carrier signal generator (14) and at least one test terminal (12) and via which a test signal (TS), corresponding to a carrier signal (CS) output by the carrier signal generator (14), can be applied to the at least one test terminal (12), the load modulation means which are included in the integrated component (4) of the module (2) to be tested being capable of load modulating the test signal (TS) when module terminals (5, 6) of a module (2) to be tested are in contact with the test terminals (12, 13), characterized in thatthe signal path (33) is constructed so as to be conductive,that an impedance (31) is included in the signal path (33), directly ahead of the at least one test terminal (12), andthat at least one detection device (34, 35) is connected to at least one test terminal (12), which detection device is arranged to determine, while utilizing the test signal (TS) that can be applied to the at least one test terminal (12), an analog characteristic value (C, m) of a module (2) to be tested which is in contact with the test terminals (12, 13) by way of its module terminals (5, 6).