As a payment terminal designer I would like to perform load modulation sensitivity tests when using MP500 TCL3 signal generator with EMVCo reference antennas to adjust the sensitivity of my reader before validation test.
In Near Field Communication (NFC), during a contactless communication between a reader and a passive device like a contactless smartcard, the smartcard is load modulating the carrier of the reader to answer to reader command. This is the Load Modulation Amplitude (LMA) principle.
For proper NFC exchange, any reader shall be able to understand answers with LMA values between minimum and maximum values.
For reader designers, adjusting the sensitivity of the reader to LMA is challenging and it is
crucial to be able to perform Load Modulation Amplitude sensitivity tests.
When using MP500 TCL3 signal generator it is quiet simple to perform load modulation sensitivity tests
thanks to the card emulation features of the device and the script editor plugin of MPManager.
Indeed, it is possible to adjust the voltage level of the signal that will be applied by the MP500 TCL3 signal generator to simulate a card answer.
Depending on the antenna used and the voltage applied at the Mod In connector of a given simulation antenna, the Load Modulation Amplitude seen by a reader under test will be high enough or not for the reader to send the next command.
In the next steps moving forward, we will be focused on Load Modulation Amplitude sensitivity tests for payment terminals following EMVCo test specification.
In particular, how to Generate Load Modulation Amplitude equivalent to Vs1pp or Vs2pp values defined by EMVCo with a MP500 TCL3 Signal Generator?