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2 | NFC ISO/IEC 15693 vicinity reader / tag capture with demodulation | |
3 | ------------------------------------------------------------------------------- | |
4 | ||
5 | This is an example of an NFC ISO/IEC 15693 vicinity reader / tag capture | |
6 | with demodulation. | |
7 | ||
8 | ||
9 | Hardware setup for the capture | |
10 | ------------------------------ | |
11 | ||
12 | * HydraBus v1.2 + HydraNFC Shield v1.1 | |
13 | * Using firmware HydraFW (HydraBus) v0.9-beta-92-g3c34dfd 2019-10-12 | |
14 | Tag ISO/IEC 15693 Vicinity ICODE SLI/SLIX (uID RW) | |
15 | * CH1 connected to HydraBus/HydraNFC PA5 | |
16 | * Capture HydraNFC reader clock 13.56MHz | |
17 | * CH2 connected to “Calibration Coil ISO 10373-6” | |
18 | * Capture NFC signal between NFC Reader & NFC Vicinity Tag | |
19 | * Impedance Adapter 50 Ohm (also called Rigol Impedance Adjuster 50 Ohm) | |
20 | used on CH2 with "Calibration Coil ISO 10373-6" | |
21 | * PL-50 (50 Ohms +/-1%, 2 WATT, DC - 1GHz) | |
22 | * PicoScope 3406DMSO (8bits @ 1 GS/s, Memory 512MS) | |
23 | * Picoscope v6.x software on Windows 7 SP1 64bits | |
24 | ||
25 | NFC ISO/IEC 15693 Vicinity read UID capture was demodulated with an Octave | |
26 | script which creates CH3 & CH4 and all channels are displayed with PulseView. | |
27 | ||
28 | ||
29 | Capture details | |
30 | --------------- | |
31 | ||
32 | CH1: connected to HydraBus/HydraNFC PA5 (capture HydraNFC reader Clock 13.56MHz) | |
33 | CH2: connected to "Calibration Coil ISO 10373-6" (capture NFC signal between Reader & Tag) | |
34 | CH3: clock reconstructed from CH1 / CH2 to decode CH4 | |
35 | CH4: filtered data envelope reconstructed from from CH1 / CH2 |