Identification Card Test
Method
辨識與安全科技中心
張博光經理
Content
‡ ISO 10373 Introduction
‡ Test equipment set up
‡ Proximity Card test method
„ PICC (Proximity Card, Card)
„ PCD (Proximity Coupling Device, Reader)
‡ Functional Test
‡ Conclusion
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ISO 10373 Introduction
‡ Part 6 : Proximity cards
„ ISO 14443 Protocol (< 10cm)
„ High security Card
‡ Part 7 : Vicinity cards
„ ISO 15693 Protocol (up to 1 meter)
„ Library
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Identification Cards Test Apparatus
Calibration coil
Digital Sampling
Oscillocope
Test PCD Assembly
Signal Generator (PCD)
Reference PICC
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Test equipment and test circuits(1)
‡ Calibration coil
„ At 13.56MHz the approximate inductance is 200nH and the
approximate resistance is 0.25ohm
„ Thickness : 0.76mm+- 10%
„ Corner radius : 5mm
„ The area over which the field is integrated is approximately
3000mm2
„ The size of connections pads shall be 1.5mmx1.5mm
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Test equipment and test circuits(2)
‡ Test PCD (Proximity Coupling Device) assembly
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Test equipment and test circuits(3)
‡ Test PCD Antenna tuning step 1
Match the impedance of
the signal from signal
generator to 50 Ohm
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Test equipment and test circuits(4)
‡ Test PCD Antenna tuning step 2
Tune the phase to 0 to
match the impedance of
the antenna to signal
generator (50 Ohm)
Before tuning
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Test equipment and test circuits(5)
‡ Reference PICCs
R1
L
C1
C2
R2
D1
D2
D3
D4
C3
a
b
J1
C1: Stray capacitance < 5 pF
C4
R3
VDC
Jumper settings:
J1
a: min. fieldstrength
b: max. fieldstrength
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Functional Test
‡ Function test – PICC
„ Alternating magnetic field test
„ Amplitude of the PICC load modulation signal
‡ Function test – PCD
„ PCD field strength
„ Modulation index and waveform
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Function test - PICC
‡ Catch the response of PICC
PICC under test
Connect to Osilloscope and
monitor the field strength of
PCD
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Alternating magnetic field test - PICC
‡Alternating magnetic field test
„ 10A/m rms (5 mins)
„ Remove the PICC at least 5 sec
„ 5 minutes an ASK 100% modulation to this field with the following duty
cycle
¾ 5 sec at 0 A/m rms
¾ 25 sec at 12 A.\/m rms
„ Check the PICC operates as intended
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Function test - PICC
‡ Catch the response of PICC
PCD
PICC
•We get 4 subcarrier
cycles for DFT process
• Get the Amplitude of the
PICC load modulation
signal
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Function test - PCD
‡PCD field strength
Reader
Reference PICC
‡Hmax (7.5A/m) : Maximum fieldstrength of the PCD antenna field
‡Hmin (1.5A/m) :Minimum fieldstrength of the PCD antenna field
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Function test - PCD
‡ Modulation index and waveform
Reader
Calibration coil
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Function test - PCD
‡ Modulation index and waveform
100%
90%
60%
t2
t4
t1
t3
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Conclusion
‡ Function test – PICC
„ Alternating magnetic field test
„ Amplitude of the PICC load modulation signal
¾ Determine the amplitude of PICC load modulation signal can be
detected by PCD
‡ Function test – PCD
„ PCD field strength
¾ Determine the PCD is able to supply a certain power to PICC
„ Modulation index and waveform
¾ Determine the index modulation of the PCD field as well as the
rise and fall times and the overshoot values as defined in
ISO/IEC 14443-2
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