HID Global Corporation VERICLASS Manuale Utente
veriCLASS Hardware Specification VP3500 Reader Board, 3500-906
5
RF Interface
The VP3500A00 reader board offers one integrated antenna compliant with the EMV Contactless
requirements. The tuning is optimized for operation with ISO/IEC14443 Type A & B credentials.
requirements. The tuning is optimized for operation with ISO/IEC14443 Type A & B credentials.
5.1
Operating Field Strength
The magnetic field strength was measured in accordance to ISO/IEC10373-6 (16.5MHz resonance
frequency of reference PICC).
frequency of reference PICC).
The measurements were taken for a concentric arrangement between reference PICC and test PCD
in four different distances.
in four different distances.
The field strength may vary slightly between different reader boards due to production tolerances.
Note: Metal or ferrite material in proximity of the antenna will lead to detuning effects, which may
cause major changes in the RF properties.
cause major changes in the RF properties.
Table 6: Field Strength
Distance [mm]
2 7.5 12 20
H [A/m]
6.27 5.83
5.38 4.29
1.5
2.5
3.5
4.5
5.5
6.5
7.5
0
5
10
15
20
25
Distance [mm]
H [A/
m
]
Figure 5: Operating Field Strength
Page 16 of 28
March 2011
© 2011 HID Global Corporation. All rights reserved.