Casio V-T500-E Hardware Manual page 53

Scanning condition
Contactless Smart Card (ISO14443 Type A/B, Felica)
Table 3.26 Condition
Minimum operating magnetic filed
Direction
Angle
Range
Distance
Style
Range of Magnetic field strength is 1.5A/m over.
Front
Figure 3.3
Rear
Figure 3.4
1.5A/m over
Parallel direction with display panel
Parallel with display panel
See Figure 3.3, Figure 3.4
0mm (Contact with case)
ISO7810(JISX6301) standard card's style
15mm
54mm
reference PICC
＋
86mm
53
reference PICC
TP
GND
15mm