Omron V680-HAM91 User Manual page 152

Section 7
Appendices
Influence of RF Tag Angle (Reference)
The maximum communications distance can be obtained when the Antenna and RF Tag are installed
in parallel. When the RF Tag is installed on an angle, the communications distance is reduced. Con-
sider the effect of the RF Tag angle when installing the RF Tag. As reference data, the following dia-
gram shows the rate of reduction in communications distance according to the RF Tag angle. The
horizontal axis indicates the angle when the RF Tag surface and Antenna surface are in parallel at 0°.
The vertical axis indicates the relative communications distance when the angle is 0° at 100%, i.e., the
rate in reduction of the communications distance.
Percentage Drop in Communications Distance According to Angle of V680-D1KP58HTN
V680-HS65 and V680-D1KP58HTN
Measurement Conditions
• V680-HS65 and V680-D1KP58HTN
V680-D1KP58HTN
V680-HS65
RFID System
150
User's Manual
RF Tag angle (θ°)
0 10 20 30
0% 0% -1% -1%
40 50 60 70
-2% -3% -6% -11%
80 90
-19% -32%