Omron V680 Series User Manual page 140

Section 7
Appendices
Influence of ID Tag Angle (Reference)
Install Antennas and ID Tags as close to parallel to each other as possible.
Communications are possible even when an Antenna and an ID Tag are mounted at an angle, but the
communications distance will be shortened. The relation between the angle and the communications
distance is shown below.
Reduction in Communications Distance for V680-D2KF67M Angle
V680-HS52 and V680-D2KF67M
V680-HS63 and V680-D2KF67M
V680-HS65 and V680-D2KF67M
Measurement Conditions
V680-HS52 and V680-D2KF67M
Antenna
V680-HS65 and V680-D2KF67M
Metallic
material
RFID System
138
User's Manual
0%
(Metal on back: Steel)
0%
(Metal on back: Steel)
0%
(Metal on back: Steel)
(Metal on back: Steel)
θ
ID Tag
(Metal on back: Steel)
θ
ID Tag
Antenna
ID Tag angle (θ°)
0 10
−1%
−2%
−2%
V680-HS63 and V680-D2KF67M
Non-metallic
material
20 30
−2% −4%
−5% −8%
−7% −16%
(Metal on back: Steel)
θ
ID Tag
Antenna
40
−6%
−14%
−31%