Omron V680-HAM91 User Manual page 154

Section 7
Appendices
Influence of RF Tag Angle (Reference)
Install Antennas and RF Tags as parallel to each other as possible.
Communications are possible even when an Antenna and an RF 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-D2KF52M Angle
V680-HS51 and V680-D2KF52M
V680-HS51 and V680-D2KF52M
V680-HS52 and V680-D2KF52M
V680-HS52 and V680-D2KF52M
V680-HS63 and V680-D2KF52M
---: Measurement is not possible because Antenna and RF Tag would strike each other.
Measurement Conditions
V680-HS51 and V680-D2KF52M
Steel
Antenna
Toothed
washer
V680-HS52 and V680-D2KF52M
Antenna
V680-HS63 and V680-D2KF52M
Antenna
Metallic material
RFID System
152
User's Manual
(Metal on back: Steel)
(Metal on back: Steel)
Nuts
RF Tag
Non-metallic
θ
material
RF Tag
Non-metallic
θ
material
RF Tag
Non-metallic
material
θ
RF Tag angle (θ°)
0 10
−2%
0%
0% 0%
0% 0%
−2%
0%
0% 0%
V680-HS51 and V680-D2KF52M
Antenna
Toothed
washer
V680-HS52 and V680-D2KF52M
Antenna
20 30
−6%
-−
−7%
0%
−2%
0%
−7%
---
−1% −4%
(Metal on back: Steel)
Steel
Nuts
RF Tag
Steel
θ
(Metal on back: Steel)
RF Tag
Steel
θ
40
−22%
−30%
−5%
---
−9%