Omron V680S Series User Manual page 219

V680-D1KP66T-SP
 Influence of Metal at Back Surface
The communications range will decrease if there is metal at the back of the V680-D1KP66T-SP RF
Tag. If the RF Tag is mounted on metallic material, use a non-metallic spacer (e.g., plastic or resin).
The following graphs show the relationship between the distance from the RF Tag to the metallic
surface and the communications range.
V680S-HMD64-ETN and V680-D1KP66T-SP
(%)
100
90
80
70
60
50
40
30
20
10
0 20 40 60
Distance (x) to the metal plate in back of RF Tag
Reader/Writer
Y
Communications
range
Metal
Non-Metallic material
80 100 120 140 (mm)
RF Tag
Metal on back
X
V680S-HMD66-ETN and V680-D1KP66T-SP
(%)
100
90
80
70
60
50
40
30
20
10
0 20 40 60 80
Distance (x) to the metal plate in back of RF Tag
Reader/Writer
Y
Communications
range
Metal
Non-Metallic material
Section 8
Appendices
100 120 140 (mm)
RF Tag
Metal on back
X
RFID System
User's Manual
217