Omron V680S Series User Manual page 239

V680S-D2KF68
 Influence of Metal at Back Surface of RF Tags
The communications range will decrease if there is metal at the back of the V680S-D2KF68 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 V680S-D2KF68
Distance (x) to the metal plate in back of RF Tag
Reader/Writer
Y
Communications
range
Metal
Non-Metallic material
RF Tag
Metal at back surface
X
V680S-HMD66-ETN and V680S-D2KF68
Distance (x) to the metal plate in back of RF Tag
Reader/Writer
RF Tag
Y
Communications
range
Metal
Non-Metallic material
Section 8
Appendices
Metal at back surface
X
RFID System
237
User's Manual