Omron V680-HAM42-DRT User Manual page 108

Section 6
Appendices
V680-D8KF67/-D32KF68
Effect of Surrounding Metals (Reference)
•Special Attachment (V680-A81) Installation Direction
Spring washer
Flat washer
● V680-HS63 and V680-D8KF68/-D32KF68
(%)
100
90
80
70
60
50
40
30
20
10
0
RFID System
106
User's Manual
M4 screw
The transmission distance will be reduced if there is metal in back of
a Tag. When mounting on a metal surface, use the special
Attachment (V680-A81) of another sales or insert a non-metallic
spacer (e.g., plastic, wood, etc.).
When Attachment (V680-A81) is used
When Attachment (V680-A81) is not used
10 20 30
Distance to metal (x)
Attachment
Antenna
Y
Communica-
tions
distance
Tag
X
● V680-HS65 and V680-D8KF68/-D32KF68
(%)
When Attachment (V680-A81) is used
100
90
80
70
60
50
40
30
20
10
40 0 10
(mm)
When Attachment (V680-A81) is not used
20 30 40
(mm)
Distance to metal (x)
Antenna
Attachment
Y
Communica-
tions
distance
Tag
X