User's Manual

156
Section 7 Reference Data
RFID System
User's Manual
Section 7
Chemical Resistance
 V680-D2KF67
 Effect of Metal behind Tags (Reference)
The V680-D2KF67 communications distance is reduced if there is any metal material behind the Tag.
 Mutual Interference with Tag (Reference)
To prevent malfunctioning due to mutual interference when using more than one Tag, leave sufficient
space between them as shown in the following diagram.
• V680-HS52 &V680-D2KF67
10 20 30 40 50 (mm)
0
50
70
Distance to metal (x)
60
40
30
20
10
90
(%)
100
80
The communications distance without metal is 100%
• V680-HS63 &V680-D2KF67
10 20 30 40 50 (mm)
0
50
70
Distance to metal (x)
60
40
30
20
10
90
(%)
100
80
The communications distance without metal is 100%
• V680-HS65 &V680-D2KF67
10 20 30 40 50 (mm)
0
50
70
Distance to metal (x)
60
40
30
20
10
90
(%)
100
80
The communications distance without metal is 100%
ID Tag
Metal on back
Antenna
Communica-
tions
distance
Y
X
ID Tag
Metal on back
Antenna
Communica-
tions
distance
Y
X
ID Tag
Metal on back
Antenna
Communica-
tions
distance
Y
X
Metal
200mm min.
200mm min.