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9-2
Section
Influence of a Metal Surface behind the Antenna
139
V700-H02 Antenna
Max. communications distance (mm)
Long-distance mode
Stable communications mode
Noise level (read by the Programming Console)
250
200
150
100
50
0
0
10
20
30
40
60
70
80
90
50
9-2
Influence of a Metal Surface behind the Antenna
The Antenna is influenced by background metal.
The communications area of the Antenna will be reduced if there is metal (the
same size as the Antenna) behind the Antenna. The reduction of the commu-
nications area depends upon the distance between the Antenna and metal sur-
face, as shown in the following diagrams.
Communications with a V700-D
j
3P21(-Y) or V700-D
j
3P31(-Y) ID Tag
V700-H01 Antenna
V700-H01
Metal: Steel (SPCC)
Max. communications distance (mm)
Long-distance mode
Stable communications mode
V700-H01
Metal: Aluminum
Distance between background metal and Antenna (mm)
Max. communications distance (mm)
Long-distance mode
Stable communications mode
Distance between background metal and Antenna (mm)
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