HID Hi-O iCLASS Installation Guide - Manual (Page 15)

iCLASS OEM75 Integration Guide, 3141-907, Rev. B.0
January 2014 Page 15 of 49
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It should be recognized that mounting the loop antenna in close proximity to a metallic ground plane
reduces the effective range of the card reader. If such a mounting is required it is recommended
that the metallic ground plane have slots cut in it to reduce the generation of eddy loop currents.
• The following diagrams provide examples of Air-tuned Antenna’s.
4.3.1 Antenna Model 3142
Figure 4-4: 3142 A16 Antenna
4.3.2 Antenna Model 3144
Figure 4-5: 3144 A9 Antenna