Omron V680-CA5D01-V2 User Manual page 34

To reduce the influence of radiated noise, use a ferrite core.
Use the following procedure.
1.
Wire the power supply and ground lines as normal.
2.
Wrap the power supply lines and ground line together around the ferrite core. Loop them around the
ferrite core once so that the ferrite core does not move. The ferrite core should be within 10 cm of the
ID Controller.
3.
Close the ferrite core until you hear it click into place.
Installation, Connections, and Wiring
Ferrite core
SECTION 2
RFID System
31
User's Manual