Siemens SIMATIC RF200 System Manual page 28

Planning the RF200 system
4.1 Fundamentals of application planning
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Figure 4-1
The figure below shows the transmission window of the SIMATIC RF240R and SIMATIC
RF260R readers between transponder and reader:
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Operating distance between transponder and reader
Limit distance (maximum clear distance between upper surface of the reader and the tran-
sponder, at which the transmission can still function under normal conditions)
Diameter of a transmission window
Intersection of the axes of symmetry of the transponder
RF210R/RF220R transmission window
System Manual, 07/2017, J31069-D0227-U001-A9-7619
SIMATIC RF200