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Connecting the Reader
Input 1
Input 2
Input 3
Input 4
Input 1
Input 2
Input 3
Input 4
INP_CMN
+UB_extern
GND_extern
Fig. 14: DC-isolated inputs
Input 1
Input 2
Input 3
Input 4
Input 1
Input 2
Input 3
Input 4
INP_CMN
+UB
GND
Fig. 15: Inputs, not DC-isolated
