User manual

Tips
Using the Independently Floating Isolated Inputs
6
79
ANAL
OG
INPUT DI
G
ITAL
CO
NTR
O
LLER
ANALOG
GROUND
DIGITAL
GROUND
A
D
Figure 37. Correct connection of reference leads
A
NAL
OG
INPUT DI
G
ITAL
CO
NTR
O
LLER
ANALOG
GROUND
DIGITAL
GROUND
A
D
Figure 38. Wrong connection of reference leads
Noise that is picked up by reference lead D can be
transmitted by parasitic capacitance to the analog input
amplifier.