Vansco VMM3120, User Manual

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18 VMM3120
Inputs
The following diagram shows the configuration for analog inputs:
Figure 7: Analog input configuration
3.2.3. Analog Input Installation Connections
When connecting analog inputs, be aware of system noise and ground level shift.
System Noise
Analog inputs are more susceptible to system noise than digital inputs. Too much
system noise can create inaccurate analog input readings.
To reduce system noise

Use the shortest possible wires when connecting sensors to analog inputs, to
prevent noise pickup on the sensors.