Measurement-computing PC104-DAS16JR/12 Manuel d'utilisateur télécharger pdf (Page 13)

A floating differential hookup is handy when the signal source is floating with respect

to ground, such as a battery, 4-20 mA transmitter or and the lead lengths are long or

subject to EMI interference (Figure 2-5).

Figure 2-5. Floating Source Differential Input

The floating differential input will reject up to 10V of EMI energy on the signal wires.

WARNING

Check it with a ohmmeter to determine that the signal source really

floating before risking the board and the PC!

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Measurement-computing PC104-DAS16JR/12 Manuel d'utilisateur Page 13