
6.2.7 Isolated Grounds / Differential Inputs
Optimum performance with isolated signal sources is assured with the use of the dif-
ferential input setting. The diagram below shows the recommend connections is this
configuration..
26
+
-
Input
Amp
To A /D
A/D Board
I/O
Connector
LL GND
CH High
CH Low
Signal Source
and A/D Board
Already Isolated.
Already isolated signal source
and A/D board connected to
a differential input.
GND
These grounds are
electrically isolated.
10 K
10K is a recommended value. You may short LL GND to CH Low
instead, but this will reduce your system’s noise immunity.
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