5.3.6
Isolated Grounds / Single-Ended Inputs
Single-ended inputs can be used to monitor isolated inputs, though the use of the differential mode will increase you system’s noise
immunity. The diagram below shows the recommended connections is this configuration.
Figure 5-9. Isolated Ground - Single-Ended input
5.3.7
Isolated Grounds / Differential Inputs
Optimum performance with isolated signal sources is assured with the use of the differential input setting. The diagram below shows
the recommend connections is this configuration.
Figure 5-10. Isolated Grounds - Differential Input
-11-
Iso lated S ignal S ource
C onne cte d to a S ingle-E nd ed Inpu t
I/O
C o n n e ctor
+
-
Inp ut
A m p
To A /D
LL GN D
CH IN
A /D B o a rd
Iso lat
ed
s
ig na l
so
urce
+
-
In p u t
A m p
To A /D
A /D B o a rd
I/O
C o n n e c to r
LL G N D
C H H igh
C H L ow
S ign a
l S o u
rce
an d A
/D B o
a rd
A
lrea d y
Iso la
ted .
A lrea d y iso la te d sig n a l so u rce
a nd A /D b oa rd co n n ec ted to
a diffe re n tia l in pu t.
G N D
T he se g ro u n ds are
e le ctrica lly isolate d .
1 0 K
1 0 K is a re c o m m e n d e d v a lu e . Yo u m a y s h o rt L L G N D to C H L o w
in s te a d , b u t th is w ill re d u c e yo u r s y s te m ’s n o ise im m u n ity.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
