IBM AR-B3001, Руководство пользователя, Страница: 32 / 41

ACROSSER TECHNOLOGY
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+
-
+
_
+ -
Vcm
AG
Analog Ground
AR-B3001
Signal Source
Ground
Amplifier
Vs
+
_
Vin = Vs + Vcm
Incorrect
Figure 4-3 Incorrect method for connecting a grounded
signal to differential input
If you have combinations of signals in your application,
the 8-channel differential input configuration should be
used. To connect a floating signal source to the differential
input, connecting a jumper wire between negative and
analog ground of AR-B3001 effectively turns the
differential input into a single-ended input. Figure 4-4
shows how to connect a floating signal source to the
differential input.
+
-
+
_
AG
Analog Ground
AR-B3001
Amplifier
Vin = Vs
Vs
+
_
Floating
Signal
Figure 4-4 Connecting a floating source to a differential
input