User's Manual

Chapter 3 Connecting the Signals
© National Instruments Corporation 3-5 DAQCard-1200 User Manual
How you connect analog input signals to the DAQCard-1200 depends on
how you configure the card analog input circuitry and the type of input
signal source. With different DAQCard-1200 input modes, you can use the
instrumentation amplifier in different ways. Figure 3-2 shows a diagram of
the DAQCard-1200 instrumentation amplifier.
Figure 3-2. DAQCard-1200 Instrumentation Amplifier
Table 3-2.
Bipolar and Unipolar Analog Input Signal Range Versus Gain
Gain Setting
Input Signal Range
Bipolar Unipolar
1 ±5 V 0to10V
2 ±2.5 V 0to5V
5 ±1 V 0to2V
10 ±500 mV 0to1V
20 ±250 mV 0to500mV
50 ±100 mV 0to200mV
100 ±50 mV 0to100mV
V
m
=[V
+
in
V
in
] GAIN
V
+
in
V
in
Instrumentation
Amplifier
Measured
Voltage
V
m
+
+