National Instruments NI 447 Series User Manual page 22

Chapter 2 Using the NI 447X
NI 447X User Manual
Figure 2-2. NI PCI-4474 Front Panel
Before configuring the AI channels and making signal connections,
you must determine the following:
• Whether the input signal source is floating or grounded
• Whether the accelerometer or microphone you are using requires
IEPE current stimulation
CH0
CH1
CH2
CH3
EXT
TRIG
NI PCI-4474
2-6 ni.com