National Instruments USB-621 Series User Manual page 160

Appendix A Device-Specific Information
NI USB-621x User Manual
NI USB-6212/6216
Figure A-5. USB-6212/6216 BNC Top Panel and Pinout
+
–
Floating
Source
+
–
Ground-
Referenced
Source
A-14
AI x +
AI x –
GS
FS
5 kΩ
0.1 µF
AI GND
USB-621x Device
AI x +
AI x –
GS
FS
0.1 µF 5 kΩ
AI GND
USB-621x Device
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