Data Acquisition (DAQ)
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We no longer use DAQ. This page is here for historical reference only.
General Topics
Hardware
Solenoids, LN2
Grounding
The Chassis all use a floating ground. The chassis case itself is true ground, which is a different second ground. Our 2-prong 12V power supply is also a floating ground, which is the reason it doesn't have a ground prong. For the most part, we don't need to worry about ground. There are only a few specific situations that require a true ground:
-All 3-prong plugs must be connected to proper 3-prong outlets with quality building ground.
-Chassis cases should be connected to that same true ground by a green wire running to the UPS. This is just for safety.
-Be aware of static buildup on yourself and any equipment. Learn to always dissipate static before working on the box internal wiring.
-Shielding around cables must always be grounded. This grounding is most frequently incorporated into the connectors on each end.