The GX3104 is a 3U PXI board which provides precision DC voltage / current source and measurement capability over a range of ±20 V and ±250 mA. The GX3104 has four identical channels which are electrically isolated from the PXI power supply and share a common, isolated ground. In addition, channel 0 can supply up to 1000 mA of current and channels 1-3 can supply up to 500 mA of current. Total output current cannot exceed 1000 mA. All power for the module is derived from the PXI bus. No external, supplementary power source is required.