Detailed features: MODEL i330 INSTRUNET OPTICAL ISOLATOR
The Model 330 Electrical Isolator provides 1000 Volts of optical isolation at one point within an instruNet network. This is often used to eliminate ground loops between the computer and items under test, and to reduce noise that is transmitted from the computer to sensors. When measuring small voltages (e.g. <10mV), optical isolation is sometimes critically important. Multiple Model 330's can be placed in one network (e.g. place one Model 330 every 2 Devices, in an 4 Device network).
The i240 USB controller requires two i312 power supplies when working with the i330 (Rev 2), since each side of the i330 optical isolator requires power,