NL143 – Three Channel Difference Amplifier
The NL143 is a 3-channel difference, or differential, amplifier with 4-channels of input. Internal selection allows the difference between any of the four input channels to be made. Internal preset controls (finger operated) allow an offset to be nulled or added as required. High input protection allows for signals coming from units that are not part of the NeuroLog System. This module allows the difference between two signals of interest to be continuously monitored, but can also be used to null DC offsets introduced by computer DAC interface cards.