The 6068 is a two-channel signal conditioning amplifier-digitizer module featuring 100 kHz bandwidth and both digitized and analog outputs. The base board contains both constant voltage with remote sensing and constant current programmable excitation supplies, high bandwidth instrumentation amplifier with programmable step and variable gain, 4 Hz to 30 kHz, continuously programmable six-pole, low-pass filter and dual buffered outputs. A plug-on module configures the base board for multiple types of transducers including voltage, full and partial bridge, voltage output charge (IEPE) and charge output piezoelectric.
The input and excitation are isolated from the outputs, power and control interface. This gives the user complete freedom to ground the input without creating ground loops that introduce noise and offset errors. It also provides up to 300 Volt common mode operating voltage.
The differential instrumentation amplifier has DC or AC input coupling, programmable gains from 1 to 5,000 and automatic zero. The two analog outputs and the digitized output may be selected independently for wideband or filtered response. The digital output is provided by a successive approximation ADC at up to 200K samples per second providing excellent time alignment between channels. Voltage Substitution using an external source that is distributed to all channel inputs provides traceable gain calibration.