Quest’s new VI-400Pro® Advanced Analyzer is a powerful handheld device ideal for field use even in the most challenging environments. The analyzer monitors up to four input channels simultaneously, each including 1/1 or 1/3 real-time octave band data. The unit is configurable for occupational hand-arm and whole body vibration, with a fourth input channel for sound or an additional single axis for vibration exposure assessment. Quest Technologies, Inc., Oconomowoc, WI.