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Description
Advanced microelectronics are packed within a miniature connector to provide complete
conditioning of MicroStrain's DVRT® sensors.
The DEMOD-DC® makes inductive position sensors as easy to use as a potentiometer.
With integral signal-conditioning electronics, the user connects power, ground and
analog out, and the DEMOD-DC® outputs a voltage proportional to linear position.
The high-level analog-output voltage is digitally trimmed under microprocessor control
during the manufacturing process. This insures that every DVRTs® offset and gain
values match one another. This allows DVRTs® to be used interchangeably in industrial
automation and OEM applications.
DEMOD-DC® cards will operate from a wide range of DC excitation voltages.
They feature an input supply line that is internally regulated and reverse input
protected, as well as a buffered, high-frequency response analog-output voltage.
How it works
Operating from a DC power supply, the DEMOD-DC® filters incoming transients
from the line voltage, and supplies a sine wave excitation to the transducer. This
excitation is used to measure minute impedance changes of the sensing elements.
Precision demodulator components provide rectification and differential amplification. Digital trimming insures conformity from sensor to sensor. The analog output
is filtered and buffered to provide clean, high level signals.
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