MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL
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5-5.
Connection of Triaxial Sensors
Many triaxial resistive bridge sensors have shared excitation lines, and other types of sensors may have shared power
and ground lines. The V EXC, SENSE, or SIG GND lines for each channel may be tied together, however it is
recommended that when doing so the excitation settings for each channel be identical for optimum performance.
Appendix A: Differential MEMS Sensor Setup Guide for Model 482C27
In order to setup model 482C27 for use with differential MEMS sensors (such as PCB® model series 3501, 3503, 3641,
3651, 3741 and 3991) apply the following settings through the front panel control keypad:
1) Input Mode Select (INPT on front panel):
Set sensor input type to Differential Voltage.
2) Gain Type (GType on front panel):
Set the gain type to GAIN.
3) Gain (GAIN on front panel):
Set signal conditioner channel gain to 1 on all channels connected to a MEMS sensor.
4) Coupling (ACDC on front panel):
Set signal conditioner input coupling to DC.
5) Voltage Excitation (EXCv on front panel):
Set the excitation voltage to sensor to 10.00 and unipolar (UNI).
All other settings can be ignored. With these settings, the output scale factor on each channel will be equal to the
calibrated sensor sensitivity, which can be read directly from the calibration certificate for any particular sensor. Other
scale factors can be achieved by adjusting the gain directly.
If using MCSC Control Software for setup, the recommended settings are shown in Figure A1 below.
Figure A1 Settings for Differential MEMS Sensors
