National Instruments NI DIDS-2103, User Manual

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3.3.3.6 VR and Digital Signals to NI 9760
Input Channels used for VR Sensor Inputs
Each VR sensor input requires two connections. The VR Hall module pins labeled IN 1+ through IN 6+ are the positive sensor
inputs. The negative sensor inputs must be connected module pins labeled IN 1- through IN 6-.
The VR Hall module provides up to six identical VR sensor inputs. A Variable Reluctance (VR) sensor is a standard
production automotive speed sensor. It is an electro-magnetic sensing device containing a winding of wire around
a permanent magnetic core. It relies on the movement of ferrous material (steel teeth) past the tip of the sensor to
change the magnetic flux of the sensor. This creates a voltage pulse across the leads of the sensor's wire coil. Refer
to the Digital and VR/Hall Input Setup Window and the NI 9760 User Manual for more information.
Input Channels used for Digital Sensor Inputs
The VR Hall module provides up to six identical digital sensor input circuits which can be used for hall-effect sensors. When
using hall sensors, the ground of the sensor should be connected to the IN - side of an input channel and one of the GND pins.
Optionally, the DIP switches inside the module can be used to connect the IN- side of an input channel to GND.
Refer to the
Digital and VR/Hall Input Setup Window and the NI 9760 User Manual for more information.