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2-15
IM 701210-05E
Explanation of Functions
2
2.2 Setting the Horizontal and Vertical Axes
Acceleration Measurement <Section 5.18>
The Acceleration Module (with AAF) (701275 (ACCL/VOLT)) measures acceleration
using the output signal from the acceleration sensor. Direction connection is possible to
a built-in amplifier type acceleration sensor. (Direct connection is not possible to a
charge output type acceleration sensor that does not have a built-in amplifier. For details
on the connection of the acceleration sensor, see section 3.12.)
Note
The 701275 (ACCL/VOLT) can also measure voltage.
Current Supply to Acceleration Sensors
The 701275 (ACCL/VOLT) can supply 4 mA of current to the acceleration sensor when
measuring acceleration.
Note
If you supply current to the acceleration sensor before it is connected to the item under
measurement, the internal circuit of the acceleration sensor may be damaged. Be sure to
supply current after connecting the acceleration sensor.
Filter
If you set the bandwidth limit to Auto, the anti-aliasing filter (AAF) and low-pass filter are
enabled depending on the sample rate to eliminate high-frequency noise from the input
signal. Using the anti-aliasing filter when measuring voltage allows elimination of
aliasing noise resulting from FFT computation, digital filter computation of DSP channels,
etc. For details on the bandwidth limit, see section 5.7.
Note
The filter is effective not only during acceleration measurement but also during voltage
measurement.