Down Sampler; Function Generator - HBM SomatXR CX23-R User Manual

4 Setting up and running a test
Example: Rotary encoder
The Directional velocity computed channel is designed to generate a signed angular velocity output channel for a rotary
encoder. In this example, the velocity channel is typically the A or B signal lines from a DIO frequency channel. The
direction channel is typically either a DIO quadrature direction channel for a signed channel, or a DIO quadrature count
channel for a position channel.
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Direction channel: Set the direction channel. In the edit dialog, the channel
sample rate is displayed in Hz.
NOTE
When viewing the All computed channels tab, the Input channel is the velocity
channel. To display both input channels, view the Directional velocity tab.
Direction channel is a sign channel: Select this option if the direction input
channel is a signed channel. In this case the direction channel values should be
either -1 or +1. Deselect this option if the direction channel is a position channel
and the signs must be determined from positional data values. In this case, if the
current position channel sample is greater than the previous sample, the output is
set to positive. If the current position channel sample is less than the previous
sample, the output is set to negative. If they are equal, the sign remains at its
current value.
4.4.5 Down sampler
The Down sampler channel reduces the number of samples taken from the input
channel by a user-defined factor, simulating a lower sample rate and decreasing the
amount of memory needed for data storage. See
information about simulating a higher sample rate.
Factor: Enter an integer greater than zero as the down sample factor. This has the
effect of decreasing the sample rate by this integer factor. The following example
has a integer factor of three.
4.4.6 Function generator
The Function generator computed channel generates an output channel that
simulates the output of an analog function generator.
Waveform: Set the shape of the output waveform to sine, triangle (ramp) or
square.
Duty cycle: For ramp and square type waveforms, specify the duty cycle in
percent (1 to 99). Note that for a ramp waveform, a duty cycle of 99 results in a
a4275-8.0 en HBM: public
Up sampler computed channel for
CX23-R and EX23-R