Directional velocity

The Directional velocity computed channel generates a signed velocity output from two input channels. One input channel is the unsigned velocity and the second input channel is a position channel to set the sign of the output value.

NOTE
Measurand and Units are inherited from the selected velocity input channel. Description and Range values are initialized on selection of the velocity input channel.

ClosedGeneric parameters

  • Name: Enter a name for the channel. The name must be unique and contain valid characters (invalid characters are single and double quotes, '\', '@', '#', '&', '<' and '>'). Invalid channel names are 'true' and 'false' (case sensitive).
  • Collect: Select the Collect checkbox to write the channel data to the SIE data file during a test run.
  • Description: Enter an optional detailed description of the computed channel.
  • Range min and Range max: Enter the expected extreme values of the computed channel output.
  • Velocity channel: Set the velocity input channel. In the edit dialog, the channel sample rate is displayed in Hz.
  • 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.

Web Interface

Computed channels