HyQuest Solutions Pty Ltd
Point Velocity Display - Model PVD100
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Copyright
24
Issue 1.00 4 Apr, 2007
Data Format Notes
The data format presented by the
PVD100
during a measurement provides for displaying a
computed velocity by an external device at a 1-second rate. The accumulating contact
closure counts and time interval counts can be used in a rating equation to display velocity.
At the end of the measuring interval, a final total of contact closures and interval time is then
used to compute the measured velocity. For the Normal mode, the 1-second output data
format displays the accumulating time interval counts based on a 300 Hz sample rate. The
following example below shows how it would be presented using the
‘HyperTerminal’
program: NORMAL mode, 300 Hz sample rate, counts accumulating at a 1 Hz rate.
For Slow Speed mode operation, the display of the accumulating time interval counts differs
in that the value is based on a 30 Hz sample rate. The following example below shows how it
would be presented in the Slow Speed mode:
30 Hz sample rate, counts accumulating at a 0.25 Hz rate (1 count every 4 seconds)
