Peak Valley - HBM SomatXR CX23-R User Manual

4 Setting up and running a test
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Trigger mode: Select one of three available triggering options. Use triggering to
eliminate undesired segments of the message stream before it is processed by
the DataMode.
Always on: Do not use triggering. Data storage is always on from the start of
o
the test.
Trigger: Data storage starts when the trigger channel becomes TRUE and
o
continues until the test run stops.
Gate: Data storage occurs when and only when the trigger channel is TRUE.
o
Trigger channel: Select the logical input channel for triggering - when using a
trigger option other than Always on.
Channel select: From the channels list, select the desired input channels for the
DataMode and click the appropriate arrow. Alternatively, drag and drop the desired
channels to the appropriate list. All channels selected must have the same
sample rate.
4.6.6 Peak valley
The Peak valley DataMode™ stores multiple channels of peak and valley
sequences in the output data file. The system acquires peaks and valleys from
triggered or un-triggered time history data streams using the user-defined hysteresis
value and the peak valley processing algorithm.
Trigger mode: Select one of four available triggering options. Use triggering to
eliminate undesired segments of the input data stream before it is processed by
the DataMode.
Always on: Do not use triggering. Data storage is always on from the start of
o
the test.
Trigger: Data storage starts when the trigger channel becomes TRUE and
o
continues until the test run stops.
Gate: Data storage occurs when and only when the trigger channel is TRUE.
o
One shot: Store a single data sample when the trigger channel transitions from
o
FALSE to TRUE or if the trigger channel is TRUE on the first sample of any
run.
Trigger channel: Select the logical input channel for triggering - when using a
trigger option other than Always on. The trigger channel must have the same
sample rate as the selected input channels.
DataMode options
Hysteresis level: Specify the desired hysteresis level for the peak valley
processing algorithm. See
explanation of the effect of the user-defined hysteresis level. There are two modes
for defining this:
A floating point value: The value must be greater than or equal to 0.0. This
o
value is used as the hysteresis gate for all channels.
A floating point value followed by the '%' character: The value must be in
o
the range of 0.0 to 100.0. For each channel the hysteresis gate is computed
using the equation: (pv_hysteresis * (range_max – range_min) / 100.0).
a4275-8.0 en HBM: public
Peak valley processing algorithm (Page 71) for an
CX23-R and EX23-R