Product User Guide | 6
UltraShock
DEVICE OPERATION
Logging Mode - Peak vs. Instantaneous
When
Custom Start
is selected in the MadgeTech 4 Software, the user is presented with a range of logging time intervals or
actual recording rates (sampling rates). For all but the two highest recording rates, the user will also have a choice of Peak
vs. Instantaneous capture.
PEAK
INSTANTANEOUS
Regardless of the logging interval, the accelerometers will
internally sample at 512Hz. At the logging interval (for example,
30 seconds), the Peak value found in the previous logging
interval is stored.
The red markers show the peak value for the interval which will
be stored.
The accelerometers will only sample data at the logging rate. For
instance, if a 30 second logging rate was selected, then only a
single data point is captured at each 30 second instant.
The potential to lose valuable data can be seen. This, of course,
is very dependent on the applied shock duration and wave
shape. It’s possible for a significant shock event to occur and not
even be visible in the data for the Instantaneous mode.
1. Connect the logger to the interface cable.
2. Highlight the data logger in the Connected Devices list.
3. Click
Custom Start
.
4. Choose the
Start method
—Now or Delay (select date
and time).
5. Choose the
Stop method
—Manual or Automatic (select
date and time).
6. Select the
Reading interval
.
7. Select the
Shock recording mode
(if applicable)—
Instantaneous or Peak
NOTE:
When switching USB connections from a PC, laptop or power adapter, users can expect a 2 minute delay.
