WSDA
®
-Base-104
®
USB Base Station
User Manual
System Operational Overview
18
3.6
Sampling Settings
Sampling settings are accessed through the Configure Node menu. There is a tab for each
sampling mode available for the particular node (
Figure 9 - Sample Settings Menu
).Depending
on the type of node, up to four sampling modes are available: Synchronized Sampling, Low
Duty Cycle, Streaming, and Datalogging. Some modes have user-configurable settings for
sample rate, sample duration, and datalogging. Other settings are automatic, depending on
number of active channels and other variables. For more information on sampling modes, refer
to the Node Commander user manual (
see References on page 57
).
Figure 9 - Sample Settings Menu
In general, when determining what sample mode and rate is most suitable for the application,
refer to the following guidelines;
l
Use a sample rate at least twice the value of the target measurement frequency. This is the
minimum sample rate required to produce an accurate digital representation of the
measured signal. The higher the sample rate, the more accurate the digital representation.
l
Using the minimum required sample rate will increase battery life and minimize the
allocated network bandwidth.
l
Using periodic burst sampling in place of continuous sampling will increase battery life, and
the longer the sample interval, the more power and network bandwidth will be saved.
For synchronized sampling, use the online calculator to evaluate network bandwidth at different
sampling settings :
http://www.microstrain.com/configure-your-system
