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Somat eDAQ
lite
7 Computed Channels
This chapter details the available computed channels and their associated
parameters. A computed channel is a data channel derived from one or more
transducer channels or from previously defined computed channels. For example, a
computed channel can generate a channel having a higher or lower sample rate (using
Up Sampler or Down Sampler), be constructed from data using a mathematical
formula or expression (using the Desk Calculator) or integrate data samples (using the
Integrator). Define computed channels in the computed channel setup window.
NOTE
Defining computed channels in a test setup is optional.
7.1 Common Computed Channel Parameters
The following parameters are common to all computed channels.
Network Node
This field displays the IP address or host name of the eDAQ lite for which the channel
has been defined.
ID
Enter a unique identifier for the channel. The name must conform to ID naming
conventions. Valid ID names:
•
are case sensitive
•
are limited to a maximum of 12 characters
•
contain only valid characters (i.e., letters (a-z, A-Z), digits (0-9), and the
underscore (_) character)
•
start with a letter
•
are not duplicates of system reserved names (sin, cos, log, etc.)
Description
Enter a more detailed description of the computed channel. TCE sets the description
field to match the input channel description, but modifications are permitted.
Type
Define the type of measurement associated with the transducer or computed channel.
Typical types include strain, load and acceleration. Select a type from the list or directly
key in a user-defined type. Since TCE uses the type definition in subsequent sections
of the test setup process, completing the field is recommended.
Units
Define the units of measurement for the computed channel. Since TCE uses the units
definition in subsequent sections of the test setup process, completing the field is
recommended.
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