Burst Message Logger - HBM SomatXR CX23-R User Manual

4 Setting up and running a test
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Trigger time
Pre (secs): Specify the time period in seconds of data storage before the trigger.
Post (secs): Specify the time period in seconds of data storage after the trigger.
Storage mode: Select the preferred storage mode.
Standard mode: This mode is provided for compatibility with the traditional
o
SoMat DataMode implementations. In this mode, all burst records are the same
size. However, no checks are made for triggers while a burst record is being
stored. This can result in little or no post trigger data storage after significant
events.
Enhanced mode: This mode checks for triggers all of the time. This mode
o
ensures that data is stored for the full post trigger period irrespective of when
the trigger occurs. In short, it fixes a potential significant shortcoming of the
Standard mode and for this reason it is the default and recommended mode.
This can result in burst records being different sizes, which is not a significant
issue.
Number of bursts: Select the Unlimited option to store all triggered burst event
records. Optionally, specify a limit on the number of burst records to be stored.
Note that when the Enhanced storage mode is used, burst storage is terminated
after the total burst data samples stored exceeds the size of the specified number
of burst records times the Standard burst record size.
NOTE
The total number of samples stored in a Standard burst record is the sum of the
post-trigger and pre-trigger samples plus one, since the trigger sample is always
stored.
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.
4.6.3 Burst message logger
The Burst message logger DataMode™ is used to store message data for transient
events in an efficient manner. It can capture message data before and after user-
defined triggering events occur. It is particularly useful in minimizing data storage
consumption when video channels are used.
Trigger mode: Select one of the following triggering options.
When true: A burst record will be stored whenever the trigger channel is
o
TRUE.
On false – true edge: A burst record will be stored when the trigger channel
o
transitions from FALSE to TRUE.
Trigger channel: Select the desired logical input channel for burst triggering.
Trigger time
Pre (secs): Specify the time period in seconds of data storage before the trigger.
Post (secs): Specify the time period in seconds of data storage after the trigger.
a4275-8.0 en HBM: public CX23-R and EX23-R