Measurement Computing eZ-Record rev.2.1 - Manual (Page 17)

17
January 2001 eZ-Record Manual
Recorder Setup Tab
Active Channels: This is the number of contiguous channels (starting with
channel 1) being used.
Recording Duration/Trigger: The amount of time (in seconds) or data blocks
(number) to be included in the recorded file.
Trigger Delay: This value is used with Pre Trigger and Post Trigger. With Pre
Trigger, Trigger Delay is the amount of time or the percentage of the data
block prior to the Trigger when data acquisition is captured. With Post
Trigger, Trigger Delay is the amount of time or the percentage of the data
block that is skipped from the time of the trigger to the start of data
acquisition. With Post Trigger
Comments: Your comments about this file. For example, they may include the
environmental condition at the time of the recording, the phase of a project,
or a problem that you are investigating.
Block Rejection Tab
This panel is only active when Measure on the Task menu is selected.
Because each strike of an impact hammer may not have the desired results, Block
Rejection allows you to reject a block of data that is the result of a double strike,
an over or under load, or simply because it “doesn’t look right.” Auto block
rejection looks at the acceptable parameters for a block and automatically rejects
blocks that do not meet those parameters. Manual rejection allows you to look at
each block of data and allows you to determine if it should be rejected.