Digital Acoustics ESBx-110 Especificaciones Pagina 267

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Signal Analyzer
ADDvantage-32 PLUS AC to DC Power Converter
5-5
5.4 PREVIEW
Information recorded by the signal analyzer channels is broken into 8,000 individual
points. When a particular channel is triggered, a preview can be set to show a number of
samples before the trigger occurred. This allows information leading up to the trigger
point to be evaluated. For example, if the preview is set at 500, then 500 samples will be
recorded before the trigger point and 7,500 after.
Note that the preview specifies the MAXIMUM number of samples that may be collected
prior to the trigger event. In the event that a trigger event is detected before the number
of samples specified by the preview have been collected, the preview will be less than
what has been specified by the preview calibration factor. For example, if the preview
calibration factor is specified as 4,000 samples, but the trigger occurs after only 100
samples have been collected, the number of data samples recorded before the trigger will
be the 100 samples. The number of data samples recorded after the trigger will be the
8,000 maximum less the preview calibration factor, or 4,000 samples for this case. The
total number of data points collected by the analyzer in this case will be 4,100100
before the trigger event and 4,000 after.
RECORDER CONFIGURATION DEFAULT RANGE
CHANNEL PARAMETER VALUE
______________________________________________________________________
#1 Z***:PREVIEW 1 500 1-7999
#2 Z***:PREVIEW 2 500 1-7999
#3 Z***:PREVIEW 3 500 1-7999
#4 Z***:PREVIEW 4 500 1-7999
#5 Z***:PREVIEW 5 500 1-7999
#6 Z***:PREVIEW 6 500 1-7999
#7 Z***:PREVIEW 7 500 1-7999
#8 Z***:PREVIEW 8 500 1-7999
5.5 ENABLE
This bit enables or disables the recorder. The operator must disable the recorder for
adjustments such as trigger level or sample rate. Defaults are as follows:
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