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Power Quality Analyzer Model 3945-B
59
Theenergyoveraselectedperiodcanbecalculatedfromtheaveragepowerrecords:
• Move the cursor to the start time.
• Press the
function button.
• Move the cursor with
buttons to the desired end time.
• The energy value is displayed, with end date and end time.
It is possible to make an energy measurement over several recording ranges in
the 4 quadrants.
NOTE: All of the data in a recording session can be downloaded to a com-
puter using the DataView
®
software.
The and buttons allow the integration period of the displayed measure-
ment and the graph time-scale to be changed.
Display Averaging Period Graph Scale
2 hours over 5 days
1 hour over 2 1/2 days
15 minutes over 15 hours
10 minutes over 10 hours
5 minutes over 5 hours
1 minute over 1 hour
20 seconds over 20 minutes
5 seconds over 5 minutes
1 second over 1 minute
NOTE: The minimum integration period is limited by the recording period. The
recording integration period of 2 minutes is a special case. In this case, only the fol-
lowingdisplayintegrationperiodsarepossible:10minutes,1hourand2hours.
5.7 Saving a Display
This button allows 12 snapshots to be saved for future recall and evaluation.
• Press the
button(forabout3s)tocapturethecurrentdisplay.
• The
icon is displayed in the top left corner as soon as the operation
is successful.
• This icon is replaced by
if there is no space left in the memory to
record the display.
NOTE: These screens can be downloaded to a computer using the Data-
View
®
software.