EZT-570S User Manual
86
7.2.1
Calculating Log File Size
The EZT-570S saves the log file in a text based format (.csv), so the amount of memory consumed
for each reading is dependent upon the number of digits required to accurately display the value.
This optimizes memory usage but also makes calculating an exact file size difficult. To obtain a worst
case approximation of the resultant file size, use the following formula:
File Size (KB) = 1 + [0.023 + (0.006 * number points selected for logging)] * number of readings
7.3 Reviewing
Historical
Data
Historical files can be opened and viewed using the historical viewer. In order to view a historical
data file, it must first be opened by selecting “Open” from the File menu. Once the file has been
opened, the EZT-570S will automatically plot up to the first eight channels of the historical data file or
the user can choose to cancel the plot select which channels should be plotted as well as adjust the
specific time period to plot.
7.3.1
History Plot Setup
The history plot setup allows the user to select any time frame (zoom in/out) from the historical data
file as well as select up to six channels of data to plot. To edit the settings for the historical plot,
select “Plot Setup” from the History menu.
Figure 7-3 Plot Channels
Any point from the data file can be selected along with the vertical axis to be used for each channel to
be plotted. Select channels from the list by turning them on or off, and use the “Left” and “Right” axis
buttons to assign the selected item to the left or right axis for the plot range. To adjust the period of
time to plot from the data file, press the “Time” button.
Summary of Contents for EZT-570S
Page 150: ......
