XT2640 Operating Manual
13 July 2016
Page 122 of 187
+24.4139E-6,+570.967E-3,+4.02716E-3,+8.0,+3.69523E-3,+2.50181E-3,-3.62742E-6,,
+29.2967E-6,+691.224E-3,+4.89038E-3,+8.0,+4.51385E-3,+7.29706E-3,+531.195E-9,,
+34.1795E-6,+819.305E-3,+5.75712E-3,+7.0,+5.39458E-3,-7.69836E-3,-2.13687E-6,,
+39.0623E-6,+935.345E-3,+6.58707E-3,+7.0,+6.18618E-3,-9.43694E-3,-7.59902E-6,,
+43.9451E-6,+1.0,+7.39428E-3,+7.0,+7.01683E-3,+1.06170E-3,+3.92235E-6,,
+48.8278E-6,+1.0,+8.26958E-3,+7.0,+7.86220E-3,+8.23923E-3,+5.63256E-6,,
+53.7106E-6,+1.0,+9.11749E-3,+7.0,+8.71496E-3,-10.0168E-3,-8.82787E-6,,
+58.5934E-6,+1.0,+9.94132E-3,+7.0,+9.49106E-3,-9.59577E-3,-10.1849E-6,,
23.5.3.6
HISTORICAL
MEASUREMENT
FILE
The contents of this file are configured by the trace selections on the HISTORY screen. The file covers the period of time in 8192
equally spaced time increments between when the history log was started up to either when the file is generated or when it was
previously stopped.
This contains the maximum, average and minimum measured data during each preceding time increment. Unlike data logging, this is
guaranteed to include all data measured during that time increment so it actually has better event capture capability and extent
recording capability than a data log file and is considerably smaller and easier to generate, particularly if measurement extents or
trend analysis is the intention.
These files are variable in length, can be up to 1.3M bytes long and always contains 8193 records.
Note:
If further traces covering the same period of time are wished to be exported in another file then stop the historical record
first, then repeatedly configure the desired traces and export the file for those traces, until all required traces have been
exported.
Below is an example of the first few lines of this file. The time column is the time in seconds units. This file can contain invalid data
points at certain times because data at that specific time was not captured, you should interpolate between the surrounding valid
points as needed.
TIME,Max CH2:Hz,Avg CH2:Hz,Min CH2:Hz,Max CH2:V:CPL,Avg CH2:V:CPL,Min CH2:V:CPL,…
+783.813E-3,+50.0000E+0,+50.0000E+0,+50.0000E+0,+247.097E+0,+247.097E+0,…
+1.0,+50.0000E+0,+50.0000E+0,+50.0000E+0,+247.121E+0,+247.109E+0,…
+2.0,+50.0000E+0,+50.0000E+0,+50.0000E+0,+247.121E+0,+247.121E+0,…
23.6
IMPORTING
FILES
FROM
A
DRIVE
The XT2640 can import configuration or update files from a drive. This is achieved by pressing the USB Drive Info area while a drive
is correctly attached.
This initiates a screen in which you should press the IMPORT FILE button to initiate the import file screen, and example of which is
shown below.
The right side area of the screen shows a listing of the files which may be imported for the file type selected by the buttons on the left
side (the IMPORT area). Which file type is being shown is indicated by the respective button in the IMPORT area being highlighted
colored green. To change the type of file listed press the desired IMPORT area file type button.
The files (if any) are listed as buttons in the right side area, with each button showing the filename and file date, if a large number of
files are available then there are scroll buttons shown to allow you to scroll through the list. To import a file press the button for that
specific file in the file listing area. The right side area of the screen then changes to indicate the progress of the import. After
completion you may press any of the IMPORT area buttons to repeat this, or may press the EXPORT DATA button to export a file, or
press the RETURN button to return to the screen which was being viewed when the USB Drive Info area was initially pressed.
23.6.1
IMPORTING
BINARY
CONFIGURATION,
CUSTOM
SCREEN
AND
HARMONIC
LIMITS
FILES
These are binary files which have been previously exported by a XT2640. The XT2640 automatically recognizes these files by their
contents and no specific filenames or extensions are assumed by the XT2640.