GRAPHTEC GL820 - Page 64

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CHAPTER 3 Settings and Measurement
(2)-6 Backup setting
The GL820 has a function that periodically backs up captured data (See the figure below).
This section explains how to set the data backup conditions.
Automatic backup
to USB memory
Internal memory
USB memory
Measurement input
GL820
Automatic backup to an FTP server
Ethernet
FTP server
Setting Description
Backup interval Sets the backup interval for captured data.
Off, 1, 2, 6, 12, 24 hours
Backup destination Sets the backup destination for captured data.
USB1 Backs up data to USB memory.
This setting is available only when data is being captured to
the internal memory.
FTP Backs up data to an FTP server on the network.
* The FTP server settings must be made using the FILE menu.
(Refer to page 3-37 for details.)
Save folder Sets the folder for saving a backup file.
* This must be a folder on USB memory or an FTP server.
Example: \GRAPHTEC\20091205
* If ring capture is On, the backup function is not available.
(2)-7 Statistical calculation setting
Two types of operation can be performed on all channels.
This section explains setting what to do in statistical calculation.
Setting Description
Off Calculation is not performed.
Average Displays the simple average value of the data during
data capture.
Max Displays the maximum value of the data during data
capture.
Min Displays the minimum value of the data during data
capture.
Peak Displays the peak value of the data during data cap-
ture.
RMS Displays the RMS value of the data during data cap-
ture.
The calculation formula is as follows:
R.M.S = ΣD
2
/n
D: data n: number of data
 • CalculationresultsaredisplayedintheDigital+StatisticalCalculationDisplayscreen.Usethe
keys to set All Mode. Refer to page 3-9 for details on All Mode.
• Atpower-on,calculationisstarted;TheresultisclearedwhenyoupresstheQUITkeyortheStartkey
to start measurement.