YOKOGAWA WT500 User Manual page 239

9.5 Choosing Where to Store Numeric Data
9-12
Note
• When you save numeric data, places without numeric values either contain blank spaces
or one of these strings: NAN, +INF, -INF, or ERROR. (The places that contain blank spaces
are in functions such as the ones for the 0th and 1st harmonic orders of fU and fI, where the
screen display is also blank.)
• Up to 1000 files and directories can be displayed in the file list. If there are more than a total
of 1000 files and directories in a given directory, the file list for that directory will only display
1000 files and directories. There is no way to set which files and directories are displayed.
• Files without archive attributes are not displayed in the File List window. Do not clear the
archive attributes of files on your PC that were saved using the WT500.
• File paths can be displayed using up to 41 characters. If a path exceeds 41 characters, an
ellipsis appears at the end of the character string.
• File names are not case-sensitive. Comments are case-sensitive. The following file names
cannot be used due to MS-DOS limitations:
AUX, CON, PRN, NUL, CLOCK, COM1 to COM9, and LPT1 to LPT9
• A directory can contain up to 1000 files. To save more than 1000 files, either start saving to
a different directory, or move already saved files to a different directory.
• If there are a large number of files on a single directory, the amount of time that it takes to
write to and read files becomes longer. If this happens, start saving files to a directory with
less files, or move the files in the save destination to a different directory.
• Larger numeric data files take longer to store. The storage of a new file does not start until
the storage of the preceding file finishes. When files are large and take a long time to store,
data loss may occur. If this occurs, the storage condition indicator displays an asterisk (see
"Explanation" in section 9.6 for details).
• If you choose to store data through USB and the write speed of the connected USB device
is slow, a new numeric data storage operation may begin before the previous operation is
finished, and some of the numeric data may be lost. If this occurs, the storage condition
indicator displays an asterisk (see "Explanation" in section 9.6 for details). You can prevent
the loss of numeric data during storage by:
• Lowering the numeric data update rate.
• Reducing the number of stored data types.
• Using faster USB memory.
• Please be aware that the number of times that you can write to USB memory is limited.
IM 760201-01E