Xylem 6-Series Multiparameter - Manual (Page 181)

650 MDS Section 3
YSI Environmental Monitoring Systems Operations Manual 3-51
Use the arrow keys to scroll vertically to view more data points with regard to time or horizontally to view
more sensor data within a particular data entry. The vertical and horizontal scroll bars identify your location
within the data file.
3.6.5 FILE MEMORY
The File memory selection in the 650 File menu allows the user to get a complete picture of how the
memory of the instrument is presently allocated. To view details of the allocation, highlight File memory and
press Enter to display the following screen.
The key number in the File bytes used display is the Free memory listing which can be used to determine
when you need to format the 650 memory (“Delete all files” as described in the next section). The value
under Total memory will reflect whether you purchased a 650 with high or low memory. The top three items
in the display summarize the allocation of the used memory space. In the example above, 6400 bytes are used
in defining the memory directory, 512 bytes are taken up with accessible files, and 0 bytes are taken up in
“deleted” files. As described in Section 3.2.2 above, “deleted” files arise when the same file is uploaded from
a sonde several times with the file “overwritten”.
There is a lot of information on the File memory display, but the number of greatest importance is the Free
memory value.
3.6.6 DELETE ALL FILES
Use this selection to remove all files from the 650 memory. Remember that you cannot delete individual files
from flash memory. Highlight the selection and press Enter. Use the arrow keys to confirm that you really
want to delete all files and press Enter.
CAUTION: When you use this command, all data currently stored in the 650 memory will be irretrievably
lost, so make certain that you have transferred all files of interest to your PC before carrying out the
procedure. Note, however, that use of the Delete all files command will have no effect on any Site
Designations which have been entered from the Edit site list selection.