Xylem 6-Series Multiparameter - Manual (Page 176)

650 MDS Section 3
YSI Environmental Monitoring Systems Operations Manual 3-46
3.5.4.2 SUMMARY OF 650 LOGGING LIMITATIONS
WITH A 650/YSI SONDE SYSTEM, THE USER CANNOT:
 Log GPS and/or barometer data to sonde memory.
 Log GPS and/or barometer to 650 memory without a sonde attached and the 650 in Run mode. See
Sections 3.8.2 and 3.9.4 below.
 Log data to existing files in 650 memory if the data format does not EXACTLY match that of the data
already in the file. Typical examples of this type of “file mismatch” include:
 Attempting to append existing data files after changing the parameter list.
 Attempting to append existing data containing a Site Number to a file that contains data
without Site numbers.
 Attempting to append existing data containing NO site number to a file that contains data with
Site numbers.
 Attempting to append existing files containing GPS and/or barometer data after deactivating
the storage of these parameters in Logging setup.
 Delete individual files from 650 or sonde memory. The memory is “flash” and therefore all files must
be deleted in order to regenerate the storage capacity.
 Enter more than 8 characters for a File name or more than 13 characters for a Site name.
3.6 MANAGING 650 FILES
3.6.1 INTRODUCTION
This section deals with the management of data that have been placed in 650 memory either through direct
logging from your sonde or from the upload of data stored in sonde memory. A “file” by definition contains
data and is distinct from the Site Designations in a Site list that are used to configure actual data files. For
example, deleting an entry from the site list after points have been logged under this designation will have no
effect on the actual logged data, i.e., the file itself will still be present in 650 memory. Conversely, deleting
data files from the 650 memory will not delete the Site Designations from the Site list. The management of
data stored in the 650 is controlled from the 650 File command; the management of the list of file/site
designations is controlled from the Edit site list command in the 650 Logging setup menu as described in
Section 3.5.3.4 above. Understanding this distinction will help the user avoid confusion in file and site list
management.
It is also important to remember that, as described in Section 3.2.2 above, the memory of the 650 is “flash”
and that, while this type of memory has many advantages, its use does impose two limitations on file
management.
1. The files are listed in the order that they are logged to memory and this order cannot be changed.
2. It is not possible to delete individual files to free up memory. The only way to regenerate the 650
memory is to delete ALL files present, i.e., format the flash.