Operation
XD 7500
110
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04/2018
The files stored in the photometer (
Internal DataB folder
) can later be trans-
ferred to a connected PC or to an external memory (
USB memory
).
4.11.2
Instructions on using USB memory devices
The safety of data stored on USB memory devices depends on the quality of
the memory device and the data transmission.
Data is stored partly or not at all if for example:
The power supply of the external memory device is interrupted during the
write process, or
The external memory device is prematurely disconnected from the pho-
tometer during the data backup.
To prevent a data loss we recommend the following:
Save all data internally in the photometer first.
After performing a backup leave the USB memory device connected to the
photometer for some time.
Check whether the stored data is complete, e.g. on a PC.
Use the USB memory device for data transport but not for permanent data
storage.
4.11.3
Measurement datasets
Elements of a mea-
surement dataset
A complete measurement dataset consists of:
Consecutive number (is automatically assigned by the photometer)
Date/time
Identification (e.g. ID or "AutoStore")
User name
Measured parameter, e.g. method number, dilution, wavelength (depend-
ing on the measuring mode)
Measured value with unit and, if necessary, citation form
Operations with
measurement data-
sets
Measurement datasets can be
stored (see Section 4.11.4)
displayed and printed (see Section 4.11.6)
filtered, i.e. selected or hidden based on certain criteria (see Section
4.11.7 and Section 4.11.8)
deleted (see Section 4.11.9).
When the memory
is full
You can erase measurement datasets (see Section 4.11.9), or overwrite the
oldest dataset with the next storing procedure. A security prompt appears
