Metrohm Vision Manual - Manual (Page 26)

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Vision will subtract the whole External Reference spectrum (empty channel minus reference) from
each acquired spectrum (filled channel minus reference). The reference channel is almost identical, so
the reference spectra will cancel out. The final result is that each acquired spectrum is corrected for
the empty channel.
This feature has been developed mainly for the process instruments, but it is also possible to use it on
laboratory systems. Consult a Metrohm representative before using External Reference on an XDS
system.
Please note that the External Reference feature is different from Stored Reference, where the data
acquisition proceeds in a normal way using a reference spectrum saved previously in the Project.
3.3.5 Using the Autosave Function
The Autosave function allows saving of an acquired spectrum in a specified product with a
predefined name. To configure the Autosave:
• Click on Acquire/Autosave.