Metrohm 838 Advanced Sample Processor Manual page 45

2.4 Commands
p. 20). The rest position is the zero position (0 mm) of the particular lift,
i.e. its upper stop.
The lift speed can be set in the parameter menu under
>sample
or altered in a sequence with the appropriate DEF
changer settings
command.
Each lift can be positioned with an accuracy of one millimeter. The
LEARN function is available for this (see p. 70).
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Metrohm 838 Advanced Sample Processor, Operation