Metrohm 838 Advanced Sample Processor Manual - Manual (Page 13)

2.1 Operating principles
Metrohm 838 Advanced Sample Processor, Operation 5
tering parameters. For entering parameters the numerical block on the
right-hand side of the keypad is also available.
The lowest row of keys (<HOLD>, <STOP>, <START>) are used
for the direct control of a method sequence.
If the Sample Processor is integrated in a PC-controlled automation
system and is entirely controlled via the RS232 interface, it is possible
to operate the instrument without the keypad.
2.1.3 The keys
The menu keys
CONFIG
The <CONFIG> key opens the selection menu for the configuration
of the Sample Processor.
PARAM
The <PARAM> key opens the selection menu for editing the run se-
quences and method parameters.
USER
METHOD
The <User Method> key opens the selection menu for opening, sav-
ing and deleting default or user-defined methods.
Lift operation and sample positioning keys
With the < > and < > keys the lift can be moved up and down
respectively. The lowest possible lift position is defined by the configu-
ration parameter ' max. stroke path '.
In the editing mode the arrow keys < > and < > are used
for navigation in the particular menu or submenu.
HOME END
With the <HOME> key the lift is returned to the rest position (0 mm),
i.e. to the uppermost stop.
<END> moves the lift to the predefined working position (see p. 20).
In the editing mode the <HOME> and <END> keys move to
the first and last line of the menu or submenu respectively.
NEXT PREV
With the < NEXT> and < PREV> keys the sample rack can be
rotated forward or backward by one position. If necessary, the lift is
automatically raised to the shifting position. When the rack position
has been reached the robotic arm will automatically be aligned to the
corresponding rack position.
During data input the <SELECT> key is used to select a pre-
defined entry from a selection list.