Metrohm 781 pH/Ion Meter - Manual (Page 121)

7 Various functions
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7.5 Setup
Certain settings of the pH/Ion Meter can be found in the Setup menu.
This menu cannot be accessed from the normal instrument display, as
alterations to these settings have a great influence on the functions of
the pH/Ion Meter.
The Setup menu is called up immediately after the instrument has been
switched on by pressing down and holding down the <CONFIG> key.
setup
├
lock
├
input assign
├
graphics
└
instr.number
Be very careful when making alterations in this menu! Alterations have
a very large influence on the functions of the instrument. Accidental
alterations can be rejected by carrying out a deliberate memory initial-
ization (see Section 8.5).
7.5.1 Locking
setup
├
lock
: ├
all keys
├
<CONFIG>
├
<PARAM>
├
<CAL>
├
recall method
├
store method
├
delete method
├
<CAL.DATA>
├
<MODE>
└
<EL.TEST>
You can disable certain keys and functions, e.g. to prevent unwanted
alterations to the instrument settings or method parameters.
You can activate such a disablement by setting the corresponding pa-
rameter to ' ON '. This does not affect access to the Setup menu in any
way.
Please note that configuration settings (i.e.
CONFIG/report/id1 and
id2) and parameters (i.e. manual calibration concentrations or stand-
ard additions), which are edited during a measurement or calibration
procedure, are modified that way even if <CONFIG> or <PARAM>
are locked. The advantage is that the requested settings and parame-
ters only have to be confirmed during repeated procedures.
Please note that all disablements will be invalidated if a RAM-Init is car-
ried out (see Section 8.5).