Metrohm 788 IC Filtration Sample Processor - Manual (Page 81)

4.2 Basic settings
788 IC Filtration Sample Processor
73
4.2.2 Locking keyboard functions
Switch on +
CONFIG
Certain domains of the user dialog can be made inac-
cessible to the novice user by locking particular keys.
For example, the inadvertent overwriting of a method or
even the changing of parameters can be prevented in
this way.
The menu
'>keyboard options' for the corresponding
functions is opened by holding down the
key while switching on the 788 IC Filtration Sample
Processor. Alternatively, a reset can be executed by
pressing and then the key
within 0.4 seconds. This menu is also accessible when
the entire keyboard has been locked
The individual key domains that can be locked are the
following:
>keyboard options
lock keyboard: OFF
ON,OFF
Locking the entire keyboard
If, during routine use, only one particular method is to
be used, it may be desirable to block manual manipula-
tions on the 788 IC Filtration Sample Processor. Almost
all the keys on the keyboard can be locked for this pur-
pose. The , and
keys however, remain operable so that it is still possible
to start and stop a method. This can also be beneficial
when using the 788 IC Filtration Sample Processor with
a PC software (e.g. «IC Net»). For this application the
keyboard may be disconnected.
>keyboard options
lock configuration: OFF
ON,OFF
Locking key
The basic configuration of the changer can be pro-
tected from overwriting. All settings of the configuration
menu are no longer accessible at this point.
>keyboard options
lock parameters: OFF
ON,OFF
Locking key
If user methods are generally used, it might be wise to
protect the stored method parameters from alteration.
The parameter menu can then be made inaccessible.