Metrohm 751 GPD Titrino - Manual (Page 207)

4.3. Initialise and test RAM
751 GPD Titrino
204
4.3 Initialise and test RAM
On the odd occasion large disturbing signals (e.g. mains spikes, lightning, etc.) can have an
adverse effect on the processor functions and hence lead to a system crash. After such a
crash the RAM area must be initialised. Although the basic instrument data remain stored,
the RAM initialisation should be performed only when necessary since the stored user data
(configuration, parameters, calculation variables, etc.) are cleared as a result.
Power OFF
Power ON and simultaneously press keys <DOS> and <STOP/FILL>.
RAM Init.
Press <START>.
confirm RAM Init.
Press <START>.
RAM Init. activ
RAM is tested and initialised. Subsequently a warm start is executed.
The lost data of the user memory must now be reentered.
If 'system error 3' appears in the display, <Clear>can be used to return to the instrument
program. The initialisation values are loaded automatically. The instrument thus remains
capable of measurement. However, possibly a small loss in accuracy must be anticipated.
A new optimum adjustment can be performed by Metrohm service. The error message 'sy-
stem error 3' always appears after the instrument is switched on until this adjustment has
been performed.