6 Appendix
774 Oven Sample Processor, Instructions for use
150
Certain device parameters can be set only via RS232, i.e. using a PC. If
such device parameters are set and if no PC is available to cancel the
settings, the unit cannot be fully set to the previous state.
In rare cases, high-magnitude unwanted signals such as mains spikes
and lightning strike etc. may impair the contents of the data memory. If
the data memory has undefined contents, this may lead to a system
crash.
The 774 Oven Sample Processor offers various options for initialising the
data memory. Either the entire memory (
all) or only parts of it (param,
config, setup, assembly
) may be assigned default values.
Even though the device number is retained in this case, you should ini-
tialise only when necessary since the stored user data (etc.) will be de-
leted in this case.
• Prepare the unit for diagnosis (see Chap. 5.4.2).
• If necessary, press key <9> several times until
diagnosis
>RAM initialization
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