Metrohm 757 VA Computrace - Manual (Page 139)

6.3 Film deposition
757 VA Computrace – Software
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Purge time (s) [ 0...80600 s ; 300 s ]
Time of inert gas purging before the first measurement of
the sample solution.
Conditioning cycles
Before deposition, the solid state electrode can be electro-
chemically regenerated by a freely selectable number of
conditioning cycles. For every cycle, the voltage is changed
at a sweep rate of 1 V/s to the
End potential and then de-
creased at the same rate back to the Start potential .
Start potential (V) [ -5...+5 V ; -1.2 V ]
Start voltage for the cyclic conditioning sweep.
End potential (V) [ -5...+5 V ; -0.1 V ]
Final voltage for the cyclic conditioning sweep.
No. of cycles [ 0...X ; 0 ]
Number of conditioning cycles.
Deposition potential (V) [ -5...+5 V ; -0.9 V ]
Voltage applied to the electrodes during the Deposition time .
Deposition time (s) [ 0...80600 s ; 60 s ]
Time during which the Deposition potential is applied to the
electrodes.
Cleaning potential (V) [ -5...+5 V ; -0.1 V ]
Voltage applied to the electrodes during the Cleaning time .
Cleaning time (s) [ 0...80600 s ; 0 s ]
Time during which the Cleaning potential is applied to the
electrodes.
Sweep
Parameters of DP sweep used at the end of the film deposi-
tion for checking the electrode, see VA measurement
modse, section 3.2.
Cell off after measurement [ on, off ; on ]
Enable/disable the switching off of the voltage applied to the
electrodes after measurement.
Stand-by potential (V) [ -5...+5 V ; -0.1 V ]
Voltage to be applied to the electrodes after measurement if
the
Cell off after measurement box is set to off .