Metrohm 746 VA Trace Analyzer User Manual
Page 266
5.5.3 CURVES
746 VA Trace Analyzer / 747 VA Stand
5-115
Manual modification of spike measured values
Notes on spike elimination (see also section 6.4)
When the measured values are recorded, spikes are recognized automatically and
marked in the
original
curve by an asterisk (k) or a circle (¡ = overflow). The subse-
quent measured value processing eliminates these points if possible automatically and
provides the
processed
curve. The measured values of this curve – and hence any spikes
still present – can be changed manually with the aid of the spike elimination. Here, the
following must be noted:
•
On closure with
culation with both modified and unmodified measured values (spikes can thus
also disappear without manual change of the measured values). In order to ac-
cess the original experimental data again, the softkey
on
the "MONITORING" page must be pressed.
•
On storage of a determination in the determination memory or on the data card,
the
original
experimental data are retained, but not the
processed
measured
values changed with the spike elimination.
Proceed as follows in manual modification of the measured values:
Select measured value
The desired measured value is selected using the cursor keys <ç>
or <è>. The current measured value is marked by a cross, further
the numeric data voltage
U
and current
I
are shown below the curve.
The following applies to selection with the cursor keys:
Each time these keys are pressed, the cursor moves by 1 meas-
ured point in the selected direction. A greater shift by 4 meas-
ured points can be achieved by pressing the
the same time. In both cases the cursor keys are repetitive, i.e.
the longer the cursor key is pressed, the greater the cursor shift.
Shift measured values
Once the desired measured value has been selected, it can be
changed using the cursor keys <é> or <ê>. The current measured
value is marked by a cross, further the numeric data voltage
U
and
current
I
are shown below the curve.
The following applies to selection with the cursor keys:
Each time these keys are pressed, the cursor moves by 1 pixel in
the selected direction. A greater shift by 4 pixels can be
achieved by pressing the
both cases the cursor keys are repetitive, i.e. the longer the cur-
sor key is pressed, the greater the shift in the measurement
point.
ENTER
Adopt measured value
When the measured value is in the desired position, it is adopted
definitively by pressing the