Metrohm 746 VA Trace Analyzer - Manual (Page 241)

5.5 Operation
746 VA Trace Analyzer / 747 VA Stand
5-90
Parameter Range; Default value / Meaning
With non-gaussian shaped peaks, the approximated peak
height can differ greatly from the actual peak height I.peak
or t.peak . To ensure that the results are still displayed or
suppressed as desired, I.threshold or t.threshold
must be adjusted if need be.
bad U.peak interp. No result, as the interpolation of the peak
voltage
U.peak is not possible (see section
6.6). It is advisable to start a new measure-
ment.
basel.type error In a double peak evaluation, both peaks
must have the same baseline type (
linear ,
polynom , expon. ; see section 6.7.3).
crit.basept.interp. Critical base point interpolation (see section
6.6), the base point was simulated. If de-
sired, the base point can be subsequently
changed manually (see section 5.5.3).
crit. front ovlp. Critical overlapping at the peak front half, the
overlapping is 10...40%, A switch to
r.half
or r.double is advisable (see section 6.7.1).
crit. rear ovlp. Critical overlapping at the peak rear half, the
overlapping is 10...40%, A switch to
f.half
or f.double is advisable (see section 6.7.1).
eval. impossible An evaluation is not possible (e.g. for
CYCMODE ).
front overlapping Admissible overlapping at the peak front half
(<10%, see section 6.7.1).
illegal basel.type The evaluation with exponential baseline
expon. is not possible. The baseline must
be set to linear or polynom (see section
6.7.3).
illeg. basel.scope The evaluation with f.half or r.half is not
possible with the selected baseline type (see
section 6.7.1).
illeg. front ovlp. Inadmissible overlapping at the peak front
half (>40%, see section 6.7.1).
illeg. rear ovlp. Inadmissible overlapping at the peak rear
half (>40%, see section 6.7.1).
illegal U.width The determined peak width U.width is out-
side the admissible range U.width
min...U.width max defined on the
"SUBSTANCES" page (see section 6.6).
missing front peak Missing front peak for rear peak evaluation of
a double peak (see section 6.7.3).
missing rear peak Missing rear peak for front peak evaluation of
a double peak (see section 6.7.3).
rear overlapping Admissible overlapping at the peak rear
edge (<10%, see section 6.7.1).