Metrohm 746 VA Trace Analyzer - Manual (Page 466)

6.2 Preparations before start of a determination
746 VA Trace Analyzer / 747 VA Stand
6-3
• SEGMENTS
This dialog page is used to define the measured value recording using pro-
gram instructions and their parameters (see section 5.7.3). The most impor-
tant instructions concern selection of the electrode, the measurement mode
and the sweep:
– Electrode DME , SMDE , HMDE , RDE
– Measurement DCTMODE , DPMODE , SQWMODE , AC1MODE ,
mode
AC2MODE
,
PSAMODE
,
CYCMODE
– Sweep SWEEP , SSWEEP , FSWEEP , TSWEEP , PSWEEP ,
(CSWEEP...RAMP...CSWEEP)
A total of 8 different segments can be programmed to which the desired sub-
stances can be assigned. The segments are distinguished by their name.
• SUBSTANCES
On this dialog page maximum 8 different substances with their specific pa-
rameters can be defined. Each desired substance requires the following en-
tries:
– Substance name
– Assignment to a segment
(without assignment, there is no substance evaluation)
– Parameters for substance recognition (Recognition)
– Parameters for baseline calculation (Baseline)
– Definition of the evaluation quantity (Evaluation)
– Parameters for curve display and plot (Display/Plot)
– Parameters for calibration
(standard addition, calibration curve or internal standard)
• CALCULATION
On this dialog page freely selectable calculation formulae for further calcula-
tion of the standard results obtained in the evaluation to produce the desired
final results can be entered.
• DOCUMENTATION
This dialog page is used for definition of the automatic output of reports and
curves on the built-in printer or the printer connected at the parallel or RS232
interface. Further, there is a possibility to enter a detailed comment on the
method.