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Metrohm 746 VA Trace Analyzer User Manual

Page 312

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5.6.4 CALCULATION

746 VA Trace Analyzer / 747 VA Stand

5-161

Parameter

Range; Default value / Meaning

Method

display only

Method name

Name of the method loaded in the working memory.

Quantity

12 characters;

Result quantity

Designation of the result quantity (text-only entry).

On the transfer of standard formulae with the softkey

method>

, the substance name is entered in this field.

If this field is left blank in a calculation formula, the result designation
(e.g.

R1

,

A23

) appears in the final formula.

Formula

Formula expressions;

Calculation formulae

Display and entry of calculation formulae comprising value assign-
ments with the aid of instrument variables, freely definable variables,
constants and operators.

Value assignments
Value assignments are processed in the order of their entry. The
following four types of assignments are possible:

R..........=

Value assignment for final result that is dis-
played and printed. The variable name must
start with an uppercase

R

and can then contain

max. 10 arbitrary characters (numbers or let-
ters).

A##=

Value assignment for alternative result, which is
then displayed and printed only if it is set active
in CASE instructions. The variable name must
start with an uppercase

A

and can then contain

one of the numbers 01...15. Alternative result
formulae set active are marked by an asterisk

*

.

........=

Value assignment to any variable for intermedi-
ate result (not displayed). The variable name
must start with a lowercase letter and can then
contain max. 7 arbitrary characters (numbers or
letters).

C##=

Value assignment to common variable. The
variable name must start with an uppercase

C

and can then contain one of the numbers
01...18.

Freely definable variables
The following variables must first be defined in value assignments and
can then be used as often as liked in other formulae:

R..........

Result

A##

Alternative result

........

Intermediate result