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Metrohm 746 VA Trace Analyzer User Manual

Page 223

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5.5 Operation

746 VA Trace Analyzer / 747 VA Stand

5-72

Measurement window

During an ongoing measurement, the measurement window is shown with the following
current data:

Status

Meaning

* READY *

Ready

The instrument is in the standby mode, all dialog pages can be
selected. A new measurement or measurement series (with

Auto.batch = on

) must be started with the key.

* BUSY *

Program running

The program loaded in the working memory that has been started with
the key or automatically (with

Auto.batch = on

) is running.

In this instrument mode, the following limitations apply to the screen
dialog:

The two dialog pages "STAND" and "CURVES" can not be se-
lected.

The entry of sample data in the 1

st

input line of the

"MONITORING" page is not possible (see section 5.5.1). With
programs for the 695 Autosampler with preparation cycles, this
also applies to the 2

nd

input line.

Changes to the program loaded in the working memory
("OP.SEQUENCE" or "SEGMENTS") or to any parameters on the
other dialog pages are immediately effective for the current de-
termination. However, care should be exercised when making
such changes as uncontrolled program status conditions could
easily be produced.

During the measurement, either the measurement window (see
above) or, after switching with the softkey

, the current

experimental curve is shown.

In the instrument status

* BUSY *

, the following main function keys

are active (for details, see section 5.1.4):

Active program aborted immediately

Sample series stopped on completion of the

ongoing determination

Abbreviation of the current instruction

Exception: SWEEP instructions can not be
abbreviated with the key. How-
ever, it is possible to change the SWEEP
parameter

U.end

at any time.

The program is interrupted

Segment: XXXXXXXX XX XXXXXXXXXXXXX XXXX s

VR: XX

U = XXXXX V

I = XXXXXXXXX A

Program line with line
number, program
instruction and line time

Measured values,
voltage (U) and
current (I)

Segment name
Variation (V)
Replication (R)