DeltaOHM HD31, Operating Manual

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HD31
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V1.6
Fig. 3.8.3: horizontal cursors
The ZOOM command ( F3 key) enlarges the graph area included between the two horizontal
cursors: the minimum and maximum values of the ordinate axis are equal to the values indi-
cated by the lower and the upper cursor respectively. The indication AUTO (automatic ordinate
scale) is replaced by the indication ZOOM over the graph, on the right.
The
AUTO command ( F1 key) allows zooms to be disabled and to return to the automatic or-
dinate scale.
Fig. 3.8.4: AUTO command
Vertical cursors and x-axis scale:
Selecting X command ( F1 key) displays the vertical cursors of the abscissa axis (x-axis).
The CUR command ( F2 key) activates alternatively the lower or the upper cursor. The active
cursor appears light blue, while the non-active cursor is white. The active cursor can be moved
using <<< ( F1 key) and >>> ( F3 key) commands. The time distance between cursors ( Δ x) and
the difference of the two measurements in correspondence with the cursors ( Δ y) appear over the
command bar.
Fig. 3.8.5: vertical cursors
Press ESC to return to the previous command level.
The time interval between two vertical lines of the graph grid is set by default to 1 minute. Select
Δ X command ( F2 key) to change the interval.
Upper cursor
Lower cursor
Lower cursor position Upper cursor position
Right cursor Left cursor
Difference of measures in corre-
spondence with the cursors
Time distance between cursors