DeltaOHM HD31, Operating Manual

Page: 63 / 154

HD31
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V1.6
7.9 S
TORED DATA GRAPH
The functions already described at paragraph 3.8 concerning the graph of the real time meas-
urements are made available by displaying, through the PLOT command, the stored data
graph. The only difference concerns the management of the x-axis zoom: x-axis zoom cannot
be performed using real time data (only the x-axis scale can be changed, causing the graph to
be reinitialized, since data are not stored); on the contrary, with the stored data a time inter-
val can be selected using the two vertical cursors and the graph area comprised between the
two cursors can be enlarged by pressing SELECT .
Fig. 7.9.1: stored data horizontal zoom
If the data were stored with an automatic logging, the number displayed on the right under
the graph indicates the time corresponding to a pixel on the display (e.g. 27s/p indicates 27
seconds per pixel). The number depends on the logging interval and on the zoom applied. The
number is not indicated if the data were stored with a manual logging (in this case, also the
value of Δ X is not indicated).
Select the FULL command ( F2 key) to cancel the zoom and return to the full x-axis.
Fig. 7.9.2: FULL command
Note : by displaying the stored data, the FULL command replaces the Δ X command (x-axis
choice) available when real time data are displayed.