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nanodac
49 MC27 EN1.04
4.5 TREND HISTORY
Entered from the top level menu (Section 4.1), this allows vertical and horizontal traces to be reviewed for
Trend group channels. The amount of data displayed in one screen depends on the ‘Zoom In/Out’ setting
in the History menu (Section 4.5.2Error! Reference source not found.) and on the recording interval
selected in Group Recording configuration (Section 5.2.2). It is also possible to enter a time and date to
which the history then jumps.
The history display is identical in appearance with the trend display except:
1. History displays can include messages if so configured in the History menu.
2. For horizontal trends, the scale is displayed permanently at the left edge of the display.
Figure 1.5a Top level menu
4.5.1 Navigation
SEARCH FOR
In the history display, holding the up or down arrow key operated for
approximately two seconds produces a ‘Search for’ display which
allows the user to enter a time and date. Once a time and date have
been entered, ‘Yes’ then causes the history display to jump to that
time and date (if such history exists).
To enter a time and date:
1. Use the up/down arrows to highlight the item to be edited.
2. When highlighted (orange background), operate the scroll button. The highlighted text turns black.
3. Use the up and down arrow keys to scroll to the required value for the field, then operate the scroll
button again. The text goes white.
4. Repeat the above editing process for all the remaining items which are to be edited.
5. Use the up/down keys to select ‘Yes’. The ‘Search for’ window closes, and the history display jumps
to the selected time and date.
Notes:
1. If no history exists for the selected time and/or date ‘No History Available’ is displayed.
2. The time and date format and Daylight Savings Time (DST) effects are as set in the ‘Locale’
area of Instrument configuration.
Home
Configuration
Go to view
History
Facepalte cycling (Off)
Operator Notes
Demand Archiving
Log out
Enter trend history mode
Search for
10:31:58 21/09/13
Cancel Yes
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