100/180MM DISTRIBUTED GRAPHIC RECORDER: USER GUIDE
Page 62
HA029324
Issue 11 Oct 14
4.3.2 GROUP CONFIGURATION (Cont.)
GRID TYPE
Grid type allows the chart grid type to be defi ned for the group being confi gured. This is not necessarily
related to channel scale (
section 4.3.3
), unless ‘From point’ is selected, when the grid matches the scale
of the selected point.
NONE
No chart grid is traced.
LINEAR
The chart grid is linear, with the major and minor divisions defi ned by the fi elds Grid Divisions - Major and Mi-
nor, which appear if ‘Linear’ is selected as grid type. Figure 4.3.2c, below, defi nes major and minor divisions.
LOG
The chart grid is logarithmic, with the number of decades being selected in the ‘Grid Decades’ fi eld
which appears if ‘Log’ is selected as Grid Type. Figure 4.3.2c gives an example.
Note: For the small frame recorder, the minor divisions within each decade are shown only for
groups with ‘Number of decades’ ≤ 5.
FROM POINT
This allows the chart grid to be aligned with the scale of a particular ‘point’, selected in the ‘from’ fi eld
which appears if ‘From Point’ is selected as ‘Grid Type’
Figure 4.3.2c Typical chart grid defi nitions
RECORDING ENABLE
This tick box allows the logging of this group’s data to the fl ash memory to be enabled/disabled. When disabled:
a
The recording speed/interval fi elds are not editable, and Trend History duration is set to zero.
b
Display trends are present on the chart, but are not preserved when changing ‘Views’.
c
It is not possible to enter trace history if ‘Recording Enable’ is not selected.
Notes
1 A blue line is drawn across the chart, when recording is re-enabled to indicate a time change in
the trace.
2 If a ‘Recording enable’ job (
section 4.7.9
) is set to act on a particular group, then the group will
be recorded only whilst the job is active,and only if Recording is enabled for the group.
Five major divisions
Two minor divisions
Nine major divisions
Three minor divisions
Three decades
Linear scale
Linear scale
Log scale
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