Table of Contents
Advertisement
5.4.2 Horizontal Trend
This view is similar to the vertical trend mode described in Section 5.4.1 above, except that the traces are
produced horizontally rather than vertically. Initially, as each channel appears, its scale appears at the left edge
of the display (as shown below), but in order to show the maximum amount of trend data, the scale is overwritten
after a few seconds.
By default, after a few seconds, the
'chart' expands leftwards to hide the
scale. This feature can be disabled in the
Instrument.Display area of configuration
(Section 6.1.3, H.Trend scaling) so that
the scale is permanently on display.
Note: Timestamps appear to the right of the gridline to which they relate.
Use of the up arrow button causes the next enabled display mode to be entered (default = vertical bargraph).
Use of the page key calls the top level menu.
5.4.3 Vertical Bargraph
This display mode shows the channel values as a histogram. Absolute alarm threshold values appear as lines
across the bars, gray if the alarm is not triggered; red if the alarm is triggered. Alarm symbols appear for active
alarms.
Bargraph widths for four to six channels divide the width of the display screen equally between them. For one
and two channels, the width is fixed, and the bars are centred on the screen. Figure 19 shows some examples
(not to the same scale).
Full scale value
Active alarm symbol
Alarm threshold (active)
Alarm threshold (non-active)
'Zero' value
Use of the up arrow button causes the next enabled display mode to be entered (default = horizontal bargraph).
Use of the page key calls the top level menu.
Page 32
FEC920: USER GUIDE
Mode
Figure 18 Horizontal trend display mode
Mode
Channel 1
Inst name
Figure 19 Vertical bargraph display mode
A5E45696052A Rev-AA
Channel 1
Inst name
35.40
V
6.23
V
2 channels
1 channel
A
September 18
Advertisement
Table of Contents
