4.4.3. Limit Plans
4.4.3.1. Limit Plan List
Limit plans contain the criteria for checking the channel parameters and are
employed during measurements in Channel data logger mode.
This mode allows performing all the operations with limit plans: viewing, editing,
deleting, and creation of new pages. See the view of the screen in figure 4.13.
The table contains the limit plan name and the date of its creation or editing. The
plans in the table are sorted by name. The top row of the table always contains the
Default
plan, which is not available for editing.
Figure 4.13
Press
F1
to open the pop-up menu with the list of available commands:
1.
Edit
. Viewing and editing of the selected limit plan;
2.
Rename.
Editing of the limit plan name;
3.
Delete
. Deleting of the selected limit plan.
Also you can add a new limit plan by pressing
F2/Add.
4.4.3.2. Editing Limit Plan
The screen view of the limit plan is shown in the figure 4.14:
Figure 4.14
The table contains the TV channel parameters and upper and lower limits which are
compared with the measured parameters in the channel data logger.
The following parameters are represented in the table:
1.
Min Video Level.
The minimum possible value of analog channel level.
2.
Max Video Level
. The maximum possible value of analog channel level.
3.
Min V/A (dB)
The minimum possible value of V/A ratio.
4.
Max V/A (dB)
The maximum possible value of V/A ratio.
5.
Min C/N (dB)
The minimum possible value of C/N ratio.
6.
Max Adj. Channel Delta (dB)
. The maximum possible value of difference
between adjacent channel levels.
7.
Max Level Delta (dB)
. The maximum possible value of difference between
channel levels.
8.
Max An/Dg Delta (dB)
. The maximum possible value of difference between
the levels of digital and analog channels.
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