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If one of the channel plans has been selected, the scanning will be performed only over
the selected channels within the plan. In this case, after entering SCAN mode you will see
the selected channel plan name indicated by «Plan:» for a few seconds. The navigation by
◄ and ► keys will be fulfilled only within the selected channel plan. The channel name will
be displayed in position 3, modulation type will be displayed in position 6.
The graph reference level shown in Figure 4.3.8 is automatically set to the channel with
the maximum level.
You can access other measurement modes using functional keys. F1 key will open
LEVEL measurement mode (Section 4.3.2). F2 key will open RIPPLE measurement mode
(Section 4.3.4). F3 key will open SPECTRUM measurement mode (Section 4.3.5).
To control AMP power supply, enable the corresponding mode by a short pushing on
the
key (section 4.3.8).
4.3.4 RIPPLE measurement mode
This measurement mode is selected from SCAN mode by pressing F2 key. This mode
displays signal levels as vertical bars and the horizontal level lines between the peaks of
the two selected channels displaying the delta in the top of the screen. The screen view is
represented in the Figure 4.3.9:
On the screen you will see the following data:
1 – Channels ripple value between A and B markers
2 – A marker
3 – Command line with commands activated by F1, F2 and F3 keys
4 – Status of AMP power supply (Section 4.3.8)
5 – B marker
Adjust the marker position by ◄ and ► arrows. Selection of the marker is performed by
F1 and F3 keys and indicated by the asterisk in the command line.
If no channel plan is selected, all the channels of the channel template will be displayed
on the screen. Channel modulation type is determined automatically each time signal is
present on the input and what is shown by the progress indicator (channels scanning).
If one of the channel plans has been selected, the scanning will be performed only over
the selected channels within the plan. The navigation by ◄ and ► keys will be fulfilled
only within the selected channel plan.
The graph reference level shown in Figure 4.3.9 is automatically set to the channel with
the maximum level. The marker positions are saved into the memory and restore once you
enter RIPPLE measurement mode again.
You can return to SCAN measurement mode by pressing F2 key.
AMP power supply, is controlled by pressing the
Figure 4.3.9
key briefly (section 4.3.8).
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