DEVA Broadcast DB4004, Инструкция по техническому обслуживанию и эксплуатации

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Marker control state:
Up to two markers , named “ A ” and “ B ” are available in Bandscan page . SB1 , SB2 , Left and
Right buttons controls the visibility and position of the Markers .
Button assignments:
( SB1 ) / ( SB2 ) controls Marker A / Marker B appearance. There is
three states of each marker:
• hidden – marker is not visible;
• shown –
marker
is visible but is not selected;
• selected – marker is visible and selected.
For
markers
in visible state (shown or selected) a readout for X and Y axes appear on the left
side of the data plot. If both markers are visible the differential “ Marker B – Marker A ” values
become available at the bottom left.
Selected marker is drawn with highlighted dashed line, the marker readout is highlighted
also. There can be only one selected marker at the time. If only one marker is visible it is always
selected.
Marker A is shown, Marker B is selected
The logic of transition between these states is explained in following diagram:
Marker
is hidden
Marker
is selected
Marker
is shown
SB1 or SB2
press
SB1 or SB2 press
Left / Right Buttons – move selected marker to the left / right with one screen pixel increment.
NOTE: The step resolution of marker movement depends from selected X span.
Up / Down Buttons – just like in Span control state Up and Down buttons us used to change the
Y reference
.