Miranda NV9642, Руководство пользователя

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NV9642 Control Panel • User’s Guide 53
5. Operation
Operating Concepts
Other kinds of buttons can cause the display of a target page. These include ‘Global Navigate’ but-
tons and category buttons. In practice, navigate buttons, global navigate buttons, and category but-
tons are nearly indistinguishable, although the pages they display can be quite different.
See the Category button type.
Global Navigate
A ‘Global Navigate’ button functions the same way a navigate button does. Global navigate buttons
exist mainly for the convenience of the configurer. Operators should rarely notice any difference
between global navigation buttons and other navigation buttons.
Global navigate buttons, however, access only static button pages. They do not access list pages.
That is because configurers have no list options for global navigate buttons.
Page Down
This button scrolls the alphanumeric display down . Scrolling is necessary when the number of lines
to display is greater than 8. The ‘Page Down’ button becomes enabled when it is possible to scroll
down and is disabled when it is not possible.
The default button text is “Page Down” but the button can have any legend.
Page Up
This button scrolls the alphanumeric display up . Scrolling is necessary when the number of lines to
display is greater than 8. The ‘Page Up’ button becomes enabled when it is possible to scroll up and
is disabled when it is not possible.
The default button text is “Page Up” but the button can have any legend.
Panel Lock
A panel lock button prevents changes to the panel settings, especially router crosspoints. When the
panel is locked, the button array becomes blank except for the ‘Panel Lock’ button which becomes
high-tally red.
The button is a toggle: press the ‘Panel Lock’ button to lock the panel. Press it again to unlock the
panel.
The button text is either “Panel Lock” or “Panel Unlock.”
Preset Release
This button removes locks and protects from preset source devices. (If source locks and protects are
not used in your system, this button is not needed.)
If you select a source and someone else has locked or protected the source, your panel will illumi-
nate the ‘Preset Release’ button and tell you who locked or protected the source. You can release it
if your panel has “forced release” enabled. (Note that you cannot lock or protect sources with the
NV9642.)
Press the ‘Preset Release’ button to release the source.
The default button text is “Preset Release” but the button can have any legend.