Panel Lock; Preset Release; Previous Source - GRASS VALLEY NV9640 User Manual

This button scrolls the list down. 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 a list of levels in X-Y mode or a list of MD devices in MD mode. There are 3
options for scrolling:
1 Scrolling the display only. The items on the selection buttons do not scroll.
2 Scrolling the selection buttons only. The items on the display do not scroll.
3 Scrolling both the display and the selection buttons at the same time. This behavior can
occur only when the panel has no 'VFD/SEL Toggle' button.
If the panel has a 'VFD/SEL Toggle' button, you can switch between options 1 and 2. The button
will read either "Paging VFD" or "Paging Sel Buttons. "
When you scroll the selection buttons, they scroll modulo the number of buttons. For instance, if
there are 9 buttons, they scroll in groups of 9 items.
This button scrolls the list up. 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 illu-
minate 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 NV9640.)
Press the 'Preset Release' button to release the source.
The default button text is "Preset Release" but the button can have any legend.

Previous Source

This button presets the previously selected source for the current destination. This function is
useful when you make a route in error.
To recover the previous source, press 'Previous Source' . When you do, the 'Take' button goes
high-tally. Then press 'Take' to recover the source.
The default button text is "Previous Source" but the button can have any legend.
NV9640
User's Guide
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