Grass Valley SMS-6000 Series - Manual (Page 96)

4-4
Section 4 — Control Panels
Lock
This button allows you to protect a source/destination selection. The
LOCK button locks the panel or other panels from making further
selections. The lock mode can function in several ways; it is possible to lock
your own panel, or all other panels or even all panels; further, when you
press the LOCK button it can lock just the current destination or it can lock
all destinations. The choice of lock modes is set in the software
configuration.
1. Press the button once to lock the selection/panel. The LED lights to
show that the panel is locked.
2. Press the button again to unlock the selection/panel.
3. The panel remembers the lock status so that when a destination is
locked and this destination is reselected then the lock button will light
to show that this destination is locked.
Trace
Sometimes you may want to take a signal source out of service, but you are
not sure if it is being used anywhere. The Trace feature allows you to check
quickly to which destinations a particular source is being sent.
1. Select the lock mode.
2. Press and hold the SELECT button for the source you wish to trace.
Note that the LED does not light up.
3. After about half a second the SELECT buttons will light to show you all
the destinations to which the source is currently being routed.
4. Release the button when you have finished and the panel will revert to
its normal mode, although you must exit the lock mode before you can
make new crosspoint selections.
Chop
This feature is useful for engineering checks and system alignment of gains
and phasing. In this mode the output switches rapidly between two inputs.
Note that you can select chop mode only when a single breakaway is
selected. The output remains in chop mode until any button on the panel
is pressed, or until a source is changed on the current destination by
another control panel or by an external computer.