Ops 5–12 • Transitions Vision Operator’s Manual (v12.0 MD)
Performing Transitions
A transition can be performed on almost any combination of the background and keyers,
depending on the type of transition you are performing, and what you are transitioning. These
factors include the number of Squeeze & Tease resources you have, and if you are trying to
perform a background and keyer transition at the same time.
Transition Restrictions and Rules
The following restrictions apply to all transitions performed on and MLE or an AuxKey:
• If you are performing an Auto Transition, moving the fader off of a limit will freeze the
transition. You must finish the transition with the fader.
• The time duration of a transition will vary, depending on the video format the switcher is
operating in. Transition rates are set in frames, not seconds.
• If there are not enough Squeeze & Tease resources available to perform a Squeeze &
Tease Wipe transition, a dissolve is performed instead.
• The Program Output BNC is only fed from the Program/Preset MLE. Any other MLE
will have to be re-entered onto that MLE to be part of the Program Output.
• If an auto transition includes both the background and a keyer, the MLE Rate is used for
the transition.
• If the fader is moved during an auto transition, control of the transition is passed to the
fader. You must complete the transition with the fader. This allows you to override any
auto transition in progress with the fader.
Performing a Fader Transition
A fader, or manual, transition is performed by moving the fader handle from one limit to the
other. The speed at which you move the fader determines the rate at which the transition is
performed in real time. Fader transitions also allow you to hold a transition at any point, as well
as reversing the transition back to the starting point.
Note — Key transitions are performed in the same way as Background transitions. To perform
a key transition, select the video sources you want on the Keyer bus, and select the keyer on
the Transition Modules.
Use the following procedure to perform a fader transition:
1. Select a video source on the Background bus of a Program/Preset MLE. This is the
on-air video signal.
Note — If a non-synchronous source is selected on a crosspoint bus, the crosspoint button
flashes, indicating that the source is mis-timed. Refer to the section “Non-Sync Detection” on
page Eng 7-9 for more information non-sync detection.
2. Select the video source that you want to transition to on the Preset bus of the same MLE
(Figure 5.18).
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