Owner`s manual

the matching audio Machine number for a set of adjacent channels on the mixer or individual

channels if these are spread across the mixer.

In the edit suite, when executing “A/B Roll” edits the Edit Controller will select the source (or

FROM) Machine which is to be heard prior to the edit transition point.

When this selection is received from the Edit Controller, the interface will cause the mixer to

open the set of channel faders which represent the inputs for the FROM Machine. The audio

from this Machine will be sent to the main Program mix buses.

The Edit Controller will also select a destination (or TO) Machine (to be heard after the edit

transition has been completed), and a transition duration time in frames. This information is

stored within the BVE02 interface.

At the appropriate time, the edit controller will issue a command to start the transition. The

BVE02 will then control the channel faders of the mixer to smoothly crossfade from the FROM

source Machine to the TO source Machine.

This transition may be observed by the changing positions of the motorised channel faders on

the mixer. At the end of the transition time the audio from the destination Machine will be

heard on the main mix buses.

In the Production Gallery, the process is very similar with the source currently open to the

Program bus defined as the FROM source and the next vision source To Air on the Preset bus

as the TO source. The audio crossfade from the channels of the FROM source to the channels

of the TO source is triggered by the Auto key or T-bar on the Vision Switcher.

Once the transition or crossfade is completed, the designation of the new Machine on the

Program bus is now changed to FROM and the next source on the Preset bus as the new TO,

ready for the process to be repeated.

Preview and Monitor Operations

Video Edit Controllers generally consider that their control of the VTRs, the video switchers,

and audio mixers will be in one of three states:-

Monitor

The operation of the VTRs, video switcher, and audio mixer is controlled by the manual

operation of the Edit Controller. This is the mode used to find and mark edit points.

Preview

The operation of the VTRs, video switcher, and audio mixer is directly controlled

by the Edit Controller according to automatic execution of EDL commands

without the result being actually recorded by the Record VTR(s). This is

sometimes called Edit (Rehearse).

Edit

The operation of the VTRs, video switcher, and audio mixer is directly controlled

by the Edit Controller according to automatic execution of EDL commands with

the result being recorded by the Record VTR(s). This is sometimes called Edit

(Execute).

While the operation of the audio mixer during Edit mode operations has been already

described, the precise operation of the audio mixer during Preview and Monitor mode

operations varies according to the setup of the Edit Controller. It is therefore crucial that the