4-2-3 Dynamic Motion Control (DMC) Playback

Overview

DMC playback allows you to vary the playback speed for a certain section of a tape, in variable speed mode (from –1 to +3 times normal speed for digital Betacam playback, from –1 to +3 times normal speed for MPEG IMX playback, from –1 to +2 times normal speed for Betacam SX playback, or from –1 to +3 times normal speed for analog Betacam playback), and store the varying speed in memory for later playback at the same varying speed.

For example, during a live broadcast of a sporting event you can set the start and end points of highlights while recording, and then provide immediate DMC playback of those highlights.

During DMC playback the tape moves as shown in the following figure.

4 Chapter

On-air start point

Preroll point

Speed variation start point

Waiting for the on-air cue

Stop

 

Press the REVIEW button.

before starting DMC

 

playback

 

 

Normal speed

 

 

Press the REVIEW button again

 

 

 

playback

 

 

DMC playback

at the on-air cue.

 

 

 

 

 

 

 

 

 

 

Starting DMC playback

 

 

 

 

immediately after preroll

Press the

PREVIEW button.

 

 

 

 

 

 

 

Normal speed

 

 

DMC playback

 

playback

 

 

Speed variation end point On-air end point

Normal speed playback

Stop

Normal speed playback

Playback and Recording

Storing a varying playback speed in memory

To store the playback speed for DMC playback, use the following procedure.

Note

Make sure that the TSO PLAY of setup menu item 111 is set to DIS beforehand.

Z

1,4 5 2 7 3 3,4,6

1Press the DMC EDIT button, turning it on.

2Either while playing back the recorded tape, or during recording, press the ENTRY button and one of the following buttons simultaneously, to set the start and end points.

•On-air start point: AUDIO IN button

•Speed variation start point: IN button

•Speed variation end point: OUT button

•On-air end point: AUDIO OUT button

Each press turns the corresponding button on.

3Press the search dial or the SHUTTLE button or VAR button to enter shuttle/variable speed mode.

The SHUTTLE/VAR indicator lights.

(Continued)

Chapter 4 Recording and Playback

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