Akai RE32 Operator's Manual download pdf (Page 170)

160 Version 1.00

SYSTEM SETUP

EBU 25fps (+4%) - This special selection should be made when working

with video material that has been derived from a frame-by-frame transfer

from 24 fps film to 25 fps video. When material is transferred in this way,

the visuals will actually run 4.1% faster when played from the video. As

a result, the system needs to playback audio with the same speed offset

in order to maintain sync.

This selection should be used when working with material that has been

transferred from film in this way. Whilst working with the video, the audio

will play back slightly faster and may sound unnatural but this is not a

problem as, ultimately, the audio will be played back synced to the master

film at 24fps at which point, correct playback speed will be restored.

NOTE 1: It is not possible to record audio when synchronised to this selection.

NOTE 2: You must select 25fps (+4.1%) as the time display style - see below.

SMPTE/EBU+RS422 - These options are available at all frame rates

and are for use with RS422 equipped VTRs when the selected machine

is acting as an RS422 master controller (i.e. when all playback, locating,

jogging, etc., of both the selected machine and VTR are controlled from

the RE32). SMPTE/EBU from the VTR is still connected as usual via the

EXT. TIME input and the ON-LINE key must be switched on. The selected

machine will receive timecode information in playback from the LTC

connection but, when working in slow motion, it receives timecode over

RS422 making locking of the two machines tighter.

NOTE: The SMPTE+RS422 selection described above MUST be used when using the selected

machine as an RS422 master.

SMPTE/EBU+VITC - These options are available on the DD1500 only

(at all frame rates) and allow the DD1500 to follow SMPTE/EBU timecode

as normal during playback but, during extremely slow motion playback

or jogging, the DD1500 automatically switches to VITC for better slow

motion lock between the machines. Naturally, both the LTC and VITC

inputs must be used when this timecode selection is made.

NOTE: When the DD1500 switches to VITC at very, very slow jog speeds, you will not hear

audio as you jog but you will notice improvements in the accuracy of frame locking at such

slow speeds.

RS422 - It is also possible to synchronise the selected machine to

timecode over RS422 only and all frame rates are supported. However,

you will note that this is primarily of use when using the system with a

non-linear video recorder (see the section that explains the RS422

functions for more details on this).

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Akai RE32 Operator's Manual Page 170