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DD8
plus Version 2.20 - September 1998
In this page, the OUTPUT FORMAT field allows you to set the format for the digital outputs of the
IB-D8MA24 board and you may choose PROFESSIONAL or CONSUMER. PROFESSIONAL
would be the choice to make when interfacing with AES/EBU digital audio equipment whilst
CONSUMER would be the choice when connecting to DAT machines that use the SPDIF format
of digital inputs.
NOTE: There is no equivalent page for the digital inputs because the DD8’s digital audio
receivers can automatically detect the format and adjust accordingly.
SYNC
Pressing SYNC (F2) on the main System Settings page takes you to the synchronisation menu:
Pressing Source (F1) moves the cursor to the External Time Source field.
Here, you may choose the type of external timecode synchronisation you are using. When the
SYNC key is switched on, the DD8 will not playback or record unless it is receiving the timecode
type selected here. The available options depend on which option boards are installed.
NONE - This options turns off the DD8’s timecode synchronisation.
SMPTE 24 fps - This selects that the DD8 will synchronise to timecode running
at 24 frames per second. This would be a typical selection to make when
synchronising to film equipment.
EBU 25 fps - This selects that the DD8 will synchronise to timecode running at
25 frames per second. This would normally be selected when sync’ing to EBU
timecode in Europe.
SMPTE 29.97 nd - This selects that the DD8 will synchronise to non-drop
timecode running at 29.97 frames per second. This would typically be used in
America and Japan when working with NTSC colour.
SMPTE 29.97 drop - This will synchronise the DD8 to 29.97 drop timecode -
NTSC colour. This would normally be used in America or Japan.
SMPTE 30 nd - This selects that the DD8 will synchronise to non-drop timecode
running at 30 frames per second. This is the standard for NTSC black and white
television and would typically be used in America, Canada and Japan. Many
American and Japanese music studios use this frame rate.
SMPTE 30d NTSC BW - This will synchronise the DD8 to 30 drop frame timecode.
This is the standard for NTSC black and white television and would occasionally
be used in America, Canada or Japan.
NOTE: On many synchronisers and some pieces of video equipment, what they display as
30fps drop is actually 29.97fps drop. On the DD8, 30d NTSC BW is actually 30 frames per
second, dropping a frame every now and then and so runs a little under 1% faster than true
29.97fps drop. You should select 29.97 drop when working with NTSC colour in America,
Japan or Canada and 30 drop when working with black and white. 30d NTSC BW is unlikely
to be used very often but please do not confuse the DD8s 30 drop-frame with other equipment’s
which may actually be 29.97fps drop.
SYSTEM - 8
