Akai DD1500

10 - SYSTEM SETUP
Page 50 Version 2.00 - March, 1996
NOTE: On many synchronisers and some pieces of video equipment, what they display as
30fps drop is actually 29.97fps drop. On the DD1500, 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 DD1500’s 30 drop-
frame with other equipment’s which may actually be 29.97fps drop.
VITC 25 fps - This selects that the DD1500 will synchronise
to VITC (Vertical Interval TimeCode) running at 25 frames
per second. This would normally be selected when sync’ing
to EBU VITC in Europe.
VITC 29.97 nd - This selects that the DD1500 will
synchronise to non-drop VITC running at 29.97 frames per
second. This would typically be used in America and Japan
when working with colour television.
VITC 29.97 drop - This will synchronise the DD1500 to
29.97 drop VITC. This would normally be used in America
or Japan when working with colour television.
VITC 30 non-drop - This selects that the DD1500 will
synchronise to VITC running at 30 frames per second. This
would typically be used in America and Japan when
working with NTSC black and white television.
VITC 30d NTSC BW - This will synchronise the DD1500 to
30 drop VITC. This would normally be used in America or
Japan when working with NTSC black and white television
(see SMPTE 30d NTSC BW).
Biphase 24fps x 2 - This selects that the DD1500 will sync
to bi-phase at 24 frames per second with 2 cycles per
frame. This is used when synchronising the DD1500 to film
equipment.
Biphase 25fps x 2 - This selects that the DD1500 will sync
to bi-phase at 25 frames per second with 2 cycles per
frame. This is used when synchronising the DD1500 to film
equipment.
Biphase 24fps x 4 - This selects that the DD1500 will sync
to bi-phase at 24 frames per second with 2 cycles per
frame. This is used when synchronising the DD1500 to film
equipment.
Biphase 25fps x 4 - This selects that the DD1500 will sync
to bi-phase at 24 frames per second with 4 cycles per
frame. This is used when synchronising the DD1500 to film
equipment.
Biphase 24fps x 10 - This selects that the DD1500 will sync
to bi-phase at 24 frames per second with 10 cycles per
frame. This is used when synchronising the DD1500 to film
equipment.
Biphase 25fps x 10 - This selects that the DD1500 will sync
to bi-phase at 24 frames per second with 10 cycles per
frame. This is used when synchronising the DD1500 to film
equipment.