Akai DD1500 User Manual page 57

NOTE 1: If a wordclock sync source is selected and is being successfully received, the
EXT W/C RCV LED next to the DL1500's timecode display will illuminate. If this LED
flashes, this indicates that there is some kind of problem with the wordclock (i.e. it is not
connected or the cable is faulty, whatever). Please check your connections.
NOTE 2: Recordings made at a sample rate other than the rate of the external wordclock
source will play back at the wrong speed. For example, if the wordclock being received is
44.1kHz and you try to play back a recording made at 48kHz, the recording will play back
slow. Please make sure that you are receiving the correct wordclock rate.
Version 2.00 - March, 1996
NTSC 30Hz (VITC in) - This selects that the DD1500's
DACs will synchronise to an NTSC 30Hz house sync signal
through the VITC SYNC BNC connection. This would
normally be used in Japan or America when 30 frames per
second timecode is being used.
WORDCLOCK A - This allows you to sync the DD1500's
DACs to a wordclock signal through the WORDCK (A) BNC
connection. This is used with a Sony PCM1630 that has a
separate SDIF wordclock output.
Here, you may choose the type of external timecode
synchronisation you are using and works in conjunction
with the EXT. TIME key. When the EXT. TIME key is not
switched on, the DD1500 is 'free running'. With the EXT.
TIME key switched on, the DD1500 will not playback or
record unless the timecode type selected here is received.
The selections in this field are:
SMPTE 24 fps - This selects that the DD1500 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 DD1500 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 DD1500 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 DD1500 to
29.97 drop timecode - NTSC colour. This would normally
be used in America or Japan.
SMPTE 30 nd - This selects that the DD1500 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 DD1500
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.
SYSTEM SETUP - 10
Page 49