Recording Digitally - Akai DD1500 User Manual

RECORDING - 11

RECORDING DIGITALLY

When recording digitally, the DD1500 must synchronise to that digital audio signal's
wordclock. If you have selected a digital input to record through in the ROUTE INPUT
page, the input is selected automatically as the wordclock source by the DD1500 as soon
as you select a track for record.
If, for some reason, you select to record digitally but a digital input is not connected, as
soon as you try to select a track (or tracks) for record, you will get the prompt:
The digital input selected for recording will be shown - in this case, DIGITAL IN B has the
problem. You will not be able to select any tracks for record until the problem has been
fixed. Please check your digital audio connections.
If the digital audio signal gets disconnected or you select another digital input that has no
connection, you will receive this prompt:
If you are in the process of recording when this happens, the DD1500 will stop recording
and playback. Please check your connections.
If the DD1500's sample rate is one rate and yet the digital input receives another (for
example, the DD1500 is set to 44.1kHz but you send it 48kHz from your DAT machine),
you will receive the following prompt:
It will show the input A, B or C, whichever is selected. You will not be able to select tracks
for record until the sample rates match. However, using the example above of the
DD1500 being set to 44.1kHz and the digital input being 48kHz, setting the DD1500's
sample rate to 48kHz would play the other tracks in the project at 48kHz and so they
would play fast. However, if you record this signal at 48kHz and then reset the DD1500's
sampling rate to 44.1kHz, the project will playback at it's normal rate but the new recording
will playback slowly. It is not possible to play recordings made at different sampling rates
within one project in Version 2.00 software.
If you are syncing to some other external wordclock sync source (for example, 'black and
burst' house sync) and you select a digital input to record through, the DD1500 will
automatically switch its wordclock sync to the digital audio input as soon as you select a
track (or tracks) for record. As soon as you have made the recording and you de-select the
record tracks, the DD1500 will switch back to the house sync wordclock source. There may
be times, therefore, when recording digitally that the DD1500 is not precisely synchronised
to the house sync source.
Version 2.00 - March, 1996 Page 73