Dolby Laboratories DP503 - Manual (Page 22)

2A-6
I S D N
Dolby
Fax Dolby
Fax
Picture
Picture
(optional)
Offset
Location X
Audio
Timecode
or bi-phase
Notes
2 Audio Channels from X to Y,
(1 Audio Channel from Y to X for code/bi-phase).
Timecode Offset should be set to total path delay
from Y to X to Y. This can be measured by
sending timecode from Y and looping it back via
X, so the offset can be read.
Where the picture is on film, bi-phase can be used
for synchronisation instead of time code by using
an external bi-phase to timecode generator.
As both channels are independent, Dolby Stereo and
Dolby Surround Lt Rt tracks can be sent with the
Dolby Fax. In this case they can be decoded to LCRS
at Location Y.
Applications
Post production:
Soundtrack approval
to picture
K e y
Location Y
B
A A
A
A
B
Audio
Source
Soundtrack Approval
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