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With video equipment that cannot output SMPTE Time Code
To sync an ordinary consumer-use video tape recorder (VTR not capable of outputting SMPTE Time Code)
with the DM-80, carry out the following:
(1) Record onto the video tape's audio track the SMPTE LTC signals (time code signals) from the DM-80-
8/4. In this case, the DM-80 is used as the master of a SMPTE Time Code.
To DM-80-F or DM-80-R
69606
SMPTE LTC
T
DM BUSS
SMPTE LTC OUT
a
~°
A
area
ces
SMPTE
LTC
A FF
Pele)
Signal
a
etc
Ko 6
Audio IN
VTR
t=
[Using the DM-80 as the Master in a SMPTE Configuration]
Since the DM-80-L assures the production of SMPTE Time Code which is precise and reliable, with
almost no divergence from the actual time, the DM-80-L makes it possible for the DM-80 to be
used as the master in a SMPTE configuration.
The DM-80 relies on the playback rate (sample rate) of its audio digital data as the basis for its
SMPTE Time Code. (When the "Time Base" is at "Internal.") However, the frequency of the
oscillator (which provides the point of reference for the DM-80's sample rate) can shift by
minuscule amounts as a result of changes in the temperature of the surroundings. For this reason,
a certain amount of divergence from the actual time can occur when time code is produced over
an extended period of time. For example, you might be able to observe that after, say, two hours
of SMPTE Time Code production, that the 2nd hour as indicated by the code had occurred either
slightly earlier or later than the actual time would indicate.
By using the DM-80-L, such divergence from the actual time will be almost nil. Make the
connections as shown above. Also, make sure to set the DM-80's "Sampling clock source"
parameter to "Video sync."
(2) Input the playback of these SMPTE LTC signals to the DM-80-L's SMPTE LTC IN jack to sync with the
DM-80 System. The connections should be made as explained previously (p. 7).
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