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6.9.3 Timecode (LTC) and Biphase A/B
(X3)
Timecode:
For sound synchronization of a DAT tape player with the
LOCPRO 35, e.g. during transfer of film and sound onto
video tape, a timecode signal is supplied on interface X3
➪ photo (see page 39).
The timecode signal (80 Bit per picture) is only supplied in
the forward running mode (to the right) with frame rates
of 24 fps, 25 fps or 30 fps. The read-out timecode frame
numbers correspond to those of the frame counter on the
display. A frame counter reset on the LOCPRO 35 therefore
also resets the timecode to zero.
The projection frame rate of the LOCPRO 35 has to be
matched to the DAT speed. This is possible via ”Mode”
Key (see chapter 6.4.2).
If the LOCPRO 35 is synchronized externally, ensure
accurate synchronization frequency within ± 1%.
1) Run the LOCPRO 35 and DAT tape player separately
to the sync point (starting position of transfer with
appropriate leader).
2) Connect the DAT tape player via interface cable (9 pin
Sub-D on XLP plug) with socket X3.
3) Reset frame counter to zero (”Reset” Key).
If necessary, set the timecode value supplied at the
sync point of the DAT recorder to offset so that the the
time code value ”0” emanating from the LOCPRO 35
corresponds to the value expected at the DAT recorder.
Start the transfer with the Master Control Knob.
Biphase:
Biphase operation is only possible with the Audio Sync
Unit (ASU).
To synchronize with external units, a sync pulse (1 pulse per
picture) is supplied on interface plug X3. When connected
to a programmable ASU, a biphase signal is generated
from this sync pulse.
(biphase A/B = moving direction recognition).
Plug type: 9-pin Sub-D socket.
Functions