360 Systems Short/Cut Editor - Manual (Page 25)

Rear Panel Features Page 17
Shortcut 2000 Editor Owner’s Manual
Using External Sample Rate Synchronization
In order to use Shortcut with some digital mixers, routers, and multi-track recorders, it is
necessary to reference its sample rate to an outside source. This is accomplished by
connecting a digital audio signal from another unit that is the reference or is synchronized to
the reference.
The reference signal must always be present and stable, and it must be within 4% of the
chosen sample rate for the current directory. (46080-49920 Hz. for 48K, 42336-45864 Hz for
44.1.) Note that some older Shortcut units do not support frequency measurement and
therefore will not detect that the sample rate is out of specification.
The signal is often the same signal that is used to input digital audio to the Shortcut, such
as a buss or master output from a digital mixing console, the audio input feed from a router or
an output of a digital multi-track. Any constant AES format digital audio signal that is derived
from the master or house sync can be used. Shortcut cannot directly sync to word clock or
video references.
The digital audio input used by the External Sync (and D-NET Echo) is selected
independently of the audio input used for recording. To select this input:
1. Press M ENU twice to select the Setup Menu.
2. Press the 8 KEY or
Scroll down to item 8. SYNC/ECHO INPUT using the Scrub Wheel and press
E
NTER .
3. Use the A RROW KEYS or the S CRUB W HEEL to select either the XLR or BNC
connectors.
4. Press E NTER to confirm your selection.
To set Shortcut to use an external reference:
1. Press M ENU twice to select the S ETUP M ENU .
2. Press the 7 K EY or
Scroll down to item 7. SYNC SOURCE using the S CRUB W HEEL and press
E NTER .
3. Use the Arrow keys or the Scrub Wheel to select either EXTERNAL or
INTERNAL.
4. Press E NTER to confirm your selection.
If the external reference signal is missing or bad, the S TOP button will flash and the
message “(SYNC INPUT BAD)” will be shown in the top line of the display. It is not possible
to play or record while the unit is in this condition. When the correct signal is applied the unit
will automatically lock to it and clear the error displays.
Note that when recording using the digital inputs, sync is always derived from the digital
input being recorded, even if it is not the one selected for external sync. This only presents a
problem when recording from a device that is not synchronized to the sample rate of the
monitoring system. During the recording, the connection from the Shortcut digital output to the
monitoring system will not be locked to the sync reference. The recording itself will be
unaffected and will sound perfect on subsequent playback. Once the recording is finished, the
sync reference will return to the external reference input for playback.
All other operations are the same as when using internal sync.