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Topics in this section include:
Timecode and Sync
Timecode
The 664 features a fully-integrated
Ambient™ timecode generator and
reader that supports all common rates
and modes. The 664 holds accurate
timecode for up to two hours after
shutdown, using an internal, Lithium-
Ion timecode battery. This timecode
battery is charged whenever the 664
is powered on or by plugging the 664’s
USB connector into a USB power source.
i
After two hours without power, the 664
reverts to a slightly less-precise time-
of-day crystal to maintain the date and
time on the device.
Word Clock connectors on the back
panel allow the 664 to be sample
synchronized with other digital audio
equipment in the work flow.
File-based recorders place a timecode and frame rate stamp in the BEXT and
iXML chunks of an AES31 broadcast WAV file. During playback, the mixer
generates SMPTE timecode from this number and extrapolates it based on the
timecode frame rate. All files generated by the mixer have timecode numbers
that begin on the 0 frame (or 02 in DF modes) and end on the 0 frame such
that a file’s duration is always an integer number of seconds long. If necessary,
pre-roll and post-roll is dynamically applied to accomplish this, simplifying
synchronization in post-production. The timecode value and frame rate of the
664 are displayed on the Main screen.
Timecode
Frame rate or sample rate
i
If sample rate is displayed–as shown–instead of the frame rate, toggle the view to
frame rate by holding METERS down and slide the A B/C switch to the left.
Summary of Contents for 664
Page 1: ... 664 Field Production Mixer with Integrated Recorder User Guide ...
Page 4: ...User Guide 4 ...
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Page 118: ...User Guide 118 Status Bar Viewing Area Tab Bar ...
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