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BLACK
BOX
BBR
64
MADI
&
BBR
64
DANTE
RECORDER
- User Manual v3.0
Page | 23
Setup...
This section contains the most frequently adjusted parameters.
Reference Clock
This very important item determines where the digital sample clock is derived from.
The options include extracting the clock from
the
MADI
or
DANTE
input; using the external
word clock
BNC connector; less often, the
S/PDIF
external clock from the RCA (Phono)
socket on the rear panel or clocking the whole
system from the
internal
reference oscillator
when the BBR is the clock master for everything.
It is very important that you understand why digital clocking is important, if you don’t
know already, especially if the concert is being filmed or videoed at the same time.
Please spend some time talking to people further down the post production process
to find out what they would like or recommend, or consult our FAQs on the JoeCo
website.
Timeline
Broadcast WAV files include a timecode stamp which marks the time of the first
sample of the file and helps re-sync the files in the post production process. This can
be derived from a source of Linear Timecode (
LTC
) or MIDI timecode (
MTC
) or from
the
real-time
clock built into the BBR. The LTC input is unbalanced on the tip of a ¼”
TRS jack.
The BBR can only read timecode (i.e. act as a timecode Slave) it cannot generate
timecode (i.e. act as a timecode Master). The BlackBox does not chase timecode or
lock to it; it stamps the first sample in each file with the timecode and extrapolates
from there.
Sample rates
Selectable between
44.1kHz
,
48kHz
,
88.2kHz
and
96kHz
. At the double sample rate speeds, the
track count is divided by two turning both the
MADI and DANTE recorders into 32 track machines