MOTU Digital Timepiece Instruction Manual Page 100

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USING MIDI TIMEPIECE AV CONSOLE
98
tracks on your video deck, and selecting
INTERNAL/VIDEO as the sync mode, you can re-
stripe the tape with frame-lock accuracy.
If it doesn’t really matter to you that the time code
is not frame-locked, you can simply lock the MIDI
Timepiece AV to the SMPTE time code in LTC
mode (instead of LTC/VIDEO), which will provide
consistent, reliable sync.
Play (green arrow)
This status indicator (displayed in the MIDI
Timepiece AV front panel LCD as the current
sample rate, e.g. 48000 or 441000) means that the
MIDI Timepiece AV is generating or converting
SMPTE time code.
Stop (red box)
This status indicator means that the MIDI
Timepiece AV is not currently converting or
generating time code. On the front panel LCD, this
indicator also means that the MIDI Timepiece AV
has successfully locked to a time base.
Time base source
This indicator displays either internal or external
time base.
Sample rate
This status indicator shows the actual sample rate
being generated by the MIDI Timepiece AV based
on the current time base (either internal or
external). This display shows the number of
samples being generated per second (in kHz, e.g.
48.000 kHz). It allows you to measure how accurate
external time base sources are (such as video or
LTC). It is also affected by the sample rate settings
in the MIDI Timepiece AV, so it can help you chase
down discrepancies with pull-up and pull-down
samples rates.
THE ADVANCED MIDI WINDOW
The Advanced MIDI window, shown in
Figure 10-18, has several settings that are explained
in the following sections.
Figure 10-18: The Advanced MIDI window.
MIDI Machine Control options
These options turn on and off the MIDI Machine
Control features of the MIDI Timepiece AV. Most
of the time, you’ll want to control the transports of
all your gear from the computer. So leave the
“Transport master” option checked. In this
scenario, the computer is a synchronization slave
in most cases, as it slaves to MIDI Time Code
(MTC) generated by the MIDI Timepiece AV. So
leave the “Synchronization slave option checked as
well.
MIDI Machine Identification options
If you are using MIDI Machine Control, each
MMC device requires a unique MMC device ID,
including the MIDI Timepiece AV itself. For
convenience, the MIDI Timepiece AV
automatically sets the device IDs of all ADATs
chained off of its ADAT sync port. This means that
you dont have to do anything in regard to setting
the device IDs of your ADATs. The factory default
!USB Interfaces Manual Book Page 98 Tuesday, October 10, 2000 12:43 PM
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