MOTU 828mkII User Manual page 104

receiving the SMPTE time code by choosing it
from SMPTE source menu. For further details on
the hardware connections involved, see "Syncing
to SMPTE time code" on page 27.
Resolving to video
To resolve the 828mkII to video, you need a
synchronizer such as a MIDI Timepiece AV or a
Digital Timepiece and feed word clock to the
828mkII. In this scenario, choose SMPTE / Word
Clock In clock/address setting. The 828mkII uses
word clock for the time base and SMPTE for
address. For details, see "Syncing to video and/or
SMPTE time code using a synchronizer" on
page 28.
FRAME RATE
This setting should be made to match the SMPTE
time code frame rate of the time code that the
system will be receiving. The 828mkII can auto-
detect and switch to the incoming frame rate,
except that it cannot distinguish between 30 fps
and 29.97 fps time code. So if you are working with
either of these rates, make sure you choose the
correct rate from this menu. The 828mkII driver
updates the frame rate setting in Digital Performer
and AudioDesk for you. For ASIO applications,
however, you need to make sure that their frame
rate it set properly.
READER SECTION
The Reader section (on the left-hand side of the
window in Figure 14-1) provides settings for
synchronizing the 828mkII to SMPTE time code.
Status lights
The four status lights (Tach, Clock, Address and
Freewheel) give you feedback as follows.
Tach
The Tach light blinks once per second when the
828mkII has successfully achieved lockup to
SMPTE time code and SMPTE frame locations are
being read.
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Clock
The Clock light glows continuously when the
828mkII has successfully achieved lockup to an
external time base, such as SMPTE time code or
word clock.
Address
The Address light glows continuously when the
828mkII has successfully achieved lockup to
SMPTE time code.
Freewheel
The Freewheel light illuminates when the 828mkII
is freewheeling address (time code), clock or both.
For details about Freewheeling, see "Freewheel
Address" and "Freewheel clock" below.
Freewheel Address
Freewheeling occurs when there is a glitch or
drop-out in the incoming time code for some
reason. The 828mkII can freewheel past the drop-
out and then resume lockup again as soon as it
receives readable time code. Choose the amount of
time you would like the 828mkII to freewheel
before it gives up and stops altogether.
The 828mkII cannot freewheel address without
clock. Therefore, the Freewheel Address setting will
always be lower than or equal to the Freewheel
Clock setting, and both menus will update as
needed, depending on what you choose.
Keep in mind that freewheeling causes the system
to keep going for as long as the duration you choose
from this menu, even when you stop time code
intentionally. Therefore, if you are starting and
stopping time code frequently (such as from the
transports of a video deck), shorter freewheel
times are better. On the other hand, if you are
doing a one-pass transfer from tape that has bad
time code, longer freewheel times will help you get
past the problems in the time code.
M O T U S M P T E C O N S O L E