MOTU 8pre User's Guide download pdf (Page 74)

MOTU SMPTE CONSOLE

detect and switch to the incoming frame rate,

except that it cannot distinguish between 30 fps

and 29.97 fps time code, or 23.976 and 24 fps time

code. So if you are working with either of these

rates, make sure you choose the correct rate from

this menu.

READER SECTION

The Reader section (on the left-hand side of the

window in Figure 10-1) provides settings for

synchronizing the 8pre USB 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

8pre USB has successfully achieved lockup to

SMPTE time code and SMPTE frame locations are

being read.

Clock

The Clock light glows continuously when the 8pre

USB has successfully achieved lockup to an

external time base, such as SMPTE time code or

the S/PDIF input.

Address

The Address light glows continuously when the

8pre USB has successfully achieved lockup to

SMPTE time code.

Freewheel

The Freewheel light illuminates when the 8pre USB

is freewheeling address (time code), clock or both.

For details about Freewheeling, see “Freewheel

Address” and “Freewheel clock” below.

SMPTE source

Choose the analog input that is connected to the

time code source. This is the input that the 8pre

USB “listens” to for time code.

Freewheel Address

Freewheeling occurs when there is a glitch or

drop-out in the incoming time code for some

reason. The 8pre USB 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 8pre USB to freewheel

before it gives up and stops altogether.

The 8pre USB 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.

The ‘Inﬁnite’ freewheel setting

The Inﬁnite freewheel setting in the Freewheel

Address menu causes the 8pre USB to freewheel

indeﬁnitely, until it receives readable time code

again. To make it stop, click the Stop Freewheeling

button.

Freewheel clock

Freewheeling occurs when there is a glitch or

drop-out in the incoming SMPTE time code for

some reason. The 8pre USB can freewheel past the

drop-out and then resume lockup again as soon as

it receives a stable, readable clock signal.

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MOTU 8pre User's Guide Page 74

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