Avid Technology Digidesign USD, Руководство пользователя, Страница: 60 / 96

Universal Slave Driver 56
Set Generator Start Time
See the section “Generator Start Time” on
page 46 for configuration instructions.
Digital Clock Reference
The USD can use one of three possible dig-
ital clock references—AES/EBU, Super
Clock (256x), or Word Clock (1x).
See the section “Digital AES/EBU, Word
Clock and Super Clock” on page 33 for
complete configuration instructions.
Sample Rate/Frequency
Selecting this parameter name lets you
choose the USD’s sample rate.
The table below shows USD Sample Rate
indication with the four Sample Rate LEDs:
PAL format and Pull Up/Down
The USD Pull Up and Pull Down features
are not designed to perform conversion be-
tween 24 fps and 25 fps.
VITC Insertion
When selected, VITC will be inserted onto
the outgoing video signal—assuming that a
video signal is present at one of the USD
video inputs, and that the USD is in a valid
mode for inserting VITC.
To configure the USD to insert VITC using the
front panel:
1
Select VITC Insertion (VI7C InS) using
the Set, Down, and Up switches.
2
Press the Set switch again. The LED Time
Code Display will switch to display On or
Off.
USD LED displays and Sample Rates
USD LEDs ON Sample Rate
44.1 kHz 44.100 kHz
48 kHz 48 kHz
44.1 kHz and
PULL UP 44.144kHz
44.1 kHz and
PULL DOWN 44.056kHz
48 kHz and
PULL UP 48.048 kHZ
48 kHz and
PULL DOWN 47.952 kHz