Avid Technology Digidesign USD User Manual page 63

LTC Output Level/Gain
Adjusts the audio level of the USD's LTC
output, from –24 dBu to +9 dBu.
See "Example 1: Using Set, Down and Up to
adjust LTC Gain" on page 30 for step-by-
step LTC gain instructions.
To set the LTC output level:
Select LTC Gain (L7C 6AIn), using the
1
Set, Down, and Up switches.
Press the Set switch again. The LED Time
2
Code Display will switch to display one of
the parameter values (shown in USD LED
as "dbu," referring to actual dBu levels):
9 dbu
6 dbu
3 dbu
0 dbu
–3 dbu
–6 dbu
–9 dbu
–12 dbu
–15 dbu
–18 dbu
–21 dbu
–24 dbu
Use the Down and Up switches to switch
3
between the parameter values.
When you have chosen your desired op-
4
tion, press Set. The LED Time Code Display
will return to showing time code numbers.
The USD will retain the setting, even when
the unit is powered off and on again, until
changed.
Pitch Memory/Hold
Pitch Memory is useful when resolving
USD to off-speed, free-running LTC. When
Pitch Memory is enabled, the USD will re-
main at a pitch (sample rate) that corre-
sponds to the last known clock reference
speed. Without Pitch Memory/Hold, USD
reverts to the selected sample rate.
Turn off Pitch Memory if you want to digitally
transfer to another device and to ensure the
receiving device gets the correct sample rate.
Also, turn pitch memory off if you are doing an
analog transfer to Pro Tools and want to en-
sure that the recording is made at the exact
sample rate set by the session set up window.
To enable or disable the USD's pitch memory
feature:
Select Pitch Hold (PICH HLd), using the
1
Set, Down, and Up switches.
Press the Set switch again. The LED Time
2
Code Display will switch to display one of
the two parameter values:
On (On)
Off (OFF).
Use the Down and Up switches to switch
3
between the parameter values.
When you have chosen your desired op-
4
tion, press Set. The LED Time Code Display
will return to showing time code numbers.
The USD will retain the setting, even when
the unit is powered off and on again, until
it is changed.
Chapter 5: Additional Operational Information 59