DigiDesign SYNC HD Manual page 53

Bi-Phase/Tach Starting Frame
In order to use the Bi-Phase/Tach signal as a po-
sitional reference, the SYNC peripheral also
needs to know the time code address for a par-
ticular frame of film. This positional relation-
ship is established by parking the film device at
a particular frame and setting the SYNC periph-
eral to the equivalent time code value using the
Bi-Phase/Tach Starting Frame parameter.
To set the Bi-Phase/Tach start frame:
From Pro Tools:
In Pro Tools, place the playback cursor at the
1
desired time code location.
Choose Setup > Peripherals and click Synchro-
2
nization.
Click the Reset Bi-Phase button.
3
The Time Code Display on the SYNC peripheral
updates to match the session time code value.
From the front panel:
Press Set, and use the Up and Down switches
1
to display Set Gen ("SE7 6En").
Press Set to display time code numbers. One of
2
the time code fields (hours:minutes:sec-
onds:frames) flashes.
Press the Up or Down switches to scroll
3
through the parameter values.
To set a time code setting and advance to the
4
next field, press and release the Down and Up
switches simultaneously.
Repeat until you have finished setting the
5
SYNC peripheral to the desired generator start
time.
Press Set.
6
The LED Time Code Display stops flashing and
displays the start time.
From the SYNC Setup software utility
(Windows only):
In the SYNC Setup Generator/Bi-Phase Preset
1
section, enter the time code value of the starting
frame, in hours:minutes:seconds:frames.
Click Set.
2
Bi-Phase/Tach Signal
The Bi-Phase/Tach signal can be set to any of the
following:
Bi-Phase: FWD = A leads B When the A square
wave is ahead of the B square wave, the direc-
tion of the Bi-Phase signal is "Forward."
FWD = B leads A When the B square wave is
ahead of the A square wave, the direction of the
Bi-Phase signal is "Forward."
Tach: FWD = B is Low When the B signal is in a
"low" state, the rate and direction ("r–n–d") of
the Tach signal is "Forward."
Tach: FWD = B is High When the B signal is in a
"high" state, the rate and direction ("r–n–d") of
the Tach signal is "Forward."
To define the direction for a Bi-Phase/Tach input
signal:
From Pro Tools:
Choose Setup > Peripherals and click Syn-
1
choronization.
Choose one of the following settings from the
2
Bi-Phase/Tach Wiring pop-up menu:
• Bi-Phase: FWD = A leads B
• Bi-Phase: FWD = B leads A
• Tach: FWD = B is Low
• Tach: FWD = B is High
Click OK.
3
Chapter 4: Using SYNC Peripherals 47