Specifications

SYNC HD Guide40
Adjusting LTC Output Level/Gain
To adjust LTC output level/gain from Pro Tools:
1 Choose Setup > Peripherals and click Synchro-
nization
.
2 Choose a value from the LTC Output Level pop-
up menu.
3 Click OK.
To adjust LTC output level/gain using the front
panel controls:
1 Press Set, and use the Up and Down switches to
display one of the following:
• SYNC HD: LTC Level (“L7C LEUL”)
– or –
• SYNC I/O: LTC Gain (“L7C GAIn”)
2 Press Set.
3 Press the Up or Down switches to scroll
through the available values (in 3 dBu steps).
4 Press Set.
Pilot Tone
SYNC peripherals can resolve to an external Pi-
lot Tone signal for clock reference, for synchro-
nizing to (or transferring audio from) certain
types of open-reel audio tape recorders. Pilot
Tone is basically a 60 Hz (NTSC) or 50 Hz (PAL)
sine wave tone. Pilot Tone is used on location
film shoots to establish a common sync refer-
ence between a film or video camera with a por-
table 1/4-inch analog ATR. Pilot Tone contains
no positional information; it provides only clock
reference.
The SYNC peripheral decides whether to use
60 Hz or 50 Hz as the pilot tone reference fre-
quency according to the setting of the Video
Format. When set to PAL, the pilot tone fre-
quency is assumed to be 50 Hz. When set to
NTSC, 60 Hz is assumed.
Connect the Pilot Tone reference source to the
SYNC peripheral Bi-Phase/Tach/GPI/Pilot port.
To resolve the SYNC peripheral to Pilot Tone using
Pro Tools:
 In the SYNC Setup section of the Session
Setup window, select
Pilot Tone from the Clock
Reference
pop-up menu.
To resolve the SYNC peripheral to Pilot Tone using
the front panel controls:
 Press the Clock Reference switch to select
Pilot.
To resolve the SYNC peripheral to Pilot Tone using
the SYNC Setup software utility (Windows only):
 Select Pilot Tone from the Clock Ref pop-up
menu.
For further information on LTC signals, see
“LTC Signals” on page 72.
For additional Pilot Tone information, see
“Pilot Tone” on page 75.