DigiDesign SYNC HD, Manual

Page: 31 / 103

Chapter 3: SYNC HD Hardware and Software 25
Parameters and Values When configuring the
SYNC HD with the Set, Run/Stop and other pa-
rameter controls, the LED display shows param-
eter names, values, and other data.
Positional Reference Switch
This switch selects the positional reference
source, as indicated by the Positional Reference
LEDs. Choices include LTC, VITC, Auto Switch
Bi-phase, and Generate.
In Auto Switch LTC/VITC mode, both the LTC
and VITC LEDs light while the SYNC HD deter-
mines which source it will use. Either the LTC or
the VITC LED will remain lit to indicate the cho-
sen positional reference.
Frame Rate Switch
This switch selects the time code frame rate and
format (drop-frame or non drop-frame). The ac-
tive choice is displayed by the Frame Rate and
DF (drop frame) LEDs.
Frame Rate LEDs and DF Indicator
These display the current SYNC HD frame rate:
30, 29.97, 25, or 24 fps are indicated by four
green LEDs. The DF LED indicates drop-frame
(lit) or non drop-frame (unlit). The 24 fps LED
will blink to indicate 23.976 fps.
Status LEDs
These LEDs show the current state of the
SYNC HD in relation to clock references. Indica-
tors include:
Locked This LED lights solid green when the
SYNC HD is locked to the selected clock refer-
ence. The Locked LED flashes yellow if the se-
lected clock reference source is missing or out of
lockable frequency range.
Speed Cal (Speed Calibration) This LED lights to
indicate the status of the clock reference:
• Yellow Solid: SYNC HD is locked and that
the clock reference is within 0.025% of the
expected rate
• Yellow Flashing Fast: SYNC HD is locked,
but the clock reference is between 0.025%
and 4% faster than the expected rate
• Yellow Flashing Slow: SYNC HD is locked,
but the clock reference is between 0.025%
and 4% slower than the expected rate
• Red Flashing Fast: SYNC HD is locked, but
the clock reference is more than 4% faster
than the expected rate
• Red Flashing Slow: SYNC HD is locked, but
the clock reference is more than 4% slower
than the expected rate
• Unlit: SYNC HD is not locked to the chosen
clock reference
Remote Mode This green LED lights when the
SYNC HD is set to Remote-Only/Front Panel
Lockout mode. While this LED is lit, the front
panel switches will have no effect on the
SYNC HD.
For a table identifying each LED abbrevia-
tion and function, see “Parameters” on
page 59.
For more information, see “SYNC Setup Di-
alog Controls and Displays” on page 28.