Specifications

Chapter 3: SYNC I/O Hardware and Software 25
Parameters and Values When configuring
SYNC I/O 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 SYNC I/O 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 I/O 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 SYNC I/O
in relation to clock references. Indicators in-
clude:
Locked This green LED lights solid when
SYNC I/O is locked to the selected clock refer-
ence. LOCKED flashes if the selected clock refer-
ence source is missing or out of lockable fre-
quency range.
Speed Cal (Speed Calibration) This yellow LED
indicates when all output clocks are at a fre-
quency that corresponds with the chosen sam-
ple rate. The Speed Cal LED flashes whenever
there is a mismatch between the chosen sample
rate and the actual output sample rate. Speed
Cal compares actual output sample rate to de-
sired sample rate.
The Speed Cal LED does not reflect the speed of
motion of the chosen Positional Reference.
However, it would bear a relationship to the Po-
sitional Reference if both Positional Reference
and Clock Reference were set to LTC.
Remote Mode This green LED lights when
SYNC I/O 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 I/O.
For a table identifying each LED abbrevia-
tion and function, see “Parameters” on
page 57.
For more information, see “SYNC Setup
Window Controls and Displays” on
page 28.
Remote-only/Front Panel lockout is not the
same as Remote 9-pin Deck Emulation
mode.