Specifications

SYNC I/O Guide26
SYNC I/O Back Panel
Bi-Phase/Tach/GPI/Pilot
This is an accessory port for Bi-Phase, Tach, and
Pilot signals (specific cables are required for dif-
ferent applications). This connector is also used
for GPI input, output (including Fader Start),
and thru signals. This port handles up to 12
volts Bi-phase.
Video Reference In/Out
Video Ref In Receives a signal from an
NTSC/PAL video source, such as a black burst
(house sync) generator or a standard video sig-
nal, for clock reference and window burn pur-
poses. This port is configured as an un-termi-
nated loop-through. When you connect a signal
to this port, you must do one of the following:
• Connect a 75-ohm BNC terminator (included
with SYNC I/O) to the Video Reference Out
on the back panel
– or –
• Make sure another terminated video device is
fed from the Video Reference Out connector.
Video Reference Out A parallel, unbuffered con-
nection output for any video source connected
to the Video Reference In port. This port allows
black burst or other video reference to be passed
to another device, and continues to output
whatever signal is present at the Video Refer-
ence In port, whether SYNC I/O is on or off.
Host Serial Port
The Host Serial port is a bidirectional (in/out)
port to connect SYNC I/O to the DigiSerial Port
on a Pro Tools Core card. When not being used
with Pro Tools, the SYNC I/O Host Serial port
can be connected to a standard serial port on a
supported computer to run the SYNC I/O Setup
software utility (Windows only).
Figure 2. SYNC I/O Back Panel
MTC OUT
HOST SERIAL
AC 100-240V, 50-60HZ, .5A 30W
VIDEO REF
9-PIN OUT 2
9-PIN OUT 1
WORD CLOCK (1x,256x)
VIDEO
L
T
C
I
N
A
E
S
I
N
A
E
S
O
U
T
L
T
C
O
U
T
IN
OUT
IN
OUT
IN
OUT
LOOP SYNC
INTERNALLY
TERMINATED
BI-PHASE / TACH / GPI / PILOT
SERIAL NUMBER
964530300294856
Video Ref
Bi-Phase/Tach
Video Word Clock
AC PowerHost Serial
GPI/Pilot
In/Out
Loop Sync
LTC In/Out AES In/Out
In/Out
MTC Out 9-Pin Out 1
In/Out
9-Pin Out 2
In/Out
Refer to Appendix C, “Wiring Diagrams
and Pin Assignments” for wiring informa-
tion and other specifications for this port.
If SYNC I/O is the last device in the video
sync chain, a 75-ohm BNC terminator
must be attached to this connector.