Aviom AllFrame - Manual (Page 82)

70 C4
dio
d
igiTal
i/o C
ard
f
eaTures
ALL FRAME
™
Multi-Modular I/O System
C4dio External Clock Options
The C4dio allows external clock sync sources to be used with the AllFrame and the Pro64 network. Two clock
types are supported—Word Clock and the clock signal embedded within an AES3 digital stream.
The C4dio offers Word Clock and AES3 clock sync options.
Word Clock
A locking BNC bayonet style connector with a three-position switch is provided to support Word Clock. The
three-position Word Clock switch is labeled T, I, and O, corresponding to the following:
t • — The BNC jack operates as a Word Clock input with termination.
i • — The BNC jack is a Word Clock input, without termination
O • — The BNC jack provides a Word Clock out at the current Pro64 network sample rate
Word Clock cables connected to the C4dio should use coax cable with a 75 ohm impedance. Typically, the last
device in a clock distribution chain uses termination.
To Sync to Word Clock
To use an external Word Clock source with the network:
Make the AllFrame the network’s 1. Control Master.
On the AllFrame F6, set the Word Clock switch on the front of the C4dio card to the 2. t or i
position as appropriate for the application. Use the Terminated setting if the AllFrame is
the last device in a clock chain.
Connect the external clock source to the
3. w
OrD
C
lOCk
jack on the C4dio card using a
properly configured locking BNC cable.
Open Pro64 Network Manager and connect to the network online.
4.
In the 5. AllFrame Device Window, choose the C4dio where the external clock is connected
from the drop-down menu labeled A
uDiO
C
lOCk
s
OurCe
in the Overview. (Card locations
are denoted with letters and clock type, e.g. Word :C)
The green LED on the C4dio card next to the BNC
6. Word Clock jack lights solid to indicate
that the external clock is in use.
On screen, a red dot is added to the
7. I/O Cards list found in the Overview in the AllFrame’s
Device Window indicating that the card is set as the clock source.