ESI EX8000 - Manual (Page 12)

MaXiO XD EX8000
3.3 System Clock
The following diagram gives you an overview of the different available clock sources of EX8000.
INTERNAL
192.0kHz
176.4kHz
96.0kHz
88.2kHz
48.0kHz
44.1kHz
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3.3.1 System Clock Source
When multiple digital audio devices are connected to each other, they must all use the same system
clock to work properly. This means that EX8000 needs to be synchronised to all digital devices
connected to it. Drop outs, clicks or noise could result from wrong settings. As EX8000 has a huge
number of I/O connection possibilities, there are also a number of different options to set the correct
system clock for EX8000 in every specific setup. Please read this chapter carefully as it provides
the most important basics to allow you to setup EX8000 in your studio environment.
EX8000 can provide its own internal system clock, it can synchronise to an external (Word Clock)
source, to another digital source (ADAT, AES/EBU or S/PDIF) or to the MaXiO PCI host card
(E.D.I connection).
When EX8000 is connected to the MaXiO PCI host card, the clock and sample rate is determined
by the Control Panel software of the MaXiO PCI host card. EX8000 is capable of automatically
detecting a clock source in the range between 44.1 kHz and 192 kHz (+/- 3%). The detected clock
and clock source will be displayed on the front panel (
). If the clock source indicator LED ( ) is
red, the clock cannot be used / detected.
In standalone mode, EX8000 can provide its own internal clock and the clock can be supplied from
an external source. With the first clock selection button (
) you can choose between INTERNAL,
DIGITAL IN and EXTERNAL by simply pushing the button one or several times.
· Never connect / disconnect the connection that provides the clock source while EX8000 is
turned on.
· Before making changes to the system clock, always check the full system; e.g. make sure that all
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EXTERNAL
256FS
FS 44.1 ~ 192kHz
DIGITAL IN
ADAT In
Digital In 4
Digital In 3
Digital In 2
Digital In 1
E.D.I Clock
INTERNAL
EXTERNAL
DIGITAL
E.D.I
Clock Source Select
Clock Freq. / Sub Clock
From PCI Host Card Clock
44.1 ~ 192 kHz
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CAUTION