1817
Slave Clock Operation - EXTERNAL
You may have a studio master clock source
such that all digital devices synchronise to
your session sample rate, or perhaps you
would like the ASP800 to follow your DAW/
recorder session sample rate so that you do
not have to reconfigure the unit when you flip
between sessions at different sample rates.
In order to do this, you must set the ASP800
digital card to SLAVE to an external clock
source.
Press the SAMPLE RATE switch (1) until
it is flashing green (external clock mode).
Ensure that your master clock source is
connected via a 75Ω coaxial BNC cable to
the Word Clock input on ASP800 (3) - with
a valid clock signal present here, the green
LED in the SAMPLE RATE switch should
become solidly lit, indicating external lock.
If ASP800 is the only or last device in the clock
chain fed from the master clock, go ahead
andpressthe75Ωterminationswitch(2)to
ensure that the clock line is loaded properly
to stop any transmission line effects.
If using a BNC T-Bar to distribute clock
signals to various devices - please ensure the
lastdeviceinthechainisterminated(75Ω).
CONNECT DIGITAL OUTPUT (ADAT)
TO YOUR DAW/RECORDER
MASTER CLOCK SOURCE
BNC OUTPUT to ASP800
WORD CLOCK INPUT
2.
3.
75ΩCOAXCABLE
Clocking with the ASP800
There are two ways to integrate ASP800
into your system digitally:
• As a MASTER clock source - internal clock
• As a SLAVE device - external clock
Master Clock Operation (INTERNAL)
Assuming that you are connecting the
ASP800 digital output to a DAW/recording
interface with ADAT inputs, the ASP800 can
be set as MASTER clock source as follows:
Select the appropriate sample rate on the
front of ASP800 by pressing the SAMPLE
RATE switch (1). The selected internal clock
sample rate will be displayed by the YELLOW
LEDS - 44.1, 48, 88.2 or 96kHz.
Ensure that your DAW /
recorder session is set to the
same sample rate and that the
clock source is set to external
digital ADAT input to allow your
downstream device to receive
master clock from ASP800s
ADAT output..Your DAW /
recorder should automatically
follow the sample rate set on
the front of the ASP800.
SETUP || CLOCKING
1.
CONNECT DIGITAL ADAT OUTPUT
TO YOUR INTERFACE/RECORDER
1.
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