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SPX2000—Owner’s Manual 19
Operation
Here’s how to select either the signal from the [INPUT]
jacks ([) or the signal from the [AES/EBU IN] jack (X)
as the input source.
1 Select the “INPUT SOURCE” function
Press the [UTILITY] button (L) several times to select
“INPUT SOURCE.”
2 Select the input source
Press the [▲ INC] button (G) to select DIGITAL
([AES/EBU IN] jack), or press the [▼ DEC] button
(G) to select ANALOG ([INPUT] jacks).
→ The [INPUT SOURCE] indicator (5) indicates your
selection.
To prevent undesired changes from being made acciden-
tally, you can selectively disable certain operations.
1 Select the “OPERATION LOCK” function
Press the [UTILITY] button (L) several times to select
“OPERATION LOCK.”
2 Select the operation lock level
Use the [▲ INC]/[▼ DEC] buttons (G) to select the
operation lock level.
About word clock
The signal used to synchronize digital audio signal
processing is called “word clock.”
When two or more digital devices are connected in
order to send and receive digital audio signals, each
digital device must process the signal at the same
timing. Even if all connected devices are set to the
same clock frequency, the signals will not be trans-
mitted and received correctly if the processing tim-
ing does not match, or you may hear noise.
In order for digital audio signals to be synchro-
nized, one digital device must transmit the clock
(synchronization data), and the other devices must
be set to receive this clock. In such a setup, the
device that supplies the synchronization reference
clock is called the “CLOCK MASTER,” and the
receiving devices are called “CLOCK SLAVES.”
To use the SPX2000 as the clock master, set the
“CLOCK SOURCE” function (page 18) to either
INT96kHz, INT88.2kHz, INT48kHz, or INT44.1.
To use the SPX2000 as a clock slave, use either of
the following two methods.
1 Set the “CLOCK SOURCE” function
(page 18) to AES/EBU, and connect the
AES/EBU format compatible device supply-
ing the clock data to the [AES/EBU IN] jack
(X).
2 Set the “CLOCK SOURCE” function
(page 18) to WORD CLOCK, and connect
the device supplying the clock to the
[WORD CLOCK IN] jack (V). When doing
so, the device supplying the clock must be
connected one-to-one with the SPX2000.
Selecting the input source
NOTE: If the display indicates “Sync Error!” or if the DIGITAL
[INPUT SOURCE] indicator blinks, the incoming digital input
signal does not match the clock on which the SPX2000 is
operating.
Tr y changing the setting of the device that is supplying the word
clock.
Restricting operation of the
SPX2000
INPUT SOURCE
*ANALOG DIGITAL
INPUT SOURCE
*ANALOG DIGITAL
OPERATION LOCK
*OFF 1 2 3
OPERATION LOCK
*OFF 1 2 3