Zoom U-44 Operation Manual page 20

Inputting an S/PDIF signal
1.
Switch
the input you want to use.
2.
Connect the S/PDIF device to the S/PDIF IN jack set in step 1.
NOTE
3.
Confirm synchronization has occurred by
checking that the SYNC indicator is lit.
NOTE
synchronization with the digital audio device is not possible. In this case, the
to OPTICAL or COAXIAL to select
(input)
S/PDIF IN jack
S/PDIF device
(output)
and the connected device must have the same sampling rate settings.
(continued)
S/PDIF IN jack
S/PDIF OUT jack
20
will operate using its internal clock.