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User Guide 35ProFire 2626
Scenario 3: ProFire 2626 Slaved to S/PDIF Input
You may need to use a two-track device as clock master. This is because many two-track digital devices, such as
consumer CD players, are not designed to be locked to other devices due to their lack of digital inputs. Configure
ProFire 2626 to synchronize externally when receiving digital signal from such devices.
In Figure 3 below, the CD player is configured as the clock master, with ProFire 2626 and other devices configured as
slaves.
12V DC
MIDI
S/PDIF
Word Clock
In AOut A
753
8
7
654321
In BOut B
Optical Line Outputs
3.5A
+
—
Mic/Line Inputs
1
8642
MIDI
S/PDIF
Word Clock
In A
In B
Out A
Out B
S/PDIF
(RCA)
Slave
Master (CD Player) Slave (ADAT B)
Slave (ADAT A)
The previous three examples have covered some of the most common clocking methods and are intended to help you
understand the basic principles of digital clocking. Note that there are many other ways in which proper clocking can
be established between digital audio devices and this chapter cannot cover every conceivable scenario. If your studio
uses more advanced clocking devices such as a “house” master clock, please refer to that device’s user guide to learn
more about how it can be configured to work with ProFire 2626.