Basic connections and settings

Synchronizing to the word clock input

Word clock and sampling frequency

An analog audio signal is converted into a digital audio signal by sampling the level of the analog signal at extremely small increments of time, and converting this level into digital data. The sampling frequency is the number of times this AD (analog to digital) conversion is performed each second. Higher sampling frequencies allow better audio quality, but will also increase the amount of data.

In order for two or more devices to accurately process a digital audio signal, all of the devices must be operating at the identical sampling frequency. This can be ensured by sending a word clock signal to the devices. In order for two or more devices to be synchronized, they must be in the appropriate Word Clock Master and Word Clock Slave relationship.

Using the UA-1000 as the master

In the setup shown here, the UA-1000 is the master, and the external device (e.g., hard disk recorder) is the slave.

fig.synchro-master

Hard disk recorder, etc.

WORD CLOCK

OUT

 

 

 

 

Set the sampling frequency

 

 

 

 

 

 

 

OFF

 

 

 

 

Match the sampling frequency

 

 

 

 

 

 

(unlit)

 

 

 

 

 

 

 

of the hard disk recorder

 

 

 

 

 

 

 

 

 

●Connections

Connect the WORD CLOCK OUT jack to your hard disk recorder.

●Sampling frequency select switch

Set this to the same sampling frequency as selected on your hard disk recorder and recording software.

●External clock switch

Turn this off (unlit) so that the external device will synchronize to the digital signal output from the UA-1000 (i.e., the UA-1000 will be the master).

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