Some word clock generators feature multiple BNC word clock outputs. If the device at the end of your word clock chain does not terminate internally (self terminate), you must connect a 75-ohm BNC Terminator (resistor) to the word clock output of this device.Īlternatively, you could take a device that is capable of terminating word clock internally and placing it at the end of the sync chain. Please refer to your Device's documentation for details on its word clock termination ability. Some devices do this automatically, and some may have a setting or switch that needs to be enabled. Many devices are capable of terminating word clock internally (self termination) at the word clock input circuit (such as the ProFire Lightbridge).
#DIGITAL AUDIO WORD CLOCK GENERATOR#
In the picture above, the word clock chain beings with the word clock generator (Master) and ends with the ProFire Lightbridge. In the picture below, a word clock generator is configured as clock master, with ProFire Lightbridge and other devices (digital multitracks) configured as slaves in a 'daisy chain' configuration. If the other digital devices in your system do not have digital inputs to receive the word clock signal, BNC word clock can be used as an alternative. In order for the slaves devices to receive the word clock signal from the word clock generator in this example, you must connect cables from the ProFire Lightbridge's digital digital outputs to the digital inputs of every slave device. In the picture below, ProFire Lightbridge is slaved to a master clock generator, with additional devices slaved to the same master clock through ProFire Lightbridge. In this case, ProFire Lightbridge can be slaved to the word clock generator's BNC output, with other devices configured as slaves and receiving their word clock distribution via ProFire Lightbridge. In many larger digital setups, a master word clock generator is employed to provide an accurate timing reference to the entire setup. It is crucial to set up word clock correctly because without precise synchronization between your digital devices, your digital audio signal will be filled with clicks and pops, (if, in fact, it plays at all). Word clock is an important part of digital studios but is often overlooked by engineers new to digital recording. For example, if the master is running at 44.1kHz, no other device can be set to 48kHz.
All devices must be running at the same sample rate as well. Only one device in the chain can be the master, and all other devices must slave to that master. This synchronization is achieved by designating one device as the timing “master,” and all other connected devices as “slaves,” locking the slaves to the master. Each device in your interconnected digital world must share the same timing in order to communicate correctly-that is, their clocks must be synchronized. Precise, accurate timing in sending and receiving those words is critical.
#DIGITAL AUDIO WORD CLOCK SERIES#
Think of this data stream as a sentence, made up of a series of words of identical length. These snapshots are all the same size-16- or 24-bit, depending on your selected resolution-with a beginning and an end, and are sent one after the other as a stream of data. Those samples are sent to and from your DAW as “snapshots” of data. Your computer-based DAW stores and manipulates music as digital samples. This guide will give you a brief overview of synchronizing your ProFire Lightbridge using the BNC Word Clock input. Sync setup with ProFire Lightbridge slaved to Word Clock BNC Input
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