Solid State Logic LINK MADI HD manual Synchronization Pro Tools HD card, Delta-LinkMADI HD

4. Synchronization Pro Tools® HD card

The Pro Tools® HD card is designed to operate as a Clock Slave, locking to a clock reference signal provided by the audio unit connected to its prim ary port. The interface unit can define the sa mple rate internally, or can itself be sy nchronized to an external reference signal (e.g. WordClock).

Whenever the user selects a sample rate setting in the PC or Macsoftware, the corresponding command is sent to the interface unit.

Delta-Link MADI HD

The Delta-Lin k MADI H D, l ike the P ro Tools ® HD card, is d esigned to operate as a Clock Slave. Once the c ard and Delta-Link MADI HD are connected together, they canbe seen as aunit requiring an external clock reference signal. However, this unit now has MADI ports, instead of the “Digital and Analogue” connections to other devices provided by Pro Tools® interfaces.

Although a reference signal is embedded in the Primary port, the MADI connection requires a separ ate WordClock signal. Therefore, the Delta-Link MADI HD is equipped with a WordClock input connector.

Depending on the type of unit that is connected to the MADI port, the sample rate will no longer change automatically when a setting is selected in the PC or Mac software (because there is no command channel). Therefore, the sample rate must be set manually at both ends (in the Pro Tools® software and on the hardware connected to the MADI port).

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