MACKIE HDR24
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The following are recommended setups for establishing proper sample clock synchronization with the devices connected to the HDR24/96 digital I/O cards.

TDIF (DIO�8)
With the HDR24/96 as a master, connect Word Clock Out of the HDR24/96 to Word Clock In on the receiving device(s). If connecting to older TASCAM DTRS recorders, use the Sync Out port on the first DIO�8 card instead of Word Clock Out. If there is more than one DTRS recorder in the chain, connect Sync Out to the word clock input of the first DTRS recorder only; the other recorders are synchronized through their interconnecting DTRS cables. With the HDR24/96 operating as a slave to another TDIF device, connect the word clock output from the master TDIF device to Word Clock In on the HDR24/96.

ADAT Optical (DIO�8, OPT�8)
With the HDR24/96 as a master, set the receiving device(s) to derive sample clock from their ADAT Optical ports if the ports are self-clocking. In this case, no word clock connection is necessary. If the ADAT Optical ports on the receiving devices are not self-clocking, connect Word Clock Out of the HDR24/96 to Word Clock In on the receiving device(s). With the HDR24/96 configured as a slave, connect the word clock out of the master ADAT Optical device to Word Clock In on the HDR24/96.

AES/EBU (PDI�8)
With the HDR24/96 as a master, set the receiving device(s) to derive their sample clock from the AES/EBU ports if the ports are self-clocking. In this instance, no word clock connection is necessary. If the AES/EBU ports on the receiving device(s) are not self-clocking, connect Word Clock Out of the HDR24/96 to Word Clock In of the receiving device(s). With the HDR24/96 as a slave, connect the word clock out of the master AES/EBU device to Word Clock In on the HDR24/96.

Note: Use 75 � coaxial cables when connecting word clock or video to the Sync Card Word Clock/Video input jack. If the HDR24/96 is at the end of a cable that�s connected to several devices, push the Termination Switch in; otherwise leave it out and use a BNC Tee adapter to feed the signal on to the next device in the chain.

Word Clock to other Slaves Termination Switch Word clock input jack BNC-Tee adaptor

Quick Start Guide

SYNC

Word Clock From Master

Note: If you are using an HDR24/96 with the Mackie Digital 8�Bus console, you may need to turn on the Digital 8�Bus first. The Clock I/O on the D8B prefers not to see an active signal at its Word Clock input when it powers up.
Quick Start Guide

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