Yamaha D24 Owner's Manual - Page 126
Wordclock Connections, Dual AES/EBU Mode
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Wordclock Connections 123 exactly half that of the sampling rate, and each AES/EBU format digital I/O signal is split in two, requiring two transmission channels. See "Dual AES/EBU Mode" on page 123 for more information. In a system where all devices share a common wordclock, it's important that all devices be turned on even if they're not being used. Turn on the wordclock master device first, and then the slave devices. When shutting down the system, turn off the slaves first, and then the master. Before recording, make sure that the wordclock slave devices are correctly locked to the master device. Most devices have front panel indicators, similar to the LOCK indicator on the D24, to show when they are wordclock synchronized. Refer to the relevant owner's manuals for more information. When the wordclock source or recording resolution is changed, or a project with a different sampling rate or recording resolution is selected, lower the volume of your monitoring system just in case your digital mixer, or another device locked to the D24's wordclock, becomes unlocked and produces unpleasant noises. Wordclock Connections When the wordclock source is set to WC IN or WC IN DUAL, the D24 locks to the wordclock signal received at the WORD CLOCK INPUT connector. The WORD CLOCK OUTPUT connector transmits the wordclock signal received at the WORD CLOCK INPUT when the WORD CLOCK 75Ω TERM/THRU switch is set to THRU, or the internally generated wordclock signal when it's set to TERM. The WORD CLOCK 75Ω TERM/THRU switch is used to terminate the wordclock signal connected to the WORD CLOCK INPUT connector. See "Terminating BNC Wordclock Distribution" on page 131 for hookup examples. WORD CLOCK OUTPUT INPUT 75 TERM THRU An external wordclock can also be sourced from SLOT 1, SLOT 2, REMOTE IN, or COAXIAL IN. Dual AES/EBU Mode When using the higher sampling rates of 88.2 kHz and 96 kHz, the number of tracks is reduced from eight to four and the available tracks are 1, 3, 5, and 7. Project, track, and part editing functions are not available in this mode. For digital I/O, the D24 uses what's known as Dual AES/EBU mode, in which the wordclock frequency is exactly half that of the sampling rate, and each AES/EBU format digital I/O signal is split in two, requiring two transmission channels. Normally, two AES/EBU format signals, for example, left and right channels of a stereo signal, can be transmitted by a single balanced connection. In Dual AES/EBU mode, however, only one AES/EBU format signal can be transmitted per connection. See "Using Dual AES/EBU Mode" on page 186 for more information. Analog I/O is not possible when a Dual mode wordclock source is selected. D24-Owner's Manual