Yamaha 02R Owner's Manual - Page 264
Word Clock Select, The 02R always - power supply
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154 Digital I/O, Setup, and Utilities Word Clock Select 1. Press the [DIGITAL I/O] button. The Digital Recording Console 02R processes audio data at 44.1 kHz or 48 kHz using its internal clock, and can run at any frequency from 32 kHz -6% to 48 kHz +6% when an external wordclock is applied. DIGITAL I/O Wordclock A DIGITAL I/O display function appears. The "Word Clock Select" screen is the first of many screens in this function. Note: The 02R always recalls the last function visited (and the screen of that function) even after you turn the power off and back on again. You may have to press the [DIGITAL I/O] button repeatedly to get to the "Word Clock Select" screen. 2. Use the CURSOR buttons to select a wordclock source and press the [ENTER] button. When you connect a number of digital audio devices together, all the devices should synchronize to one device - the wordclock master. The wordclock master generates a sync pulse which allows the other devices connected to it to determine where the start of each digital word is. Although most digital interconnect protocols are self-clocking, it is more reliable to use a dedicated line for your wordclock signal. This is especially important in a multitrack environment where up to eight channels of digital data may be multiplexed on one cable. When you are using a digital device - such as a DAT mastering recorder or a modular digital multitrack recorder - connected to the 02R, all the digital devices in the system, including the 02R, should synchronize the wordclock being supplied by one master device. If any device does not synchronize to the system wordclock, dropout and/or other noise may occur. In Section 13, "Installing Options" on page 171 of the User's Guide, there are examples of connecting external digital devices to the 02R and setting the appropriate wordclock selection. Refer to this section for details for each of the optional digital I/O cards. Note: Wordclock is not required if you use the analog I/O card (CD8-AD) to connect to an analog multitrack recorder. Display Screen Shown below is the first DIGITAL I/O display function - the Word Clock Select screen: Digital Recording Console 02R User's Guide