Mackie MDR24/96 Operation Guide - Page 19

Operation Guide Note: The PDI·8 is the only Mackie I/O card that currently supports 88.2 or 96 kHz operation. Do not operate the MDR24/96 at these Sample Rates with AIO·8, DIO·8, or OPT·8 cards installed. Synchronization Synchronization Options Sample Clock The Sample Clock setting determines the source of the MDR24/96 sample clock. If the MDR24/96 is a clock master or is not connected to any other digital device(s), set it to Internal. If the MDR24/96 is a word clock slave, set it to Word Clock. SYNC SYNC OPTIONS [1]-> Sample Time Code Clock Rate Source Rate When Video is selected as the clock source, an additional parameter, the video frame rate is required. This is actually set as the Video Field Rate (twice as fast). Video Field magically appends itself to the list of Sync Options in the LCD display. However, you'll have to hunt it down as there are normally 3 pages of Sync Options and Video Field appears on a new page 4. Video Field Rate options are B&W (60Hz), NTSC (59.94 Hz), and PAL (50 Hz). If you're doing post in the U.S. then choose NTSC, and if you're doing post (or music) in Europe then choose PAL. If you're doing music in the U.S. and you're just using a black burst generator to keep the clocking universal and solid for the studio, then set the field rate as well as the BB Generator to use 60 Hz. The integral number of frames per second will make you much happier than NTSC ever will. The 60 Hz setting can also be used in HDTV production, where many permutations of frame rate and raster lines are available. Sample Rate The Sample Rate determines how fast the MDR24/96 sample clock runs. Compact SYNC OPTIONS [1]-> discs use a 44.1 kHz sample rate, while some DVD disks use 96 kHz. The video production folks prefer 48 kHz because Sample Time Code Clock Rate Source Rate their digital video recorders use 48 kHz. Even though the MDR24/96 supports four Sample Rates, you can only choose between two at any given time. The range of available rates is determined by the current Project's Sample Rate mode. The Sample Rate mode determines whether a Project will be a 24-track 44.1 kHz or 48 kHz Project, or a 12-track 88.2 kHz or 96 kHz Project. To change the Sample Rate to a setting that is not available, first create or open a Project with the desired Sample Rate mode. Bit-Depth The Bit Depth setting determines how many bits are contained in each audio