You must still select the SDR24/96’s Sample Rate even if it’s slaved to another device’s clock. If you don’t set it correctly, the SDR24/96 time display will run at the wrong rate, even though audio will play at the right speed.
Synchronization |
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The Sync Options menu (under SETUP) allows you to select the sample clock | ||||
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and sample size. Sample clock source, time code source, LTC output, and MTC |
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output are global settings, and are project independent. Sample rate, frame rate, |
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and sample size are saved in the project file. |
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Sample Clock | SETUP MENU | > |
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The Sample Clock setting | Record I/O | Sync Transp | Guide |
(SETUP:Sync:SClk) determines the
source of the SDR24/96 sample clock. If the SDR24/96 is a clock master or is not
connected to any other digital device(s), set it to Internal. If the SDR24/96 is a word clock slave, set it to Word Clock. If the SDR24/96 is a slave to a device
connected to one of the digital optical inputs, set it to either ADAT A, ADAT B, or ADAT C, depending on which digital port the master device is connected to.
Sample Rate
The Sample Rate (SETUP:Sync:SRate) determines how fast the SDR24/96 sample clock runs. Compact Discs use a 44.1 kHz sample rate, while some
DVD disks use 96 kHz. The video production folks prefer 48 kHz because their digital video recorders use 48 kHz. When 44.1 kHz or 48 kHz is selected, all 24 tracks are available at both the analog and digital inputs and outputs. When 88.2 kHz or 96 kHz is selected, only 12 tracks are available at the digital inputs and outputs. The selected sample rate appears in the status display. If 88.2 kHz or 96 kHz is selected, the X2 LED lights. Use the same sample rate throughout a project.
Time Code Chase |
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code source. In Play mode, the PLAY LED blinks until the SDR begins |
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receiving valid time code. When valid time code is detected, the PLAY LED |
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lights steadily, the transport jumps to the time code position being received, |
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and playback begins at that point. |
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Time Code Source |
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The SDR24/96 can chase time code |
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from either MIDI IN or SMPTE IN. Use |
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Time Code Source (SETUP:Sync:TcSrc) to select either |
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MTC (MIDI Time Code) is read at the MIDI IN connector, and LTC |
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(Longitudinal Time Code) is read at the SMPTE IN connector. |
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With Chase selected, the transport locks to the incoming time code and the |
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sample rate is adjusted to stay synchronized to the time code. The SDR24/96 |
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must use its internal clock in Chase mode. A good application for using Chase |
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mode is when slaving to an analog tape. If there is wow and flutter from the |
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tape, Chase mode is |
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With Jam Contin (Jam Continuous) selected, once the transport locks to the |
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incoming time code, the transport is governed by the the word clock speed. It is |
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assumed that all devices are synchronized to the same master clock. If not, the |
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time code can drift between devices. Use Jam Continuous mode when the |
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devices are synchronized to the same master clock. |
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| Operation Guide |
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