User manual KORG I3 SERVICE MANUAL

[. . . ] If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following means: · Reorient or relocate the receiving antenna. · Increase the separation between the equipment and the receiver. · Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. If necessary, consult an experienced radio/television technician for additional suggestions. [. . . ] The same thing can happen when transferring audio data from an ADAT system to the 1212 I/O. As long as ADAT is select as Clock Source for the Korg 1212 I/O 21 System Configurations 1212 I/O, the audio will play back from the 1212 I/O at the exact same speed as the ADAT, and the duration of the audio will stay exactly the same. If you switch the Clock Source to Internal or S/PDIF, however, the duration of the audio will probably change very slightly. Over the course of a several minute song, this timing offset can become noticeable. In particular, if you are using a digital audio sequencer to play back audio tracks along with MIDI data, you may find that the two become out of sync. Similarly, if you are editing audio for video, you may notice the audio slipping against the video. This is a completely temporary effect; as soon as you switch the Clock Source back to ADAT, the audio will become synchronized again. To avoid this effect, keep the Clock Source set to ADAT when editing ADAT audio data along with MIDI tracks in a digital audio sequencer, or when editing audio synced to video. Even when the ADAT tape is not moving, the ADAT system will continue to send out its word clock, which will make sure that the durations of files played back on the 1212 I/O will exactly match their ADAT counterparts. English 22 Korg 1212 I/O 1212 I/O Utility 1212 I/O Utility In the MacOS, you can use the 1212 I/O Utility to set up the card for use with the Apple Sound Manager; in Windows 95, you can use it to set up the card for use as a wave device. You can also use the Utility as a stand-alone application for such tasks as transferring audio data between S/PDIF and ADAT formats, re-routing tracks in an ADAT system, and generating "digital black. " IMPORTANT: In the MacOS, settings made in the 1212 I/O Utility affect all software which uses the 1212 I/O through the Apple Sound Manager; in Windows 95, they affect all software which uses the card as a wave device. However, software which specifically supports the 1212 I/O will initialize these parameters for their own use. In general, it's best to leave the input pad set to 0dB, and attenuate only when necessary to avoid digital clipping. If you're using an external mixer, you may find it more convenient to reduce the output level of the mixer. Also, if you find yourself routinely attenuating by around -12dB, this may mean that the 1212 I/O is configured for -10 levels, while the rest of your system is operating at +4. For more details on setting the 1212 I/O's analog levels, please see "Analog levels: +4 or -10" on page 3. This allows you to attenuate the analog input sensitivity of the right channel, prior to the A/D conversion. It works just the same as the control for the left channel, as described above. English Sound Manager Routing (MacOS) The Apple Sound Manager offers two audio inputs and two audio outputs, each of which can be routed to (or from) any of the 1212 I/O's twelve input channels and outputs, respectively. For more information on setting up and using the Sound Manager, please see the section titled "Sound Manager (MacOS), " starting on page 39. If the 1212 I/O is not selected for use with Sound Manager (as described under "Sound Manager (MacOS), " starting on page 39), the Sound Manager Routing parameters will be inactive and grayed out. If the 1212 I/O is selected for input only, then the output parameters will be grayed out; if it is selected for output only, then the input parameters will be grayed out. If you have multiple 1212 I/O cards installed in your computer, select the same card for Sound Manager input and output. If the current card (as set in the 1212 I/O In PCI Slot parameter) is not assigned for use with the Sound Manager, the input and output parameters will be grayed out, as described above. [. . . ] Korg 1212 I/O 51 English Troubleshooting Card stops, audio squeals, or channels shift (Windows 95) The 1212 I/O card relies on being able to transfer small amounts of data across the PCI bus at regular intervals (roughly 12, 000 times per second). If other devices tie up the PCI bus for extended periods of time, this can prevent the 1212 I/O from completing a transfer before the next scheduled transfer. The audible effects of this corruption will be manifested in one of the following ways: a. For example, audio destined for the left analog output may instead appear on ADAT channel 7. [. . . ]