User manual KORG 1212I-O

[. . . ] Fully Integrated Digital Recording Systems 1212 I/O PCI MULTI-CHANNEL AUDIO INTERFACE English Owner's Manual The FCC Regulation Warning English This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules and CISPR pursuant to subchapter EN 55022 of the EMC Directive. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. [. . . ] The 1212 I/O Utility displays parameters for one card at a time; this selects which of the Cards you are currently viewing, identified by the PCI slot in which the card is installed. 1212 I/O Card (Windows 95) You can install multiple 1212 I/O cards in a single computer. The 1212 I/O Utility displays parameters for one card at a time; this selects which of the Cards you are currently viewing, identified by the PCI bus number and PCI bus device number of the currently selected card. 24 Korg 1212 I/O 1212 I/O Utility Word Clock & Sample Rate Clock Source When connecting multiple digital audio devices­such as the 1212 I/O, an ADAT system, and a S/PDIF device­it is important that the word clocks of the devices be locked together. If the clocks are not locked, the audio may be marred by pops and clicks. The 1212 I/O can lock to incoming clocks from any of its digital inputs, or it can generate its own clock. For more information, see "A few words on word clock, " on page 20. You will need to select different clock sources from time to time, depending on what you are currently doing with the 1212 I/O; see the section "Applications, " on page 32, for details. This is a dual-purpose setting, which depends on whether or not a device is connected to the Word Clock input. If an external clock source is connected to the Word Clock input, and is generating a word clock signal, then it will be used as the master word clock source. With this setting, the Sample Rate parameter, below, controls the clock. First, it sets the clock rate when the Clock Source parameter, described above, is set to Internal. Second, it sets the sample rate information embedded in the S/PDIF output data, which in turn sets the sample rate of any connected S/PDIF devices. When transferring audio from the ADAT inputs to S/PDIF output, it is important to set this parameter so that it matches the sample rate of the ADAT. Since original ADATs used their pitch controls to choose between 48kHz and 44. 1kHz, the 1212 I/O cannot be sure of the sample rate of ADAT input. Setting the Sample Rate parameter lets the S/PDIF device know what rate to expect. If this parameter is set incorrectly, the connected S/PDIF device may not function properly. The internal sample rate and S/PDIF output will be set to 48 kHz. English Analog Input Trim Left 0dB to -78dB, OFF. This allows you to attenuate the analog input sensitivity of the left channel, prior to the A/D conversion. At the Korg 1212 I/O 25 1212 I/O Utility maximum value of 0dB, the volume of the input signal will be unchanged. At the minimum value of OFF, the input signal will be completely muted. 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. [. . . ] In our experience, most of these situations are the result of interactions with video cards that tie up the PCI bus for extended periods of time. Try adjusting the acceleration settings of other devices on the PCI bus. In some instances (depending upon the PCI BIOS of your PC), placing the cards in new locations will change their assigned priorities on the PCI bus. If you have a Matrox Millennium or Mystique video card, do the following: 1. [. . . ]