What is “Running OPC”?
OPC stands for Optimum Power Control. Most CD-R units do a power calibration test before writing to adjust the laser power to the correct strength. Different brands of media and different recording speeds require slightly different power levels. Too much power can create oversized marks which can interfere with each other, and too little power can produce undersized marks which, in extreme instances, can cause read failures. The recorder reads a recommendation for the initial power level from the Recommended Optimum Recording Power value from the ATIP (section (2-38)) on the disc. This is used as a starting point for a series of write tests in the Power Calibration Area (PCA) of the disc. Running OPC goes a step farther by actively monitoring the write process and adjusting the laser power as needed. If the writer encounters dust or fingerprints, the laser power can be increased to burn through the obstacles.
OPC stands for Optimum Power Control. Most CD-R units do a power calibration test before writing to adjust the laser power to the correct strength. Different brands of media require slightly different power levels. Running OPC goes a step farther by actively monitoring the write process and adjusting the laser power as needed. If the writer encounters dust or fingerprints, the laser power can be increased to burn through the obstacles. This is especially useful for discs that are moved around between recording sessions, such as CD-RW discs or multisession CD-Rs. For more information, see http://www2.osta.org/osta/html/opc.html.
OPC stands for Optimum Power Control (or Optimum Power Calibration, depending on who you believe; the process is sometimes known as Dynamic Power Control (DPC) or Direct Read During Write (DRDW)). Most CD-R units do a power calibration test before writing to adjust the laser power to the correct strength. Different brands of media and different recording speeds require slightly different power levels. Too much power can create oversized marks which can interfere with each other, and too little power can produce undersized marks which, in extreme instances, can cause read failures. The recorder reads a recommendation for the initial power level from the Recommended Optimum Recording Power value from the ATIP (section (2-38)) on the disc. This is used as a starting point for a series of write tests in the Power Calibration Area (PCA) of the disc. Running OPC goes a step farther by actively monitoring the write process and adjusting the laser power as needed. If the writer encounters dust
(2003/12/02) OPC stands for Optimum Power Control (or Optimum Power Calibration, depending on who you believe; the process is sometimes known as Dynamic Power Control (DPC) or Direct Read During Write (DRDW)). Most CD-R units do a power calibration test before writing to adjust the laser power to the correct strength. Different brands of media and different recording speeds require slightly different power levels. Too much power can create oversized marks which can interfere with each other, and too little power can produce undersized marks which, in extreme instances, can cause read failures. The recorder reads a recommendation for the initial power level from the Recommended Optimum Recording Power value from the ATIP (section (2-38)) on the disc. This is used as a starting point for a series of write tests in the Power Calibration Area (PCA) of the disc. Running OPC goes a step farther by actively monitoring the write process and adjusting the laser power as needed. If the writer en
