Iomega CD-RW USB 2.0 Drive User Manual page 18

Extremely fragmented hard drive
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Not enough space in temporary directory (20MB recommended)
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Hard disk compression might cause buffer underruns. We do not recommend writing from a compressed hard disk or disk partition.
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Very old hard drives
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Problems Creating Digital Audio CDs
Digital Audio Extraction (DAE) is designed to assist you in reproducing material in which you own the copyright or have obtained permission to copy from the copyright
CAUTION!
owner. Unless you own the copyright or have permission to copy from the copyright owner, you might be violating copyright law and be subject to payment of damages and other
remedies. If you are uncertain about your rights, contact your legal advisor.
Copying audio digitally from a CD requires a CD-ROM drive or Iomega CD-RW drive which supports DAE. All Iomega CD-RW drives can perform DAE. Many CD-ROM drives do
not support DAE at all; others do it, but not very well. Few (if any) high speed CD-ROM drives can extract audio successfully at or even near their top-rated data speed.
Unsuccessful audio extraction is easy to detect: it sounds bad (clicks, pops, or hissing within the track). The most common reason is that DAE was performed at too high a speed
for your source CD-ROM or Iomega CD-RW drive to maintain proper synchronization of the audio data it was passing to the hard disk or Iomega CD-RW drive. Audio samples are
skipped or repeated, causing errors which sound to the human ear like clicking, popping, or hissing.
The solution is to slow down DAE. However, with some drives, getting a clean audio extraction requires reading at very slow speeds, with lots of going back and rereading the same
audio samples over again to make sure that everything is in the right place (this is called audio-resynching or jitter correction). Sometimes the read will be so slow that it becomes
impossible to copy directly from your source audio CD to the Iomega CD-RW drive—the read speed is slower than the Iomega CD-RW drive's write speed. In this case you will
have to copy the audio tracks to the hard disk and then record them back to the CD.
For more information, Open the HotBurn console and click the Help icon. Go to troubleshooting and read through the section What is Digital Audio Extraction?
The Iomega CD-RW Drive Writes at a Speed Lower than the Speed Setting
Other USB devices connected at the same time as the Iomega CD-RW drive can affect the Iomega CD-RW drive's performance, especially digital cameras or scanners that are
processing large amounts of data. If you are using a hub to connect several devices to your computer, disconnect the other devices and connect the device directly to either of the
computer's USB ports.
Your Iomega CD-RW USB 2.0 drive has the capability of writing data to both CD-R and CD-RW discs at 24x speed, when connected to a USB 2.0 adapter card. This means that it
can write the equivalent of 24 minutes of audio data in one minute. An audio CD can contain up to 74 minutes of audio data. For example, in 24x mode, it will take around 3 minutes
to write 74 minutes of audio data. Writing non-audio data might be even slower.
If the Iomega CD-RW USB 2.0 drive is connected to a USB 1.1 port, it will run at a much lower speed.
Average write speeds for a 1x CD writer are:
1x for audio = 172 kb/second
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