M-Audio FireWire 1814, Руководство пользователя

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11 Troubleshooting
The FireWire 1814 has been designed to give you high performance and professional
quality audio. It has been tested under a wide range of systems and operating
conditions. However, there are a virtually limitless number of operating scenarios, any of
which could affect your system’s performance. Though this section cannot cover all
possible issues you may encounter, we would like to offer you some suggestions for
dealing with common problems.
We recommend that you avoid connecting too many devices. The FireWire bus is a
dependable, high-speed, high-bandwidth protocol that is ideally suited for digital audio.
Nevertheless, it is important to remember that audio and multimedia streaming places
considerable demands on your processor and the FireWire bus. Although it is
theoretically possible to chain many multiple FireWire devices in series, doing so has the
potential to degrade your audio performance.
Generally, FireWire devices do not suffer from the IRQ conflicts often encountered with
PCI cards on Windows PCs. If you are having trouble getting audio in or out of your
FireWire 1814, please check the following:
If you have no sound:
•
Check to see if the FireWire 1814 drivers are properly installed. In Windows XP, go
to the Control Panel and double-click the System icon (under Performance and
Maintenance if you are in Category view). Select the Hardware tab and click the
Device Manager button. Click the plus sign (“+”) next to Sound, Video and Game
Controllers, and locate the FireWire 1814 listing. If you see a question mark or
exclamation point next to it, or if you don’t see it listed, you may need to reinstall the
driver software.
•
Make sure your audio software has been set up to use the FireWire 1814. Open your
application’s audio settings page and check to see if the FireWire 1814’s ASIO,
WDM, or CoreAudio drivers have been selected.
•
If you’re certain the FireWire 1814 is correctly installed and configured for your audio
software, check your signal path. Make sure your inputs are routed correctly by
verifying that your application is receiving audio signal. Make sure your outputs are
routed correctly so that your signal is sent to your headphones, amp and/or monitors.
•
Check your audio connections and cables to make sure everything is plugged in
correctly.
•
Check if the power button is enabled.
•
Check mic/line selector switch to verify that you’ve chosen the proper input.
If you’re trying to record a digital input to the FireWire 1814 and have no sound:
•
Make sure your audio software is configured to receive digital input, and that the
input source is set as clock master.
If you’re experiencing clicks and pops in your recordings:
•
Make sure your input levels are not too hot, as this can cause distortion and clipping.
Check the input level meters in your audio application.
•
If you are recording a digital input source, make sure the FireWire 1814’s sync
source, as well as the sync source in your audio software, are set to external .