Visual Circuits ReelTime 4, Руководство пользователя

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Troubleshooting Tips
45
No audio
❏
Make sure mute button is not checked.
❏
Check cables and test with other audio source.
❏
Be sure not to mix audio only, video only or files with both
audio and video on the same channel.
More than one board will not play or make a
few horizontal lines on the screen
❏
Make sure BIOS is not set to PnP operating system.
❏
Verify number of boards and number of channels using
VccReg.exe driver editing utility.
RGB Sync or scan line noise
In some installations with sensitive projectors or with long cable
runs, you will notice noise or rolling scan lines. Usually
installations where all 4 channels of a board play back
independently, is more likely to experience this behavior. This is
due to a separate syncronization output for each channel.
❏
Verify connectors, routers, line doublers and other hardware
to be sure that the 75 ohm impedance of the run is not
broken.
❏
Confirm cable lengths to signal strength. Visual Circuits’
products conform to standard audio visual standards. If
unsure, consult with the hardware manufacturers for
equipment specifications.
❏
Be sure that all equipment is properly grounded. Also be
sure all cabling is properly shielded and avoid running
cables across or through other equipment or cabling where
noise may be introduced.
❏
RT Daughter Card use: RT Daughter cards when attached
to the ReelTime 4 baseboard, will synchronize the outputs
of all channels to the same scan rate. This may also
eliminate errant line noise. Consult with your Visual
Circuits representative for details on this option.