Daktronics SPORTSOUND 2000HD, Installation Manual

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Troubleshooting
16
Symptom/Condition Possible Cause Solution/Items to Check
Weak (low level) audio from
cabinet
Low level source
Ensure output from the mixer is
professional line level.
Analog signal out of the
mixer is not being correctly
converted to a digital signal
Set the fiber box ANALOG
BACKUP switch ( Figure 30 ) to
ANALOG and see if problem
goes away.
Improper gain at Analog to
Digital Converter (in fiber box)
Adjust gain according to
Biamp Audia Input & Output
Expanders Operation Manual
in Appendix B .
Poor sound quality from audio
cabinet (distortion)
Poor source material (CD or
MP3 with heavy compression
or distorted material)
Use high quality audio files
(.wav).
Clipping audio at source
(audio control rack) output
Bring source level down below
clip.
Bad driver or amplifier
Perform a system check via
Monitor Application. Refer to
System Testing (p�17) .
Intermittent audio from audio
cabinet
Bad fiber connection
Set the fiber box ANALOG
BACKUP switch ( Figure 30 ) to
ANALOG and see if problem
goes away.
Amplifier modules are over
driven into protect mode
Reduce source output level.
Bad amplifier module
Open CobraNet Discovery
and check for errors. Refer to
System Testing (p�17) .
Analog to Digital Converter (in
fiber box) failure
Refer to Input/Output Expander
(p�24) .
Low level (-20dB)
(ANALOG BACKUP enabled)
Increase source output level
above -20dB.
Humming/buzzing from audio
cabinet
Ground loop
Disconnect ground at
isolation transformer in the
control enclosure. Refer to
Audio System Humming
Troubleshooting (DD3448287) ,
located online at
www.daktronics.com/manuals .
For more troubleshooting steps, refer to the appropriate audio control rack manual.