Troubleshooting - Extron electronics DVI DA2 User Manual

Troubleshooting

No output signal — Check that the front panel LED is lit. If it is not, check the power
supply connections to the unit (see
No output signal or poor quality signal — Check the integrity of the cabling to output 1
(Local Monitor) and ensure that output 1 is connected to the distribution amplifier before
powering on the source device.
If the source device cannot communicate with output 1 when it is being powered on, it may
not be able to send a video signal or the signal may have the wrong resolution or refresh
rate.
No output signal or poor quality signal — Check the input and output cabling
DVI signals run at very high frequency and poor connections can cause degradation or loss
of the signal, or jitter. To avoid this:
•
•
Display device shows a flashing black or blue screen, snow or other distortion — A
device that is not HDCP compliant may be receiving HDCP-encrypted signals.
The DVI DA2 and DVI DA4 are not High-Bandwidth Digital Content Protection (HDCP)
compliant. They will pass HDCP-encrypted signals only to the local output device.
Signal on local monitor but not on other displays — Check that all output devices
(monitors or projectors) can handle resolutions equal to or greater than that of the local
monitor.
Use only cable that is designed for DVI signals.
Limit or avoid the use of adapters.
page 4).
DVI DA2 and DVI DA4 • Operation
5).
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