Appendices
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Page 19
Appendix A. Troubleshooting
If you experience problems when installing or using the modules, please check through this section for a possible solution. If your
problem is not listed here and you cannot resolve the issue, then please contact Black Box technical support.
No video image is displayed on the remote monitor
• Check the yellow indicators on the local and remote modules while no keys are pressed on the keyboard and no mouse move
-
ments are being made:
LOCAL: If the yellow indicator is flashing*, then the video feed to the local module is not valid. Try connecting a DVI monitor
(preferably using the same DVI link cable as used with the local module) directly to the computer and check for a correct
image.
REMOTE: If the yellow indicator is flashing*, then the video feed via the link cable is not valid. If the link cable is long, try using
a short link cable temporarily to check for basic operation.
If the yellow indicators are off, then the link cable is not properly connected.
• Check that both the local and remote ends of the extender are Dual Link DVI/USB Extender SRX variants. The single link DVI/
USB SRX modules are not compatible.
Only single link resolutions are displayed
• Check that the video cables connected to the local and remote modules are both specifically dual link types.
Video blanking is occurring on the remote display screen
• Check that the correct type and length of link cable is being used. Please see the cable advice given on page 2.
* Take care not to confuse the
flash
and
blink
codes used by the yellow indicators:
•
A
flash
is when the yellow indicator shows a regular on/off cycle every second, to warn that there’s a video feed
problem.
•
A
blink
is when the yellow indicator is mostly on with short off periods, to confirm that a valid dual link video signal is
present.
