Troubleshooting
Problem Solution
Distribution Amplifier will not
operate
Make sure the 5V power is plugged in the back of the unit.
Check to see if the power LED light is on.
No picture(or signal)
Or Poor picture
1. In case your video source is HDCP enabled, make sure
your video display(HDTV) is HDCP compliant.
2. If you are using copper based DVI cable, overall length of
the cables(length of the cable from video source to switch
and length of the cable from switch to display) should not
exceed 20ft. Exceeding 20ft. with copper based cables will
result in no or poor picture quality. To extend beyond 20ft,
please use fiber optical DVI extension cables such as
DTronics Inc.’s Model OC cables.
3. Use high quality DVI cables.
4. If you are using computers, try other refresh rate settings.
Most HDTVs have refresh rate of 48Hz and computer’s video
cards are usually set at higher refresh rate. Try lower refresh
rates.
5. Make sure all DVI connectors are tightly secured to all DVI
ports. loose screws on the DVI connectors will result in no or
poor picture.
6. Turn off all equipments(video source, switch and HDTV)
and restart all equipments.
Display Conflict
Turn on DDC for only one DVI output and turn off DDC for all
other DVI ports. The port with DDC on must be connected to
a display. Please refer to “Video Connection” guide in this
manual.
Incorrectly sized picture/resolution
or No picture
Please remember that your video source will only support one
resolution setting. To connect 1600x1200 resolution display
and 800x600 resolution display, the resolution setting of your
video source must be set to the lower resolution setting
(800x600) OR, turn on DDC for the 800x600 display and turn
off DDC for 1600x1200 display.
