Black Box ACU3009A, ACU3001A manual Sound is distorted, Picture is not sharp, or is badly smeared

CHAPTER 8: Troubleshooting

8.1.5AUDIO DEVICES (ACU3022A KVM/SERIAL/AUDIO SYSTEMS ONLY)

Sound doesn’t seem to get through from the local site to the remote site or vice versa.

1.Check the audio cables, including those attached to your speakers. Are they intact along their length and securely connected at both ends? Are all cables running correctly from “audio out” to “audio in”?

2.Is your sound card actually outputting anything? Check this by temporarily attaching some speakers directly to the card.

Sound is distorted.

1.At what level is sound being output to the Extender? If it’s above line level (5 volts peak-to-peak), sound will be distorted as it passes through the Extender. The Extender doesn’t support devices that output above line level.

2.What type of speakers have you attached to the Extender? The Extender doesn’t support the older, cheap, non-amplified speakers that could be plugged into the “SPEAKERS” jack on old sound cards.

8.1.6VIDEO

The picture is not sharp, or is badly smeared.

1.DIP-switch position 1 on the Remote Unit might not be set for the correct distance. See Section 5.1.

2.Check the interconnect cable between the Micro Extender’s Local and Remote Units. Is it solid-core cable, rated as Category 5 (Category 5e might provide acceptable performance)? Is it intact along its length and securely connected at both ends? And is it wired correctly? (Compare the cable’s specs with those listed in Section 4.2.5 and its wiring with that shown in Appendix A.)

3.Check the video-extension cabling, patch-panel video connections, and other video connections in the system. Make sure everything is properly and securely attached.

4.Are you using an LCD panel? You might need to reduce the refresh rate of your graphics card’s output.

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