Black Box ACU3009A Specifications download pdf (Page 52)

CHAPTER 8: Troubleshooting

8.1.5 A

UDIO

EVICES

(ACU3022A KVM/S

ERIAL

UDIO

YSTEMS

NLY

)

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.

8.1.6 V

IDEO

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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Black Box ACU3009A Specifications Page 52