Black Box ACU3009A Specifications download pdf (Page 27)

SERVSWITCH™ BRAND CAT5 KVM MICRO EXTENDER

5. Configuration

There’s a two-position DIP switch on the bottom of the Remote Unit of the

ServSwitch™ Brand CAT5 KVM and KVM/Serial/Audio Micro Extenders.

Position 1 governs the Remote Unit’s video equalization, while position 2 controls

how the Remote Unit handles keyboard-command recognition.

5.1 Setting DIP-Switch Position 1: Video Distance

The Remote Unit contains video-equalization circuitry which compensates for the

loss in image quality that occurs when you drive video across cables longer than

25 m (80 ft.). If you’ll be running cable between the Micro Extender’s Units to

such distances, you need to configure the Extender for extra equalization before

you install it.

Leave position 1 of the DIP switch in the factory-default UP (OFF) setting if

you’ll be running cable up to (but not more than) 25 m (80 ft.) between the Units.

To boost the equalization if you’ll be running cable between 25 and 50 m (80 and

160 ft.), move position 1 to the DOWN (ON) setting.

If you are not running the cable too far but your video looks bad no matter how

you set this DIP-switch position, the problem is almost certainly being caused by

one of two things. First, check your interconnect-cable routing—does the cable

pass close to a motor, generator, fluorescent lights, etc.? Second, check the wiring

of the interconnect cable. Compare its pinning and pairing with those shown in

Appendix A. (Please realize that signal equalization cannot be exact; regardless of

the setting of this DIP-switch position, the remote video image might never appear

quite as sharp as it would appear with the monitor directly attached to the CPU.)

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Black Box ACU3009A Specifications Page 27