Black Box ACUMREM, Руководство по установке

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SERVSWITCH™ BRAND CAT5 KVM EXTENDER STANDALONE REMOTES
3.5 Setting the Flow-Control Jumpers in the ACUSREM
Most applications for the serial connection in KVM/Serial Extender systems won’t
require hardware flow control. However, some PCs still need to see active flow-
control signals in order for their serial ports to function, so the Extender’s factory-
default setting for hardware flow control is “all signals looped back.” If you need a
different setting, the serial daughtercard in the ACUSREM Remote Unit has a
series of jumpers that allow you to select either RTS/CTS or DTR/DSR flow
control, or to loop back one pair of signals but not the other.
Figure 3-2 on the previous page shows the daughtercard, and Figure 3-3 on the
next page shows how the flow-control jumpers should be set for various
handshaking options. (You must set the flow-control jumpers on the matching
daughtercard in the Local the same way.) Please call Black Box Technical Support
if you’re unsure what kind of flow control your application will call for.
3.6 Setting the Microphone-Amplification Jumper in the KVM/Serial/Audio
Remotes (Not Normally Necessary)
All sound cards that we have tested so far with the KVM/Serial/Audio Extenders
are able to amplify the incoming signal from a microphone—the card should be
set to amplify the signal by +20 dB. If the sound card of the computer you’ll be
attaching can do this, or if the microphone itself has on-board amplification, you
can skip ahead to
Chapter 4 .
However, if you’ll be attaching both (a) a microphone that can’t amplify itself
and (b) a sound card or audio device that can’t amplify the microphone’s signal,
you’ll have to set the KVM/Serial/Audio Extender to do the amplification by
installing a jumper on the jumper posts labeled “MIC” mounted on the audio
daughtercard for that microphone’s Extender link. There’s one daughtercard
inside the ACUVREM Remote Unit (see Figure 3-1 in
Section 3.2
) and the
ACUWREM Remote Unit; there are six daughtercards (one for each link) inside
the ACU1006MRVA Remote Hub. Once you install a jumper on the MIC jumper
posts for a particular link (there should already be a jumper “hanging off” one of
the posts that you can use), the Extender will amplify that link’s incoming
microphone signal by +17 dB.
For microphone-installation directions, see Section 4.2.1 .