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SERVSWITCH™ BRAND CAT5 KVM/SERIAL/AUDIO EXTENDER
6.2.1 S
PECIAL
C
ONCERNS
A
BOUT
C
ONNECTING
A
UDIO
D
EVICES
Before you connect any sound equipment to the KVM/Serial/Audio Extender,
here are some things you should keep in mind:
The Extender’s audio interface is stereo, bidirectional (sound can be transmitted
in both directions across the link at the same time), and line-level (it supports
devices that transmit and receive at up to 5 volts peak-to-peak). In the output (“line
out”) direction, it’s designed to take the output from a computer’s sound card or
other line-level source and send it to a set of powered speakers at the remote site.
In the input (“line in”) direction, it’s designed to take input from a microphone at
the remote site and send it to a local sound card or other line-level destination. It
can also send signals in the opposite directions (for example, sound from a remote
source to local speakers, or from a local microphone to a remote recorder),
although a local microphone would have to be self-amplified and would have to
output signals at line level.
• To attach headphones or powered speakers: Plug the headphones or speakers
directly into the Local or Remote Unit’s “Line Out” connector. Run an
included audio cable from the “Line In” connector of the Unit at the other
end of the link to the “LINE OUT” connector of a PC’s sound card (colored
green in the PC99 specifications) or of a CD player or other audio source.
NOTES
The Dual-Access Extender’s Local Unit doesn’t have pass-through
connectors for local audio. If you want to listen to audio output from the
CPU at the local user station, you’ll need to attach an audio-jack doubler
to your sound card’s “LINE OUT” connector. These are inexpensive and
are available at many audio and electronics stores.
• To attach a microphone that the sound card will be amplifying (the preferred
type of microphone attachment): Plug the microphone directly into the
Remote Unit’s “Line In” connector. Run an included audio cable from the
Local Unit’s “Line Out” connector to the sound card’s “MIC” (“microphone
in”) connector (colored pink in the PC99 specifications).
To attach a self-amplified microphone, CD player, etc.: Plug the device
directly into the Local or Remote Unit’s “Line In” connector. Run an included
audio cable from the “Line Out” connector of the Unit at the other end of the
link to the “LINE IN” connector of a PC’s sound card (colored light blue in
the PC99 specifications) or of a tape recorder or other audio destination.
To attach a microphone that the Extender will have to amplify itself: Set the
Extender’s MIC jumper as described in
Section 5.3
. Plug the microphone
directly into the Remote Unit’s “Line In” connector. Run an included audio
cable from the Local Unit’s “Line Out” connector to the sound card’s “LINE
IN” connector (colored light blue in the PC99 specifications).
