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RACKMOUNT SERVSWITCH™ BRAND CAT5 KVM EXTENDER LOCAL HUBS
6.2.1 S
PECIAL
C
ONCERNS
A
BOUT
C
ONNECTING
A
UDIO
D
EVICES TO THE
KVM/S
ERIAL
/A
UDIO
E
XTENDER
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
(“audio 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 (“audio 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 Hub’s or Remote’s “audio out” connector. Run a
standard 3.5-mm mini stereo audio cable such as product code EJ110-0010
from the “audio in” connector of the Remote or Local Hub at the other end of
the link to the “LINE OUT” connector of a PC or sound card—colored lime
(yellow-green) in the PC99 specifications, but often colored differently—or of
a CD player or other audio source.
• To attach a microphone that the sound card will be amplifying (the preferred
type of microphone attachment): Plug the microphone directly into the
Remote’s “audio in” connector. Run a standard 3.5-mm mini stereo audio
cable such as product code EJ110-0010 from the Local Hub’s “audio out”
connector to the sound card’s “MIC” (“microphone in”) connector (colored
pink in the PC99 specifications, but often colored differently).
To attach a self-amplified microphone, CD player, etc.: Plug the device
directly into the Local Hub’s or Remote’s “audio in” connector. Run an audio
cable such as EJ110-0010 from the “audio out” connector of the Remote or
Local Hub 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 5.6
. Plug the microphone
directly into the Remote’s “audio in” connector. Run an audio cable such as
EJ110-0010 from the Local Hub’s “audio out” connector to the sound card’s
“LINE IN” connector (colored light blue in the PC99 specifications).
