Black Box KV6104SA-R2, Manual

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SERVSWITCH™ DUO AND SERVSWITCH™ QUADRO
A sample system using a single Duo and Duo Extender is shown in Figure 3-2.
Refer to Section 5.16 for how local/remote shared access works.
Figure 3-2. System attached to a single ServSwitch Duo and Duo Extender.
3.4.3 C
ASCADED
D
UO
/Q
UADRO
S
YSTEMS
Multiple ServSwitch Duos and/or ServSwitch Quadros can be cascaded (connected
together in a one-to-many scheme) in order to increase the maximum number of
available CPU and user ports in your KVM-switching system. This can be
particularly useful where clusters of computers are located some distance from
each other, because each Duo/Quadro acts as a kind of signal booster or repeater
and can be long distances away from the other Duos/Quadros in the system. (You
can mix 4-, 8-, 12-, and 16-Port Duos and Quadros in the same cascade.)
Because it has an intelligent communication system, the ServSwitch Duo/
Quadro can detect and communicate with other Duos/Quadros through the
keyboard cabling that runs between them. The master Duo/Quadro in a cascade
can positively verify that the other attached Duos/Quadros have correctly responded
to a switching request from the user. Duos/Quadros also intelligently manage the
cascade links, allocating them on a “first come, first served” basis, similar to the way
a telephone system would manage connections to individual phones.
CPUs
Extension
cabling
Twisted-pair
cabling up to
200 m (655 ft.)
long
Local user station #1
(optional)
Remote user
station #1
User station #2
(local only)
ServSwitch Duo
ServSwitch Duo
Extender