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CHAPTER 3: Installation
3.2 Placement
It’s a good idea to put each ServSwitch Professor as close as possible to the CPU
and associated keyboard, monitor, and mouse that you want to attach to it. This is
because using short CPU and User Cables to run to your local devices is not only
neater and less expensive, but will also provide the best video quality to and from
those devices.
Typically you should leave the Professor’s front panel accessible in order to view
the STATUS and SEND LEDs, though once your whole system is installed you
probably won’t need to see these LEDs. As you place your units, also keep in mind
that the total length of bus cable in your system should not exceed 250 feet
(76.2 m), especially at high video resolutions.
3.3 The Installation Procedure
This section provides instructions for installing a single ServSwitch Professor
system; simply repeat these steps for each ServSwitch Professor, and your system
will be ready in no time. For an illustrated example of the elements of a basic
setup, see Figure 3-1 on the previous page.
3.3.1 S
ETTING THE
U
NIT
’
S
B
US
A
DDRESS
A ServSwitch Professor determines what its address is by reading the setting of its
bottom-mounted configuration DIP switch (show in Figure 3-3) at power-up. The
DIP switch represents a binary number: Each switch position corresponds to a
power of two that is
added
to the station’s address if the position is ON (UP) or
not
added
to the address if the position is OFF (DOWN). From left to right, the
positions correspond to 128, 64, 32, 16, 8, 4, 2, and 1. So, for example, if the
Professor station reads these positions as being set to UP DOWN DOWN UP UP
UP DOWN UP, it will add 128 + 16 + 8 + 4 + 1 and arrive at a total of 157, which it
will use as its address.
Figure 3-3. The configuration DIP switch.
1
2
3
4
5
6
7
8
128
64
32
14
8
4
2
1
ON
OFF
16
Switch position
Address = 1
Decimal value
