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CHAPTER 3: Installation
• To connect the bus to the
last
station, take the bus cable running from the
previous station’s BUS OUT port and attach it to this station’s BUS IN port,
then attach a bus terminator to the last station’s BUS OUT port.
Remember that cables must run from BUS OUT ports to BUS IN ports; never
connect cables from BUS IN to BUS IN or BUS OUT to BUS OUT. Also, do
not
run bus cable in such a way that a ring is formed; your system will not work if you
do.
3.3.6 P
OWERING THE
P
ROFESSOR
Once you’ve installed all of the equipment in your system, take these steps to
power up the system:
1. Making sure that all of the CPUs attached to the system are OFF (powered
down), take the output cord of each Professor’s power supply and plug its
5-pin DIN male connector into the 5-pin DIN female power inlet on the rear
panel of the Professor. Plug each power supply’s transformer (115 VAC) or
input cord (230 VAC) into a nearby AC-power outlet.
2. Push in the ON/OFF button on each Professor’s rear panel to power it up.
3. When you power up each Professor, its yellow status LED will light briefly and
go out. After a few seconds the status LED will flash irregularly as it talks to
the keyboard and mouse attached to the Professor. Then, if other ServSwitch
Professors are on the bus, the LED will flash at a steady one-second interval. If
it flashes at a faster rate, about three times per second, this indicates either a
hardware error or a duplicate address. See
Chapter 5
for more information.
4. Power up the connected CPUs one by one, giving each one time to boot
completely before turning ON the next one. When the CPUs are powered up
after the Professors, the Professors will autodetect each CPU’s keyboard mode
and emulate all keyboard and mouse functions for automatic boot-up. (You
might want to issue a Keep Settings command after initial bootup, so that the
Professor saves the mode settings it has autodetected to nonvolatile memory.)
