Cabletron Systems MMAC-M3FNB, Обзор и руководство по установке

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INTRODUCTION
Page 1-5
Universal Power Supply
The MMAC-M3FNB power supply senses and automatically adjusts to
the input voltage and frequency. It is designed to operate at 110 or 220
volts without any user configuration.
Built-in Power Supply Protection
The power supply module automatically powers down under any of
the following conditions: thermal overload (thermal protection);
shorted output (short circuit protection); or excess output voltage
(over-voltage protection). The power supply will automatically recover
when a thermal overload or shorted output condition is corrected;
when an over-voltage condition is corrected, the power supply requires
AC power cycling (turn power switch off, then on again) to recover.
Power OK Signal
The same signal that illuminates the Power OK LED on the power
supply module will also alert the management module that the power
supply is functioning normally.
Flexible Network Bus
The MMAC-M3FNB’s Flexible Network Bus lets you combine Token
Ring, FDDI, and Ethernet modules in the same hub. Cabletron
Systems offers a full line of media interface modules that let you
create new networks and extend and connect existing networks.
The fan tray is hot-swappable; however, the MMAC
chassis should not be run for extended periods of time
without the fans installed, as it will quickly overheat.
The handles provided on the fan tray and power supply
are for installation only; they are not designed to
support the full weight of the chassis, and should not
be used as carrying handles.