Powerrack Rj-69 10 Pin Connectors, (Continued) - Computone IntelliServer RAS 2000 PowerRack Hardware Manual

PowerRack RJ-45 10 Pin Connectors, (
CAUTION: At some installation sites, it may be necessary to connect the chassis ground at one
The following are important points to remember:
The RAS 2000 PowerRack RJ-45 connector is different from the RJ-45 con-
1.
nector that is used on IntelliServer SlimLine and Intelliport II products. The
PowerRack uses a 10-pin connector instead of 8-pins, and the signals are
wired differently. Do not use cables intended for the SlimLine or Intelli-
port II on the PowerRack.
The RAS 2000 uses a special high-speed RS232 interface for its Transmit
2.
Data (TD) signal, and uses a lower voltage than the other RS232 outputs. If
you connect the port to a break-out box or line monitor having LED's, the
transmit LED may not be as bright as the other signals. This is normal and
does not indicate a hardware fault.
The Chassis Ground pin is usually connected to the external case of an RS232
3.
device, and is connected to an "earth ground" through the grounding pin of
the power connector. When a shielded cable is used, this pin is often con-
nected to the cable's shield and provides protection from external electrical
noise. This shield should be only connected at one end to earth ground.
The RAS 2000 PowerRack software does not require the use of Ring Indica-
4.
tor or Data Set Ready signals. Both are provided, however, for possible future
use.
end of the cable but not at both ends. This is because the "earth ground" connection
through the power source is not always perfect, and different "earth grounds" at dif-
ferent locations may have a voltage potential between them. If you connect the two
devices together through the cable shield or chassis ground pin, current will flow
through the shield and damage your hardware.
For more details on how the IntelliServer RAS PowerRack uses these signals, see
the IntelliServer Configuration Guide.
RAS 2000 PowerRack Hardware Guide
continued)
Page 3-3