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Chapter Three
Eagle TX Series AMOS Based Terminal Server Technical Manual, Rev. 01
If problems occur when equipment near the terminal server is turned on—for example, if your terminal
server stops functioning when someone uses the photocopier—improper grounding could be your
problem. We recommend a low impedance power conditioner to filter out these power problems. Alpha
Microsystems can provide the approved power conditioner type. Ask your VAR for further details.
POWER AND CABLE CONNECTIONS
Before selecting a site for your product, determine if the area where you want to place the Eagle TX
Series has adequately regulated AC power. If you request it, many power companies will install test
equipment to determine if there is a need for additional line regulation. You can also test line voltages
using a high speed line transient recorder. If, over several days of testing, the line voltage varies more
than 10 percent from the rated line voltage, you may need to install a power conditioner and a new
dedicated AC power circuit. Alpha Micro products require a properly grounded power outlet for the
product to run correctly. All peripherals (such as terminals) connected via serial cables should also have
properly grounded outlets.
A "transient free," or smooth and consistent, power source and a properly installed earth ground can
significantly improve the reliability of your Eagle TX Series product. While the product is in use, it is
important to maintain a constant line voltage free of power surges, fluctuations and impulses.
Be sure the power rating for the power lines the product will be connected to is adequate for your
computer or any future systems you may be planning to install. In North America, a standard 15 Amp,
115 Volt grounded connector-type outlet is required for the CPU chassis. In some other countries, the
requirement is a 230 Volt AC power source.
The maximum power requirements for the terminal server are:
•
115 Volt AC at 5 Amps, or
•
230 Volt AC at 3 Amps
Additional outlets are required for each peripheral connected to the terminal server. Alpha Micro
products come with a standard six-foot power cord. If this is not long enough, be sure any extension
cords used are rated for a full 15 Amps—otherwise, the full voltage may not reach your computer. This
can affect the efficient operation of your computer.
A point to remember is that the closer you get to either end of the AC voltage power range, the less
efficient the product will be.
To avoid electrical interference, sources of electrical noise such as air conditioners, copiers, electric
typewriters, or cleaning equipment should not be connected to the same power circuit as any computer
component.
Be sure to follow all Ethernet network configuration and cabling specifications. With almost all
users connected via the network, reliable network performance is critical. While non-conforming
configurations sometime work adequately in small tests, they almost always degrade performance
or fail completely during actual use.
