APC Back-UPS Pro® - APC Media

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1.2 Radio Frequency Interference
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules and the Class B limits for radio noise emissions from digital apparatus set out in
the Radio Interference Regulations of the Canadian Department of Communications. These limits are designed
to provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this equipment
causes interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following measures:
reorient the receiving antenna
increase the separation between the equipment and the receiver
connect the equipment to an outlet on a circuit different from that to which the receiver is connected
consult the dealer or an experienced radio/TV technician for help.
Shielded communications interface cables must be used with this product.
War ar arning: ar ning: Changes or modifications to this unit not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.
1.3 Theory of Operation
This high-performance, line-interactive, uninterruptible power source (UPS) provides clean, reliable, AC
power to computer systems — protecting them from power blackouts, brownouts, swells, sags, surges, and
interference.
Normally, the UPS operates “on-line,” supplying power from the utility utility input input to the load load (workstation,
server, or other device). The con conver con er erter er ter circuitry is used to maintain an optimal float charge level on the ba ba bat- ba bat
t
ter tery. ter
When the utility fails, the disconnect disconnect switch opens and the con conver con er erter er ter supplies AC power to the load load. load The
loads operate normally until shut down or until the battery is exhausted. The UPS automatically transfers
the load back to utility power and recharges the batteries when the line voltage returns to normal.
The UPS also provides surge protection and EMI/RFI EMI/RFI f ffiltering
f iltering iltering, iltering as well as Smar Smar SmartBoost
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automatic voltage regulation, which corrects high and low input voltage without drawing power from the
battery.
Output Output Output contr control contr ol uses the UPS’s remote interface to turn the load on or off, without disabling other UPS
functions.