APC S20BLK User Manual download pdf (Page 4)

Your High-Performance AV Experience Begins (and Ends) with Power.

Signals and storage are both dependent on electricity.

The quality and availability of power for high-end AV systems is just as relevant and important as it is for any computer system or network. Poor power can

have a noticeable impact on sound and video quality. Component power supplies and electrical circuits can be stressed or even destroyed outright. Power out-

ages can result in the loss of system presets and in missed DVR recordings. The presence of hard drives and network connectivity makes AV systems even more

susceptible to damage or lowered performance as the result of power disturbances. Blackouts can make home security and automation systems inoperable. The

ability to conduct basic household functions and chores can be lost simply because of changing power conditions, often that have nothing to do with your system.

There are several types of power anomalies that can negatively affect your audio/video experience:

Power Anomaly:

4

SURGE

Short-term increase

in voltage levels

4

SPIKE

Dramatic and

instantaneous

increase in voltage

4

NOISE INTERFERENCE

Electromagnetic and radio

frequency interference

(EMI/RFI)

4

BROWNOUT/OVER-VOLTAGE

Sustained low or high RMS voltage

levels

4

BLACKOUT

RMS voltage goes to “0”

4

VOLTAGE DISTORTION

RMS voltage

waveform is distorted

Typical Cause of

Disturbance:

Start/stop of

household appliances

(washing machine,

AC, etc)

Lightning Generated by appliances,

HAM radios, nearby radio

stations and even AV

equipment itself

Too much demand on electric utility;

running of larger household appliances

Overloaded utility network;

storm activity; downed power

lines; animal infestation

Powering household

appliances and power tools

Effect on

Audio Quality:

N/A None If severe enough, can cause

an audible hum or buzzing

sound

Limits dynamic range of sound produced

by the amplifier; not enough current is

available during peak periods

N/A Possibly degrades

sound quality

Effect on

Video Quality:

N/A None Visible lines of distortion

(“hum bar” distortion)

possible

Creates visible lines of distortion Damages or reduces lifespan of

projector bulbs

May result in visible

lines of distortion

Effect on

Components:

Stresses power

supplies and/or causes

premature failure

Catastrophic failure N/A Stresses power supplies by forcing larger

current draws; may result in premature

failure due to increased stress

Entertainment becomes

unavailable or is interrupted; DVR

recordings are lost or missed;

pre-sets are lost; hard drives may

be damaged or data lost; security

and home automation systems

become inoperable

Stresses power

supplies

APC Solutions:

S Type, H Type, C Type S Type, H Type, C Type S Type, H Type, C Type S Type, H Type S Type S Type

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APC S20BLK User Manual Page 4

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