Broadcast Tools DSC-20 Installationshandbuch PDF herunterladen (Seite 7)

Preliminary 8-2002 RSHD Smartcaster Installation Manual

Figure 2 Typical small office UPS, (photo courtesy APC) http://www.apc.com/

The power the electric utilities provide to our homes and radio stations has some

problems. The actual voltage is legally allowed to vary over a range of +/- 5% at the

generating station. Large power loads going on- or offline can create voltage surges or

sags called transients. Conditions like a hot summer day with everyone running their air

conditioning full blast can tax total generating capacity causing serious brownouts or

drops in available current. These can play havoc with sensitive electronic equipment, and

cause extensive damage. Add to this the surges caused by electrical storms, and your

computer starts to look like a duck during hunting season!

At the very least every computer should be protected by a good quality surge suppressor.

This does not refer to the $3.00 bargain at the local hardware store. Expect to pay at least

about $20.00 for real protection. Look for a suppressor that meets the UL (Underwriters

Laboratories) 1449 rating of 330 volts or lower. This means that the suppressor will block

voltage spikes exceeding 330 volts from reaching your connected equipment. It should

also meet the UL 1283 specification for EMI/RFI noise reduction. This refers to Electro

Magnetic noise, and Radio Frequency noise that can be picked up on the power lines

acting like a big antenna, and carried on the lines into your station.

Figure 3-Isotel Surge protector w/ modem protection (typical)

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Broadcast Tools DSC-20 Installationshandbuch Seite 7