Broadcast Tools DSC-20 Manual de instalación descargar pdf (Pagina 9)

Preliminary 8-2002 RSHD Smartcaster Installation Manual

capacitors exist inside a computer. Further, safety agencies such as UL require that any

capacitors that can supply a dangerous shock must have a bleeder resistance across them

that will quickly discharge the capacitor to a safe level once supply power is

disconnected.

The only place you need to be worried about shock is inside a CRT based monitor where

the anode and focus supplies are measured in the thousands of volts but at a very low

current. The picture tube (CRT) can retain a shock danger for a long time, even after

being shut off and unplugged.

If you use a modem, it is also very important to protect it from surges, especially from

electrical storms, being carried by the telephone lines. This is covered by UL497A

specification for Secondary Telecommunications. Most of the surge devices available for

home use utilize Metal Oxide Varistors (MOV); these are electronic components that

change resistance according to the voltage applied to them. They work very well, but the

voltage spikes they intercept will eventually damage them. For this reason, the suppressor

should have an indicator light to show if the unit is still offering protection, if that light

goes out or begins to flicker, the unit should be replaced. The amount of energy the unit

can suppress is rated in joules, the higher the number of joules the better. Finally, be sure

the MOV protection covers all three legs of the circuit including ground,

LAN Network CAT-5 Wiring

To make up Cat-5 connections for networking computers with hubs and switches.

Align the wires in the following order from left to right. The order is important since

there is a wiring standard defined by the Telecommunications Industry Association (TIA)

http://www.tiaonline.org. It's called the EIA/TIA-568 Commercial Building

Telecommunications Wiring Standard, and you can find more information on it here:

http://www.digital-delivery.com/Standards.htm#s5

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Broadcast Tools DSC-20 Manual de instalación Pagina 9