Broadcast Tools DSC-20 Manual de instalación descargar pdf (Pagina 15)

Preliminary 8-2002 RSHD Smartcaster Installation Manual

Satellite sources-Audio

In the appendix of this document is a section on some satellite receivers. The audio from

these and other sources needs to be wired to the RIDZ switcher. It is recommended that

this wiring be done for any source that you expect the computer to route either to air, or

to the record bus. Please consult the section of this manual called “Wiring the RIDZ” for

specifics on this step. Pay close attention to the parts about balanced and unbalanced

audio.

Extra hot audio sources

There is still audio gear in many radio stations that have really hot outputs, like + 10 or

more dB! Because you are mixing sources from –10 into the system, sometimes these

extra hot sources will BLEAD into you audio on other channels, padding these sources

down to a true 0 dB may be easier than trying to align all the other sources to match.

Again either use an H PAD for balanced audio or purchase an adjustable device like the

STP-1 from RDL.

For 600 ohms, a 10dB “H” pad will have 150 ohm resistors in the four arms, and the

cross resistor will be 422 ohms. For 20 dB, the arms are 250 ohms, and the cross is 121

ohms.

You can find a calculator for building “H” pads at:

http://www.mcsquared.com/dbframe.htm

http://www.discovercircuits.com/resources/calculators.html

is another web site with many other useful calculators.

Satellite sources-Closures

See the RIDZ section later in this book for information on connecting tone decoders and

relay closures to the 780 boards.

Software setup and testing

Console audio

Broadcast Console is a term that can range from a simple under 100 dollar mixer, to an

all digital beast costing over $20,000, so it is difficult to get very exact about what to

hook up to it, but here are some common situations.

“I am fully automated all the time, I just need to get on the air live in special situations.”

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Broadcast Tools DSC-20 Manual de instalación Pagina 15