California Air Tools 1650A Guide de dépannage télécharger pdf (Page 28)

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INSTALLATION CONSIDERATIONS

TURN-ON MODES

Automating the turn-on of your SI-1650 is one of the easiest steps when

installing it in a distributed system. However, do not plug the main power

cord into the switched AC outlet of your preamplier or receiver. The high

power design of the SI-1650 requires large amounts of current from its AC

power source. Additionally, it is always recommended to activate the system

preamplier/receiver before turning on your SI-1650 in order to prevent system

“turn-on thumps”.

In order to address these important needs, the SI-1650 has three special turn-

on modes that let you turn the amplier on only when it is needed. Use the

Conguration and Setup Tool to access and select one of these three Turn-On

options.

Important! The Front Panel Power Switch must be in the ON (switch in)

position for any of the three turn-on options to function (refer to page 36

for more information concerning the Front Panel Power Switch).

Constant – The auto turn-on circuitry is off. The front panel master power

switch operates the amplier. In is “On”, Out is “Off”.

Audio Sense – The master switch on the front panel must be in the “On”

position. The amplier is off when there is no audio signal present at any of the

audio inputs, but the sensing circuitry is on. The turn-on sensing circuitry looks

for a tiny amount of audio signal present at any of the audio inputs. If it detects

a signal, all the amplier channels will turn on. Once the audio signal stops, the

sensing circuit waits three minutes, then turns all amplier channels off.

FIGURE 18

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California Air Tools 1650A Guide de dépannage Page 28