Protection Features
Turn-On/Turn-Off Protection
At
RAMPUP™ Signal Control
Whenever a PV® 3800 amplifier powers up or comes out of a protect mode, the RAMPUP circuit activates. While the speakers are disconnected, the RAMPUP circuit fully attenuates the signal and activates the DDT LED. After the output relay closes, the signal slowly and gradually raises to its set level. The PWR LED will illuminate and the DDT LED will turn off when the signal is no longer attenuated. The RAMPUP Signal Control circuit has some important advantages over conventional
1.If a signal is present during
2.Because the gain is reduced until after the output relay closes, no arcing occurs at the contacts. This extends the contacts’ useful life.
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