Film-Tech Forum ARCHIVE: Is Dolby CP500 Aux input 0.388V rms or pk-pk?

This is topic Is Dolby CP500 Aux input 0.388V rms or pk-pk? in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.

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Posted by Gary A. Hoselton (Member # 3447) on 05-18-2017, 02:26 PM:

Am marrying MPU to CP500, with STA-1 stick-on line amplifiers between to increase Cat 92 outputs to what CP500 Accessory Rack Analog Connector pins 15-19 want. Footnote says Dolby Level is 0.388mV at those pins. Is that rms voltage, as a voltmeter would measure, or pk-pk as I see on my oscilloscope? While running 1kH test loop, will that voltage produce Dolby level in auditorium at Fader setting of 7? Thanks, Gary

Posted by Steve Guttag (Member # 268) on 05-18-2017, 06:40 PM:

RMS sine wave.

Posted by Tim Androes (Member # 9010) on 05-21-2017, 01:09 AM:

0.388mV or 388mV?

Posted by Sam D. Chavez (Member # 1841) on 05-21-2017, 01:27 AM:

388 mVolts or .388 Volts.

Posted by Gary A. Hoselton (Member # 3447) on 05-23-2017, 06:01 PM:

Thanks, Sam. 388mV is what I intended to write.