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Uwe Hoferichter

Pilotone Module

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Hello, I have a ACL camera and an external Eclair Pilotone modules for my Nagra 4.2.
This Pilotone modules makes no pilot tone. To fix it, I need a circuit diagram of Pilotone module.
Has anyone a circuit diagram or a link to the Internet?
Many thanks in advance.

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Hey Uwe,

Why do you use the pilotone? We never did. The camera was accurate and the Nagras had their own pulse generator.


If you find any ACL workshop manuals please let us all know. I have a faded old ACLI owners manual with schematics of the pilotone connections from camera to Nagra if that helps. Probably not.

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Same here - my ACL 1.5 always kept perfect sync. I've recorded audio with a Nagra 4, Tascam DAT and even a cheap handheld digital voice recorder, and all were dead on when synced up.


As long as both devices (camera and audio recorder) have crystal sync, you're good to go.



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