Professional audio / entertainment devices 4 pin XLR connector

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Application	Pin 1	Pin 2	Pin 3	Pin 4	Notes
AMX 192	screen (analogue 0V)	clock +	analogue multiplex	clock -
Canford Talkback 1cct headset	Mic earth/scr	Mic signal	Earphones earth/scr	Earphones signal
Clearcom talkback headset	Mic earth/scr	Mic signal	Earphones earth/scr	Earphones signal
Diversitronics (analogue) superstrobes	signal	ground	supply (+ve)	not used
Pyro Pack Control	channel 1	channel 2	channel 3	common
Rosco gobo rotator	Forward A	Reverse A	Forward B	Reverse B
Scroller (generic)	ground	-ve data	+ve data	+24VDC or +48VDC power	NOT Wybron!
Wybron Scroller	+24v DC	-ve data	+ve data	ground	non standard!
dc power of pro broadcast gear	negative	n/c	n/c	positive (+12V)

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Last updated at Mon Aug 6 2007 (�� )	�� ?