Hum from AC power at DVinfo.net

Albert Rodgers · May 26th, 2003, 12:42 PM

Hey Guys/Gals,

I need your help. I am using the SignVideo XLR adapter and when I plug the AC power cord from the cam in I get a humming noise. Is there anyway to eliminate this noise and use the AC power (I didn't have this problem with DC)?

Thanks,

Al

Jeff Donald · May 26th, 2003, 02:09 PM

Try another AC power supply, sounds like the one you have may be defective. Have you tried plugging the supply into different outlets?

Rob Easler · May 26th, 2003, 05:39 PM

There is a toggle switch on your adapter that says G1 and G2. Flip that switch and advise if yout still have the problem. If so then you can try a two prong/three prong adapter to eliminate the ground, which should eliminate the noise. This would be at your own risk however. I wouldn't call it a long term solution. Could you have a short in your cable?

Don Palomaki · May 27th, 2003, 03:41 AM

Also, if you have the camcorder connected to something like PC, TV, or other gear (especially consumer gear) while it is on AC power you may encounter a hum depending on the building wiring and the other gear wiring. If this is the case, try disconnecting the other gear.

Also, check the routing of cables. Be sure power leads are not close to or loop around audio leads.

Albert Rodgers · May 28th, 2003, 12:31 AM

Hey Guys,

Thanks for the advice. I will try your suggestions and let you know which one works.

May 26th, 2003, 12:42 PM	#1
Albert Rodgers Regular Crew Join Date: May 2003 Location: Ypsilanti, MI Posts: 87	Hum from AC power Hey Guys/Gals, I need your help. I am using the SignVideo XLR adapter and when I plug the AC power cord from the cam in I get a humming noise. Is there anyway to eliminate this noise and use the AC power (I didn't have this problem with DC)? Thanks, Al __________________ Jack-of-all-trades trying to master one (Videography) www.sdfvideo.com

May 26th, 2003, 02:09 PM	#2
Jeff Donald Warden Join Date: Mar 2002 Location: Clearwater, FL Posts: 8,287	Try another AC power supply, sounds like the one you have may be defective. Have you tried plugging the supply into different outlets? __________________ Jeff Donald Carpe Diem Search DVinfo.net for quick answers \| Where to Buy? From the best in the business: DVinfo.net sponsors

May 27th, 2003, 03:41 AM	#4
Don Palomaki Wrangler Join Date: Sep 2001 Location: Northern VA Posts: 4,488	Also, if you have the camcorder connected to something like PC, TV, or other gear (especially consumer gear) while it is on AC power you may encounter a hum depending on the building wiring and the other gear wiring. If this is the case, try disconnecting the other gear. Also, check the routing of cables. Be sure power leads are not close to or loop around audio leads. __________________ dpalomaki@dspalomaki.com

May 28th, 2003, 12:31 AM	#5
Albert Rodgers Regular Crew Join Date: May 2003 Location: Ypsilanti, MI Posts: 87	Hey Guys, Thanks for the advice. I will try your suggestions and let you know which one works. __________________ Jack-of-all-trades trying to master one (Videography) www.sdfvideo.com

May 26th, 2003, 05:39 PM	#3
Rob Easler Major Player Join Date: Jan 2003 Location: Naperville, IL Posts: 219	There is a toggle switch on your adapter that says G1 and G2. Flip that switch and advise if yout still have the problem. If so then you can try a two prong/three prong adapter to eliminate the ground, which should eliminate the noise. This would be at your own risk however. I wouldn't call it a long term solution. Could you have a short in your cable?