How can I check if its balanced output

Pbassred · 8th December 2006, 04:41 PM

I have a music effect which is designed with a TRS jack on the output. However the manual doesn't say that its balanced. I don't own a scope.

How can I check if it is a balanced signal?

Original Burnedfingers · 10th December 2006, 11:52 AM

Hook up to sleeve and tip and you should have signal.
Hook up to sleeve and ring and you should have signal.

If there is only signal at tip and sleeve then its not balanced output.

pinkmouse · 10th December 2006, 12:03 PM

I would guess it's most likely a send/return loop if it's an effects box.

Pbassred · 10th December 2006, 12:14 PM

Thanks pink, but its not that kind of effect. Its definatly output only.
How can I tell that the tip and ring are oposite - i.e. not just the same signal down both? would I get an output from connecting the tip and ring?

pinkmouse · 10th December 2006, 12:15 PM

Possibly stereo out? What's the effect?

AndrewT · 10th December 2006, 12:41 PM

Hi,
measure Vac tip to ring,
then sleeve to ring
and finally sleeve to tip.

Tell us what you get.

Pbassred · 10th December 2006, 01:45 PM

http://www.line6.com/basspodxtlive/

No. It really isn't balanced. Tried the outputs Ring to screen is dead.

AndrewT · 10th December 2006, 02:16 PM

Hi,
It seems they have fitted a TRS plug, just to confuse.

Look inside the unit.
Is the ring disconnected?
If yes, then what about swapping it for a TS plug.

Pbassred · 10th December 2006, 07:26 PM

There is a DI (clean) out and a "Model" (effected) out

http://i76.photobucket.com/albums/j2...tputjacks2.jpg

....................and they're marked Left and Right!

I will take the PCB out over Xmas to see how its connected, but its a bit of a chore. Its no biggie. I have a DI box.

chrispenycate · 11th December 2006, 10:54 PM

Some effects used the fact that a R-T jack was inserted into a TRS socket turned the device on; unplugging it removed the battery connection. Nice ground currents, not to mention the confusion if you feed it into a balanced input.

8th December 2006, 04:41 PM	#1
Pbassred diyAudio Member Join Date: Nov 2003 Location: N London	How can I check if its balanced output I have a music effect which is designed with a TRS jack on the output. However the manual doesn't say that its balanced. I don't own a scope. How can I check if it is a balanced signal? __________________ Jeeees! I only asked www.davethebass.com

10th December 2006, 12:03 PM	#3
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	I would guess it's most likely a send/return loop if it's an effects box. __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

10th December 2006, 12:14 PM	#4
Pbassred diyAudio Member Join Date: Nov 2003 Location: N London	Thanks pink, but its not that kind of effect. Its definatly output only. How can I tell that the tip and ring are oposite - i.e. not just the same signal down both? would I get an output from connecting the tip and ring? __________________ Jeeees! I only asked www.davethebass.com

10th December 2006, 12:15 PM	#5
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	Possibly stereo out? What's the effect? __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

10th December 2006, 12:41 PM	#6
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, measure Vac tip to ring, then sleeve to ring and finally sleeve to tip. Tell us what you get. __________________ regards Andrew T.


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10th December 2006, 11:52 AM	#2
Original Burnedfingers diyAudio Member Join Date: Nov 2002	Hook up to sleeve and tip and you should have signal. Hook up to sleeve and ring and you should have signal. If there is only signal at tip and sleeve then its not balanced output.

10th December 2006, 01:45 PM	#7
Pbassred diyAudio Member Join Date: Nov 2003 Location: N London	http://www.line6.com/basspodxtlive/ No. It really isn't balanced. Tried the outputs Ring to screen is dead. __________________ Jeeees! I only asked www.davethebass.com

10th December 2006, 02:16 PM	#8
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, It seems they have fitted a TRS plug, just to confuse. Look inside the unit. Is the ring disconnected? If yes, then what about swapping it for a TS plug. __________________ regards Andrew T.

10th December 2006, 07:26 PM	#9
Pbassred diyAudio Member Join Date: Nov 2003 Location: N London	There is a DI (clean) out and a "Model" (effected) out http://i76.photobucket.com/albums/j2...tputjacks2.jpg ....................and they're marked Left and Right! I will take the PCB out over Xmas to see how its connected, but its a bit of a chore. Its no biggie. I have a DI box. __________________ Jeeees! I only asked www.davethebass.com

11th December 2006, 10:54 PM	#10
chrispenycate diyAudio Member Join Date: Aug 2006 Location: Geneva, Switzerland	Some effects used the fact that a R-T jack was inserted into a TRS socket turned the device on; unplugging it removed the battery connection. Nice ground currents, not to mention the confusion if you feed it into a balanced input.

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