balanced line measurments - Electronic Circuits Projects Diagrams Free

Othello · 3rd January 2007, 04:25 PM

I just had to measure the audio voltage on a balanced line and suddenly wondered how do you do that???

I guess I am so used to measure one line to the ground reference.

I did measure the signal between the two lines and left the shield alone, but I just wanted to ask the question to make sure I didn't make a silly mistake.

Uwe

**Nigel Goodwin** · 3rd January 2007, 04:43 PM

You could use a scope in differential mode - one input on each line, and the ground to shield.

Othello · 3rd January 2007, 04:51 PM

Yeah, but the question is what do I measure.

If a line amplifier calls for a certain output level, by what method should that be determined. My scope is not the most precise device for measuring voltages, for that I do prefer my HP AC RMS voltage meter

Uwe

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3rd January 2007, 04:25 PM	(permalink)
Othello	balanced line measurments I just had to measure the audio voltage on a balanced line and suddenly wondered how do you do that??? I guess I am so used to measure one line to the ground reference. I did measure the signal between the two lines and left the shield alone, but I just wanted to ask the question to make sure I didn't make a silly mistake. Uwe

3rd January 2007, 04:43 PM	(permalink)
Nigel Goodwin	You could use a scope in differential mode - one input on each line, and the ground to shield. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

3rd January 2007, 04:51 PM	(permalink)
Othello	Yeah, but the question is what do I measure. If a line amplifier calls for a certain output level, by what method should that be determined. My scope is not the most precise device for measuring voltages, for that I do prefer my HP AC RMS voltage meter Uwe