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measuring amplifier
PostPosted: Thu Jun 08, 2006 4:18 pm Reply with quote
roellinger
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Joined: 08 Jun 2006
Posts: 11
Location: france




hello i want make some frequency measuring for power amplifier with easera, axys usb
can you help me for the method?
I think the output of my power amplifier is too hight
thank you
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PostPosted: Mon Jun 12, 2006 5:58 pm Reply with quote
Jim Mobley
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Joined: 27 Jul 2005
Posts: 134
Location: Foothill Ranch, California, USA




As the Duran Axys can accept a particularly high input voltage on it's line inputs--25 volts according to the specifications--you can simply feed the output of the Axys to the amplifier's input and then connect the amplifier's output to the line input on the Axys, set levels and measure away. Using Log sweeps you could measure the frequency response at outputs of up to 50 watts @ 8 ohms or so.

If you need to measure at higher voltages, you'd need to construct a voltage divider to keep from over-driving the input of the Axys.

_________________
Best regards,

Jim Mobley
Sr. Application Engineer
Renkus-Heinz, Inc.
19201 Cook St.
Foothill Ranch, CA 92610 USA
TEL: +1-949-588-9997
FAX: +1-949-588-9514
www.renkus-heinz.com
mailto:jim@renkus-heinz.com
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PostPosted: Sun Jun 18, 2006 8:36 am Reply with quote
roellinger
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Joined: 08 Jun 2006
Posts: 11
Location: france




thank you for your reponse
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