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A D(u)MM question
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McJim56:
Hi all, and new to the forum shout out to Dave!!
I’ve just found here the Tekronix DMM 4020 and Fluke 8808a are one in the same.
I’ve already (by mistake) purchased Agilent 34401a. It’s a quiet good instrument but doesn’t do exactly what I want. I was looking for dB to watt function.
David @ ElPaso Tube Amps uses his Tek math function to select 2,4,8 ohm across the dummy load for output in watts.
I suppose my question is am I limited to these two models for what I’m trying to accomplish?
Trying to avoid another $300+ mistake.
Thanks in advance
Jim
coromonadalix:
well find a meter who can do that for you and or associated software if they are or have them

normally you buy a wattmeter ... who's in a sense not a multimeter

with an  multimeter you read voltage created on power resistors leads ...   

you use a signal generator at given frequencies and amplitudes and read the amplifier output on the load(s)

and many websites offer the db to watts calculations  ??
bdunham7:

--- Quote from: McJim56 on November 04, 2023, 01:50:27 am ---David @ ElPaso Tube Amps uses his Tek math function to select 2,4,8 ohm across the dummy load for output in watts.

--- End quote ---

Could you explain in detail (step-by-step) how that is managed?

Edit:  I found it in the manual.  Never knew it had that feature!  You can select a secondary display as well, such as ACV or FREQd.

bdunham7:
To answer your actual question, I'm not aware of any other meters with a power function that works this way. 
Kleinstein:
With a programmable math function other meters should be able to provide such an output.  It is still relatively easy to do the math separate and use the voltage reading.
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