Transmit signal power - How to find from the amplitude set in transmit_path?

Hi,
I want to calculate the power of the signal(in dBm) transmitted in
benchmark_tx.py. The transmit_path sets an amplitude in the range [0,1]
but
how will I convert this into the actual power. I just want to know where
should I be looking in order to calculate it myself.

Thanks,
John

On Sat, Jul 10, 2010 at 8:32 PM, John A. [email protected]
wrote:

Hi,
I want to calculate the power of the signal(in dBm) transmitted in
benchmark_tx.py. The transmit_path sets an amplitude in the range [0,1] but
how will I convert this into the actual power. I just want to know where
should I be looking in order to calculate it myself.

If I were in your situation, I’d calibrate myself with the hardware
under test by first sending out just a carrier and measuring the power
of the carrier on the frequency you wish to test. Use a meter or
scope to do this part.

Then calculate the peak-to-average power ratio of your modulation to
know how much of your signal has to be backed off to maintain
linearity through your RF PA.

Thanks,
John

Good luck.

Brian

you are right but I don’t neither do i have an scope nor a power meter.
Any
other suggestion?

On Thu, Jul 15, 2010 at 6:11 PM, John A. [email protected]
wrote:

you are right but I don’t neither do i have an scope nor a power meter. Any
other suggestion?

Buy a scope and/or an RF power meter.

Brian

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