rf1008
Full Member level 2
I have a question on RF Signal Generator.
When i setup the CW output at one frequency,the RF level defined manually is just the output power in dBm. BUT when i setup the modulated RF signal at the same frequency,for instance, 1GHz signal modulated by 40KHz squarewave signal with OOK modulation,40KHz squarewave has 50% duty cycle. My question is whether the actual output power is still equal to the RF level defined manually on the screen?
or the actual output power of the modulated RF signal needs to subtract 3dB result from 50% duty cycle of the OOK modulation? What about when the duty cycle is not defined?
Another, how to measure the modulated RF signal power?I think the result is not reliable from Zero-span screen by spectrum analyzer. Is RF power meter the best method? But it needs the correct trigger for modulated signal measurement.
I need your advice, please.. Thanks a lot!
When i setup the CW output at one frequency,the RF level defined manually is just the output power in dBm. BUT when i setup the modulated RF signal at the same frequency,for instance, 1GHz signal modulated by 40KHz squarewave signal with OOK modulation,40KHz squarewave has 50% duty cycle. My question is whether the actual output power is still equal to the RF level defined manually on the screen?
or the actual output power of the modulated RF signal needs to subtract 3dB result from 50% duty cycle of the OOK modulation? What about when the duty cycle is not defined?
Another, how to measure the modulated RF signal power?I think the result is not reliable from Zero-span screen by spectrum analyzer. Is RF power meter the best method? But it needs the correct trigger for modulated signal measurement.
I need your advice, please.. Thanks a lot!