On 09/08/2014 11:13 PM, zealdeal wrote:
Thanks for the info. Can anybody please confirm whether the step size limit
of 0.5 dB is valid for USRP N200?
It's not the underlying motherboard, it's the daughter-cards. I think
all of WBX, SBX and CBX use a step attenuator with 0.5dB step size.
Others, I'm not sure about.
Generally, the "analog stuff" is on the daughtercards, and gain-setting
is definitely "analog stuff".
If you need fine-grained control over output power, you can vary the
magnitude of your baseband signals, where you have much-finer
control available. Although, I have to admit that, except for
certain laboratory experiments, power-control beyond 0.5dB granularity
is of very little use in any practical sense.
--
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