Re: Stream args on UHD USRP Sink

[CEL]

As said, I'm almost certain you can absorb that multiplication in
anything else you're doing already.
On Tue, 2019-12-03 at 21:00 -0300, Wheberth Damascena Dias wrote:
> Yeah, You are right,
> 
> My initial thougth was, UHD already needs to scale whatever comes in to the 
> DAC range. If it could take in account this extra scaling I could save the 
> constant multiplier block.
> 
> Best Regards.
> 
> Em ter, 3 de dez de 2019 15:24, Müller, Marcus (CEL) <address@hidden> 
> escreveu:
> > I'd recommend not overestimating the workload of scaling outside of UHD
> > – UHD still has to do that multiplication! So, scaling e.g. your
> > constellation or your pulse-shaping filter would make at least as much
> > sense. 
> > 
> > On Tue, 2019-12-03 at 14:11 -0300, Wheberth Damascena Dias wrote:
> > > Hi Marcus, I
> > > 
> > > I am planning to give a try to the GnuRadio 3.8 PPA. We are developing 
> > > some OOT blocks and some rework may be needed to do so.
> > > 
> > > I will take a look at the code, but I am inclined to change my 
> > > application to eliminate the need of scaling in real time (scalling the 
> > > QAM symbols for example)
> > > 
> > > Regarding the USRP I am using a pair of X310.
> > > 
> > > Thank you very much.
> > > Wheberth
> > > 
> > > 
> > > Em ter, 3 de dez de 2019 13:26, Müller, Marcus (CEL) <address@hidden> 
> > > escreveu:
> > > > Uhhhh that's an ancient version of GNU Radio. Do you use any other UHD-
> > > > linking software, or can you try our new PPA that would give you a
> > > > modern GNU Radio 3.8.0.0?
> > > > 
> > > > https://launchpad.net/~gnuradio/+archive/ubuntu/gnuradio-releases
> > > > 
> > > > Anyway, for most USRPs "fullscale" actually should do some scaling (if
> > > > you're so inclined, look for "_host_extra_scaling" in the UHD source
> > > > code).
> > > > 
> > > > What is the USRP you're using?
> > > > 
> > > > Best regards,
> > > > Marcus
> > > > 
> > > > On Tue, 2019-12-03 at 08:41 -0300, Wheberth Damascena Dias wrote:
> > > > > Hi all, not sure if I should send this here or at USRP list.
> > > > > 
> > > > > I am trying to set the "fullscale" as a stream parameter of the USRP 
> > > > > Sink block, but it have no effect. The idea is to avoid the use aof 
> > > > > one block to scale the samples to [-1.0, +1.0] range May I be missing 
> > > > > something?
> > > > > 
> > > > > For reference I am using GnuRadio 3.7.11 with libuhd 3.10.3 (All 
> > > > > stock from Ubuntu 18.04).
> > > > > Thank you very 
> > > > > 
> > > > > 
> > > > > 
> > > > > -- 
> > > > > Wheberth Damascena Dias
> > > > > _______________ _____ _____ __ ___ __ _ _ _  _ 
> > > > > http://www.linkedin.com/in/wheberth
> > > > > e-mail:address@hidden
> > > > >

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