Hi Ali, >power is very less... Of course, since power is proportional to amplitude squared. Obviously, if you try to drive an DAC with more than it's maximum amplitude, you will get clipping. This is a nonlinear thing and has very bad effects on your spectrum, and that's why you usually avoid it.
Greetings, On 05.06.2014 10:01, jason sam wrote: > What will happen if i exceed this limit?Actually with this amplitude the TX > power is very less...Is there any other solution? > > > On Thu, Jun 5, 2014 at 12:54 PM, Martin Braun <[email protected]> > wrote: > >> On 05.06.2014 05:17, jason sam wrote: >> >>> Hi Tom, >>> Can you tell what is the constraint for USRP B210? >>> >> Stay *well* within +/-1. >> >> M >> >>> >>> On Thu, Jun 5, 2014 at 8:13 AM, Tom McDermott <[email protected] >>> <mailto:[email protected]>> wrote: >>> >>> Hi Ali - some sinks care about the amplitude, and others do not. >>> >>> For example, the instruments built into gnuradio (Scope, Frequency >>> display, etc.) can examine a signal of almost any amplitude within >>> floating-point range because you can adjust the display scale factor. >>> >>> However other sinks, such as a physical transmitter (USRP, HPSDR, >>> etc.) are constrained in the amplitude that they can accept. >>> Normally this must be less than one, and hitting or exceeding 1.00 >>> (even just on the peak) can cause problems. Also a physical >>> transmitter might have only 12 or 16 bits fixed point dynamic range, >>> so there may be a minimum signal amplitude as well. >>> >>> -- Tom, N5EG >>> >>> >>> >>> >>> On Wed, Jun 4, 2014 at 7:33 PM, jason sam <[email protected] >>> <mailto:[email protected]>> wrote: >>> >>> Hi, >>> In GRC is it necessary that we give a signal to any sink having >>> an amplitude greater than 1? >>> Regards, >>> Ali >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> [email protected] <mailto:[email protected]> >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >>> >>> >>> >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> [email protected] >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >>> >> _______________________________________________ >> Discuss-gnuradio mailing list >> [email protected] >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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