On Fri, Jul 22, 2005 at 05:11:35PM -0700, Eric Blossom wrote:
> On Sat, Jul 23, 2005 at 04:35:05AM +0500, Ahmad Sheikh wrote:
> >
> > But using usrp.source_c().set_pga() means that the feedback control
> > be on the python level, which would mean that there would be a large
> > latency in the gain
On Sat, Jul 23, 2005 at 04:35:05AM +0500, Ahmad Sheikh wrote:
>
> But using usrp.source_c().set_pga() means that the feedback control
> be on the python level, which would mean that there would be a large
> latency in the gain control. Isn't there some way to do this on the
> hardware?
> -Ahmad
Th
Hi, Eric
Would you please iterate more on the concept of PGA?
I don't understand it quite well. Is it just an
amplifier after the ADC, so that the 16-bit signed
integer is multiplied by the value of pga? Or, let's
say the pga is 10, is it true that the p-p value of
the adc is not 1V--1V, but 0.1
On Tue, Jul 19, 2005 at 11:13:31AM -0700, Sachi wrote:
> Hi, Eric
>
> Would you please iterate more on the concept of PGA?
It's an analog amplifier with a software controllable gain.
On the Rx path it has steps of 1.0 dB.
On the Tx path, the steps are 0.1 dB.
See the AD9862 datasheet for deta
On Tue, Jul 19, 2005 at 06:08:27AM +0500, Ahmad Sheikh wrote:
> The USRP user guide states that there is 20 db of gain on the
> USRP. Assuming that this is on the Receive path Programmable Gain
> Amplifier on the MxFE, can this be used as an AGC?
Yes.
> I want to control the strength of the sign
The USRP user guide states that there is 20 db of gain on the USRP. Assuming
that this is on the Receive path Programmable Gain Amplifier on the MxFE, can
this be used as an AGC? I want to control the strength of the signal received.
The way to do this, I think, would be to dynamically alter the
