Hi,
I am a new student and trying to to measure the power and voltage output from B200 SDR device (https://www.ettus.com/content/files/b200-b210_spec_sheet.pdf) using oscilloscope (TDS3000 Series: https://www.atecorp.com/ATECorp/media/pdfs/data-sheets/Tektronix-TDS3000_Series_Manual.pdf)...
@Mark44: that could be, i am happy if some very small decimal number exist (my expectation in nano or pico values) but is there any way to detect them (if they are exist), even I used command format long and still do not see any change.
@berkeman: if I shift right by 4 places instead of using the multiplication, I will have what I want, that is vector [1 1 1 1], that is no surprise, but the thing I am working on is very small number (in nano values 1e-9) and sometime MATLAB gives me a vector, example: a = 1.0e-04*[ 1 1 1 1]...
I have 2 vectors:
a = 1.0e-04*[0.110000000000000 0.140000000000000 0.140000000000000 0.140000000000000];
b = [0.000011000000000 0.000014000000000 0.000014000000000 0.000014000000000];
by look at by eyes, it seems similar; but when I use this command:
a == b
then I got...
I have Ettus B210 and trying to add 1 line configuration file "/etc/security/limits.conf" which will allow UHD drive to set priority.
So , I typed this command to edit file: gksudo gedit /etc/security/limits.conf and add:
#@student hard nproc 20
#@faculty soft...
Did I do right? make sense to you? please fix me!
https://www.dropbox.com/s/le4ppw32l4sp5ll/RX1.dat?...
https://www.dropbox.com/s/zr04pff9skeh8cn/TX.dat?d...
clear all;
close all;
format long;
%% initial values:
nsamps = inf;
nstart = 0;
Fs = 8e6; % sample rate 8MHz...
@FactChecker: yes, I am using the rubidium clock the time synchronized by interrupt (http://www.thinksrs.com/products/PRS10.htm) and 1 set on the TX and another on set on the RX. the accuracy of it is 5e-11s
they are not the same value, because of noise added due to signal bouncing in the lab, the amplitude of the TX data bigger than RX data 30 times. original length of TX data is about 208000, but the length of RX data is 800000, therefore after the Transmitted real TX data, and the rest of time in...
@FactChecker: Sorry for lacking of knowledge, but I thought the calculations were wrong. you also helped me know more the way to debug the problem. I appreciated for it.
Consider I have this question "how much accuracy you have in the timing?" as you mentioned. Fix me if I state: "an...
@FactChecker: very helpful, even I am still trying to understand the meaning of MAXLAG.
but 1 thing I also thinking of, that is: the professor is asking to find the interpolated maximum of xcorr rather than max sample location. So, the continuous signal is difference from computed sample peak...
I just discussed with the professor, he also mentioned the expectation for the delay will be 3ns or better (less than 1m).
I do not have continue function, I just have function of the sample time (sample waveform different to the continuous of time waveform)
I am taking sample number of delay...
Yes, I did. I already tried with 1 second of data, and still give me the same delay in microsecond, I know the algorithm which I posted, was wrong and I am still trying to figure out the way to get in nanosecond. According to this link which I am following...