Hi everyone,
To synchronize two USRPs, I connect them and add the following code in
the slave USRP. ---
set_clock_source( 'MIMO',0);
set_time_source('MIMO',0);
---
I have got that the length of MIMO cable is fixed because the cable
delay is co
USRP2 arch, if I remember correctly.
On 26.11.2013 13:04, Harry Zhang wrote:
Hi,
Since we can get receive time of rx_stream's first sample via rx tags, I
have two questions about the time granularity. Given the internal clock
is 10Mhz, is the time granularity 0.1us? The fractional second is s
Hi,
Since we can get receive time of rx_stream's first sample via rx tags, I
have two questions about the time granularity. Given the internal clock
is 10Mhz, is the time granularity 0.1us? The fractional second is stored
double type. Does it mean the last digits of the fractional sec are invalid?
de B and C, right? You should not
observe anything like that if you do not have dropped packets. Are you
using USRP2's?
Miklos
On Sat, Nov 2, 2013 at 3:05 AM, Harry Zhang wrote:
Tom,
Thanks for your reply.
I got a weird problem when using rx_time tags. I have three nodes, node
A s
me some advice. Thank you in advance.
Harry
2013/11/1 22:26, Tom Rondeau wrote:
On Thu, Oct 31, 2013 at 3:46 AM, Harry Zhang wrote:
Hi,
As far as I know rx_time tag is associated with the first sample of a
receive stream. If I wanna get multiple rx_time tags while receiving
continuous data, sh
Hi,
As far as I know rx_time tag is associated with the first sample of a
receive stream. If I wanna get multiple rx_time tags while receiving
continuous data, should I stop and issue a new stream again and again
for getting more rx_time tags.
Thank you.
___
lem?
Thanks in advance.
Best Regard,
Harry
2013/10/16 20:20, Miklos Maroti wrote:
Hi Harry,
On Sat, Oct 12, 2013 at 3:12 PM, Harry Zhang wrote:
Dear Miklos,
Thank you for your inspiring reply.
1.I do think this method sounds like a receiver-receiver sync while sync
message'
gets a little trickier, and I think there is some bug in the
FPGA hardware to cause very rarely one sample shift between the TX and
RX chain. I am not absolutely sure about this, but I could not explain
something in any other way.
Best,
Miklos
On Sat, Oct 12, 2013 at 10:10 AM, Harry Zhang wrote:
tx and rx chains of a single usrp.
Miklos
On Thu, Oct 10, 2013 at 3:51 PM, Harry Zhang wrote:
Hi,
I have implemented time synchronization between two USRPs without GPSDO,
MIMO cable or referring to computer's time.It's a sender-receiver method
based on message exchange. It will be incl
Hi,
I have implemented time synchronization between two USRPs without GPSDO,
MIMO cable or referring to computer's time.It's a sender-receiver method
based on message exchange. It will be included in my next paper soon.
I use the tx_time and tx_sob tag to transmit the message at the planned
time. W
于 2013/9/19 21:56, Tom Rondeau 写道:
On Wed, Sep 18, 2013 at 11:32 PM, Harry Zhang wrote:
Hi,
My last question
(http://lists.gnu.org/archive/html/discuss-gnuradio/2013-09/msg00196.html)
seems no answer.But I get another question.
I wanna know the actual receive time of a sample. If I get the rx
Hi,
My last question
(http://lists.gnu.org/archive/html/discuss-gnuradio/2013-09/msg00196.html)
seems no answer.But I get another question.
I wanna know the actual receive time of a sample. If I get the rx
tag(sample count 100), I can calculate the any sample's receive time.
For example,sample 1600
Hi everyone,
I wanna send data at desired time with USRP N210. The codes look like these
-
int num=1;
pmt::pmt_t key = pmt::pmt_string_to_symbol("sob");
uint64_t offset = this->nitems_written(0);
pmt::pmt_t value = pmt::pmt_make_tuple(
pmt
Hi,
I'm trying to get rx time tags in narrowband Benchmark_tx/rx with a
modified digital_correlate_access_code.cc. But the
"get_tags_in_range(rx_time_tags,0,this->nitems_read(0)+i,this->nitems_read(0)+i+1,pmt::pmt_string_to_symbol("rx_time"))"
method gets no tag in rx_time_tags while the communica
Dear Josh,
I have checked the cmake output and gr_uhd is within the enabled
components. I'm using Ubuntu12.04 and boost 1.48.
2013/8/3 11:39, Josh Blum wrote:
On 08/02/2013 06:32 AM, Marcus Müller wrote:
Hi Harry Zhang,
UHD in general not related to GRAS.
I don't know ei
Hi,
I install the GRAS. But I can't find the UHD status block or UHD control
block in GRC. How can I use them? Is there any example about using UHD
control block?
Thanks in advance.
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
https://lists
,
I have tried the method in the URL but it does not work. The error
remains.
2013/7/30 10:58, Nathan West wrote:
On Mon, Jul 29, 2013 at 10:44 PM, Harry Zhang wrote:
Hi,
I'm using Ubuntu 12.04 and libboost1.46. I got the following errors
when
I make the project.
libboost1.
Hi,
I'm using Ubuntu 12.04 and libboost1.46. I got the following errors
when I make the project.
[ 85%] Building CXX object
gr-uhd/examples/c++/CMakeFiles/tags_demo.dir/tags_demo.cc.o
Linking CXX executable tags_demo
/usr/bin/ld: warning: libboost_date_time.so.1.40.0, needed by
/usr/loca
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