On 2021-12-06 00:13, zeyuan...@zengyi-tech.com wrote:
Hi Marcus,
I use a signal source output a tone at 5GHz .And I use N310 External
LO mode,it received signal at 2.5GHz.
But I try to change LO Source to another frequency such as 4GHz.In
this situation, the center frequency remain at 2.5GHz but not half of
4GHz.
I want to know what should I do when I try to change center frequency
in External LO mode?
Are you using external LO for TX or RX?
Perhaps you can share the code you're using to configure for external LO?
谢谢，有任何问题请随时与我联系！
——————————————————————
李泽远|研发工程师
北京曾益科技有限公司
手机：13121162044
地址：北京市海淀区中关村大街中关村SOHO 1108
网址：_www.zengyi-tech.com <http://www.zengyi-tech.com>_
*发件人:*Michael Dickens <michael.dick...@ettus.com>
*发送时间:*2021年10月27日22:06
*收件人:*Marcus D. Leech <patchvonbr...@gmail.com>
*抄送:*李泽远<zeyuan...@zengyi-tech.com>; USRP list
<usrp-users@lists.ettus.com>
*主题:*[USRP-users] Re: 答复: Re: 答复: 答复: Re: 答复: Re: How to use
External LO on N310 device?
Forgot to mention earlier: at device initialization you have to supply
the external LO at 5 GHz,
as well as set the device argument as noted. Once the device is fully
initialized then you can
change the center frequency & the supplied LO must be 2x that. Hope
this helps! - MLD
On Wed, Oct 27, 2021 at 9:51 AM Marcus D. Leech
<patchvonbr...@gmail.com> wrote:
On 2021-10-27 03:11, zeyuan...@zengyi-tech.com wrote:
I set the correct device arguments,but it doesn’t work
correctly and also there is no error report.
I don’t what can I do next .
So I want to config this argument in mpm.conf file or
usrp_hwd.conf file to try to use external LO .
I couldn’t find this file named "usrp-hwd.conf" in “/usr” .and
also “mpm.conf”
Again, modifying the MPM config file is NOT necessary to get
external LO to work.
What frequency are you trying to use?
Can you share the lines of code you use to set up the N310 for
shared LO operation--including the initial device "make" with
device arguments, etc.
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