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” 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: Marcus D. Leech <patchvonbr...@gmail.com> 发送时间: 2021年10月27日 11:21 收件人: zeyuan...@zengyi-tech.com; usrp-users@lists.ettus.com 主题: [USRP-users] Re: 答复: 答复: Re: 答复: Re: How to use External LO on N310 device? On 2021-10-26 23:14, zeyuan...@zengyi-tech.com <mailto:zeyuan...@zengyi-tech.com> wrote: Excuse,could you tell me where can I find mpm.conf file in N310 system file ? You absolutely shouldn't need to modify the MPM configuration to use external LO. I don't happen to know off the top of my head, but it gets started as usrp-hwd by systemd. Find /usr -name "usrp-hwd.conf" when you're logged in to it should find it. But, I must emphasize AGAIN. To use external LO, you don't need to modify MPMs configuration at all. You just need the correct device arguments when you're creating the USRP device within your application. 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: Marcus D. Leech <mailto:patchvonbr...@gmail.com> <patchvonbr...@gmail.com> 发送时间: 2021年10月26日 22:49 收件人: zeyuan...@zengyi-tech.com <mailto:zeyuan...@zengyi-tech.com> ; usrp-users@lists.ettus.com <mailto:usrp-users@lists.ettus.com> 主题: Re: 答复: [USRP-users] Re: 答复: Re: How to use External LO on N310 device? On 2021-10-26 00:09, zeyuan...@zengyi-tech.com <mailto:zeyuan...@zengyi-tech.com> wrote: Do you mean that I need to change MPM config files, and than reboot the N310 ? Does the N310 LO source will be changed to external when I complete these above steps ? No, you don't have to reconfigure MPM. But look at the table of device arguments--there's a 'rx_lo_source' argument that must be set to "external". This is what Michael Dickens was talking about in his reply to you yesterday. If this still doesn't work, please share with us the pieces of code that you are using to set-up external LO ,so that we might spot any errors in that code. 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: Marcus D. Leech <mailto:patchvonbr...@gmail.com> <patchvonbr...@gmail.com> 发送时间: 2021年10月26日 11:40 收件人: zeyuan...@zengyi-tech.com <mailto:zeyuan...@zengyi-tech.com> ; usrp-users@lists.ettus.com <mailto:usrp-users@lists.ettus.com> 主题: [USRP-users] Re: 答复: Re: How to use External LO on N310 device? On 2021-10-25 22:22, zeyuan...@zengyi-tech.com <mailto:zeyuan...@zengyi-tech.com> wrote: I used TWICE frequency. But it doesn’t work. Have you tried successfully already? Spend some time with the online documentation for the N310 here: https://files.ettus.com/manual/page_usrp_n3xx.html#n3xx_usage There are device arguments you must pass to get the external LO to work.
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