Re: [USRP-users] B200 PPS signal question

2020-11-22 Thread 翁偉吾 via USRP-users
So there is a some difference regarding the clock between b200 and b200mini. At first I thought they are pretty much alike. Anyway, now I understood. Thanks Aaron. On Mon, 23 Nov 2020, 02:42 Aaron Holtzman via USRP-users, < usrp-users@lists.ettus.com> wrote: > On the b200mini, the 1pps actually

Re: [USRP-users] B200 PPS signal question

2020-11-22 Thread Aaron Holtzman via USRP-users
On the b200mini, the 1pps actually *does* steer the internal reference. Which is different behaviour then the rest of the entire Ettus lineup I believe. For details on how it works, see uhd/fpga/usrp3/top/b2xxmini/b205_ref_pll.v. It autodetects the external reference type and applies the

Re: [USRP-users] B200 PPS signal question

2020-11-20 Thread Marcus D. Leech via USRP-users
On 11/20/2020 08:38 AM, 翁偉吾 via USRP-users wrote: Hi, I have a question about the PPS inputs on b200 and b200mini models. I want to synchronize time for two b200 units. I connected the PPS to a external GPS module. The Ref port was left open(Not used). Then I set the system time with

[USRP-users] B200 PPS signal question

2020-11-20 Thread 翁偉吾 via USRP-users
Hi, I have a question about the PPS inputs on b200 and b200mini models. I want to synchronize time for two b200 units. I connected the PPS to a external GPS module. The Ref port was left open(Not used). Then I set the system time with set_time_next_pps command. On another b200, the