Re: [USRP-users] PPS and REF out form a X310 and leakage problem

2017-08-18 Thread Jorge Chen via USRP-users
Dear Derek First of all, I feel sorry that I write you back so late, cuz I went to a conference these days and was not able to do the experiments. 1. The Octoclock I have is the one needs external source. 2. Just to clarify, "The X310 will always output it's signals so can still be used as the s

Re: [USRP-users] PPS and REF out form a X310 and leakage problem

2017-08-18 Thread Jorge Chen via USRP-users
Dear Derek First of all, I feel sorry that I write you back so late, cuz I went to a conference these days and was not able to do the experiments. 1. The Octoclock I have is the one needs external source. 2. Just to clarify, "The X310 will always output it's signals so can still be used as the s

Re: [USRP-users] PPS and REF out form a X310 and leakage problem

2017-08-07 Thread Derek Kozel via USRP-users
Hello Jorge, The Octoclock is sold in two versions, one with an internal GPSDO and one that requires an external source. The X310 and X300 both do not support daisy chaining. There are a few issues with it, one of the key ones being propagation delay. If the 1PPS signal was passed from one unit t

[USRP-users] PPS and REF out form a X310 and leakage problem

2017-08-07 Thread Jorge Chen via USRP-users
Hi all I’d like to build up 8X8 MIMO system using 4 USRP X310. To synchronize time&freq. between all of them, I used to use a function generator to feed both 1 PPS and 10 MHz reference clock to them. Today, I got an Octoclock which I thought it is able to provide both synchronization signal, b