Re: [USRP-users] X310 Transmitting Energy on Zero Input

2018-06-14 Thread Marcus D. Leech via USRP-users
On 06/14/2018 04:55 AM, shachar J. brown via USRP-users wrote: Hi All, I've tried the following simple experiment with my brand new X310 (UBX-160 daughterboards): GRC Signal Source -->> Throttle -->> DMA FIFO -->> USRP Radio I assigned ZERO AMPLITUDE to the signa

Re: [USRP-users] X310 Transmitting Energy on Zero Input

2018-06-14 Thread Derek Kozel via USRP-users
Hi Steve, You're seeing LO leakage, a normal effect of transmitters. You can use an lo offset to move the leakage away from your center frequency. http://files.ettus.com/manual/page_general.html#general_tuning_process Since you're using an RFNoC based flow (correct?) you'll need to add the DUC bl

[USRP-users] X310 Transmitting Energy on Zero Input

2018-06-14 Thread shachar J. brown via USRP-users
Hi All, I've tried the following simple experiment with my brand new X310 (UBX-160 daughterboards): GRC Signal Source -->> Throttle -->> DMA FIFO -->> USRP Radio I assigned ZERO AMPLITUDE to the signal source, USRP had central frequency of 1.5 [GHz] and gain of 20. Alt