{"action":"created","issue":{"url":"https://api.github.com/repos/kpreid/shinysdr/issues/54","repository_url":"https://api.github.com/repos/kpreid/shinysdr","labels_url":"https://api.github.com/repos/kpreid/shinysdr/issues/54/labels{/name}","comments_url":"https://api.github.com/repos/kpreid/shinysdr/issues/54/comments","events_url":"https://api.github.com/repos/kpreid/shinysdr/issues/54/events","html_url":"https://github.com/kpreid/shinysdr/issues/54","id":185752837,"number":54,"title":"Audio under-run with USRP N200","user":{"login":"mehdideveloper","id":12119776,"avatar_url":"https://avatars.githubusercontent.com/u/12119776?v=3","gravatar_id":"","url":"https://api.github.com/users/mehdideveloper","html_url":"https://github.com/mehdideveloper","followers_url":"https://api.github.com/users/mehdideveloper/followers","following_url":"https://api.github.com/users/mehdideveloper/following{/other_user}","gists_url":"https://api.github.com/users/mehdideveloper/gists{/gist_id}","starred_url":"https://api.github.com/users/mehdideveloper/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mehdideveloper/subscriptions","organizations_url":"https://api.github.com/users/mehdideveloper/orgs","repos_url":"https://api.github.com/users/mehdideveloper/repos","events_url":"https://api.github.com/users/mehdideveloper/events{/privacy}","received_events_url":"https://api.github.com/users/mehdideveloper/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":2,"created_at":"2016-10-27T19:01:07Z","updated_at":"2016-10-27T19:56:03Z","closed_at":"2016-10-27T19:56:03Z","body":"Hi\r\nI'm using the latest shinysdr on OS X 10.12.1\r\nIt runs fine with RTL-SDR, but not with USRP N200. I have audio underrun and glitch. Also, there's no spectrum waterfall.\r\nHere's a comparison between running RTL-SDR and USRP:\r\nhttps://i.imgsafe.org/24f30d9aa4.png\r\nhttps://i.imgsafe.org/24f2f9d786.png\r\n\r\nAny ideas?\r\n\r\nMy system info:\r\nMacBook Pro 2015 on OS X 10.12.1\r\nPython 2.7.11\r\nshinysdr and gr-osmosdr: from git, latest.\r\nGNURadio 3.7.9.1\r\nChrom version 52\r\nUSRP's device string in config: \r\n`config.devices.add(u'osmo', OsmoSDRDevice('uhd', sample_rate=250000))`\r\n\r\n"},"comment":{"url":"https://api.github.com/repos/kpreid/shinysdr/issues/comments/256751633","html_url":"https://github.com/kpreid/shinysdr/issues/54#issuecomment-256751633","issue_url":"https://api.github.com/repos/kpreid/shinysdr/issues/54","id":256751633,"user":{"login":"kpreid","id":779501,"avatar_url":"https://avatars.githubusercontent.com/u/779501?v=3","gravatar_id":"","url":"https://api.github.com/users/kpreid","html_url":"https://github.com/kpreid","followers_url":"https://api.github.com/users/kpreid/followers","following_url":"https://api.github.com/users/kpreid/following{/other_user}","gists_url":"https://api.github.com/users/kpreid/gists{/gist_id}","starred_url":"https://api.github.com/users/kpreid/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kpreid/subscriptions","organizations_url":"https://api.github.com/users/kpreid/orgs","repos_url":"https://api.github.com/users/kpreid/repos","events_url":"https://api.github.com/users/kpreid/events{/privacy}","received_events_url":"https://api.github.com/users/kpreid/received_events","type":"User","site_admin":false},"created_at":"2016-10-27T19:56:02Z","updated_at":"2016-10-27T19:56:02Z","body":"OK, so that is probably the same as #51. It's a weird bug, and I haven't gotten around to digging into it yet.\r\n\r\nYour waterfall display is working normally — it is just out of range, because the USRP's signal is at a different level than the RTL-SDR's. I can see some small peaks and faint blue in the screenshot. Click on the “Options” at the top right and adjust “Lowest value” until you can see the spectrum."}}
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