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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Rigol Connection Problem Linux","articleBody":"Hi,\r\n\r\nI have a problem connecting to a Rigol Ds1054z the first time after the scope has been reset.  Subsequent connects are fine.\r\n\r\nE.g.\r\n* Turn on rigol, connect using USBTMC library FAIL\r\n* Turn on rigol, send some random command with OS driver (echo '*idn?' \u003e\u003e /dev/usbtmc0), connect to rigol using python-usbtmc (hangs), kill python, connect to rigol again using python-usbtmc, WORKS\r\n* Unplug and replug usb cable and connect again using just python usbtmc WORKS\r\n\r\nTurn scope off and on, I have to repeat the weird combination of sending command through kernel driver, running usbtmc python connection script twice.\r\n\r\nAlso, if I turn scope on and off, and run python usbtmc connection, it just hangs indefinitely and detaches the scope from the kernel, so then I have to go replug it.\r\n\r\nOnce I do this weird random fix of sending command through kernel driver, I can use the scope for weeks if I don't turn it off.  Also, the scope takes a while to read data, 24million points takes 5min.\r\n\r\nAny ideas why this could be happening?\r\n\r\nIt's happened on two computers, an Ubuntu and Arch Linux machine.","author":{"url":"https://github.com/jtambasco","@type":"Person","name":"jtambasco"},"datePublished":"2017-11-28T12:25:06.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/43/python-usbtmc/issues/43"}