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Title: Add an additional Rigol quirk to skip INITIATE_CLEAR by tai · Pull Request #62 · python-ivi/python-usbtmc · GitHub

Open Graph Title: Add an additional Rigol quirk to skip INITIATE_CLEAR by tai · Pull Request #62 · python-ivi/python-usbtmc

X Title: Add an additional Rigol quirk to skip INITIATE_CLEAR by tai · Pull Request #62 · python-ivi/python-usbtmc

Description: Hi. This patch updates usbtmc.py quirk handling to make it work better with Rigol DS1000Z-series oscilloscope (and probably also with DS2000-series). DS1000Z does not handle INITIATE_CLEAR well, and USB response just times out (and hangs) once it receives this message. INITIATE_CLEAR is a required command as per USBTMC spec, but Rigol's implementation is known to be broken in many parts. There's a workaround to do echo *IDN? > /dev/usbtmc to initialize the device without sending INITIATE_CLEAR, but that's Linux-specific and user has to figure out which /dev/usbtmc* device to use. This patch will make things much easier and portable. I have tested this patch with rigolcap.py script I pasted to gist: https://gist.github.com/tai/408053a0955bf1712a5809240aa5544f Also, just FYI, https://github.com/jtambasco/RigolOscilloscope.git which uses python-usbtmc works with Rigol, but has a following hack to make it work: os.system('echo *IDN? >> /dev/%s' % dev[3]) With this patch, user of usbtmc.py can now just do this: tmc = usbtmc.Instrument(0x1ab1, 0x04ce) tmc.write_raw(b'*IDN?')

Open Graph Description: Hi. This patch updates usbtmc.py quirk handling to make it work better with Rigol DS1000Z-series oscilloscope (and probably also with DS2000-series). DS1000Z does not handle INITIATE_CLEAR well, an...

X Description: Hi. This patch updates usbtmc.py quirk handling to make it work better with Rigol DS1000Z-series oscilloscope (and probably also with DS2000-series). DS1000Z does not handle INITIATE_CLEAR well, an...

Opengraph URL: https://github.com/python-ivi/python-usbtmc/pull/62

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