On Thu, Sep 1, 2016 at 10:30 PM, Joe <t...@joepgen.com> wrote: > > > We use two DMMs UNI-T UT61B. They have two interfaces each, a RS232C > Interface and a USB interface. > The RS232C interfaces work well. Without any command before, the DMMs > continuously send 2 .. 3 packages of 14 Bytes per second. We get them with a > little Python 3.52 script, using PySerial. It's ok. > > But the younger of our computers have no RS232C comports, and I don't want > to use virtual comports. So I try to use the USB interfaces of the DMMs with > PyUSB 1.0, but somethin is wrong with this test script (using Win10 Version > 1607, 64 bit):
You need to check what kind of USB protocol the USB interface uses. Maybe it is also a USB Serial Port and you can use the PySerial. If it is not a USB serial port and you do not know the communication protocol, then you have to carry out reverse engineering. Google seems to say that sigrok supports it. You can try ask there for the protocol. https://sigrok.org/wiki/UNI-T_UT61B -- Xiaofan ------------------------------------------------------------------------------ _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
