uhd

------------------------------------------------------------------------

Change USB transfer parameters

------------------------------------------------------------------------

The advanced user may manipulate parameters of the usb bulk transfers

for various reasons, such as lowering latency or increasing buffer size.

By default, the UHD will use values for these parameters

that are known to perform well on a variety of systems.

The following device address can be used to manipulate USB bulk transfers:

* **recv_xfer_size:** the size of each receive bulk transfer in bytes

* **recv_num_xfers:** the number of simultaneous receive bulk transfers

* **send_xfer_size:** the size of each send bulk transfer in bytes

* **send_num_xfers:** the number of simultaneous send bulk transfers

Example, set the args string to the following:

::

    serial=12345678, recv_num_xfers=16

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Install libusb driver on Windows

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

On Windows, a driver must be installed the first time the USRP1 is attached to the host computer.

A download link for this driver can be found on the Ettus Research UHD wiki page.

Download and unpack the driver, and direct the Windows driver install wizard to the *.inf file.