Experimental Physics and
Industrial Control System

I am trying to communicate with a Tektronix oscilloscope TDS 210 using a GPIB-USB-HS adapter of National Instruments. My system is Ubuntu 14.04.3 where I installed linux-gpib as described in this link: Linux GPIB Driver package (source) and also python-gpib. I reconfigured the /etc/gpib.conf like this:

interface {
    minor = 0   /* board index, minor = 0 uses /dev/gpib0, minor = 1 uses /dev/gpib1, etc. */
    board_type = "ni_usb_b" /* type of interface board being used */
    name = "tds"    /* optional name, allows you to get a board descriptor using ibfind() */
    pad = 0 /* primary address of interface             */
    sad = 0 /* secondary address of interface           */
    master = yes    /* interface board is system controller */
    timeout = TNONE /* timeout for commands */
}
device {
       minor = 0
       name = "ATTN"
       pad = 0
       sad = 0
}

The lsmod give me this:

$ lsmod | grep gpib
ni_usb_gpib            36515  1 
gpib_common            38274  3 ni_usb_gpib

The dmesg:

$ dmesg | grep gpib
[ 2173.992039] ni_usb_gpib driver loadingni_usb_gpib: probe succeeded for path: usb-0000:00:1a.0-1.2
[ 2173.992098] usbcore: registered new interface driver ni_usb_gpib
[ 2173.992102] gpib: registered ni_usb_b interface
[ 2173.995077] ni_usb_gpib: attach

But when a try to communicate with the oscilloscope using ibtest I receive this error:

gpib status is: 
ibsta = 0x8100  < ERR CMPL >
iberr= 0
EDVR 0: OS error
ibcnt = 25

And with Python:

import Gpib
tds = Gpib.Gpib(0,0)
tds.write("*IDN?")
---------------------------------------------------------------------------
GpibError                                 Traceback (most recent call last)
<ipython-input-4-e61e6a76ac49> in <module>()
      1 import Gpib
      2 inst = Gpib.Gpib(0,0)
----> 3 inst.write("*IDN?")

/usr/local/lib/python2.7/dist-packages/Gpib.pyc in write(self, str)
     47 
     48         def write(self,str):
---> 49                 gpib.write(self.id, str)
     50 
     51         def write_async(self,str):

GpibError: write() error: Inappropriate ioctl for device (errno: 25)