[ERROR] IMU_node (help-me)

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Hello guys, I'm trying to use the imu_node , but by following the tutorial contained herein : http://wiki.ros.org/microstrain_3dmgx... , I encounter the following message:

[ ERROR] [ 1448558982.111227055 ] : Device / dev / ttyUSB0 is already locked . Try ' lsof | grep / dev / ttyUSB0 'to find other processes que currently have the port open . (in microstrain_3dmgx2_imu :: IMU : OpenPort ) You may find further details at http://www.ros.org/wiki/microstrain_3dmgx2_imu/Troubleshooting .

I've tried several exits , but it still fails. Algem could give me some way ?

Inertia-Link and 3DM-GX2 sensor.

Edit: Hello, thank you for responding. I've tried you-plugging the device. How could I kill a process? Is there any way to choose the input the turns on? That would solve?

when I do lsof|grep /dev/ttyUSB0, i received this information:

rafael@rafael-pc:~$ lsof|grep /dev/ttyUSB0
imu_node  21051           rafael    9uW     CHR              188,0      0t0  5244268 /dev/ttyUSB0
imu_node  21051 21060     rafael    9uW     CHR              188,0      0t0  5244268 /dev/ttyUSB0
imu_node  21051 21061     rafael    9uW     CHR              188,0      0t0  5244268 /dev/ttyUSB0
imu_node  21051 21062     rafael    9uW     CHR              188,0      0t0  5244268 /dev/ttyUSB0
imu_node  21051 21067     rafael    9uW     CHR              188,0      0t0  5244268 /dev/ttyUSB0

Thank you very much!

UPDATE:

Now I see that there are no processes using the port. The other possible reason is given: "This sometimes happens if you are not connected to an IMU". The USB Base Station is connected to the USB port and the sensor is also connected (but not in pc), have to do something else? I do not understand the error, since there are not processes trying to use the port. Thank you!

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