# Cannot connect to the system console

**URL:** <https://discuss.px4.io/t/cannot-connect-to-the-system-console/3024>\
**Category:** Uncategorized\
**Created:** [April 13, 2017, 2:11pm UTC](https://discuss.px4.io/t/cannot-connect-to-the-system-console/3024 "2017-04-13T14:11:34Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![phelix6](https://discuss.px4.io/letter_avatar_proxy/v4/letter/p/b77776/32.png) [@phelix6](https://discuss.px4.io/u/phelix6)\
**Post date:** [April 13, 2017, 2:11pm UTC](https://discuss.px4.io/t/cannot-connect-to-the-system-console/3024/1 "2017-04-13T14:11:34Z")

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[Working on mac.  
Pixhawk is connected via FTDI 3.3V Cable.]

I tried to access the system console by typing the following to the terminal:  
screen /dev/tty.usbserial-xxxx 57600 8N1

All I got is a blank screen, with no response to hitting the enter key.

Do I have to do the radio calibration first in the QGroundControl?

Thank you for your attention and time.