Hi Gautum,
This should by possible as the novation impulse 49 is just a normal MIDI device. First of all make sure you connect it the right way, which should be in the manual.
After that, check out this article on DJ Techtools explaining MIDI-mapping Traktor in detail:
http://djtechtools.com/2015/02/26/intro-to-basic-midi-mapping-with-traktor/
I hope this helps, but if it doesn’t: please explain what you’re trying to achieve. The biggest plus in digital DJ’ing in Traktor, according to me, is that you can make the software do whatever you want with all kinds of MIDI-devices or even your keyboard.
Good luck!
Grtz,
Moss L
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