A quick search of ni.com for "9403" and "9201" will give you links to the spec sheet for both, which includes weight.
For the 9403:
http://digital.ni.com/manuals.nsf/we...2574E300195E06
And the 9201:
http://digital.ni.com/manuals.nsf/we...2573D0006BF8DD
(the simple answer is 150g, I just wanted to demonstrate how to find information like this)