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While unbiased surveys observable from ground-based telescopes havepreviously been obtained towards several high mass protostars, very littleexists on low mass protostars. To fill up this gap, we carried out a completespectral survey of the bands at 3, 2, 1 and 0.8 mm towards the solar typeprotostar IRAS16293-2422. The observations covered about 200\,GHz and wereobtained with the IRAM-30m and JCMT-15m telescopes. Particular attention wasdevoted to the inter-calibration of the obtained spectra with previousobservations. All the lines detected with more than 3 sigma and free fromobvious blending effects were fitted with Gaussians to estimate their basickinematic properties. More than 4000 lines were detected (with sigma \geq 3)and identified, yielding a line density of approximatively 20 lines per GHz,comparable to previous surveys in massive hot cores. The vast majority (~2/3)of the lines are weak and due to complex organic molecules. The analysis of theprofiles of more than 1000 lines belonging 70 species firmly establishes thepresence of two distinct velocity components, associated with the two objects,A and B, forming the IRAS16293-2422 binary system. In the source A, the linewidths of several species increase with the upper level energy of thetransition, a behavior compatible with gas infalling towards a ~1 Mo object.The source B, which does not show this effect, might have a much lower centralmass of ~0.1 Mo. The difference in the rest velocities of both objects isconsistent with the hypothesis that the source B rotates around the source A.This spectral survey, although obtained with single-dish telescope with a lowspatial resolution, allows to separate the emission from 2 differentcomponents, thanks to the large number of lines detected. The data of thesurvey are public and can be retrieved on the web sitehttp://www-laog.obs.ujf-grenoble.fr/heberges/timasss.

TIMASSS: The IRAS16293-2422 Millimeter And Submillimeter Spectral Survey. I. Observations, calibration and analysis of the line kinematics