Abstract: The invention relates to a test device (15) which permits the analysis of the connection quality at an access point to a wireless local access network, from a location which houses computer equipment, including a wireless communication card, characterised in being in the form of the body with a housing (9), for the interchangeable housing of a wireless communication card (16), means for processing emitted and/or received signals going to or coming from an access point to the network and means for displaying (17) information relating to said signals.