Patent ID: 6140830
Filing Date: 2000-10-31
Classification: G01R

Abstract:
Adapter system for a test device (28) for loaded component assembly circuit boards (31), comprising:an adapter part (1') with spring contact pins (2, 3) which are provided for contacting connection of a respective test point (32, 32') of the loaded component assembly circuit board (31) with a respective selected test channel contact (29) of a test channel (a.sub.1, a.sub.2, . . . b.sub.1, . . . c.sub.1, . . .) of the test device (28),a raster plate (21, 21') having electrical contact surfaces (22) arranged on its first outer surface, facing the loaded component assembly circuit board (31), and having test channel terminals (27) for the test channel contacts (29) of the test channels (a.sub.1, a.sub.2, . . . b.sub.1, . . . c.sub.1, . . .) of the test device (28) to be used on a second outer surface which is oriented opposite to the first outer surface of the raster plate (21, 21'), andelectrical connections, provided on the surface or inside the raster plate (21, 21') from electrical contact surfaces (22) of the first outer surface of the raster plate (21, 21') with respective test channel terminals (27) of the second outer surface of the raster plate (21, 21') respectively associated with such electrical contact surfaces (22),wherein with reference to the number of test channel terminals (27) of the test channels (a.sub.1, a.sub.2, . . . b.sub.1, . . . c.sub.1, . . .) of the test device (28) present on the second outer surface, on the first outer surface of the raster plate (21, 21') the number of the electrical contact surfaces (22) is multiplied andin each case a n-times multiple number of these electrical contact surfaces (22) is respectively has a group (No. 1, No. 2,. . .) electrically parallel-connected with one another and is connected with a selectively associated test channel to form a group (No. 1, No. 2. . .),wherein at least in regions of the first outer surface of the raster plate (21, 21') the individual electrical contact surfaces (22) of some of these groups (No. 1, No. 2. . .) and thus of some of the test channels (a.sub.1, a.sub.2, . . . b.sub.1, . . . c.sub.1, . . .) are positioned distributed extensively mixed amongst one another in such a manner, that an universal applicability of the raster plate (21, 21') is guaranteed.