The 9402 and 9404 Series test boards feature both single ended and double ended capability within the 2 x 25 position pin field. Note the left side of the board is the “coax” side and the right side is the “twin-ax” side. Since this development kit provides the test engineer with multiple signal traces on one PCB, "double-ended" SCI cable assemblies may be connected to the same board to simulate a board-to-board connection scheme. If separate ground planes are desired, two kits (with test boards) may be purchased to perform similar through type measurements.