GX1164 is a 3U cPCI/PXI instrument board that provides 8 programmable resistance channels arranged in two groups of four. The channels can be configured by software commands to a specified resistance within the channel’s range. Each channel consists of eight resistors and eight relays to shunt each resistor. Channel 1, 3, 5 and 7 can be connected to an adjacent one (channels 2, 4, 6 and 8) provide better accuracy and higher resistance. Five different models are available: GX1164 with resolution of 1Ω, GX1164-2 with resolution of 2Ω, GX1164-4 with resolution of 4Ω , GX1164-8 with resolution of 8Ω and the GX1164-0.25 with a resolution of ¼Ω.