Chapter 2 Configuration and Installation©National Instruments Corporation2-9AMUX-64T User ManualSingle-Board ConfigurationThe AMUX-64T is shipped from the factory with U12 set for single-boardconfiguration as shown in Table 2-5.Two-Board ConfigurationFor the two-board single-ended configuration, assign one board channeladdresses from 0 to 63, and assign the other board channel addresses from64 to 127. For differential operation, assign one board channel addresses0 through 31 and assign the other board channel addresses 32 through 63.The board that you assign addresses 0 through 63 (or 0 through 31) isreferred to as board A, and the board that you assign addresses 64 through127 (or 32 through 63) is referred to as board B. You can configure anyboard as board A or board B, as shown in Table 2-7.The switch settings for board A and board B in a two-board configurationare shown in Table 2-5.Four-Board ConfigurationFor the four-board configuration, each board has a different switch setting.You assign the first board channel addresses from 0 to 63, the second boardchannel addresses from 64 to 127, the third board channel addresses from128 to 191, and the fourth board channel addresses from 192 to 255. Fordifferential operation, assign the first board channel addresses 0 through31, the second board channel addresses 32 through 63, the third boardchannel addresses 64 through 95, and the fourth board channel addresses96 through 127. The board that you assign addresses 0 through 63(or 0 through 31) is referred to as board A; the board that you assignaddresses 64 through 127 (or 32 through 63) is referred to as board B; theboard that you assign addresses 128 to 191 (or 64 through 95) is referredto as board C; and the board that you assign addresses 192 through 255(or 96 through 127) is referred to as board D. You can configure any boardas board A, board B, board C, or board D, as shown in Table 2-8.Table 2-7. U12 Switch Settings for Two-Board ConfigurationBoardChannel Address Range SwitchesSingle-Ended Differential SW1 SW2 SW3 SW4 SW5Board A 0–63 0–31 ON OFF ON OFF OFFBoard B 64–127 64–95 OFF OFF ON OFF OFF