Index© National Instruments Corporation Index-8 SCXI-1120 User Manualtemperature sensor connection, 2-15rear signal connectoranalog output signalconnections, 2-26communication signals, 2-28 to 2-31digital I/O signal connections, 2-26to 2-27pin assignments, 2-24, B-1pin equivalences with SCXIbus anddata acquisition boards,2-27, 5-2SCXIbus pin equivalences, 3-5signal descriptions, 2-25, B-2timing signal, 2-28SCXI-1320 terminal block, 2-20SCXI-1328 terminal block, 2-20SCXIbus connectorpin assignments, 3-3, C-2pin equivalences with rear signalconnector, 3-5pin equivalences with rear signalconnector and data acquisitionboards, 2-27, 5-2signal descriptions, 3-4 to 3-5,C-3 to C-4warning against exceeding maximumratings, 2-11single-channel measurements, 5-3 to 5-5direct measurements, 5-3 to 5-4indirect measurements, 5-4 to 5-5measurements from other modules, 5-4measurements from SCXI-1120 viaanother module, 5-4 to 5-5multiplexed output, 5-4parallel output, 5-3single-module multiplexed scanningdirect, 5-9indirect, 5-9theory of operation, 3-14 to 3-15single-module parallel scanning, 3-14, 5-8SL<3..0> bit, 4-6Slot 0 hardscan circuitry, programming,5-10 to 5-11Slot 0 registers, 4-5 to 4-8FIFO Register, 4-8Hardscan Control Register (HSCR), 4-7Slot-Select Register, 4-6slot selectionregister selection and write procedure,5-2 to 5-3slot-select timing diagram, 2-29writing 16-bit-slot select number, 2-29SLOT0SEL* signalcommunicating on SPI bus, 2-28 to 2-31digital I/O signal connections,2-26 to 2-27jumper connection, 2-4, 2-5programming hardscan circuitry, 5-11rear signal connector, 2-25, B-2register selection and write procedure,5-2 to 5-3software, optional, 1-2 to 1-3specificationsanalog input, A-1 to A-2cold-junction sensor, A-2 to A-3operating environment, A-3physical, A-3storage environment, A-3SPI bus. See communication signals for SPIbus.SPICLK signaldescription of, 3-4, C-3digital control circuitry, 3-7and SPI bus, 3-5SS* signaldescription of, 3-5, C-4digital control circuitry, 3-7, 3-8programming Slot 0 hardscancircuitry, 5-11storage environment specifications, A-3Ttechnical support, G-1temperature connection, direct(jumper W41), 2-8 to 2-9temperature sensorconnection for analog inputchannels, 2-15SCXI-1320 terminal block, 2-18SCXI-1328 terminal block, 2-18 to 2-19terminal block. See SCXI-1302 50-pinterminal block; SCXI-1320 terminalblock; SCXI-1328 terminal block.theory of operation
