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© Copyright 1992, 1994 National Instruments Corporation. All Rights Reserved. SCXI-1120 User Manual Eight-Channel Isolated Analog Input Module for Signal Conditioning August 1994 Edition Part Number .
National Instruments Corporate Headquarters 6504 Bridge Point Parkway Austin, TX 78730-5039 (512) 794-0100 Technical support fax: (800) 328-2203 (512) 794-5678 Branch Offices: Australia (03) 879 9422, Austria (0662) 435986, Belgium 02/757.
Limited Warranty The SCXI-1120 is warranted against defects in materials and workmanship for a period of one year from the date of shipment, as evidenced by receipts or other documentation. National Instruments will, at its option, repair or replace equipment that proves to be defective during the warranty period.
© National Instruments Corporation v SCXI-1120 User Manual Contents About This Manual ............................................................................................................. xi Organization of This Manual .......................
Contents SCXI-1120 User Manual vi © National Instruments Corporation Digital I/O Signal Connections .............................................................. 2-26 Timing Requirements and Communication Protocol ............................. 2-28 Timing Signal .
Contents © National Instruments Corporation vii SCXI-1120 User Manual Single-Channel Measurements .......................................................................... 5-3 Direct Measurements .....................................................
Contents SCXI-1120 User Manual viii © National Instruments Corporation Appendix E SCXI-1120 Cabling ............................................................................................................. E-1 SCXI-1340 Cable Assembly ...........
Contents © National Instruments Corporation ix SCXI-1120 User Manual Figures Figure 2-1. SCXI-1120 General Parts Locator Diagram ...................................................... 2-2 Figure 2-2. Detailed Parts Locator Diagram ...................
Contents SCXI-1120 User Manual x © National Instruments Corporation Tables Table 2-1. Digital Signal Connections, Jumper Settings ..................................................... 2-6 Table 2-2. Jumper W46 Settings ...............................
© National Instruments Corporation xi SCXI-1120 User Manual About This Manual This manual describes the electrical and mechanical aspects of the SCXI-1120 and contains information concerning its operation and programming. The SCXI-1120 is a class I module that operates as eight isolated input channels.
About This Manual SCXI-1120 User Manual xii © National Instruments Corporation • Appendix D, SCXI-1120 Front Connector , describes the pinout and signal names for the SCXI-1120 front connector, including a description of each connection.
About This Manual © National Instruments Corporation xiii SCXI-1120 User Manual SCXIbus descriptor may be omitted when the meaning is clear. Descriptions of all SCXIbus signals are given in Appendix C, SCXIbus Connector . Slot 0 Slot 0 refers to the power supply and control circuitry in the SCXI chassis.
© National Instruments Corporation 1-1 SCXI-1120 User Manual Chapter 1 Introduction This chapter describes the SCXI-1120; lists the contents of your SCXI-1120 kit; describes the optional software, optional equipment, and custom cables; and explains how to unpack the SCXI-1120 kit.
Introduction Chapter 1 SCXI-1120 User Manual 1-2 © National Instruments Corporation What Your Kit Should Contain The contents of the SCXI-1120 kit (part number 776572-20) are listed as follows.
Chapter 1 Introduction © National Instruments Corporation 1-3 SCXI-1120 User Manual You can also use the SCXI-1120, combined with the NB Series data acquisition boards, with NI -DAQ software for Macintosh.
Introduction Chapter 1 SCXI-1120 User Manual 1-4 © National Instruments Corporation Custom Cables The SCXI-1120 rear signal connector is a 50-pin male ribbon-cable header. The manufacturer part number used by National Instruments for this header is as follows: • AMP Inc.
© National Instruments Corporation 2-1 SCXI-1120 User Manual Chapter 2 Configuration and Installation This chapter describes the SCXI-1120 jumper configurations, installation of the SCXI-1120 into the SCXI chassis, signal connections to the SCXI-1120, and cable wiring.
Configuration and Installation Chapter 2 SCXI-1120 User Manual 2-2 © National Instruments Corporation Figure 2-1. SCXI-1120 General Parts Locator Diagram.
Chapter 2 Configuration and Installation © National Instruments Corporation 2-3 SCXI-1120 User Manual Figure 2-2 shows a detailed parts locator diagram of the SCXI-1120.
Configuration and Installation Chapter 2 SCXI-1120 User Manual 2-4 © National Instruments Corporation The jumpers are used as follows: • Fixed jumpers - On Revision A and B modules, jumper W42 is unused and should not be connected. - Jumper W45 is reserved and should not be reconfigured.
Chapter 2 Configuration and Installation © National Instruments Corporation 2-5 SCXI-1120 User Manual Jumper W44 On Revision A and B modules, position 1 connects, after buffering, SLOT0SEL* to the SCXIbus INTR* line. This is the factory-default setting and should not be changed.
Configuration and Installation Chapter 2 SCXI-1120 User Manual 2-6 © National Instruments Corporation acquisition board, those different modules will have jumpers similar to W43 and W42 of the SCXI-1120. Set those jumpers on the different modules using the same method described here for the SCXI-1120.
Chapter 2 Configuration and Installation © National Instruments Corporation 2-7 SCXI-1120 User Manual Table 2-1. Digital Signal Connections, Jumper Settings (Continued) Jumper Description Configurati.
Configuration and Installation Chapter 2 SCXI-1120 User Manual 2-8 © National Instruments Corporation Table 2-2. Jumper W46 Settings Jumper Description Configuration W46 Factory setting in parking position • • • • • • B A R 2 R 1 R 0 W46 Connects the analog reference to AOGND (pins 1 and 2 of the rear signal connector).
Chapter 2 Configuration and Installation © National Instruments Corporation 2-9 SCXI-1120 User Manual Table 2-3. Jumper W41 Settings Jumper Description Configuration W41 Temperature sensor accessed i.
Configuration and Installation Chapter 2 SCXI-1120 User Manual 2-10 © National Instruments Corporation Table 2-5. Gain Jumper Positions Gain Setting Jumper Position First-stage 1 10 50 100 D C B A (Factory setting) Second-stage 1 2 5 10 20 A B C D (Factory setting) E Filter Jumpers Two-stage filtering is also available on your SCXI-1120 module.
Chapter 2 Configuration and Installation © National Instruments Corporation 2-11 SCXI-1120 User Manual Hardware Installation You can install the SCXI-1120 in any available SCXI chassis.
Configuration and Installation Chapter 2 SCXI-1120 User Manual 2-12 © National Instruments Corporation Front Connector Figure 2-3 shows the pin assignments for the SCXI-1120 front connector.
Chapter 2 Configuration and Installation © National Instruments Corporation 2-13 SCXI-1120 User Manual Front Connector Signal Descriptions Pin Signal Name Description A2 CHSGND Chassis Ground – Tied to the SCXI chassis.
Configuration and Installation Chapter 2 SCXI-1120 User Manual 2-14 © National Instruments Corporation I V s V cm High CMV V out + - + - + - + Module Figure 2-4. Ground-Referenced Signal Connection with High Common-Mode Voltage + I V s V out + - + - Module Figure 2-5.
Chapter 2 Configuration and Installation © National Instruments Corporation 2-15 SCXI-1120 User Manual I V s V out + - + - R bias V cm High CMV + - + Module Figure 2-7. AC-Coupled Signal Connection with High Common-Mode Voltage For AC-coupled signals, an external resistor from the positive input channel to the signal reference should be connected.
Configuration and Installation Chapter 2 SCXI-1120 User Manual 2-16 © National Instruments Corporation Connector-and-Shell Assembly Two types of signal connectors are available to connect the signals to the SCXI-1120 inputs.
Chapter 2 Configuration and Installation © National Instruments Corporation 2-17 SCXI-1120 User Manual Mounting Screw Lock Washers Nut Jack Screws Grounding Screw Mounting Screw Nut Shell Assembly SCXI-1120 Module Shell Assembly Connector Figure 2-8.
Configuration and Installation Chapter 2 SCXI-1120 User Manual 2-18 © National Instruments Corporation The following warnings contain important safety information concerning hazardous voltages and terminal blocks. Warnings: When using the terminal block with high common-mode voltages, you must insulate your signal wires appropriately.
Chapter 2 Configuration and Installation © National Instruments Corporation 2-19 SCXI-1120 User Manual To determine the temperature, use the following formulas: T ( ° C) = T = T K - 273.15 where T K is the temperature in kelvin T K = 1 a + b lnR T () + c lnR T () 3 [] a = 1.
Configuration and Installation Chapter 2 SCXI-1120 User Manual 2-20 © National Instruments Corporation Table 2-8. Jumper Settings on the SCXI-1328 Terminal Block Jumper Position Description W1 DTEMP .
Chapter 2 Configuration and Installation © National Instruments Corporation 2-21 SCXI-1120 User Manual Figure 2-9. SCXI-1320 Parts Locator Diagram.
Configuration and Installation Chapter 2 SCXI-1120 User Manual 2-22 © National Instruments Corporation Figure 2-10. SCXI-1328 Parts Locator Diagram.
Chapter 2 Configuration and Installation © National Instruments Corporation 2-23 SCXI-1120 User Manual Terminal Block Installation To connect the terminal block to the SCXI-1120 front connector, perform the following steps: 1. Connect the SCXI-1120 front connector to its mating connector on the terminal block.
Configuration and Installation Chapter 2 SCXI-1120 User Manual 2-24 © National Instruments Corporation 1 2 3 4 5 6 7 8 9 10 1 1 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35.
Chapter 2 Configuration and Installation © National Instruments Corporation 2-25 SCXI-1120 User Manual Rear Signal Connector Signal Descriptions Pin Signal Name Description 1-2 AOGND Analog Output Ground – Connected to the analog reference when jumper W46 is in position AB-R0.
Configuration and Installation Chapter 2 SCXI-1120 User Manual 2-26 © National Instruments Corporation The signals on the rear signal connector can be classified as analog output signals, digital I/O signals, or timing I/O signals. Signal connection guidelines for each of these groups are given in the following section.
Chapter 2 Configuration and Installation © National Instruments Corporation 2-27 SCXI-1120 User Manual The digital output signal is pin 26: • Pin 26 is SERDATOUT and is equivalent to SCXIbus MISO when jumper W43 is in position 1. The digital I/O signals of the SCXI-1120 match the digital I/O lines of the MIO-16 board.
Configuration and Installation Chapter 2 SCXI-1120 User Manual 2-28 © National Instruments Corporation Timing Requirements and Communication Protocol Timing Signal The data acquisition timing signal is SCANCLK. SCANCLK is used to increment MUXCOUNTER on its rising edge.
Chapter 2 Configuration and Installation © National Instruments Corporation 2-29 SCXI-1120 User Manual 01 0 0 11 0 11 Chassis ID = 9 Slot 1 1 SERDA TIN SS*X Chassis Y SS*1 1 Chassis 9 SERCLK SLOT0SEL.
Configuration and Installation Chapter 2 SCXI-1120 User Manual 2-30 © National Instruments Corporation T low T high SERCLK SERDA TIN SERDA T OUT T setup T hold T delay T low Minimum low time 65 nsec .
Chapter 2 Configuration and Installation © National Instruments Corporation 2-31 SCXI-1120 User Manual SLOT0SEL* SERDATIN SERCLK SS* 0 1 0 00 0 1 10 0001 111 Figure 2-15. Configuration Register Write Timing Diagram To read from the Module ID Register, follow these steps: 1.
© National Instruments Corporation 3-1 SCXI-1120 User Manual Chapter 3 Theory of Operation This chapter contains a functional overview of the SCXI-1120 module and explains the operation of each functional unit making up the SCXI-1120. Functional Overview The block diagram in Figure 3-1 illustrates the key functional components of the SCXI-1120.
Theory of Operation Chapter 3 SCXI-1120 User Manual 3-2 © National Instruments Corporation The major components of the SCXI-1120 are as follows: • SCXIbus connector • Digital interface • Digita.
Chapter 3 Theory of Operation © National Instruments Corporation 3-3 SCXI-1120 User Manual GUARD GUARD GUARD AB0- GUARD GUARD GUARD GUARD GUARD GUARD CHSGND CHSGND CHSGND CHSGND CHSGND RSVD INTR* D*/.
Theory of Operation Chapter 3 SCXI-1120 User Manual 3-4 © National Instruments Corporation SCXIbus Connector Signal Descriptions Pin Signal Name Description A1, B1, C1, D1, GUARD Guard – Shields and guards the analog bus lines A2, D2, A3, B3, from noise.
Chapter 3 Theory of Operation © National Instruments Corporation 3-5 SCXI-1120 User Manual Pin Signal Name Description (continued) A24 TRIG0 TRIG0 – General-purpose trigger line used by the SCXI-1120 to send SCANCLK to other modules or receive SCANCLK from other modules.
Theory of Operation Chapter 3 SCXI-1120 User Manual 3-6 © National Instruments Corporation Digital Interface Figure 3-3 shows a diagram of the SCXI-1120 and SCXIbus digital interface circuitry.
Chapter 3 Theory of Operation © National Instruments Corporation 3-7 SCXI-1120 User Manual Digital Control Circuitry Figure 3-4 diagrams the SCXI-1120 digital control.
Theory of Operation Chapter 3 SCXI-1120 User Manual 3-8 © National Instruments Corporation The Module ID Register connects to MISO on the SCXIbus. The Module ID Register is an 8-bit, parallel/serial-in, serial-out shift register and an SPI communication adapter.
Chapter 3 Theory of Operation © National Instruments Corporation 3-9 SCXI-1120 User Manual + - + - + - + - + - + - + - + - MTEMP DTEMP Input Channel 0 LPF I + LPF + - T o Output Stage Input Channel 1.
Theory of Operation Chapter 3 SCXI-1120 User Manual 3-10 © National Instruments Corporation The analog input consists of eight isolated single-ended noninverting amplifiers. In addition, lowpass filtering is available at the inputs. You can jumper select one of two bandwidths, 10 kHz or 4 Hz.
Chapter 3 Theory of Operation © National Instruments Corporation 3-11 SCXI-1120 User Manual A multiranging 3 1/2-digit digital multimeter can provide you with the necessary function as described previously. We will refer to the measuring instrument as a digital multimeter (DMM).
Theory of Operation Chapter 3 SCXI-1120 User Manual 3-12 © National Instruments Corporation Table 3-2. Calibration Potentiometers Reference Designators Input Channel Amplifier Channel Number Input Nu.
Chapter 3 Theory of Operation © National Instruments Corporation 3-13 SCXI-1120 User Manual The SCXI-1120 output circuitry consists of a buffered-output multiplexer and channel-select hardware. The channel-select hardware consists of a three-bit counter, MUXCOUNTER.
Theory of Operation Chapter 3 SCXI-1120 User Manual 3-14 © National Instruments Corporation data acquisition board user manual, or your SCXI chassis user manual. If you need more information, contact National Instruments. Single-Module Parallel Scanning Single-module parallel scanning is the simplest scanning mode.
Chapter 3 Theory of Operation © National Instruments Corporation 3-15 SCXI-1120 User Manual except during changes from one Slot 0 scan list entry to the next, when SCANCON pulses high to make the MUXCOUNTER reload its starting channel.
Theory of Operation Chapter 3 SCXI-1120 User Manual 3-16 © National Instruments Corporation onto TRIG0 for the other modules and Slot 0, as shown in Figure 3-10. The scan list in Slot 0 is programmed with the sequence of modules and the number of samples per entry.
© National Instruments Corporation 4-1 SCXI-1120 User Manual Chapter 4 Register Descriptions This chapter describes in detail the SCXI-1120 Module ID Register, the Configuration Register, the Slot 0 registers, and multiplexer addressing.
Register Descriptions Chapter 4 SCXI-1120 User Manual 4-2 © National Instruments Corporation Module ID Register The Module ID Register contains the 4-byte module ID code for the SCXI-1120. This code number will be read as the first four bytes on the MISO line whenever the module is accessed.
Chapter 4 Register Descriptions © National Instruments Corporation 4-3 SCXI-1120 User Manual Configuration Register The Configuration Register contains 16 bits that control the functions of the SCXI-1120.
Register Descriptions Chapter 4 SCXI-1120 User Manual 4-4 © National Instruments Corporation Bit Name Description (continued) 5 RTEMP Read Temperature – This bit determines whether the selected channel output or the MTEMP signal is driven onto the MCH0 ± pins of the rear signal connector.
Chapter 4 Register Descriptions © National Instruments Corporation 4-5 SCXI-1120 User Manual Slot 0 Register Descriptions Slot 0 has three registers. The Slot-Select Register is a 16-bit, write-only register that determines with which slot the data acquisition board will speak when SLOT0SEL* is released high.
Register Descriptions Chapter 4 SCXI-1120 User Manual 4-6 © National Instruments Corporation Slot-Select Register The Slot-Select Register contains 16 bits that determine which module in which chassis will be enabled for communication when the SLOT0SEL* line is high.
Chapter 4 Register Descriptions © National Instruments Corporation 4-7 SCXI-1120 User Manual Hardscan Control Register (HSCR) The HSCR contains eight bits that control the setup and operation of the hardscan timing circuitry of Slot 0.
Register Descriptions Chapter 4 SCXI-1120 User Manual 4-8 © National Instruments Corporation FIFO Register The FIFO Register is used to add entries to the Slot 0 FIFO. The FIFO contains the Slot 0 scan list. Each entry contains a slot number to be accessed, and a count number to determine the number of samples to be taken from that slot.
© National Instruments Corporation 5-1 SCXI-1120 User Manual Chapter 5 Programming This chapter contains a functional programming description of the SCXI-1120 and Slot 0. Note: If you plan to use a programming software package such as NI-DAQ, LabWindows, or LabVIEW with your SCXI-1120 board, you do not need to read this chapter.
Programming Chapter 5 SCXI-1120 User Manual 5-2 © National Instruments Corporation Table 5-1. SCXI-1120 Rear Signal Connector Pin Equivalences SCXIbus Line SCXI-1120 Rear Signal Connector MIO-16 Boar.
Chapter 5 Programming © National Instruments Corporation 5-3 SCXI-1120 User Manual 7. Pull SLOT0SEL* low to deassert the SS* line, latch the data into the Configuration Register and establish conditions for writing a new slot-select number to the Slot 0 Slot-Select Register.
Programming Chapter 5 SCXI-1120 User Manual 5-4 © National Instruments Corporation Multiplexed Output To perform a direct multiplexed output measurement, you must cable the SCXI-1120 rear signal connector to a data acquisition board. See Chapter 2, Configuration and Installation , for more information.
Chapter 5 Programming © National Instruments Corporation 5-5 SCXI-1120 User Manual To measure one of the eight differential input channels to the SCXI-1120, perform the following steps: 1. Perform any necessary programming to ensure that no modules are driving Analog Bus 0.
Programming Chapter 5 SCXI-1120 User Manual 5-6 © National Instruments Corporation 1. Data Acquisition Board Setup Programming The programming steps for your data acquisition board are given in your data acquisition board user manual.
Chapter 5 Programming © National Instruments Corporation 5-7 SCXI-1120 User Manual • MC-MIO-16 User Manual - Multiple A/D Conversions with Continuous Channel Scanning (Round Robin) - Multiple A/D C.
Programming Chapter 5 SCXI-1120 User Manual 5-8 © National Instruments Corporation Counter 1 and SCANDIV All MIO boards can operate their data acquisition board scan lists in two ways–they can acqu.
Chapter 5 Programming © National Instruments Corporation 5-9 SCXI-1120 User Manual Single-Module Multiplexed Scanning (Direct) To perform simple channel scanning, you must cable the SCXI-1120 to a data acquisition board. See Chapter 2, Configuration and Installation, for more information.
Programming Chapter 5 SCXI-1120 User Manual 5-10 © National Instruments Corporation also be able to send a SCANCLK*-compatible signal on TRIG0. See Chapter 2, Configuration and Installation, for more information. The module programming steps are as follows: 1.
Chapter 5 Programming © National Instruments Corporation 5-11 SCXI-1120 User Manual To program the hardscan circuitry, perform the following steps: 1. Write binary 0000 0000 to the HSCR. 2. Write binary 0000 1000 to the HSCR. 3. Write the Slot 0 scan list to the FIFO.
Programming Chapter 5 SCXI-1120 User Manual 5-12 © National Instruments Corporation 4. Acquisition Enable, Triggering, and Servicing At this point, you should now continue from where you left off in the 1. Data Acquisition Board Setup Programming section of this chapter.
Chapter 5 Programming © National Instruments Corporation 5-13 SCXI-1120 User Manual 3. Follow the steps outlined in the section earlier in this chapter, 3. Programming the Slot 0 Hardscan Circuitry, where step 3, Write the Slot 0 scan list to the FIFO , consists of the following: Write 00000000 00000011 to the FIFO Register.
Programming Chapter 5 SCXI-1120 User Manual 5-14 © National Instruments Corporation 7. Follow the procedure given in the 4. Acquisition Enable, Triggering, and Servicing section earlier in this chapter.
Chapter 5 Programming © National Instruments Corporation 5-15 SCXI-1120 User Manual 13. Toggle SLOT0SEL*. 14. Write XXXXX001 00000010 over MOSI. 15. Toggle SLOT0SEL*.
© National Instruments Corporation A-1 SCXI-1120 User Manual Appendix A Specifications This appendix lists the specifications for the SCXI-1120. These are typical at 25 ° C unless otherwise stated. The operating temperature range is 0 ° to 50 ° C.
Specifications Appendix A SCXI-1120 User Manual A-2 © National Instruments Corporation Rise time 4 Hz 0.12 sec 10 kHz 70 µ sec Slew rate 0.15 V/ µ sec Noise (400 kHz bandwidth) 1 Input (gain = 1,00.
Appendix A Specifications © National Instruments Corporation A-3 SCXI-1120 User Manual Note: You can find the temperature T ( ° C) as follows: T ( ° C) = T K - 273.15 where T K is the temperature in kelvin T K = 1 a + b lnR T () + c lnR T () 3 [] a = 1.
© National Instruments Corporation B-1 SCXI-1120 User Manual Appendix B Rear Signal Connector This appendix describes the pinout and signal names for the SCXI-1120 50-pin rear signal connector, including a description of each connection. Figure B-1 shows the pin assignments for the SCXI-1120 rear signal connector.
Rear Signal Connector Appendix B SCXI-1120 User Manual B-2 © National Instruments Corporation Rear Signal Connector Signal Descriptions Pin Signal Name Description 1-2 AOGND Analog Output Ground – Connected to the analog reference when jumper W46 is in position AB-R0.
Appendix B Rear Signal Connector © National Instruments Corporation B-3 SCXI-1120 User Manual See the Timing Requirements and Communication Protocol section in Chapter 2, Configuration and Installation , for more detailed information on timing. Detailed signal specifications are also included in Chapter 2.
© National Instruments Corporation C-1 SCXI-1120 User Manual Appendix C SCXIbus Connector This appendix describes the pinout and signal names for the SCXI-1120 96-pin SCXIbus connector, including a description of each connection. Figure C-1 shows the pinout of the SCXI-1120 SCXIbus connector.
SCXIbus Connector Appendix C SCXI-1120 User Manual C-2 © National Instruments Corporation GUARD GUARD GUARD AB0- GUARD GUARD GUARD GUARD GUARD GUARD CHSGND CHSGND CHSGND CHSGND CHSGND RSVD INTR* D*/A.
Appendix C SCXIbus Connector © National Instruments Corporation C-3 SCXI-1120 User Manual SCXIbus Connector Signal Descriptions Pin Signal Name Description A1, B1, C1, D1, GUARD Guard – Shields and guards the analog bus lines A2, D2, A3, B3, from noise.
SCXIbus Connector Appendix C SCXI-1120 User Manual C-4 © National Instruments Corporation Pin Signal Name Description (continued) A24 TRIG0 TRIG0 – General-purpose trigger line used by the SCXI-1120 to send SCANCLK to other modules or receive SCANCLK from other modules.
© National Instruments Corporation D- 1 SCXI-1120 User Manual Appendix D SCXI-1120 Front Connector This appendix describes the pinout and signal names for the SCXI-1120 front connector, including a description of each connection. Figure D-1 shows the pin assignments for the SCXI-1120 front connector.
SCXI-1120 Front Connector Appendix D SCXI-1120 User Manual D- 2 © National Instruments Corporation Front Connector Signal Descriptions Pin Signal Name Description A2 CHSGND Chassis Ground – Tied to the SCXI chassis.
© National Instruments Corporation E-1 SCXI-1120 User Manual Appendix E SCXI-1120 Cabling This appendix describes how to use and install the hardware accessories for the SCXI-1120: • SCXI-1340 cabl.
SCXI-1120 Cabling Appendix E SCXI-1120 User Manual E-2 © National Instruments Corporation Table E-1 lists the pin equivalences of the MIO-16 board and the SCXI-1120.
Appendix E SCXI-1120 Cabling © National Instruments Corporation E-3 SCXI-1120 User Manual 5. Connect the loose end of the cable assembly to the MIO-16 board rear signal connector.
SCXI-1120 Cabling Appendix E SCXI-1120 User Manual E-4 © National Instruments Corporation Lab boards full access to the digital control lines and analog signals (except DTEMP), but the Lab boards cannot scan channels in Multiplexed mode. Leave jumper W1 in position A on the SCXI-1341 and SCXI-1344.
Appendix E SCXI-1120 Cabling © National Instruments Corporation E-5 SCXI-1120 User Manual 6. For an SCXI-1341, connect the loose end of the ribbon cable to the Lab-NB, Lab-PC, or Lab-PC+ I/O connector.
SCXI-1120 Cabling Appendix E SCXI-1120 User Manual E-6 © National Instruments Corporation Table E-3. SCXI-1342 Pin Translations (Continued) PC-LPM-16 Pin PC-LPM-16 Signal Rear Signal Connector Pin SC.
Appendix E SCXI-1120 Cabling © National Instruments Corporation E-7 SCXI-1120 User Manual 1. Make sure that the computer and the SCXI chassis are turned off. 2. Remove the front filler panel of the slot where you will insert the SCXI-1180. 3. Thread the rear connector through the front of the chassis to the rear of the chassis.
SCXI-1120 Cabling Appendix E SCXI-1120 User Manual E-8 © National Instruments Corporation Front Panel Connector Front Panel Front Threaded Strip Ribbon Cable to Rear and Breakout Connectors Step 5 Figure E-3.
Appendix E SCXI-1120 Cabling © National Instruments Corporation E-9 SCXI-1120 User Manual 50-Pin Connector Grounding Screw Thumbscrew Cutout Step 1 Step 2 Insert Screwdriver in Groove and Rotate to Pry Open Figure E-4. Cover Removal SCXI-1302 Installation Follow these steps to install the SCXI-1302: 1.
SCXI-1120 Cabling Appendix E SCXI-1120 User Manual E-10 © National Instruments Corporation SCXI-1351 Installation Follow these steps to install the SCXI-1351: 1. Make sure that the computer and the SCXI chassis are turned off. 2. Install the SCXI module in the chassis.
Appendix E SCXI-1120 Cabling © National Instruments Corporation E-11 SCXI-1120 User Manual 5. Connect another ribbon cable or cable assembly to the chassis extender connector. 6. Plug the adapter board front connector to the module rear signal connector.
SCXI-1120 Cabling Appendix E SCXI-1120 User Manual E-12 © National Instruments Corporation Table E-4. SCXI-1343 Pin Connections Rear Signal Connector Pin SCXI-1120 Use Connection Type 1 AOGND Solder .
© National Instruments Corporation F-1 SCXI-1120 User Manual Appendix F Revision A and B Photo and Parts Locator Diagrams This appendix contains a photograph of the Revision A and B SCXI-1120 signal conditioning module and the general and detailed parts locator diagrams.
Revision A and B Photo and Parts Locator Diagrams Appendix F SCXI-1120 User Manual F-2 © National Instruments Corporation Figure F-2. Revision A and B SCXI-1120 General Parts Locator Diagram.
Appendix F Revision A and B Photo and Parts Locator Diagrams © National Instruments Corporation F-3 SCXI-1120 User Manual Figure F-3. Revision A and B SCXI-1120 Detailed Parts Locator Diagram.
© National Instruments Corporation G- 1 SCXI-1120 User Manual Appendix G Customer Communication For your convenience, this appendix contains forms to help you gather the information necessary to help us solve technical problems you might have as well as a form you can use to comment on the product documentation.
Technical Support Form ___________________________________________________ Photocopy this form and update it each time you make changes to your software or hardware, and use the completed copy of this form as a reference for your current configuration.
SCXI-1120 Hardware Configuration Form Record the settings and revisions of your hardware and software on the line to the right of each item. Complete a new copy of this form each time you revise your software or hardware configuration, and use this form as a reference for your current configuration.
Documentation Comment Form National Instruments encourages you to comment on the documentation supplied with our products. This information helps us provide quality products to meet your needs. Title: SCXI-1120 User Manual Edition Date: August 1994 Part Number: 320425B-01 Please comment on the completeness, clarity, and organization of the manual.
© National Instruments Corporation Glossary-1 SCXI-1120 User Manual Glossary Prefix Meaning Value p- pico- 10 -12 n- nano- 10 -9 µ - micro- 10 -6 m- milli- 10 -3 k- kilo- 10 3 M- mega- 10 6 Numbers/.
Glossary SCXI-1120 User Manual Glossary-2 © National Instruments Corporation D D*/A Data/Address signal D/A digital-to-analog DAQD*/A Data Acquisition Board Data/Address Line signal dB decibels DIG G.
Glossary © National Instruments Corporation Glossary-3 SCXI-1120 User Manual M m meters M megabytes of memory MCH#+ Positive Analog Output Channel Number signal MCH#- Negative Analog Output Channel N.
Glossary SCXI-1120 User Manual Glossary-4 © National Instruments Corporation sec seconds SERCLK Serial Clock signal SERDATIN Serial Data In signal SERDATOUT Serial Data Out signal SL Slot bit SLOT0SE.
SCXI-1120 User Manual Index- 1 © National Instruments Corporation Index Numbers/Symbols +5 V signal front connector, 2-13, D-2 SCXIbus connector, 3-4, C-3 A AB0- signal, 3-4, C-3 AB0+ signal, 3-4, C-.
Index © National Instruments Corporation Index- 2 SCXI-1120 User Manual SCXI-1120 and MIO-16 board pinout equivalences, E-2 SCXI-1341 cable assembly, E-3 to E-4 installation, E-4 to E-5 SCXI-1342 cab.
Index SCXI-1120 User Manual Index- 3 © National Instruments Corporation register selection and write procedure, 5-2 DIG GND signal, 2-25, B-2 digital control circuitry, 3-7 to 3-8 digital I/O signal .
Index © National Instruments Corporation Index- 4 SCXI-1120 User Manual SCXI-1328 terminal block, 2-23 SCXI-1340, E-2 to E-3 SCXI-1341, E-4 to E-5 SCXI-1342, E-6 SCXI-1343 rear screw terminal adapter.
Index SCXI-1120 User Manual Index- 5 © National Instruments Corporation N NI-DAQ software, 1-2 to 1-3 nulling the offset, 3-11 O ONCE bit, 4-7 operating environment specifications, A-3 operation of SCXI-1120.
Index © National Instruments Corporation Index- 6 SCXI-1120 User Manual reference-mode selection (jumper W46), 2-7 registers programming considerations, 5-1 to 5-3 initialization, 5-3 rear signal con.
Index SCXI-1120 User Manual Index- 7 © National Instruments Corporation Configuration Register, 2-30 to 2-31, 3-7, 4-3 to 4-4 Module ID Register, 2-31, 3-8, 4-2 SCXI-1180 feedthrough panel cable asse.
Index © National Instruments Corporation Index- 8 SCXI-1120 User Manual temperature sensor connection, 2-15 rear signal connector analog output signal connections, 2-26 communication signals, 2-28 to.
Index SCXI-1120 User Manual Index- 9 © National Instruments Corporation analog and timing circuitry, 3-8 to 3-13 analog input block diagram, 3-9 analog input channels, 3-9 to 3-10 analog output circu.
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