National Instruments NI 9401 Operating Instructions And Specifications

National Instruments NI 9401 Operating Instructions And Specifications

8-channel, ttl digital input/output module
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  • Page 1 (217) 352-9330 | Click HERE Find the National Instruments NI 9401 at our website:...
  • Page 2 OPERATING INSTRUCTIONS AND SPECIFICATIONS NI 9401 8-Channel, TTL Digital Input/Output Module Français Deutsch ni.com/manuals...
  • Page 3 Refer to the documentation for each component in the system to determine the safety ratings and specifications for the entire system. Visit and enter for information ni.com/info cseriesdoc about C Series documentation. 2 | ni.com | NI 9401 Operating Instructions and Specifications...
  • Page 4: Safety Guidelines For Hazardous Locations

    Instruments for repair. Safety Guidelines for Hazardous Locations The NI 9401 is suitable for use in Class I, Division 2, Groups A, B, C, D, T4 hazardous locations; Class I, Zone 2, AEx nC IIC T4, and Ex nC IIC T4 hazardous locations; and nonhazardous locations only.
  • Page 5 IP 54 as defined by IEC 60529 and EN 60529. For Division 2 and Zone 2 applications, Caution connected signals must be within the following limit: Capacitance ......0.2 μF max 4 | ni.com | NI 9401 Operating Instructions and Specifications...
  • Page 6: Special Conditions For Hazardous Locations Use In Europe

    II 3G and is suitable for use in Zone 2 hazardous locations. If you are using the NI 9401 in Gas Group IIC hazardous locations or in ambient temperatures of -40 °C ≤ Ta ≤ 70 °C, you must use the device in an NI chassis that has been evaluated as EEx nC IIC T4, Ex nA IIC T4, or Ex nL IIC T4 equipment.
  • Page 7 (National Instruments part number 711627-01) in accordance with the product installation instructions. Refer to the NI 9401 product page on for purchasing information ni.com about clamp-on ferrite beads. 6 | ni.com | NI 9401 Operating Instructions and Specifications...
  • Page 8: Cable Requirements For Emc Compliance

    Cable Requirements for EMC Compliance Select and install cables for the NI 9401 in accordance with the following requirements: • Install a clamp-on ferrite bead (National Instruments part number 711627-01) on cable that you are connecting to NI 9401. •...
  • Page 9: Special Conditions For Marine Applications

    Power supply and module cables must be separated on opposite sides of the enclosure and must enter and exit through opposing enclosure walls. 8 | ni.com | NI 9401 Operating Instructions and Specifications...
  • Page 10 The NI 9401 has a 25-pin DSUB connector that provides connections for eight digital input/output channels. Figure 2. NI 9401 Pin Assignments DIO0 DIO1 DIO2 DIO3 DIO4 DIO5 DIO6 DIO7 NI 9401 Operating Instructions and Specifications | © National Instruments | 9...
  • Page 11 Refer to the Specifications section for more information about input thresholds and overvoltage protection. Refer to the Overcurrent Protection section for more information about overcurrent protection. 10 | ni.com | NI 9401 Operating Instructions and Specifications...
  • Page 12 Figure 3 illustrates how to connect an SPI device to the NI 9401. In this example, the three channels assigned to output signals are on one port and the channel assigned to an input signal is on the other port.
  • Page 13 Figure 4. Connecting Digital Devices to the NI 9401 DIO0 as Input TTL Signal Dev 1 DIO1 as Input +5 V Dev 2 +5 V DIO7 as Output Dev 3 NI 9401 12 | ni.com | NI 9401 Operating Instructions and Specifications...
  • Page 14: Overcurrent Protection

    Overcurrent protection on the NI 9401 allows only a specified amount of current for switching DIO channels or sourcing the output load. If the NI 9401 goes into an overcurrent state, by exceeding the specified maximum switching frequency or the...
  • Page 15: Specifications

    The following specifications are typical for the range -40 to 70 °C unless otherwise noted. All voltages are relative to COM unless otherwise noted. Input/Output Characteristics Number of channels......8 DIO channels Default power-on line direction..Input Input/output type....... TTL, single-ended 14 | ni.com | NI 9401 Operating Instructions and Specifications...
  • Page 16 Sinking 2 mA....0.4 V max Maximum input signal switching frequency by number of input channels, per channel 8 input channels......9 MHz 4 input channels......16 MHz 2 input channels......30 MHz NI 9401 Operating Instructions and Specifications | © National Instruments | 15...
  • Page 17 MTBF ..........1,244,763 hours at 25 °C; Bellcore Issue 2, Method 1, Case 3, Limited Part Stress Method 16 | ni.com | NI 9401 Operating Instructions and Specifications...
  • Page 18: Power Requirements

    Active mode ....... 580 mW max Sleep mode ......... 1 mW max Physical Characteristics If you need to clean the module, wipe it with a dry towel. Weight..........145 g (5.1 oz) NI 9401 Operating Instructions and Specifications | © National Instruments | 17...
  • Page 19: Maximum Voltage

    , verified by a 5 s dielectric withstand test The maximum voltage that can be applied or output between any channel and COM without damaging the module or other devices. 18 | ni.com | NI 9401 Operating Instructions and Specifications...
  • Page 20: Hazardous Locations

    Canada (C-UL) ......... Class I, Division 2, Groups A, B, C, D, T4; Class I, Zone 2, Ex nC IIC T4 Europe (DEMKO) ......EEx nC IIC T4 NI 9401 Operating Instructions and Specifications | © National Instruments | 19...
  • Page 21: Safety Standards

    • EN 61326 EMC requirements; Industrial Immunity • EN 55011 Emissions; Group 1, Class A • CE, C-Tick, ICES, and FCC Part 15 Emissions; Class A 20 | ni.com | NI 9401 Operating Instructions and Specifications...
  • Page 22 Online Product Certification section. CE Compliance This product meets the essential requirements of applicable European Directives as follows: • 2006/95/EC; Low-Voltage Directive (safety) • 2004/108/EC; Electromagnetic Compatibility Directive (EMC) NI 9401 Operating Instructions and Specifications | © National Instruments | 21...
  • Page 23: Online Product Certification

    Sinusoidal (IEC 60068-2-6) ..5 g, 10 to 500 Hz Operating shock (IEC 60068-2-27) ....... 30 g, 11 ms half sine, 50 g, 3 ms half sine, 18 shocks at 6 orientations 22 | ni.com | NI 9401 Operating Instructions and Specifications...
  • Page 24 Operating humidity (IEC 60068-2-56)......10% to 90% RH, noncondensing Storage humidity (IEC 60068-2-56)......5% to 95% RH, noncondensing Pollution Degree ....... 2 Maximum altitude......2,000 m Indoor use only. NI 9401 Operating Instructions and Specifications | © National Instruments | 23...
  • Page 25: Environmental Management

    Our Environmental Impact web page at ni.com/environment This page contains the environmental regulations and directives with which NI complies, as well as other environmental information not included in this document. 24 | ni.com | NI 9401 Operating Instructions and Specifications...
  • Page 26: Waste Electrical And Electronic Equipment (Weee)

    WEEE Directive 2002/96/EC on Waste and Electronic Equipment, visit ni.com/environment/ weee National Instruments (RoHS) National Instruments RoHS (For information ni.com/environment/rohs_china about China RoHS compliance, go to ni.com/ environment/rohs_china NI 9401 Operating Instructions and Specifications | © National Instruments | 25...
  • Page 27: Where To Go For Support

    United States, visit the Worldwide Offices section of to access the branch office Web ni.com/niglobal sites, which provide up-to-date contact information, support phone numbers, email addresses, and current events. 26 | ni.com | NI 9401 Operating Instructions and Specifications...
  • Page 28 LabVIEW, National Instruments, NI, ni.com, the National Instruments corporate logo, and the Eagle logo are trademarks of National Instruments Corporation. Refer to the Trademark Information at ni.com/trademarks for other National Instruments trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies.

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