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Summary of Contents for USB-9421

Page 1: ...9421 with D SUB are referred to inclusively as the NI USB 9421 Introduction The NI USB 9421 data acquisition device provides a USB interface with connections for eight digital input channels The NI U...

Page 2: ...illimeters Inches Figure 3 NI USB 9421 D SUB Device in Millimeters Inches Hi Speed USB Carrier NI USB 9162 140 23 mm 5 521 in 137 82 mm 5 426 in 120 68 mm 4 751 in 118 26 mm 4 656 in 88 12 mm 3 469 in...

Page 3: ...f or the area is known to be nonhazardous Caution The NI USB 9421 is not certified for use in hazardous locations Safety Guidelines for Hazardous Voltages If hazardous voltages are connected to the mo...

Page 4: ...nts Select Start All Programs National Instruments NI DAQ NI DAQmx Help LabVIEW If you are a new user use the Getting Started with LabVIEW manual to familiarize yourself with the LabVIEW graphical pro...

Page 5: ...Visual Basic NET you can interactively create channels and tasks by launching the DAQ Assistant from MAX or from within Visual Studio NET You can generate the configuration code based on your task or...

Page 6: ...entation To view the NI DAQmx NET documentation go to Start Programs National Instruments NI DAQ NI DAQmx NET Reference Help Expand NI Measurement Studio Help NI Measurement Studio NET Class Library R...

Page 7: ...sing other software refer to the installation instructions that accompany your software Example Programs The NI DAQmx CD contains example programs that you can use to get started programming with the...

Page 8: ...Figure 4 Module Installation 4 Squeeze the latches and insert the NI 9421 module into the NI USB 9162 carrier 5 Press firmly on the connector side of the NI 9421 module until the latches lock the modu...

Page 9: ...for more information LED Indicator The NI USB 9421 device has a green LED next to the USB connector The LED indicator indicates device status as listed in Table 1 When the device is connected to a US...

Page 10: ...evice not connected or in suspend On not blinking Device connected but no module installed Single blink Operating normally Double blink Operating normally Quadruple blink Device error Refer to ni com...

Page 11: ...connected to the isolated reference of the module Each digital input channel on the NI USB 9421 has an LED that indicates the state of that channel Refer to Table 3 for the terminal assignments of the...

Page 12: ...protection refer to the Specifications section You can connect 2 3 and 4 wire sourcing output devices to the NI USB 9421 A sourcing output device drives current or applies voltage to DI An example of...

Page 13: ...s OFF The channel LED turns on and off to indicate the state of the channel Refer to the Specifications section for more information about ON and OFF ranges Assembling the High Voltage Screw Terminal...

Page 14: ...ve to COM unless otherwise noted Input Characteristics Number of channels 8 Input type Sinking Digital logic levels OFF state Input voltage 5 V Input current 300 A ON state Input voltage 11 to 30 V In...

Page 15: ...ith D SUB Approx 245 g 8 6 oz Safety If you need to clean the module wipe it with a dry towel Safety Voltages NI USB 9421 with Screw Terminal Safety Voltages Connect only voltages that are within thes...

Page 16: ...e measurements include signal levels special equipment limited energy parts of equipment circuits powered by regulated low voltage sources and electronics Safety Standards The NI USB 9421 is designed...

Page 17: ...arking as follows 2006 95 EC Low Voltage Directive safety 2004 108 EC Electromagnetic Compatibility Directive EMC Note Refer to the Declaration of Conformity DoC for this product for any additional re...

Page 18: ...00 North Mopac Expressway Austin Texas 78759 3504 National Instruments also has offices located around the world to help address your support needs For telephone support in the United States create yo...

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