4-channel, 24-bit analog voltage input module (21 pages)
Summary of Contents for National Instruments NI USB-6008
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Français Deutsch ni.com/manuals This user guide describes how to use the National Instruments USB-6008 and National Instruments USB-6009 data acquisition (DAQ) devices and lists specifications. The NI USB-6008/6009 provides connection to eight single-ended analog input (AI) channels, two analog output (AO) channels, 12 digital input/output (DIO) channels, and a 32-bit counter with a full-speed USB interface.
Figure 1 shows key functional components of the NI USB-6008/6009. External Vbus +5 V/200 mA Power Supply PFI 0 USB Microcontroller P1.<0..3> P0.<0..7> +2.5 V/CAL 8 Channel 12/14b ADC AI <0..7> 12b DAC AO 0 12b DAC AO 1 Figure 1. NI USB-6008/6009 Block Diagram Contents Safety Guidelines..........................
Do not operate the NI USB-6008/6009 in a manner not specified in this document. Misuse of the device can result in a hazard. You can compromise the safety protection built into the device if the device is damaged in any way. If the device is damaged, contact National Instruments for repair. Caution Do not substitute parts or modify the device except as described in this document.
Changes or modifications not expressly approved by National Instruments could void the user’s authority to operate the hardware under the local regulatory rules. Unpacking The NI USB-6008/6009 device ships in an antistatic package to prevent electrostatic discharge (ESD). ESD can damage several components on the device. Caution Never touch the exposed pins of connectors.
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After you label the screw terminal connector plugs, you must only insert them into the matching connector jack, as indicated by the overlay label on the device. Plug one end of the USB cable into the NI USB-6008/6009 and the other end into an available USB port on the computer.
Double-click the Measurement & Automation icon, shown at left, on the desktop to open Measurement & Automation Explorer (MAX). Expand My System»Devices and Interfaces and verify that the NI USB-6008/6009 is listed. If your device does not appear, press <F5> to refresh the view in MAX. If your device is still not recognized, refer to for troubleshooting information.
USB Connector and USB Cable Strain Relief The NI USB-6008/6009 features a USB connector for full-speed USB interface. You can provide strain relief for the USB cable by threading a zip tie through the USB cable strain relief ring and tightening around a looped USB cable, as shown in Figure 5.
LED Indicator The NI USB-6008/6009 device has a green LED indicator that indicates device status, as listed in Table 3. When the device is connected to a USB port, the LED blinks steadily to indicate that the device is initialized and is receiving power from the connection.
Cables and Accessories Table 4 contains information about cables and accessories available for the NI USB-6008/6009. For a complete list of accessories and ordering information, refer to the pricing section of the NI USB-6008 or NI USB-6009 product page at ni.com...
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+2.5 V External Reference section for more information. +5 V Output +5 V Power Source—Provides +5 V power up to 200 mA. Refer to the +5 V Power Source section for more information. NI USB-6008/6009 User Guide and Specifications ni.com...
Analog Input The NI USB-6008/6009 has eight analog input channels that you can use for four differential analog input measurements or eight single-ended analog input measurements. Figure 7 shows the analog input circuitry of the NI USB-6008/6009. +2.5 V AI FIFO 30.9 kΩ...
The input signal is low level and requires greater accuracy. • The leads connecting the signal to the device are greater than 3 m (10 ft). • The input signal requires a separate ground-reference point or return signal. NI USB-6008/6009 User Guide and Specifications ni.com...
±10 V with respect to GND. For example, if AI 1 is +10 V and AI 5 is –10 V, then the measurement returned from the device is +20 V. AI 1 AI 5 Result –5 –10 –15 –20 Figure 9. Example of a Differential 20 V Measurement NI USB-6008/6009 User Guide and Specifications ni.com...
Figure 10. Exceeding ±10 V on AI Returns Clipped Output Taking Referenced Single-Ended Measurements To connect referenced single-ended (RSE) voltage signals to the NI USB-6008/6009, connect the positive voltage signal to an AI terminal, and the ground signal to a GND terminal, as shown in Figure 11.
Connecting Analog Output Loads To connect loads to the NI USB-6008/6009, connect the positive lead of the load to the AO terminal, and connect the ground of the load to a GND terminal, as shown in Figure 13.
Digital I/O The NI USB-6008/6009 has 12 digital lines on two ports, Port 0 has eight lines, P0.<0..7>, and Port 1 has four lines, P1.<0..3>. GND is the ground-reference signal for the digital I/O ports. You can individually program all lines as inputs or outputs.
Source/Sink Information The default configuration of the NI USB-6008/6009 digital I/O ports is open collector, allowing 5 V operation, with an onboard 4.7 kΩ pull-up resistor. An external user-provided pull-up resistor can be added to increase the source current drive up to a 8.5 mA limit per line as shown in Figure 15.
Static DIO Each of the NI USB-6008/6009 DIO lines can be used as a static DI or DO line. You can use static DIO lines to monitor or control digital signals. All samples of static DI lines and updates of DO lines are software-timed.
You can use the resulting +2.5 V reference voltage as a signal for self-test. +5 V Power Source The NI USB-6008/6009 supplies a 5 V, 200 mA output. You can use this source to power external components. Note When the device is in USB suspend, the output is disabled.
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+2.5 V output (1 mA maximum) ......+2.5 V +2.5 V accuracy .............0.25% maximum Reference temperature drift ........50 ppm/°C maximum This document uses NI-DAQmx naming conventions. Open-drain is called open collector and push-pull is called active drive. NI USB-6008/6009 User Guide and Specifications ni.com...
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Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated low-voltage sources, and electronics. Caution Do not use this module for connection to signals or for measurements within Measurement Categories II, III, or IV. NI USB-6008/6009 User Guide and Specifications ni.com...
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For information about the available collection and recycling scheme in a particular country, refer to ni.com/citizenship/weee National Instruments (RoHS) National Instruments RoHS ni.com/environment/rohs_china (For information about China RoHS compliance, go to ni.com/environment/rohs_china NI USB-6008/6009 User Guide and Specifications ni.com...
NI-DAQmx and NI-DAQmx software include example programs to help you get started programming with the NI USB-6008/6009. Modify example code and save it in an application, or use examples to develop a new application, or add example code to an existing application.
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The NI-DAQmx Base VI Reference Help contains VI reference and general information about measurement concepts. In LabVIEW, select Help»NI-DAQmx Base VI Reference Help. The NI-DAQmx Base C Function Reference Help contains C reference and general information about measurement concepts. In Windows, select Start»All Programs»National Instruments»NI-DAQmx Base»Documentation»C Function Reference Help. Note...
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Select Start»All Programs»National Instruments»NI-DAQ»NI-DAQmx Help. The NI-DAQmx C Reference Help describes the NI-DAQmx Library functions, which you can use with National Instruments data acquisition devices to develop instrumentation, acquisition, and control applications. Select Start»All Programs»National Instruments»NI-DAQ» Text-Based Code Support»NI-DAQmx C Reference Help.
National Instruments corporate headquarters is located at 11500 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 your service request at and follow the calling instructions or dial 512 795 8248.
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