Table Of Contents

USB-6008 Specifications

    Last Modified: November 6, 2017


    Warranted specifications describe the performance of a model under stated operating conditions and are covered by the model warranty.

    The following characteristic specifications describe values that are relevant to the use of the model under stated operating conditions but are not covered by the model warranty.

    • Typical specifications describe the performance met by a majority of models.
    • Nominal specifications describe an attribute that is based on design, conformance testing, or supplemental testing.

    Specifications are Typical unless otherwise noted.


    Specifications are valid at 25 °C unless otherwise noted.

    Analog Input

    Analog inputs




    8, software-selectable

    Input resolution


    12 bits


    11 bits

    Maximum sample rate (aggregate)

    10 kS/s, system dependent

    Converter type

    Successive approximation


    512 bytes

    Timing resolution

    41.67 ns (24 MHz timebase)

    Timing accuracy

    100 ppm of actual sample rate

    Input range


    ±20 V[1], ±10 V, ±5 V, ±4 V, ±2.5 V, ±2 V, ±1.25 V, ±1 V


    ±10 V

    Working voltage

    ±10 V

    Input impedance

    144 kΩ

    Overvoltage protection

    ±35 V

    Trigger source

    Software or external digital trigger

    System noise[2]

    ±20 V range

    5 mVrms

    ±1 V range

    0.5 mVrms

    Single-ended, ±10 V range

    5 mVrms

    Table 1. Absolute Accuracy at Full Scale, Differential
    Range (V) Typical at 25 °C (mV) Maximum over Temperature (mV)
    ±20 14.7 138
    ±10 7.73 84.8
    ±5 4.28 58.4
    ±4 3.59 53.1
    ±2.5 2.56 45.1
    ±2 2.21 42.5
    ±1.25 1.70 38.9
    ±1 1.53 37.5

    Input voltages may not exceed the working voltage range.

    Table 2. Absolute Accuracy at Full Scale, Single-Ended
    Range (V) Typical at 25 °C (mV) Maximum over Temperature (mV)
    ±10 14.7 138

    Analog Output

    Analog outputs


    Output resolution

    12 bits

    Maximum update rate

    150 Hz, software-timed

    Output range

    0 V to +5 V

    Output impedance

    50 Ω

    Output current drive

    5 mA

    Power-on state

    0 V

    Slew rate

    1 V/μs

    Short circuit current

    50 mA

    Absolute accuracy (no load)


    7 mV

    Maximum at full scale

    36.4 mV

    Digital I/O

    Digital I/O lines


    8 lines


    4 lines

    Direction control

    Each channel individually programmable as input or output

    Output driver type[3]

    Open collector



    Absolute maximum voltage range

    -0.5 V to 5.8 V with respect to GND

    Pull-up resistor

    4.7 kΩ to 5 V

    Power-on state


    Table 3. Digital Logic Levels
    Level Minimum Maximum
    Input low voltage -0.3 V 0.8 V
    Input high voltage 2.0 V 5.8 V
    Input leakage current 50 μA
    Output low voltage (I = 8.5 mA) 0.8 V
    Output high voltage, active drive (I = -8.5 mA) 2.0 V 3.5 V
    Output high voltage, open collector (I = -0.6 mA, nominal) 2.0 V 5.0 V
    Output high voltage, open collector (I = -8.5 mA, with external pull-up resistor) 2.0 V

    External Voltage

    +5 V output (200 mA maximum)


    +4.85 V


    +5 V

    +2.5 V output (1 mA maximum)

    +2.5 V

    +2.5 V accuracy

    0.25% maximum

    Reference temperature drift

    50 ppm/°C maximum

    Event Counter

    Number of counters



    32 bits

    Counter measurements

    Edge counting (falling-edge)

    Counter direction

    Count up

    Pull-up resistor

    4.7 kΩ to 5 V

    Maximum input frequency

    5 MHz

    Minimum high pulse width

    100 ns

    Minimum low pulse width

    100 ns

    Input high voltage

    2.0 V

    Input low voltage

    0.8 V

    Bus Interface

    USB specification

    USB 2.0 full-speed (12 Mb/s)

    Power Requirements

    USB, 4.10 VDC to 5.25 VDC


    80 mA


    500 mA

    USB suspend


    300 μA


    500 μA

    Physical Characteristics


    Without connectors

    63.5 mm × 85.1 mm × 23.2 mm (2.50 in. × 3.35 in. × 0.91 in.)

    With connectors

    81.8 mm × 85.1 mm × 23.2 mm (3.22 in. × 3.35 in. × 0.91 in.)


    Without connectors

    54 g (1.9 oz)

    With connectors

    84 g (3 oz)

    USB connector

    USB series B receptacle (1)

    I/O connectors


    16-position screw terminal plugs (2)

    Screw-terminal wiring

    16 AWG to 28 AWG

    Torque for screw terminals

    0.22 N · m to 0.25 N · m (2.0 lb · in. to 2.2 lb · in.)

    If you need to clean the module, wipe it with a dry towel.
    Figure 1. USB-6008 Dimensions

    Safety Voltages

    Connect only voltages that are within these limits.


    ±30 V max, Measurement Category I

    Measurement Category I is for measurements performed on circuits not directly connected to the electrical distribution system referred to as MAINS voltage. MAINS is a hazardous live electrical supply system that powers equipment. This category is for measurements of voltages from specially protected secondary circuits. Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated low-voltage sources, and electronics


    Do not use this module for connection to signals or for measurements within Measurement Categories II, III, or IV


    Measurement Categories CAT I and CAT O (Other) are equivalent. These test and measurement circuits are not intended for direct connection to the MAINS building installations of Measurement Categories CAT II, CAT III, or CAT IV.


    Temperature (IEC 60068-2-1 and IEC 60068-2-2)


    0 °C to 55 °C


    -40 °C to 85 °C

    Humidity (IEC 60068-2-56)


    5% RH to 95% RH, noncondensing


    5% RH to 90% RH, noncondensing

    Pollution Degree (IEC 60664)


    Maximum altitude

    2,000 m

    Indoor use only.


    This product is designed to meet the requirements of the following electrical equipment safety standards for measurement, control, and laboratory use:

    • IEC 61010-1, EN 61010-1
    • UL 61010-1, CSA C22.2 No. 61010-1

    For UL and other safety certifications, refer to the product label or the Online Product Certification section.

    Electromagnetic Compatibility

    This product meets the requirements of the following EMC standards for electrical equipment for measurement, control, and laboratory use:

    • EN 61326-1 (IEC 61326-1): Class A emissions; Basic immunity
    • EN 55011 (CISPR 11): Group 1, Class A emissions
    • EN 55022 (CISPR 22): Class A emissions
    • EN 55024 (CISPR 24): Immunity
    • AS/NZS CISPR 11: Group 1, Class A emissions
    • AS/NZS CISPR 22: Class A emissions
    • FCC 47 CFR Part 15B: Class A emissions
    • ICES-001: Class A emissions

    In the United States (per FCC 47 CFR), Class A equipment is intended for use in commercial, light-industrial, and heavy-industrial locations. In Europe, Canada, Australia and New Zealand (per CISPR 11) Class A equipment is intended for use only in heavy-industrial locations.


    Group 1 equipment (per CISPR 11) is any industrial, scientific, or medical equipment that does not intentionally generate radio frequency energy for the treatment of material or inspection/analysis purposes.


    For EMC declarations and certifications, and additional information, refer to the Online Product Certification section.

    CE Compliance

    This product meets the essential requirements of applicable European Directives, as follows:

    • 2014/35/EU; Low-Voltage Directive (safety)
    • 2014/30/EU; Electromagnetic Compatibility Directive (EMC)

    Online Product Certification

    Refer to the product Declaration of Conformity (DoC) for additional regulatory compliance information. To obtain product certifications and the DoC for this product, visit, search by model number or product line, and click the appropriate link in the Certification column.

    Environmental Management

    NI is committed to designing and manufacturing products in an environmentally responsible manner. NI recognizes that eliminating certain hazardous substances from our products is beneficial to the environment and to NI customers.

    For additional environmental information, refer to the Minimize Our Environmental Impact web page at This page contains the environmental regulations and directives with which NI complies, as well as other environmental information not included in this document.

    Waste Electrical and Electronic Equipment (WEEE)

    EU Customers  

    This symbol indicates that waste products should be disposed of separately from municipal household waste according to WEEE Directive 2002/96/EC of the European Parliament and the Council on waste electrical and electronic equipment (WEEE). All products at the end of their life cycle must be sent to a WEEE collection and recycling center. Proper WEEE disposal reduces environmental impact and the risk to human health due to potentially hazardous substances used in such equipment. Your cooperation in proper WEEE disposal will contribute to the effective usage of natural resources. For information about the available collection and recycling scheme in a particular country, go to



    National Instruments符合中国电子信息产品中限制使用某些有害物质指令(RoHS)。关于National Instruments中国RoHS合规性信息,请登录。(For information about China RoHS compliance, go to

    • 1 ±20 V means that |AI+ – (AI–)| ≤ 20 V. However, AI+ and AI– must both be within ±10 V of GND. Refer to the Taking Differential Measurements section of the NI USB-6008/6009 User Guide for more information.
    • 2 System noise measured at maximum sample rate.
    • 3 This document uses NI-DAQmx naming conventions. Open-drain is called open collector and push-pull is called active drive.

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