Table Of Contents

USRP-2945 Specifications

    Last Modified: June 15, 2020


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

    Characteristics 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 expected performance met by a majority of the models.
    • Nominal specifications describe parameters and attributes that may be useful in operation.

    Specifications are Characteristics unless otherwise noted.


    Specifications are valid at 25 °C unless otherwise noted.


    Number of channels


    Frequency range

    10 MHz to 6 GHz

    Frequency step

    <1 kHz

    Gain range[1]

    0 dB to 95 dB

    Gain step

    1 dB

    Maximum input power (Pin)

    +10 dBm

    Frequency accuracy [2]

    2.5 ppm

    Maximum instantaneous real-time bandwidth[3]

    80 MHz

    Maximum I/Q sample rate

    100 MS/s

    Analog-to-digital converter (ADC)


    14 bit


    88 dB

    Table 1. Noise Figure
    Frequency Noise Figure[4] (dB)
    10 MHz to 3 GHz <5
    3 GHz to 5 GHz <4
    5 GHz to 6 GHz <8

    LO Input/Export Connectors

    LO OUT 1

    Minimum RF power level

    0 dBm

    Nominal RF power level

    +3 dBm


    Minimum RF power level

    -12 dBm

    Nominal RF power level

    +5 dBm

    LO IN 0

    Minimum RF power level

    0 dBm

    Nominal RF power level

    +2 dBm

    Maximum RF power level

    +20 dBm


    Minimum RF power level

    -10 dBm

    Nominal RF power level

    -5 dBm

    Maximum RF power level

    +10 dBm

    LO IN 1

    Minimum RF power level

    0 dBm

    Nominal RF power level

    +2 dBm

    Maximum RF power level

    +20 dBm


    Minimum RF power level

    -10 dBm

    Nominal RF power level

    -5 dBm

    Maximum RF power level

    +10 dBm



    The protection provided by this product may be impaired if it is used in a manner not described in this document.

    Input voltage

    9 V to 16 V, DC

    Input current

    7.5 A, maximum

    Typical power consumption

    38 W to 44 W, varies by application


    You must use an LPS or Class 2 power supply with the USRP-2945. The power supply must also meet any safety and compliance requirements for the country of use.

    Onboard DRAM

    Memory size

    1,024 MB

    Physical Characteristics

    If you need to clean the module, wipe it with a dry towel.

    Physical dimensions

    (L × W × H)

    26.67 cm × 4.06 cm × 21.84 cm (10.5 in. × 1.6 in. × 8.6 in.)


    1.588 kg (3.50 lb)


    Ambient temperature range

    0 °C to 55 °C (tested in accordance with IEC 60068-2-1 and IEC 60068-2-2)

    Maximum altitude

    2,000 m (800 mbar) (at 25 °C ambient temperature)

    Pollution Degree


    Indoor use only.

    Operating Environment

    Operating temperature

    23 °C ± 5 °C, room temperature

    Relative humidity range

    10% to 90%, noncondensing (tested in accordance with IEC 60068-2-56)

    Compliance and Certifications


    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, 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  

    At the end of the product life cycle, all NI products must be disposed of according to local laws and regulations. For more information about how to recycle NI products in your region, visit



    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 The received signal amplitude resulting from the gain setting varies over the frequency band and among devices.
    • 2 Frequency accuracy is based on temperature-compensated crystal oscillator (TCXO) vendor specifications and is not measured. Alternatively, you can incorporate an external reference source to provide a more precise frequency Reference Clock and to achieve better frequency accuracy.
    • 3 Each USRP-2945 receiver path has 80 MHz of bandwidth throughout the full frequency range of the device.
    • 4 Noise figure values are based on 0 dB RF attenuation and maximum gain settings.

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