Table Of Contents

PXI-2590 Specifications

    Last Modified: April 20, 2017

    This document lists specifications for the PXI-2590 (PXI-2590). All specifications are subject to change without notice. Visit for the most current specifications.


    4x1 multiplexer

    Refer to the NI Switches Help at for detailed topology information.

    About These Specifications

    Specifications characterize the warranted performance of the instrument under the stated operating conditions.

    Typical Specifications are specifications met by the majority of the instrument under the stated operating conditions and are tested at 23 °C ambient temperature. Typical specifications are not warranted.

    All voltages are specified in DC, ACpk, or a combination unless otherwise specified.


    The protection provided by the PXI-2590 can be impaired if it is used in a manner not described in this document.

    Input Characteristics

    Maximum switching voltage (channel-to-channel and channel-to-ground)

    24 V

    Maximum switching current

    1 A

    Maximum carry current

    1 A

    Maximum switching power

    24 W


    NI recommends against switching active RF signals. As a relay actuates, the channel is momentarily unterminated. Some RF sources can be damaged by reflections if their outputs are not properly terminated. Refer to your RF source documentation for more information.

    Maximum RF carry power

    10 W up to 900 MHz

    DC path resistance


    <0.1 Ω

    End of life

    >1 Ω

    Path resistance is a combination of relay contact resistance and trace resistance. Contact resistance typically remains low for the life of a relay. At the end of relay life, the contact resistance rises rapidly above 1.0 Ω.

    RF Performance Characteristics

    Characteristic impedance (Z0)

    50 Ω nominal

    Insertion loss

    ≤100 MHz

    <0.4 dB

    ≤500 MHz

    <0.9 dB

    ≤1.3 GHz

    <1.5 dB

    ≤2 GHz

    <3 dB


    ≤100 MHz


    ≤500 MHz


    ≤1.3 GHz


    ≤2 GHz


    Channel-to-channel isolation

    ≤500 MHz

    >60 dB

    ≤1.3 GHz

    >50 dB

    ≤2 GHz

    >30 dB

    Propagation delay

    <3 ns

    Rise time

    <300 ps

    Dynamic characteristics

    Relay operate time (at 20 °C)

    15 ms

    Release time (at 20 °C)

    15 ms

    Expected relay life


    5,000,000 cycles

    Electrical (maximum load)

    100,000 cycles

    Trigger characteristics

    Input trigger


    PXI trigger lines 0-7 and STAR

    Minimum pulse width

    70 ns

    Output trigger


    PXI trigger lines 0-7

    Pulse width

    1 μs

    Physical Characteristics

    Relay type

    Electromechanical, non-latching

    I/O connectors

    18 MCX jacks

    Contact material

    Gold-clad silver

    Dimensions (W × H × D)

    3 × 10 × 16 cm (0.8 × 3.9 × 6.3 in.)


    245 g (8.5 oz)


    Operating temperature

    0 °C to 50 °C

    Storage temperature

    -20 °C to 70 °C

    Relative humidity

    5% to 85%, noncondensing

    Pollution Degree


    Maximum altitude

    2,000 m

    Indoor use only.

    Shock and Vibration

    Operational Shock

    30 g peak, half-sine, 11 ms pulse (Tested in accordance with IEC 60068-2-27. Test profile developed in accordance with MIL-PRF-28800F.)

    Random Vibration


    5 Hz to 500 Hz, 0.3 grms


    5 Hz to 500 Hz, 2.4 grms (Tested in accordance with IEC 60068-2-64. Nonoperating test profile exceeds the requirements of MIL-PRF-28800F, Class 3.)

    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 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

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