Table Of Contents

PXI-2565 Specifications

    Last Modified: April 26, 2017

    This document lists specifications for the PXI-2565. All specifications are subject to change without notice.


    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 Typical unless otherwise noted.


    Specifications are valid at 23 °C unless otherwise noted.

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


    The protection provided by the PXI-2565 can be impaired if it is used in a manner not described in this document.



    16-channel SPST

    Input Characteristics

    Maximum switching voltage


    125 V DC, 250 V AC


    125 V DC, 250 V AC, CAT II[1]


    This module is rated for Measurement Category II and intended to carry signal voltages no greater than 250 V AC/125 V DC. This module Features 1400 Vrms isolation between input signals and the backplane as verified by a dielectric withstand test, one minute maximum. Do not use this module for connection to signals or for measurements within Categories III or IV. Do not connect to Category II supply circuits (for example, wall outlets) greater than 250 V AC; do not connect to Category III MAINs circuits.


    When hazardous voltages (>42.4 Vpk/60 V DC) are present on any relay terminal, safety low-voltage (≤42.4 Vpk/60 V DC) cannot be connected to any other relay terminal.


    The switching power is limited by the maximum switching current, the maximum voltage, and must not exceed 150 W, 1750 VA.

    Maximum switching current

    5 A at 30 V DC

    Maximum switching current (resistive, per channel)

    7 A at 250 V AC

    Maximum switching power (per channel)

    150 W, 1750 VA

    Maximum carry current (per channel)

    5 A DC, 7A AC

    Minimum switch load

    10 mA, 5 V DC


    Switching inductive loads (for example, motors and solenoids) can produce high voltage transients in excess of the rated voltage of the module. Without additional protection, these transients can interfere with module operation and impact relay life. For more information about transient suppression, visit and enter the Info Code induct.

    DC path resistance


    <0.03 Ω

    End of life

    >1 Ω

    DC path resistance typically remains low for the life of the relay. At the end of relay life, the path resistance rises rapidly above 1 Ω. Load ratings apply to relays used within the specification before the end of relay life.

    Power dissipation

    All relays open

    1.75 W

    All relays closed, 0 A per channel

    7 W

    All relays closed, 5 A per channel

    21.5 W

    All relays closed, 7 A per channel

    35.0 W

    Dynamic Characteristics

    Relay operate time (at 20 °C)

    5 ms, typical

    10 ms, maximum

    Release time (at 20 °C)

    4 ms, typical

    5 ms, maximum


    Certain applications may require additional time for proper settling. Refer to the NI Switches Help at for information about including additional settling time.

    Expected relay life


    5 × 107 cycles

    Electrical (maximum load)

    1 × 105 cycles


    The relays used in the PXI-2565 are field replaceable. Refer to the NI Switches Help at for information about replacing a failed relay.

    Trigger Characteristics

    Input trigger


    PXI trigger lines <0...7>

    Minimum pulse width

    70 ns


    The PXI-2565 can recognize trigger pulse widths less than 70 ns if you disable digital filtering. Refer to the NI Switches Help at for information about disabling digital filtering.

    Output trigger


    PXI trigger lines <0...7>

    Pulse width

    Programmable (1 µs to 62 µs)

    Physical Characteristics

    Relay type

    Electromechanical, non-latching

    Relay contact material

    Gold-flash over silver alloy

    I/O connector

    16 × 2 minicombicon header

    PXI power requirement

    5.5 W at 5 V

    Dimensions (L × W × H)

    3U, two-slot, PXI/cPCI, 21.6 × 4.1 × 13.0 cm (8.5 × 1.6 × 5.1 in.)


    390 g (14 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 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 Measurement Category II is for measurements performed on circuits directly connected to the electrical distribution system. This category refers to local-level electrical distribution, such as that provided by a standard wall outlet, for example, 115 V for U.S. or 230 V for Europe.

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