Table Of Contents

PXIe-2532 Specifications

    Last Modified: April 21, 2017

    This document lists specifications for the PXIe-2532. All specifications are subject to change without notice.

    PXIe-2532 Specifications

    Specifications characterize the warranted performance of the instrument under the stated operating conditions. Data in this document are Specifications unless otherwise noted.

    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 PXIe-2532 can be impaired if it is used in a manner not described in this document.



    1-wire 4 x 128 matrix

    1-wire 8 x 64 matrix

    1-wire 16 x 32 matrix

    1-wire dual 4 x 64 matrix

    1-wire dual 8 x 32 matrix

    1-wire dual 16 x 16 matrix

    1-wire sixteen 2 x 16 matrix

    2-wire 4 x 64 matrix

    2-wire 8 x 32 matrix

    2-wire 16 x 16 matrix

    Input Characteristics

    Maximum switching voltage


    100 V


    100 V, CAT I


    This module is rated for Measurement Category I and intended to carry signal voltages no greater than 100 V. This module can withstand up to 500 V impulse voltage. Do not use this module for connection to signals or for measurements within Categories II, III, or IV. Do not connect to MAINs supply circuits (for example, wall outlets) of 115 or 230 VAC.


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

    Maximum current

    0.5 A (switching or carry, per channel)


    The maximum switching power is limited by the maximum switching current and the maximum voltage, and must not exceed 10 W.

    Maximum switching power

    10 W (per channel)

    Maximum carry current

    n/a (per channel)

    Maximum module current


    DC path resistance


    <1 Ω


    ≥2 Ω

    Open channel

    >1 × 109 Ω


    DC path resistance typically remains low for the life of the relay. At the end of relay life, the path resistance rapidly rises above 2 Ω. Load ratings apply to relays used within the specification before the end of relay life.

    Thermal EMF


    <50 µV


    <20 µV

    Bandwidth, typical (-3 dB, 50 Ω termination)

    1-wire row/column

    ≥30 MHz

    2-wire row/column

    ≥25 MHz

    Crosstalk, typical (50 Ω termination) Channel-to-channel

    10 kHz

    <-89 dB

    100 kHz

    <-73 dB

    1 MHz

    <-54 dB

    10 MHz

    <-36 dB

    Isolation, typical (50 Ω termination) Open channel

    10 kHz

    >91 dB

    100 kHz

    >71 dB

    1 MHz

    >51 dB

    10 MHz

    >32 dB

    Dynamic Characteristics

    Simultaneous drive limit

    64 relays

    Relay operate time

    0.25 ms


    Certain applications may require additional time for proper settling.

    Release time

    0.25 ms

    Typical relay life (no load)


    1 × 109 cycles

    Electrical (resistive, <10 pF load)

    10 V, 100 mA

    1 × 107 cycles

    20 V, 500 mA

    5 × 106 cycles

    100 V, 10 mA

    5 × 105 cycles


    Optional series protection resistance, available for the terminal blocks, increases the expected relay life at higher voltages. This series protection resistance shields the reed relays from the effects of cable and load capacitance. For more information, refer to the Reed Relay Protection tutorial at


    Reed relays are highly susceptible to damage caused by switching capacitive and inductive loads. Capacitive loads can cause high inrush currents while inductive loads can cause high flyback voltages. The addition of appropriate resistive protection can greatly improve contact lifetime. For more information about adding protection circuitry to a capacitive load, visit and enter the Info Code relaylifetime. For information about inductive loads, enter the Info Code relayflyback.


    The relays used in the PXIe-2532 are field replaceable.

    Trigger Characteristics

    Input trigger


    PXI trigger lines <0...7>

    Minimum pulse width

    150 ns


    The PXIe-2532 can recognize trigger pulse widths less than 150 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



    NI advises against installing reed relay modules directly adjacent to an embedded controller with a magnetic hard drive because of the sensitivity of reed relays and the possibility of interference.

    Relay contact material


    I/O connectors

    2, 160 pos, Samtec BTE-EM series


    Terminal block connectivity is with standard 0.050 inch pitch headers.

    Power requirement

    5 V

    10 W

    3.3 V

    2 W

    PXI Express

    12 V

    15 W

    3.3 V

    2 W

    Dimensions (L × W × H)

    3U, one slot, PXI/cPCI module, PXI Express compatible 18.5 × 2.0 × 13.0 cm (7.3 × 0.8 × 5.1 in.)


    454 g (1 lb)


    Operating temperature

    0 °C to 55 °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


    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

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