Table Of Contents

PXIe-2748 Specifications

Version:
    Last Modified: November 30, 2021

    This document lists specifications for the PXIe-2748. All specifications are subject to change without notice.

    Definitions

    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 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.

    Conditions

    Specifications are valid at 23 °C unless otherwise noted.

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

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    Caution  

    The protection provided by the PXIe-2748 can be impaired if it is used in a manner not described in this document.

    Topology

    Topology

    16 × 1 multiplexer

    Input Characteristics

    Maximum switching voltage

    30 V

    Maximum switching current (per channel)

    0.5 A

    Maximum carry current (per channel)

    0.5 A

    Maximum RF power

    10 W

    Minimum switch load

    0 dBm

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    Caution  

    The switching power is limited by the maximum switching current and the maximum voltage. Channel-to-common switching power must not exceed 10 W.

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    Note  

    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.

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    Note  

    Switching active RF signals below 0 dBm may degrade signal integrity and decrease relay life. For more information about switching active RF signals, visit ni.com/info and enter Info Code RFSwitching.

    Typical DC path resistance

    Initial

    <1 Ω

    End-of-life

    ≥2 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

    ≤1 GHz

    1.5 dB

    ≤2.7 GHz

    3 dB

    Voltage standing wave ratio (VSWR)

    ≤1 GHz

    1.4

    ≤2.7 GHz

    1.6

    ≤3 GHz

    1.8

    Typical isolation

    ≤1 GHz

    >60 dB

    ≤2.7 GHz

    >40 dB

    Typical channel-to-channel skew

    <160 ps

    Refer to the following figures for typical insertion loss, typical VSWR, and typical isolation, respectively.

    Figure 1. Typical Insertion Loss
    Figure 2. Typical VSWR
    Figure 3. Typical Isolation

    Dynamic Characteristics

    Maximum relay operate time

    10 ms

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    Note  

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

    Expected mechanical relay life

    1 × 107 cycles

    Physical Characteristics

    Relay type

    Electromechanical, latching

    I/O connectors

    17 MCX jacks, gold plated

    PXI Express power requirement

    3.96 W at 3.3 V, 0.2 W at 12 V

    Dimensions (L × W × H)

    3U, one slot, PXI/cPCI module 21.6 cm × 2.0 cm × 13.0 cm (8.5 in. × 0.8 in. × 5.1 in.)

    Weight

    330 g (11.30 oz)

    Environment

    Operating temperature

    0 °C to 55 °C

    Storage temperature

    -40 °C to 70 °C

    Relative humidity

    5% to 85%, noncondensing

    Pollution Degree

    2

    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

    Operating

    5 Hz to 500 Hz, 0.3 grms

    Nonoperating

    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

    Safety Compliance Standards

    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
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    Note  

    For safety certifications, refer to the product label or the Product Certifications and Declarations 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
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    Note  

    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.

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    Note  

    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.

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    Note  

    For EMC declarations, certifications, and additional information, refer to the Product Certifications and Declarations 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)

    Product Certifications and Declarations

    Refer to the product Declaration of Conformity (DoC) for additional regulatory compliance information. To obtain product certifications and the DoC for NI products, visit ni.com/product-certifications, search by model number, and click the appropriate link.

    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 Engineering a Healthy Planet web page at ni.com/environment. This page contains the environmental regulations and directives with which NI complies, as well as other environmental information not included in this document.

    EU and UK Customers

    • Waste Electrical and Electronic Equipment (WEEE)—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 ni.com/environment/weee.

    电子信息产品污染控制管理办法(中国RoHS)

    • 中国RoHSNI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NI中国RoHS合规性信息,请登录 ni.com/environment/rohs_china。(For information about China RoHS compliance, go to ni.com/environment/rohs_china.)

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