Table Of Contents

PXI-2541 Specifications

Version:
    Last Modified: April 14, 2017

    This document lists specifications for the PXI-2541 matrix module. All specifications are subject to change without notice. Visit ni.com/manuals for the most current specifications.

    PXI-2541 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.

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    Caution  

    The protection provided by the PXI-2541 can be impaired if it is used in a manner not described in this document.

    Topology

    Refer to the NI Switches Help at ni.com/manuals for detailed topology information.

    Topology

    8 × 12 matrix

    Input Characteristics

    Maximum switching voltage

    60 V DC (42.4 Vpk)

    Maximum switching or carry current (per channel)

    0.5 A

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    Caution  

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

    Maximum DC switching or carry power (per channel)

    10 W

    Maximum RF power (per channel, 50 Ω system)

    10 W

    Simultaneous channels at maximum RF power (up to 300 MHz)

    3

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    Note  

    Maximum RF power derates as frequency and number of simultaneous channels increase and must not exceed the values shown in the following figures.

    Figure 1. Maximum RF Input Power
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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. Consult your RF source documentation for more information.

    DC path resistance

    Initial

    <2.1 Ω, typical

    End-of-life

    ≥3.1 Ω, typical

    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 3.1 Ω.

    RF Performance Characteristics

    Characteristic impedance (Z0)

    50 Ω, nominal

    Insertion loss (≤300 MHz)

    Row In - Column

    <3 dB (<2.1 dB, typical)

    Row In - Row Out

    <1 dB (<0.5 dB, typical)

    Refer to the following figure for the insertion loss of the PXI-2541.

    Figure 2. PXI-2541 Insertion Loss, Typical
    VSWR (≤300 MHz)

    Row In - Column

    <2.2 (<1.6, typical)

    Row In - Row Out

    <1.8 (<1.5, typical)

    Refer to the following figure for the VSWR of the PXI-2541.

    Figure 3. PXI-2541 VSWR, Typical

    The PXI-2541 supports column expansion. Row Out connectors of one module can be connected to the Row In connectors of another module to create larger matrices. The following figure shows the effect of matrix expansion on R0C0 insertion loss when cable part number 188374-0R15 is used to cascade 2, 4, 6, and 8 modules. VSWR for these cases remains below 1.8 past 300 MHz. Refer to the NI Switches Help at ni.com/manuals for more information about matrix expansion.

    Figure 4. PXI-2541Expansion Insertion Loss
    Open CH isolation (≤300 MHz)

    Row In - Column

    >75 dB, typical

    Row In - Row Out

    >30 dB, typical

    Refer to the following figure for the channel-to-channel isolation of the PXI-2541.

    Figure 5. PXI-2541 Open Channel Isolation, Typical
    Crosstalk

    ≤300 MHz

    <-35 dB, typical

    Refer to the following figure for the crosstalk of the PXI-2541.

    Figure 6. PXI-2541 Crosstalk, Typical
    Propagation delay

    Row In - Column

    <6 ns, typical

    Row In - Row Out

    <1 ns, typical

    CH-CH skew

    Row In - Column

    <2.0 ns, typical

    Row In - Row Out

    <0.1 ns, typical

    Dynamic Characteristics

    Simultaneous relay drive limit

    40 relays

    Maximum operate time

    0.25 ms

    Maximum release time

    0.25 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 information about including additional settling time.

    Relay life

    Mechanical

    1 × 107 cycles, typical

    Electrical (resistive, <10 pF load, DC or 50 Ω RF systems)

    10 V, 100 mA

    1 × 107 cycles, typical

    20 V, 500 mA

    5 × 106 cycles, typical

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    Note  

    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 protection can greatly improve contact lifetime. For more information about adding protection circuitry to a capacitive load, visit ni.com/info and enter the Info Code relaylifetime. For information about inductive loads, enter the Info Code relayflyback.

    Trigger Characteristics

    Input trigger

    Sources

    PXI trigger lines <0...7>

    Minimum pulse width

    150 ns

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    Note  

    The PXI-2541 can recognize trigger pulse widths less than 150 ns by disabling digital filtering. For information about disabling digital filtering, refer to the NI Switches Help at ni.com/manuals.

    Output trigger

    Destinations

    PXI trigger lines <0...7>

    Pulse width

    Programmable (1 μs to 62 μs)

    Physical Characteristics

    Relay type

    Reed, non-latching

    Relay contact material

    Rhodium

    I/O connectors

    28 MCX jacks

    Power requirement

    PXI

    10 W at 5 V

    2 W at 3.3 V

    PXI Express

    10 W at 12 V

    2.5 W at 3.3 V

    Dimensions (L × W × H)

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

    Weight

    410 g (14.46 oz)

    Environment

    Operating temperature

    0 °C to 55 °C

    Storage temperature

    -20 °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

    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
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    Note  

    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
    • AS/NZS CISPR 11: Group 1, 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 and certifications, 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 ni.com/certification, 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 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.

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

    电子信息产品污染控制管理办法(中国RoHS)
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    中国客户  

    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 ni.com/environment/rohs_china。(For information about China RoHS compliance, go to ni.com/environment/rohs_china.)


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