Table Of Contents

FD-11603 Specifications

    Last Modified: February 7, 2019


    Specifications are typical and valid from -40 °C to +85 °C unless otherwise noted.

    Input Characteristics

    Number of channels

    8 analog input channels


    Galvanic isolation between channels and to chassis

    Input voltage range (AI+ to AI-)

    ±10.5 V

    ADC resolution

    24 bits

    Type of ADC

    Delta-Sigma (with analog prefiltering)

    Sample mode


    Timebases (fM)[1]


    13.1072 MHz, 12.8 MHz, 12.288 MHz, 10.24 MHz


    ±30 ppm maximum

    Sampled data rate range (fs)


    500 Samples/s


    102.4 kSamples/s

    Sampled data rates (fs)

    Refer to the following table for sample data rates supported for each timebase

    Table 1. Timebases (fM) and Supported Sampled Data Rates (fs), (kSamples/s)
    13.1072 MHz 12.8 MHz (Default) 12.288 MHz 10.24 MHz
    102.4 100.0 96.0 80.0
    51.2 50.0 48.0 40.0
    34.133 33.333 32.0 26.667
    25.6 25.0 24.0 20.0*
    20.48 20.0 19.2 16.0
    17.067 16.667 16.0* 13.333
    12.8 12.5 12.0 10.0*
    10.24 10.0 9.6 8.0
    8.533 8.333 8.0* 6.667
    6.4 6.25 6.0 5.0*
    5.12 5.0 4.8 4.0
    4.267 4.167 4.0* 3.333
    3.2 3.125 3.0 2.5
    2.56 2.5 2.4 2.0
    2.133 2.083 2.0* 1.667
    1.6 1.563 1.5 1.25*
    1.28 1.25 1.2 1.0
    1.067 1.042 1.0* 0.833
    0.8 0.781 0.75 0.625
    0.64 0.625 0.6 0.5
    Note: For sample rates that can be obtained using two different timebases, the lowest noise (highest resolution) option is indicated with an asterisk (*).

    Input impedance (AI+ to AI-)

    >1 GΩ

    Input capacitance (AI+ to AI-)

    440 pF

    Table 2. Accuracy
    Temperature Gain Error (% of Reading) Offset Error (% of Range, mV)[2]
    5 °C to 40 °C, typical 0.013% 0.001%, 0.105 mV
    5 °C to 40 °C, maximum 0.037% 0.01%, 1.05 mV
    -40 °C to 85 °C, maximum 0.062% 0.02%, 2.1 mV
    Sampled data rate noise

    1 kSample/s

    7 μV RMS

    10 kSamples/s

    20 μV RMS

    102.4 kSamples/s

    40 μV RMS


    Gain drift

    ±4 ppm/°C

    Offset drift

    ±5 μV/°C

    Gain mismatch (channel-to-channel, 40 kHz)

    0.034 dB maximum

    Phase mismatch (channel-to-channel)

    0.02°/kHz maximum

    Phase nonlinearity (fs = 102.4 kSamples/s)

    0.1° maximum

    Input delay

    36/fs + 1.65 μs

    Input delay tolerance

    ±150 ns



    DC to 0.4 · fs


    0 kHz to 10 kHz

    -0.02 dB maximum

    0 kHz to 20 kHz

    -0.04 dB maximum

    0 kHz to 40 kHz

    -0.1 dB maximum



    At or above 0.5 · fs


    100 dB

    Alias-free bandwidth

    0.5 · fs

    Crosstalk (1 kHz)

    -110 dB

    CMRR to chassis/earth (fin = 60 Hz)

    130 dB

    Spurious Free Dynamic Range (SFDR), (1 kHz, -60 dBFS)

    130 dBFS

    Total Harmonic Distortion (THD), (1 kHz, -1 dBFS)

    -102 dB


    864,132 hours at 25 °C; Bellcore Issue 6, Method 1, Case 3, Limited Part Stress Method

    Time-Based Triggers


    Start Trigger, Sync Pulse

    Timing and Synchronization


    IEEE 802.1AS for network synchronization over 1000 Base-TX, full-duplex

    Network synchronization accuracy[3]

    <1 μs

    Network synchronization accuracy with optimized configuration[4]

    <100 ns

    Network Interface

    Network protocols


    Network ports used

    HTTP:80 (configuration only), TCP:3580; UDP:5353 (configuration only), TCP:5353 (configuration only); TCP:31415; UDP:7865 (configuration only), UDP:8473 (configuration only)

    Network IP configuration

    DHCP + Link-Local, DHCP, Static, Link-Local

    Default MTU size

    1500 bytes


    Number of ports

    2 8-pin X-coded M12 ports, internally switched[5]

    Network interface

    1000 Base-TX, full-duplex; 1000 Base-TX, half-duplex; 100 Base-TX, full-duplex; 100 Base-TX, half-duplex; 10 Base-T, full-duplex; 10 Base-T, half-duplex

    Communication rates

    10/100/1000 Mbps, auto-negotiated

    Maximum cabling distance

    100 m/segment

    Maximum hops per line[6]


    Power Requirements


    The protection provided by the FD-11603 can be impaired if it is used in a manner not described in the FD-11603 User Guide.

    Voltage input range


    9 V DC to 30 V DC


    Up to 30 V DC

    Maximum device power consumption[7]

    7.5 W

    Power input connector

    5-pin L-coded male M12 connector

    Power output connector

    5-pin L-coded female M12 connector

    Current Limits


    Exceeding the current limits may cause damage to the device. Stay below a maximum of 10 A shared between both Input and Aux terminals.

    Power IN/OUT terminals


    10 A maximum


    10 A maximum total (combined with Vin)

    Recommended external overcurrent protection

    16 A, slow blow fuse

    Physical Characteristics


    198.5 mm × 77.4 mm × 47.1 mm (7.8 in. × 3.0 in. × 1.9 in.)


    1.2 kg (2 lb 10 oz)

    Input connection




    5-pin A-coded M12 connectors

    Torque for M12 connectors (power, Ethernet, input connections)

    0.6 N · m (5.31 lb · in.)

    To clean the device, wipe it with a dry towel.


    Calibration interval

    1 year


    Refer to the FD-11603 User Guide for more information about meeting these specifications.

    Operating temperature

    -40 °C to 85 °C

    Storage temperature

    -40 °C to 100 °C


    Failure to follow the mounting instructions in the FD-11603 User Guide can cause temperature derating.

    Ingress protection


    Operating humidity

    Up to 100% relative humidity, condensing or noncondensing

    Pollution Degree


    Maximum altitude

    5,000 m


    M12 connectors must be mated to cables or have caps installed on them to meet IP65/IP67 requirements. Cover the unused connectors with the included plastic caps whenever water, dust, or dirt are present.


    Avoid long periods of exposure to sunlight.

    To meet the following specifications, you must panel mount the system.

    Operating vibration


    10 g RMS, 5 Hz to 2,000 Hz


    10 g, 5 Hz to 2,000 Hz

    Operating shock

    100 g, 11 ms half sine, 3 shocks at 6 orientations, 18 total

    40 g, 6 ms half sine, 4,000 shocks at 6 orientations, 24,000 total

    Environmental Standards

    This model meets the requirements of the following electrical equipment environmental standards for measurement, control, and laboratory use:

    • IEC 60068-2-1
    • IEC 60068-2-2
    • IEC 60068-2-6
    • IEC 60068-2-27
    • IEC 60068-2-30
    • IEC 60068-2-64

    Safety Voltages

    Connect only voltages that are within the following limits:

    Channel-to-channel isolation

    Continuous working voltage[8]

    60 V DC (Dry Locations); 35 V DC (Wet Locations)

    Transient overvoltage[9]

    1,000 V RMS, verified by 5 s withstand

    Channel-to-earth ground isolation

    Continuous working voltage

    60 V DC (Dry Locations); 35 VDC (Wet Locations)

    Transient overvoltage

    1,000 V RMS, verified by 5 s withstand

    Overvoltage protection[10]

    ±30 V between any two pins on the connector

    These test and measurement circuits are rated for measurements performed on circuits not directly connected to the electrical distribution system referred to as MAINS.

    MAINS is a hazardous live electrical supply system to which equipment is designed to be connected to for the purpose of powering equipment. This product is rated for measurements of voltages from specially protected secondary circuits. Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated low-voltage sources, and electronics.


    Do not connect the FD-11603 to signals or use for measurements within Measurement Categories II, III, or IV, or for measurements on MAINs circuits or on circuits derived from Overvoltage Category II, III, or IV which may have transient overvoltages above what the product can withstand. The product must not be connected to circuits that have a maximum voltage above the continuous working voltage, relative to earth or to other channels, or this could damage and defeat the insulation. The product can only withstand transients up to the transient overvoltage rating without breakdown or damage to the insulation. An analysis of the working voltages, loop impedances, temporary overvoltages, and transient overvoltages in the system must be conducted prior to making measurements.


    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; Industrial 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

    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 and certifications, and additional information, refer to the Online Product Certification section.


    To ensure the specified EMC performance, operate this product only with shielded Ethernet cables.

    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 Base clocks can be synchronized with other FieldDAQ devices using the network synchronization feature.
    • 2 Range equals 10.5 V.
    • 3 I/O synchronization is system-dependent. Assumes the devices are connected in a line topology. For information about network synchronization accuracy, visit and enter Info Code syncacc.
    • 4 I/O synchronization is system-dependent. Assumes a system containing one hop. For information about achieving high accuracy synchronization, visit and enter Info Code fdsync.
    • 5 This allows for line topologies or network redundancy.
    • 6 With default software configuration. For information about creating reliable Ethernet-based systems, visit and enter Info Code fdenet.
    • 7 The total amount of power drawn by the device from the power input connector, including power delivered to external sensors.
    • 8 Working voltage rating is the highest RMS value of the AC or DC voltage across the insulation that can continuously occur when the equipment is supplied at rated voltage.
    • 9 Withstand rating is the highest RMS value of the AC or DC voltage the insulation can withstand without flashover or breakdown for a specified time.
    • 10 Temporary Overvoltage rating is the overvoltage of relatively long duration.

    Recently Viewed Topics