Number of channels |
8 analog input channels |
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Isolation |
Galvanic isolation between channels and to chassis |
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Input range |
±38 mV/V |
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ADC resolution |
24 bits |
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Type of ADC |
Delta-Sigma (with analog prefiltering) |
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Sample mode |
Simultaneous |
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TEDS support |
IEEE 1451.4 TEDS Class 2 |
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Sampled data rates (fs) |
Refer to the following table for sample data rates supported for each timebase |
13.1072 MHz | 12.8 MHz (Default) | 12.288 MHz | 10.24 MHz |
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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 (*). |
Sampled Data Rate (kSamples/s) | Timebase (MHz) | Excitation | ||
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10 V | 5 V | 3 V | ||
102.4 | 13.1072 | 0.4 µV/V RMS | 0.8 µV/V RMS | 1.3 µV/V RMS |
10 | 10.24 | 0.12 µV/V RMS | 0.25 µV/V RMS | 0.4 µV/V RMS |
1 | 12.288 | 0.04 µV/V RMS | 0.08µV/V RMS | 0.14 µV/V RMS |
Temperature | Full- or Half-Bridge Mode[2] | Quarter-Bridge Mode[3] | |
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350 Ω | 120 Ω | ||
5 °C to 40 °C, typical | ±0.05% | ±0.15% | ±0.3% |
5 °C to 40 °C, maximum | ±0.15% | ±0.4% | ±0.8% |
-40 °C to 85 °C, maximum | ±0.20% | ±0.5% | ±1.0% |
Temperature | Excitation | ||
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10 V | 5 V | 3 V | |
5 °C to 40 °C, typical | ±1.5 µV/V | ±2 µV/V | ±3 µV/V |
5 °C to 40 °C, maximum | ±6 µV/V | ±8 µV/V | ±12 µV/V |
-40 °C to 85 °C, maximum | ±10 µV/V | ±13 µV/V | ±20 µV/V |
Note: Half- and quarter-bridge sensors and strain gages should remove offset errors by offset nulling to eliminate offset effects of lead wire resistance and sensor impedance tolerances. |
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Input delay |
36 /ƒs + 3.7 μs |
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Input delay tolerance |
±0.5 µs |
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Alias-free bandwidth |
0.50 · ƒs |
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Common-mode voltage, all signals to earth ground |
±60 V DC, Refer to Safety Voltages for restrictions on working and fault voltages. |
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Full-bridge mode common-mode voltage range, with respect to EX- |
Both inputs must be between 40% and 60% of the excitation voltage |
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Spurious Free Dynamic Range (SFDR) |
130 dB |
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Total Harmonic Distortion (THD), up to 8 kHz and ±5 mV/V |
-90 dB |
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Network protocols |
TCP/IP, UDP |
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[7] |
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[8] |
15 |
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Recommended external overcurrent protection |
16 A, slow blow fuse |
Dimensions |
198.5 mm × 77.4 mm × 47.1 mm (7.8 in. × 3.0 in. × 1.9 in.) |
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Weight |
1.2 kg (2 lb 10 oz) |
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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.
Refer to the FD-11637 User Guide for more information about meeting these specifications.
Operating temperature |
-40 °C to 85 °C |
Storage temperature |
-40 °C to 100 °C |
Ingress protection |
IP65/IP67 |
Operating humidity |
Up to 100% relative humidity, condensing or noncondensing |
Pollution Degree |
4 |
Maximum altitude |
5,000 m |
To meet the following specifications, you must panel mount the system.
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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 |
This model meets the requirements of the following electrical equipment environmental standards for measurement, control, and laboratory use:
Connect only voltages that are within the following limits:
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Overvoltage protection[13] |
±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-11637 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:
For UL and other safety certifications, refer to the product label or the Online Product Certification section.
This product meets the requirements of the following EMC standards for electrical equipment for measurement, control, and laboratory use:
For EMC declarations and certifications, and additional information, refer to the Online Product Certification section.
This product meets the essential requirements of applicable European Directives, as follows:
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.
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.
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.