cDAQ-9181
SPECIFICATIONS
NI cDAQ?-9181
NI CompactDAQ One-Slot Ethernet Chassis
These specifications are for the National Instruments CompactDAQ 9181 chassis only. These specifications are typical at 25 °C unless otherwise noted. For the C Series I/O module specifications, refer to the documentation for the C Series I/O module you are using. Analog Input
Input FIFO size127 samples ............................................................................
Maximum sample rate1Determined by the C Series I/O module ............................................................................
Timing accuracy250 ppm of sample rate ............................................................................
Timing resolution312.5 ns ............................................................................
Number of channels supported Determined by the C Series I/O module ............................................................................
Analog Output
Number of channels supported
Hardware-timed task
Onboard regeneration16
............................................................
Non-regeneration Determined by the C Series I/O module
............................................................
....................................................................
Non-hardware-timed task Determined by the C Series I/O module Maximum update rate
Onboard regeneration 1.6 MS/s (multi-channel, aggregate)
....................................................................
Non-regeneration Determined by the C Series I/O module
....................................................................
1Performance dependent on type of installed C Series I/O module and number of
channels in the task.
2Does not include group delay. For more information, refer to the documentation for
each C Series I/O module.
3Does not include group delay. For more information, refer to the documentation for
each C Series I/O module.
............................................................................
Timing accuracy50 ppm of sample rate
Timing resolution12.5 ns ............................................................................
Output FIFO size
Onboard regeneration8,191 samples shared among channels used ....................................................................
....................................................................
Non-regeneration127 samples
AO waveform modes Non-periodic waveform, periodic waveform ............................................................................
regeneration mode from onboard memory,
periodic waveform regeneration from host
buffer including dynamic update Digital Waveform Characteristics
Waveform acquisition (DI) FIFO127 samples ............................................................................
Waveform generation (DO) FIFO2,047 samples ............................................................................
Digital input sample clock frequency
System-dependent
Streaming to application
....................................................................
memory
Finite0 to 10 MHz
....................................................................
Digital output sample clock frequency
System-dependent
Streaming from application
....................................................................
memory
Regeneration from FIFO0 to 10 MHz
....................................................................
....................................................................
Finite0 to 10 MHz
Timing accuracy50 ppm ............................................................................
General-Purpose Counters/Timers ............................................................................
Number of counters/timers4
Resolution32 bits ............................................................................
Counter measurements Edge counting, pulse, semi-period, period, ............................................................................
two-edge separation, pulse width
Position measurements X1, X2, X4 quadrature encoding with ............................................................................
Channel Z reloading; two-pulse encoding
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............................................................................
Output applications Pulse, pulse train with dynamic updates,
frequency division, equivalent time sampling Internal base clocks80 MHz, 20 MHz, 100 kHz ............................................................................
External base clock frequency0 to 20 MHz ............................................................................
Base clock accuracy50 ppm ............................................................................
Output frequency0 to 20 MHz ............................................................................ ............................................................................
Inputs Gate, Source, HW_Arm, Aux, A, B, Z,
Up_Down
Routing options for inputs Any module PFI, analog trigger, many internal ............................................................................
signals
FIFO Dedicated 127-sample FIFO ............................................................................
Frequency Generator
Number of channels1 ............................................................................
Base clocks20 MHz, 10 MHz, 100 kHz ............................................................................
Divisors 1 to 16 (integers) ............................................................................
Base clock accuracy50 ppm ............................................................................ ............................................................................
Output Any module PFI terminal
Module PFI Characteristics
Functionality Static digital input, static digital output, timing ............................................................................
input, and timing output
Timing output sources4Many analog input, analog output, counter, ............................................................................
digital input, and digital output timing signals Timing input frequency0 to 20 MHz ............................................................................ ............................................................................
Timing output frequency0 to 20 MHz
4Actual signals available dependent on type of installed C Series I/O module.
NI cDAQ-9181 Specifications | ? National Instruments | 3
Digital Triggers
Source Any module PFI terminal ............................................................................
Polarity Software-selectable for most signals ............................................................................
Analog input function Start Trigger, Reference Trigger, Pause ............................................................................
Trigger, Sample Clock, Sample Clock
Timebase
Analog output function Start Trigger, Pause Trigger, Sample Clock, ............................................................................
Sample Clock Timebase
Counter/timer function Gate, Source, HW_Arm, Aux, A, B, Z, ............................................................................
Up_Down
Module I/O States
At power-on Module-dependent. Refer to the documentation ............................................................................
for each C Series I/O module. Network Interface
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
High-performance data streams6 ............................................................................
Data stream types available Analog input, analog output, digital input, ............................................................................
digital output, counter/timer input,
counter/timer output, NI-XNET5
Default MTU size1500 bytes ............................................................................
5When a session is active, CAN or LIN (NI-XNET) C Series modules use a total of two data streams regardless of the number of NI-XNET modules in the chassis.
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Ethernet
Network interface100 Base-TX, full-duplex; 100 Base-TX, ............................................................................
half-duplex; 10 Base-T, full-duplex;
10 Base-T, half-duplex
Communication rates10/100 Mbps, auto-negotiated ............................................................................
Maximum cabling distance100 m/segment ............................................................................
Power Requirements
Caution The protection provided by the NI cDAQ-9181 chassis can be impaired if
it is used in a manner not described in the NI cDAQ-918x/919x User Manual.
Note Some C Series I/O modules have additional power requirements. For more
information about C Series I/O module power requirements, refer to the
documentation for each C Series I/O module.
Note Sleep mode for C Series I/O modules is not supported in the NI cDAQ-9181.
............................................................................
Voltage input range9 to 30 V
Maximum required input power6 5 W ............................................................................
Recommended power supply15 W secondary ............................................................................
Power input connector 2 positions 3.5 mm pitch mini-combicon screw ............................................................................
terminal with screw flanges, Phoenix Contact
1727566
Power input mating connector Sauro CTF020V8, Phoenix Contact 1714977, ............................................................................
or equivalent
6Includes maximum 1 W module load per slot across rated temperature and product
variations.
NI cDAQ-9181 Specifications | ? National Instruments | 5
Physical Characteristics
Weight (unloaded)Approx. 470 g (16.6 oz) ............................................................................
Dimensions (unloaded)194.0 mm × 88.7 mm × 33.6 mm ............................................................................
(7.64 in. × 3.49 in. × 1.32 in.) Refer to the
following figure.
Torque for power connector screws0.4 N · m (3.5 lb · in.) ............................................................................
If you need to clean the chassis, wipe it with a dry towel.
Figure 1. NI cDAQ-9181 Dimensions
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Safety Voltages
Connect only voltages that are within these limits.
V terminal to C terminal30 V maximum, Measurement Category I ............................................................................
Measurement Category I is for measurements performed on circuits not directly connected to the electrical distribution system referred to as MAINS voltage. MAINS is a hazardous live electrical supply system that powers equipment. This category is 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.
Caution Do not connect the system to signals or use for measurements within
Measurement Categories II, III, or IV.
Environmental
0 to 55 °C
Operating temperature ............................................................................
(IEC-60068-2-1 and IEC-60068-2-2)
Caution To maintain product performance and accuracy specifications when the
ambient temperature is between 45 and 55 °C, you must mount the chassis to a metal
panel or surface using the screw holes or the panel mount kit. Measure the ambient
temperature at each side of the CompactDAQ system 63.5 mm (2.5 in.) from the
side and 25.4 mm (1.0 in.) from the rear cover of the system. For further information
about mounting configurations, go to https://www.wendangku.net/doc/458258323.html,/info and enter the Info Code
cdaqmounting. ............................................................................
-10 to 70 °C
Storage temperature (IEC-60068-2-1
and IEC-60068-2-2)
Ingress protection IP 30 ............................................................................
10 to 90% RH, noncondensing ............................................................................
Operating humidity
(IEC-60068-2-56)
Storage humidity (IEC-60068-2-56) 5 to 95% RH, noncondensing ............................................................................
Pollution Degree (IEC 60664)2 ............................................................................ ............................................................................
Maximum altitude5,000 m
Indoor use only.
NI cDAQ-9181 Specifications | ? National Instruments | 7
Hazardous Locations
U.S. (UL)Class I, Division 2, Groups A, B, C, D, T4; ............................................................................
Class I, Zone 2, AEx nC IIC T4 ............................................................................
Canada (C-UL)Class I, Division 2, Groups A, B, C, D, T4;
Class I, Zone 2, Ex nL IIC T4
Europe (DEMKO)Ex nA IIC T4 Gc ............................................................................
Shock and Vibration
To meet these specifications, you must panel mount the NI cDAQ-9181 system and affix ferrules to the ends of the terminal lines.
Operational shock30 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 to 500 Hz, 0.3 g rms
....................................................................
Non-operating 5 to 500 Hz, 2.4 g rms (Tested in accordance ....................................................................
with IEC 60068-2-64. Non-operating test
profile exceeds the requirements of
MIL PRF-28800F, Class 3.)
Safety
This product meets the requirements of the following standards of safety for electrical equipment for measurement, control, and laboratory use:
?IEC 61010-1, EN 61010-1
?UL 61010-1, CSA 61010-1
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
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?AS/NZS CISPR 11: Group 1, Class A emissions
?FCC 47 CFR Part 15B: Class A emissions
?ICES-001: Class A emissions
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.
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.
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:?2006/95/EC; Low-Voltage Directive (safety)
?2004/108/EC; Electromagnetic Compatibility Directive (EMC)
Online Product Certification
To obtain product certifications and the DoC for this product, visit https://www.wendangku.net/doc/458258323.html,/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 not only to the environment but also to NI customers.
For additional environmental information, refer to the Minimize Our Environmental Impact web page at https://www.wendangku.net/doc/458258323.html,/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) EU Customers At the end of the product life cycle, all products must be sent to a
WEEE recycling center. For more information about WEEE recycling centers,
National Instruments WEEE initiatives, and compliance with
WEEE Directive 2002/96/EC on Waste Electrical and Electronic Equipment, visit
https://www.wendangku.net/doc/458258323.html,/environment/weee.
NI cDAQ-9181 Specifications | ? National Instruments | 9
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372086A-01Apr13