cDAQ-9181 Specifications

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 25 °C unless otherwise noted.

Analog Input

Input FIFO size

127 samples

Maximum sample rate[1]1 Performance dependent on type of installed C Series module and number of channels in the task.

Determined by the C Series module

Timing accuracy2 Does not include group delay. For more information, refer to the documentation for each C Series module.[2]

50 ppm of sample rate

Timing resolution[2]

12.5 ns

Number of channels supported

Determined by the C Series module

Analog Output

Number of channels supported
Hardware-timed task

Onboard regeneration

16

Non-regeneration

Determined by the C Series module

Non-hardware-timed task

Determined by the C Series module

Maximum update rate

Onboard regeneration

1.6 MS/s (multi-channel, aggregate)

Non-regeneration

Determined by the C Series module

Timing accuracy

50 ppm of sample rate

Timing resolution

12.5 ns

Output FIFO size

Onboard regeneration

8,191 samples shared among channels used

Non-regeneration

127 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) FIFO

Parallel modules

511 samples

Serial modules

63 samples

Waveform generation (DO) FIFO

Parallel modules

2,047 samples

Serial modules

63 samples

Digital input sample clock frequency

Streaming to application memory

System-dependent

Finite

0 MHz to 10 MHz

Digital output sample clock frequency

Streaming from application memory

System-dependent

Regeneration from FIFO

0 MHz to 10 MHz

Finite

0 MHz to 10 MHz

Timing accuracy

50 ppm

General-Purpose Counters/Timers

Number of counters/timers

4

Resolution

32 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

Output applications

Pulse, pulse train with dynamic updates, frequency division, equivalent time sampling

Internal base clocks

80 MHz, 20 MHz, 100 kHz

External base clock frequency

0 MHz to 20 MHz

Base clock accuracy

50 ppm

Output frequency

0 MHz 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 channels

1

Base clocks

20 MHz, 10 MHz, 100 kHz

Divisors

1 to 16 (integers)

Base clock accuracy

50 ppm

Output

Any module PFI terminal

Module PFI Characteristics

Functionality

Static digital input, static digital output, timing input, and timing output

Timing output sources[3]3 Actual available signals are dependent on type of installed C Series module.

Many analog input, analog output, counter, digital input, and digital output timing signals

Timing input frequency

0 MHz to 20 MHz

Timing output frequency

0 MHz to 20 MHz

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 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 streams

6

Data stream types available

Analog input, analog output, digital input, digital output, counter/timer input, counter/timer output, NI-XNET[4]4 When 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.

Default MTU size

1500 bytes

Ethernet

Network interface

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

Communication rates

10/100 Mbps, auto-negotiated

Maximum cabling distance

100 m/segment

Safety Voltages

Connect only voltages that are within these limits.

V terminal to C terminal

30 V maximum, Measurement Category I

Environmental

Operating temperature

0 °C to 55 °C

Notice To maintain product performance and accuracy specifications when the ambient temperature is between 45 and 55 °C, you must mount the chassis horizontally 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 ni.com/info and enter the Info Code cdaqmounting.

Storage temperature

-10 °C to 70 °C

Ingress protection

IP 30

Operating humidity

10% to 90% RH, noncondensing

Storage humidity

5% to 95% RH, noncondensing

Pollution Degree

2

Maximum altitude

5,000 m

Shock and Vibration

To meet these specifications, you must direct mount the cDAQ-9181 system and affix ferrules to the ends of the terminal lines.

Operational shock

30 g peak, half-sine, 11 ms pulse

Random vibration

Operating

5 Hz to 500 Hz,0.3 grms

Non-operating

5 Hz to 500 Hz,2.4 grms

Power Requirements

Note Some C Series modules have additional power requirements. For more information about C Series module power requirements, refer to the documentation for each C Series module.
Note Sleep mode for C Series modules is not supported in the cDAQ-9181.

Voltage input range

9 V to 30 V

Maximum power consumption[5]5 Includes maximum 1 W module load per slot across rated temperature and product variations.

5 W

Note The maximum power consumption specification is based on a fully populated system running a high-stress application at elevated ambient temperature and with all C Series modules consuming the maximum allowed power.

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

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.

Figure 1. cDAQ-9181 Dimensions

1378

Power Connector

Screw-terminal wiring

Gauge

0.5 mm2 to 2.1 mm2 (20 AWG to 14 AWG) copper conductor wire

Wire strip length

6 mm (0.24 in.) of insulation stripped from the end

Temperature rating

85 °C

Torque for screw terminals

0.20 N · m to 0.25 N · m (1.8 lb · in. to 2.2 lb · in.)

Wires per screw terminal

One wire per screw terminal

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.20 N · m to 0.25 N · m (1.8 lb · in. to 2.2 lb · in.)

1 Performance dependent on type of installed C Series module and number of channels in the task.

2 Does not include group delay. For more information, refer to the documentation for each C Series module.

3 Actual available signals are dependent on type of installed C Series module.

4 When 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.

5 Includes maximum 1 W module load per slot across rated temperature and product variations.