ion"="" background-color:#FFFFFF;">

PXI多功能I/O模块提供多种不同的I/O，具有不同的通道数、采样率和输出速率，不同型号之间还具有的定时、触发和同步。该模块适用于实验室研究、设计验证测试和制造测试等工业应用。PXI多功能I/O模块还具有NI-DAQmx驱动程序和配置实用程序，可简化配置和测量。NI-DAQmx支持NI编程环境以及Python、ANSI C、C#.NET和MathWorks MATLAB®软件。

NI 6143 Specifications

This document lists the I/O terminal summary and specifications for the

NI PCI/PXI-6143.

For the most current edition of this document, refer to ni.com/manuals.

Refer to the DAQ Quick Start Guide for more information about accessing

documents on the NI-DAQ CD.

Note With NI-DAQmx, National Instruments has revised its terminal names so they are

easier to understand and more consistent among NI hardware and software products. The

revised terminal names used in this document are usually similar to the names they replace.

For a complete list of Traditional NI-DAQ terminal names and their NI-DAQmx

equivalents, refer to the Terminal Name Equivalents table in the S Series Help.

Table 1. I/O Terminal Summary

Specifications

The following specifications are typical at 25 °C unless otherwise noted.

Analog Input

Input Characteristics

Number of channels ............................... 8 differential

ADC resolution ...................................... 16 bits, 1 in 65,536

Sampling rate

Maximum........................................ 250 kS/s

Minimum ........................................ 0 S/s

Accuracy ......................................... ±50 ppm for internal time

Input coupling ........................................ DC

Input range ............................................. ±5 V

Input impedance

AI + to AI GND.............................. 100 MΩ in parallel with 10 pF

AI – to AI GND .............................. 100 MΩ in parallel with 10 pF

Input bias current ................................... ±20 pA typ, ±150 pA max

Input offset current................................. ±3 pA typ, ±20 pA max

Max working voltage for all analog input channels

Positive input (AI +) ....................... ±7 V

Negative input (AI –)...................... ±7 V

Overvoltage protection

(AI +, AI –) ............................................ ±15 V

Input current during

overvoltage conditions ........................... ±5.7 mA max

Input FIFO size ...................................... 2,046 samples

Data transfers ......................................... DMA, interrupts,

programmed I/O

DMA mode ............................................ Scatter-gather

DC Transfer Characteristics

DNL ........................................................±0.8 LSB typ, no missing codes

INL..........................................................±1.5 LSB typ, ±3.0 LSB max

System noise ...........................................0.8 LSBrms

Dynamic Characteristics

Phase mismatch ......................................±0.5° at 100 kHz

Crosstalk .................................................–90 dB at 50 kHz

Bandwidth...............................................490 kHz

SINAD ....................................................89 dB at 10 kHz

CMRR.....................................................75 dB at 60 Hz

SFDR ......................................................98 dB at 10 kHz

THD ........................................................–96 dBc at 10 kHz

Stability

Recommended warm-up time.................15 min

Onboard Calibration Reference

Level................................................2.50 V (±2.5 mV)

(actual value stored in EEPROM)

Temperature coefficient...................±7.0 ppm/°C max

Long-term stability ..........................±20 ppm/

Table 2. NI 6143 Analog Input DC Accuracy Information

Nominal

Range

at Full

Scale (V)

Absolute Accuracy

Gain

Error

(% of

Reading)

Offset

+INL

Error

(µV)

Gain Tempco

Ext./Int. Cal

(%/°C)

Offset

Tempco

(µV/°C)

Random

Noise

(µVrms)

Absolute

Accuracy at

Full Scale

(mV)

Relative

Accuracy

(mV)

±5.0

0.05

600

0.0007/0.0003

104

122

3.613

0.0488

Note: Accuracies are valid for measurements following an internal S Series calibration. Averaged numbers assume averaging

of 100 single-channel readings. Measurement accuracies are listed for operational temperatures within ±1 °C of internal

calibration temperature and ±10 °C of external or factory-calibration temperature. NI recommends a one-year calibration

interval. The Absolute Accuracy at Full Scale calculations were performed for a maximum range input after one year and

100 points of averaged data.

1,000