美国NI PXI-6123-美国NI介绍：

在单个PXI模块中提供模拟I/O、数字I/O、计数器/定时器以及触发功能的组合。

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。

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

NI 6122/6123.

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

NI 6122............................................4

NI 6123............................................8

Type of ADC

Resolution........................................16 bits, 1 in 65,536

Pipeline............................................0

Sampling rate

Maximum........................................ 500 kS/s per channel

Minimum ........................................ No minimum

Input impedance

AI – to AI GND .............................. 100 M? in parallel with 10 pF

AI + to AI GND.............................. 100 M? in parallel with 10 pF

Input bias current ................................... ±2 pA typ, ±25 pA max

Input offset current................................. ±1 pA typ, ±10 pA max

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

Max working voltage for all analog input channels

Positive input (AI +) ....................... ±11 V for all ranges,

Measurement Category I

Negative input (AI –)...................... ±11 V for all ranges,

Measurement Category I

Caution Do not use for measurements within Categories II, III, or IV.

Overvoltage protection

(AI +, AI –) ............................................ ±36 V

Input current during

overvoltage conditions ........................... ±20 mA max

Input FIFO size

NI 6122 ........................................... 16 MS

NI 6123 ........................................... 16 or 32 MS

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

programmed I/O

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

DC Transfer Characteristics

INL......................................................... ±2 LSB max

DNL ....................................................... –1 min, 1.5 max,

no missing codes