PXI-6123 PXI多功能I/O模块-产品说明介绍：
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。
NI 6122/6123 Specifications
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
