数据采集卡上数字I/O线上的内部上拉/下拉电阻值

硬件: Multifunction DAQ (MIO)

问题: 哪些数据采集（DAQ）设备在数字I/O线上使用内部的上拉/下拉电阻，这些电阻值是多少？

解答:

设备名称	上拉/下拉	阻值
PC-DIO-24/96	User-defined*	100 kΩ
NI-6013/6014	Pull-down	1.5 kΩ
NI-6533/6534	User-defined*	100 kΩ
AT-DIO-32F	Pull-Up (IN1, IN2 only)	4.7kΩ
AT-MIO-16D	Pull-up	100 kΩ
PC-LPM-16	Pull-up	10 kΩ
DAQCard-700	Pull-up	10 kΩ
E-Series***	Pull-up**	50 kΩ
S-Series****	Pull-up	50 kΩ
USB-6008/6009	Pull-up	4.7 kΩ
USB-6501	Pull-up	4.7kΩ
USB-6503/6509	User-defined*	100kΩ
PCI-DIO-96	Pull-up	100kΩ

*DIO-24/96和USB-6503/6509允许使用跳线来选择上拉/下拉的配置。NI-6533/6534系列允许用户通过DPULL针脚配置上拉或者下拉电阻。参考用户手册获取更多信息。

**AT-MIO-16XE-50上的数字线6和数字线7同样有50 kΩ的下拉电阻。

***6025E的扩展数字线，AT-MIO-16E-10h和AT-MIO-16DE-10有100 kΩ 的上拉电阻。

****S系列对于电阻阻值的选择可容性很大，从10kΩ t到100kΩ。请确保仔细检查对于你的设备相应的参数。

注意：上拉/下拉电阻会决定数字线的上电（默认）状态。参考KnowledgeBase 266KK6YF: Can I Use a Pull-down Resistor to Set the Default State of the Digital Lines on my NI DAQ Device?获取更多信息。

相关链接: Product Manuals: PC-DIO-24 User Manual (February 1998)
Product Manuals: PC-DIO-96 User Manual (September 1996)
Product Manuals: NI 6013/6014 User Manual (December 2005)
Product Manuals: 6023E/6024E/6025E Family Specifications (December 2005)
Product Manuals: E Series User Manual (February 2007)
Product Manuals: PCI-DIO-96/PXI-6508/PCI-6503 User Manual (March 2009)
Product Manuals: USB-6008/6009 User Guide and Specifications (March 2008)
Product Manuals: USB-6501 User Guide and Specifications (December 2007)
Product Manuals: USB-6509 User Guide and Specifications (March 2008)
KnowledgeBase 12S9FCU3: Input Impedance of the Digital Lines on National Instruments Data Acquisition Devices
KnowledgeBase 266KK6YF: Can I Use a Pull-down Resistor to Set the Default State of the Digital Lines on my NI DAQ Device?

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报告日期: 01/16/1996
最近更新: 01/30/2012
文档编号: 0HFHATRP