NI USB-6009数据采集卡 用户使用手册

USER GUIDE AND SPECIFICATIONS

NI USB-6008/6009

Bus-Powered Multifunction DAQ USB Device

This user guide describes how to use the National Instruments USB-6008 and National Instruments USB-6009 data acquisition (DAQ) devices and lists specifications.

The NI USB-6008/6009 provides connection to eight single-ended analog input (AI) channels, two analog output (AO) channels, 12 digital input/output (DIO) channels, and a 32-bit counter with a full-speed USB interface. Table1 compares the devices.

Table 1. NI USB-6008 and NI USB-6009 Comparison

Feature

AI resolution

Maximum AI sample rate, singlechannel*

Maximum AI sample rate, multiplechannels (aggregate)*DIO configuration

NI USB-600812 bits differential,11 bits single-ended

10 kS/s

10 kS/sOpen collector

NI USB-600914 bits differential,13 bits single-ended

48 kS/s48 kS/s

Each channel individually programmable as open collector

oractive drive

* System-dependent.

This document uses NI-DAQmx naming conventions. Open-drain is called open collector and push-pull is called activedrive.

NI USB-6009数据采集卡 用户使用手册

Figure1 shows key functional components of the NIUSB-6008/6009.

Figure 1. NI USB-6008/6009 Block Diagram

Contents

Safety Guidelines.................................................................................................................................3Electromagnetic Compatibility Guidelines..........................................................................................3Unpacking............................................................................................................................................4Setting Up the NIUSB-6008/6009......................................................................................................4Using the NIUSB-6008/6009 in an Application.................................................................................6Features................................................................................................................................................7

USB Connector and USB Cable Strain Relief.............................................................................7LED Indicator..............................................................................................................................8Screw Terminal Connector Plugs................................................................................................8Firmware......................................................................................................................................8Cables and Accessories........................................................................................................................9Pinout and Signal Descriptions............................................................................................................9

NI USB-6008/6009 User Guide and http://

NI USB-6009数据采集卡 用户使用手册

Analog Input........................................................................................................................................11

Analog Input Modes and Signal Sources.....................................................................................11

Floating Signal Sources.......................................................................................................12Ground-Referenced Signal Sources.....................................................................................13Taking Differential Measurements......................................................................................14Taking Referenced Single-Ended Measurements................................................................15Digital Trigger.............................................................................................................................15AnalogOutput......................................................................................................................................16

Connecting Analog Output Loads...............................................................................................16Minimizing Glitches on the Output Signal..................................................................................16DigitalI/O............................................................................................................................................17

Source/Sink Information..............................................................................................................18I/O Protection...............................................................................................................................19Power-On States..........................................................................................................................19Static DIO....................................................................................................................................19PFI0.....................................................................................................................................................19

Using PFI0 as a Digital Trigger..................................................................................................19Using PFI0 as an Event Counter.................................................................................................19External Reference and Power Source.................................................................................................20

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