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USER GUIDE AND SPECIFICATIONS

NI USB-6008/6009
Bus-Powered Multifunction DAQ USB Device
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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 analogoutput (AO) channels, 12 digital input/output (DIO) channels, and a 32-bit counter with a full-speed USB interface. Table 1 compares the devices.
Table 1. NI USB-6008 and NI USB-6009 Comparison

Feature AI resolution Maximum AI sample rate, single channel* Maximum AI sample rate, multiple channels (aggregate)* DIO configuration

NI USB-6008 12 bits differential, 11 bits single-ended 10kS/s 10 kS/s Open collector†

NI USB-6009 14 bits differential, 13 bits single-ended 48 kS/s 48 kS/s Each channel individually programmable as open collector or active drive†

* System-dependent. † This document uses NI-DAQmx naming conventions. Open-drain is called open collector and push-pull is called active drive.

Figure 1 shows key functional components of the NI USB-6008/6009.Full-Speed USB Interface

Vbus

External Power Supply

+5 V/200 mA Digital I/O Terminal Block Analog I/O Terminal Block

PFI 0

USB

USB Microcontroller

P1. P0.

+2.5 V/CAL 8 Channel 12/14b ADC AI

SPI

12b DAC

AO 0

12b DAC

AO 1

Figure 1. NI USB-6008/6009 Block Diagram

Contents
SafetyGuidelines................................................................................................................................. 3 Electromagnetic Compatibility Guidelines.......................................................................................... 3 Unpacking............................................................................................................................................ 4 Setting Up the NI USB-6008/6009...................................................................................................... 4 Using the NI USB-6008/6009 in an Application................................................................................. 6 Features................................................................................................................................................ 7 USBConnector and USB Cable Strain Relief............................................................................. 7 LED Indicator .............................................................................................................................. 8 Screw Terminal Connector Plugs ................................................................................................ 8Firmware...................................................................................................................................... 8 Cables and Accessories........................................................................................................................ 9 Pinout and SignalDescriptions............................................................................................................ 9

NI USB-6008/6009 User Guide and Specifications

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Analog Input ........................................................................................................................................ 11 Analog Input Modes and Signal Sources..................................................................................... 11 Floating SignalSources ....................................................................................................... 12 Ground-Referenced Signal Sources..................................................................................... 13 Taking Differential Measurements ...................................................................................... 14 Taking Referenced Single-Ended...