National Instruments NI USB-6008 Bedienungsanleitung

USER GUIDE AND SPECIFICATIONS

USB-6008/6009

This guide describes how to use the National Instruments USB-6008/6009

data acquisition (DAQ) devices and lists specifications.

Contents

Introduction............................................................................................. 2

Safety Guidelines .................................................................................... 3

Software .................................................................................................. 5

VI Logger................................................................................................ 5

Hardware................................................................................................. 6

Setting Up Hardware............................................................................... 7

I/O Connector.......................................................................................... 8

Signal Descriptions ................................................................................. 10

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

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

MUX......................................................................................... 11

PGA .......................................................................................... 11

A/D Converter .......................................................................... 11

AI FIFO .................................................................................... 12

Analog Input Modes ........................................................................ 12

Connecting Differential Voltage Signals.................................. 12

Connecting Reference Single-Ended Voltage Signals ............. 13

Digital Trigger ................................................................................. 14

Analog Output......................................................................................... 14

Analog Output Circuitry .................................................................. 14

DACs ........................................................................................ 14

Connecting Analog Output Loads ................................................... 15

Minimizing Glitches on the Output Signal ...................................... 15

Digital I/O ............................................................................................... 15

Digital I/O Circuitry......................................................................... 15

Source/Sink Information.................................................................. 16

I/O Protection.......................................................................................... 17

Power-On States .............................................................................. 18

Static DIO ........................................................................................ 18

Event Counter ......................................................................................... 18

USB-6008/6009 User Guide and Specifications 2 ni.com

Reference and Power Sources .................................................................18

+2.5 External References .................................................................18

+5 V Power Source...........................................................................18

Specifications...........................................................................................19

Analog Input.....................................................................................19

Analog Output ..................................................................................20

Digital I/O.........................................................................................21

External Voltage...............................................................................21

Counter .............................................................................................22

Bus Interface.....................................................................................22

Power Requirements.........................................................................22

Physical Characteristics....................................................................22

Safety................................................................................................23

Standards ...................................................................................23

Voltages.....................................................................................23

Hazardous Locations .................................................................24

Environmental ..................................................................................24

Electromagnetic Compatibility.........................................................24

CE Compliance.................................................................................25

Where to Go for Support .........................................................................26

Introduction

The NI USB-6008/6009 provides connection to eight 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.

Table 1. Differences Between the USB-6008 and USB-6009

Feature USB-6008 USB-6009

AI Resolution 12 bits differential,

11 bits single-ended

14 bits differential,

13 bits single-ended

Maximum AI Sample Rate*10 kS/s 48 kS/s

DIO Configuration Open-drain Open-drain or push-pull

*Might be system dependent.

©National Instruments Corporation 3 USB-6008/6009 User Guide and Specifications

Figure 1. USB-6008/6009

Figure 2. USB-6008/6009 Back View

Safety Guidelines

Caution Operate the hardware only as described in these operating instructions.

The following section contains important safety information that you must

follow when installing and using the USB-6008/6009.

Do not operate the USB-6008/6009 in a manner not specified in this

document. Misuse of the device can result in a hazard. You can compromise

the safety protection built into the device if the device is damaged in any

way. If the device is damaged, contact National Instruments for repair.

Do not substitute parts or modify the device except as described in this

document. Use the device only with the chassis, modules, accessories, and

cables specified in the installation instructions. You must have all covers

and filler panels installed during operation of the device.

1 USB Cable Strain Relief

NI USB-6009

8 Inputs, 14-bit, Multifunction I/O

32 Digital 17

1 Analog 16

USB-6008/6009 User Guide and Specifications 4 ni.com

Do not operate the device in an explosive atmosphere or where there may

be flammable gases or fumes. If you must operate the device in such an

environment, it must be in a suitably rated enclosure.

If you need to clean the device, use a dry cloth. Make sure that the device

is completely dry and free from contaminants before returning it to service.

Operate the device only at or below Pollution Degree 2. Pollution is foreign

matter in a solid, liquid, or gaseous state that can reduce dielectric strength

or surface resistivity. The following is a description of pollution degrees:

• Pollution Degree 1 means no pollution or only dry, nonconductive

pollution occurs. The pollution has no influence.

• Pollution Degree 2 means that only nonconductive pollution occurs in

most cases. Occasionally, however, a temporary conductivity caused

by condensation must be expected.

• Pollution Degree 3 means that conductive pollution occurs, or dry,

nonconductive pollution occurs that becomes conductive due to

condensation.

You must insulate signal connections for the maximum voltage for which

the device is rated. Do not exceed the maximum ratings for the device. Do

not install wiring while the device is live with electrical signals. Do not

remove or add connector blocks when power is connected to the system.

Avoid contact between your body and the connector block signal when hot

swapping modules. Remove power from signal lines before connecting

them to or disconnecting them from the device.

Operate the device at or below the Measurement Category I1. Measurement

circuits are subjected to working voltages2and transient stresses

(overvoltage) from the circuit to which they are connected during

measurement or test. Measurement categories establish standard impulse

withstand voltage levels that commonly occur in electrical distribution

systems. The following is a description of measurement categories:

• Measurement Category I is for measurements performed on circuits

not directly connected to the electrical distribution system referred to

as MAINS3voltage. This category is for measurements of voltages

from specially protected secondary circuits. Such voltage

measurements include signal levels, special equipment, limited-energy

parts of equipment, circuits powered by regulated low-voltage sources,

and electronics.

1 Measurement Category as defined in electrical safety standard IEC 61010-1. Measurement Category is also referred to as

Installation Category.

2 Working Voltage is the highest rms value of an AC or DC voltage that can occur across any particular insulation.

3 MAINS is defined as a hazardous live electrical supply system that powers equipment. Suitably rated measuring circuits may

be connected to the MAINS for measuring purposes.

©National Instruments Corporation 5 USB-6008/6009 User Guide and Specifications

• Measurement Category II is for measurements performed on circuits

directly connected to the electrical distribution system. This category

refers to local-level electrical distribution, such as that provided by a

standard wall outlet (for example, 115 V for U.S. or 230 V for Europe).

Examples of Measurement Category II are measurements performed

on household appliances, portable tools, and similar E Series devices.

• Measurement Category III is for measurements performed in the

building installation at the distribution level. This category refers to

measurements on hard-wired equipment such as equipment in fixed

installations, distribution boards, and circuit breakers. Other examples

are wiring, including cables, bus-bars, junction boxes, switches,

socket-outlets in the fixed installation, and stationary motors with

permanent connections to fixed installations.

• Measurement Category IV is for measurements performed at the

primary electrical supply installation (<1,000 V). Examples include

electricity meters and measurements on primary overcurrent

protection devices and on ripple control units.

Software

Software support for the USB-6008/6009 for Windows 2000/XP is

provided by NI-DAQmx.

The NI-DAQmx CD contains example programs that you can use to get

started programming with the USB-6008/6009. Refer to the NI-DAQmx for

USB Devices Getting Started Guide for more information.

Note For information about non-Windows operating system support, refer to

ni.com/info and enter rddqld.

VI Logger

The NI-DAQmx CD includes VI Logger Lite which is an easy-to-use

configuration-based tool specifically designed for data logging

applications. The application is available at Start»All Programs»

National Instruments»VI Logger.

USB-6008/6009 User Guide and Specifications 6 ni.com

Hardware

The following block diagram shows key functional components of the

USB-6008/6009.

Figure 3. Device Block Diagram

P1.<0..3>

P0.<0..7>

Digital I/O Terminal Block

AI <0..7>

AO 0

AO 1

Analog I/O Terminal Block

+2.5 V/CAL

+5 V/200 mA

8 Channel

12/14b ADC

12b DAC

USB Microcontroller

SPI

External

Power

Supply

Vbus

Full-Speed USB Interface

USB

PFI 0

©National Instruments Corporation 7 USB-6008/6009 User Guide and Specifications

Setting Up Hardware

Complete the following steps to set up the hardware:

1. Install combicon screw terminal blocks by inserting them into the

combicon jacks.

Note The USB-6008/6009 kit ships with signal labels. You can apply the signal labels to

the screw terminal blocks for easy signal identification.

2. Refer to Table 2 and Figure 4 for label orientation and affix the

provided signal labels to the screw terminal blocks. Until the signal

labels are applied, you can insert the screw terminal blocks into either

of the combicon jacks. Refer to Figure 4 for more information about

signal label orientation.

Figure 4. Signal Label Application Diagram

Note Once you label the screw terminal blocks, you must only insert them into the

matching combicon jack, as indicated by the overlay label on the USB-6008/6009 device.

3. Connect the wiring to the appropriate screw terminals.

1 Overlay Label with Pin Orientation Guides

2 Combicon Jack

3 Signal Labels

4 USB Cable

-B

23 lat

iD 7

1gol

USB-6008/6009 User Guide and Specifications 8 ni.com

I/O Connector

The USB-6008/6009 ships with one detachable screw terminal block for

analog signals and one detachable screw terminal block for digital signals.

These terminal blocks provide 16 connections that use 16 AWG to

28 AWG wire.

Table 2 lists the analog terminal assignments, and Table 3 lists the digital

terminal assignments.

Table 2. Analog Terminal Assignments

Module Terminal

Signal,

Single-Ended Mode

Signal,

Differential Mode

1GND GND

2AI 0 AI 0+

3AI 4 AI 0–

4GND GND

5AI 1 AI 1+

6AI 5 AI 1–

7GND GND

8AI 2 AI 2+

9AI 6 AI 2–

10 GND GND

11 AI 3 AI 3+

12 AI 7 AI 3–

13 GND GND

14 AO 0 AO 0

15 AO 1 AO 1

16 GND GND

12345678910111213141516

©National Instruments Corporation 9 USB-6008/6009 User Guide and Specifications

Table 3. Digital Terminal Assignments

Module Terminal Signal

17 P0.0

18 P0.1

19 P0.2

20 P0.3

21 P0.4

22 P0.5

23 P0 6

24 P0.7

25 P1.0

26 P1.1

27 P1.2

28 P1.3

29 PFI 0

30 +2.5 V

31 +5 V

32 GND

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

USB-6008/6009 User Guide and Specifications 10 ni.com

Signal Descriptions

Table 4 describes the signals available on the I/O connectors.

Table 4. Signal Descriptions

Signal Name Reference Direction Description

GND — — Ground—The reference point for the

single-ended AI measurements, bias

current return point for differential mode

measurements, AO voltages, digital

signals at the I/O connector, +5 VDC

supply, and the +2.5 VDC reference.

AI <0..7> Var i es Input Analog Input Channels 0 to 7—For

single-ended measurements, each signal is

an analog input voltage channel. For

differential measurements, AI 0 and AI 4

are the positive and negative inputs of

differential analog input channel 0.

The following signal pairs also form

differential input channels:

<AI 1, AI 5>, <AI 2, AI 6>, and

<AI3,AI7>.

AO 0 GND Output Analog Channel 0 Output—Supplies the

voltage output of AO channel 0.

AO 1 GND Output Analog Channel 1 Output—Supplies the

voltage output of AO channel 1.

P1.<0..3>

P0.<0..7>

GND Input or Output Digital I/O Signals—You can

individually configure each signal as an

input or output.

+2.5 V GND Output +2.5 V External Reference—Provides a

reference for wrap-back testing.

+5 V GND Output +5 V Power Source—Provides +5 V

power up to 200 mA.

PFI 0 GND Input PFI 0—This pin is configurable as either a

digital trigger or an event counter input.

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