National Instruments 6008 User Manual

USER GUIDE AND SPECIFICATIONS  
NI USB-6008/6009  
This guide describes how to use the National Instruments USB-6008/6009  
data acquisition (DAQ) devices and lists specifications.  
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.  
Note This manual revision updates naming conventions to reflect the conventions used in  
NI-DAQmx. Table 1 notes the correlation between the old and updated names.  
Table 1. Digital Output Driver Type Naming Conventions  
Hardware Functionality  
Open-drain  
NI-DAQmx Terminology  
Open collector  
Push-pull  
Active drive  
 
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 NI USB-6008/6009.  
Do not operate the NI 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.  
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.  
© National Instruments Corporation  
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NI USB-6008/6009 User Guide and Specifications  
Operate the device at or below the Measurement Category I1. Measurement  
circuits are subjected to working voltages2 and 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 MAINS3 voltage. 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.  
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.  
1
Measurement Category as defined in electrical safety standard IEC 61010-1. Measurement Category is also referred to as  
Installation Category.  
2
3
Working Voltage is the highest rms value of an AC or DC voltage that can occur across any particular insulation.  
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.  
NI USB-6008/6009 User Guide and Specifications  
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Software  
Software support for the NI USB-6008/6009 for Windows 2000/XP/Vista  
is provided by NI-DAQmx.  
The NI-DAQmx CD contains example programs that you can use to get  
started programming with the NI USB-6008/6009. Refer to the NI-DAQmx  
for USB Devices Getting Started Guide, that shipped with your device and  
is also accessible from Start»All Programs»National Instruments»  
NI-DAQ for more information.  
Note For information about non-Windows operating system support, refer to  
ni.com/info and enter rddqld.  
LabVIEW SignalExpress for DAQ  
The NI-DAQmx CD includes LabVIEW SignalExpress for DAQ which is  
an interactive, measurement software tool for quickly acquiring, analyzing,  
and presenting data with no programming required. The application is  
available at Start»All Programs»National Instruments»NI DAQ»  
LabVIEW SignalExpress.  
© National Instruments Corporation  
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NI USB-6008/6009 User Guide and Specifications  
Hardware  
The following block diagram shows key functional components of the  
NI USB-6008/6009.  
External  
Power  
Vbus  
+5 V/200 mA  
PFI 0  
Supply  
USB  
USB Microcontroller  
P1.<0..3>  
P0.<0..7>  
+2.5 V/CAL  
8 Channel  
12/14b ADC  
AI <0..7>  
12b DAC  
12b DAC  
AO 0  
AO 1  
Figure 3. Device Block Diagram  
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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.  
2. Figure 4 illustrates the signal labels that ship in the NI USB-6008/6009  
kit. You can apply the signal labels to the screw terminal blocks for  
easy signal identification.  
3
4
ANALOG  
DIGITAL  
1
2
1
2
Terminal Number Labels (Use Both Together)  
Digital I/O Label  
3
4
Single-Ended Label (Use Either)  
Differential Label (Use Either)  
Figure 4. NI USB-6008/6009 Signal Labels  
3. Refer to Table 3 and Figures 4 and 5 for signal 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.  
© National Instruments Corporation  
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NI USB-6008/6009 User Guide and Specifications  
 
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Overlay Label with Pin Orientation Guides  
Combicon Jack  
3
4
Signal Labels  
USB Cable  
Figure 5. 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 NI USB-6008/6009  
device.  
4. Connect the wiring to the appropriate screw terminals.  
NI USB-6008/6009 User Guide and Specifications  
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I/O Connector  
The NI 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 3 lists the analog terminal assignments, and Table 4 lists the digital  
terminal assignments.  
Table 3. Analog Terminal Assignments  
Signal,  
Signal,  
Module  
Terminal  
Single-Ended Mode  
Differential Mode  
1
2
GND  
AI 0  
AI 4  
GND  
AI 1  
AI 5  
GND  
AI 2  
AI 6  
GND  
AI 3  
AI 7  
GND  
AO 0  
AO 1  
GND  
GND  
AI 0+  
AI 0–  
GND  
AI 1+  
AI 1–  
GND  
AI 2+  
AI 2–  
GND  
AI 3+  
AI 3–  
GND  
AO 0  
AO 1  
GND  
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
© National Instruments Corporation  
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NI USB-6008/6009 User Guide and Specifications  
 
Table 4. Digital Terminal Assignments  
Module  
Terminal  
17  
Signal  
P0.0  
P0.1  
P0.2  
P0.3  
P0.4  
P0.5  
P0 6  
P0.7  
P1.0  
P1.1  
P1.2  
P1.3  
PFI 0  
+2.5 V  
+5 V  
GND  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
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Signal Descriptions  
Table 5 describes the signals available on the I/O connectors.  
Table 5. 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>  
Varies  
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  
<AI 3, AI 7>.  
AO 0  
AO 1  
GND  
GND  
GND  
Output  
Output  
Analog Channel 0 Output—Supplies the  
voltage output of AO channel 0.  
Analog Channel 1 Output—Supplies the  
voltage output of AO channel 1.  
P1.<0..3>  
P0.<0..7>  
Input or  
Output  
Digital I/O SignalsYou can  
individually configure each signal as an  
input or output.  
+2.5 V  
+5 V  
GND  
GND  
GND  
Output  
Output  
Input  
+2.5 V External Reference—Provides a  
reference for wrap-back testing.  
+5 V Power Source—Provides +5 V  
power up to 200 mA.  
PFI 0  
PFI 0—This pin is configurable as either a  
digital trigger or an event counter input.  
© National Instruments Corporation  
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NI USB-6008/6009 User Guide and Specifications  
 
LED  
The NI USB-6008/6009 device has a green LED next to the USB  
connector. When the device is connected to a USB port, the LED blinks  
steadily to indicate that the device is initialized and is receiving power from  
the connection.  
If the LED is not blinking, it may mean that the device is not initialized or  
the computer is in standby mode. In order for the device to be recognized,  
the device must be connected to a computer that has NI-DAQmx installed  
on it. If your device is not blinking, make sure your computer has the latest  
version of NI-DAQmx installed on it, and the computer is not in standby  
mode.  
Analog Input  
You can connect analog input signals to the NI USB-6008/6009 through  
the I/O connector. Refer to Table 5 for more information about connecting  
analog input signals.  
Analog Input Circuitry  
Figure 6 illustrates the analog input circuitry of the NI USB-6008/6009.  
+2.5 VREF  
MUX  
PGA  
ADC  
AI FIFO  
30.9 kΩ  
127 kΩ  
AI  
Input Range  
Selection  
39.2 kΩ  
Figure 6. Analog Input Circuitry  
MUX  
The NI USB 6008/6009 has one analog-to-digital converter (ADC). The  
multiplexer (MUX) routes one AI channel at a time to the PGA.  
NI USB-6008/6009 User Guide and Specifications  
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PGA  
The progammable-gain amplifier provides input gains of 1, 2, 4, 5, 8,  
10, 16, or 20 when configured for differential measurements and gain  
of 1 when configured for single-ended measurements. The PGA gain is  
automatically calculated based on the voltage range selected in the  
measurement application.  
A/D Converter  
The analog-to-digital converter (ADC) digitizes the AI signal by  
converting the analog voltage into a digital code.  
AI FIFO  
The NI USB-6008/6009 can perform both single and multiple A/D  
conversions of a fixed or infinite number of samples. A first-in-first-out  
(FIFO) buffer holds data during AI acquisitions to ensure that no data  
is lost.  
Analog Input Modes  
You can configure the AI channels on the NI USB-6008/6009 to take  
single-ended or differential measurements. Refer to Table 5 for more  
information about I/O connections for single-ended or differential  
measurements.  
Connecting Differential Voltage Signals  
For differential signals, connect the positive lead of the signal to the AI+  
terminal, and the negative lead to the AI– terminal.  
AI+  
Voltage  
NI USB-6008/6009  
Source  
AI–  
Figure 7. Connecting a Differential Voltage Signal  
© National Instruments Corporation  
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NI USB-6008/6009 User Guide and Specifications  
 
The differential input mode can measure 20 V signals in the 20 V range.  
However, the maximum voltage on any one pin is 10 V with respect to  
GND. For example, if AI 1 is +10 V and AI 5 is –10 V, then the  
measurement returned from the device is +20 V.  
20  
15  
10  
5
AI 1  
0
–5  
AI 5  
Result  
–10  
–15  
–20  
Figure 8. Example of a Differential 20 V Measurement  
Connecting a signal greater than 10 V on either pin results in a clipped  
output.  
20  
15  
10  
5
AI 1  
0
–5  
AI 5  
Result  
–10  
–15  
–20  
Figure 9. Exceeding 10 V on AI Returns Clipped Output  
NI USB-6008/6009 User Guide and Specifications  
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Connecting Reference Single-Ended Voltage Signals  
To connect reference single-ended voltage signals (RSE) to the  
NI USB-6008/6009, connect the positive voltage signal to the desired  
AI terminal, and the ground signal to a GND terminal.  
When no signals are connected to the analog input terminal, the internal  
resistor divider may cause the terminal to float to approximately 1.4 V  
when the analog input terminal is configured as RSE. This behavior is  
normal and does not affect the measurement when a signal is connected.  
AI  
Voltage  
Source  
NI USB-6008/6009  
GND  
Figure 10. Connecting a Reference Single-Ended Voltage Signal  
Digital Trigger  
When an AI task is defined, you can configure PFI 0 as a digital trigger  
input. When the digital trigger is enabled, the AI task waits for a rising or  
falling edge on PFI 0 before starting the acquisition. To use ai/Start Trigger  
with a digital source, specify PFI 0 as the source and select rising or falling  
edge.  
© National Instruments Corporation  
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NI USB-6008/6009 User Guide and Specifications  
Analog Output  
The NI USB-6008/6009 has two independent AO channels that can  
generate outputs from 0–5 V. All updates of AO lines are software-timed.  
Analog Output Circuitry  
Figure 11 illustrates the analog output circuitry for the NI USB-6008/6009.  
+5 V  
REF(+) REF(–)  
12-Bit  
50 Ω  
Output  
Buffer  
AO  
DAC  
GND  
Figure 11. Analog Output Circuitry  
DACs  
Digital-to-analog converts (DACs) convert digital codes to analog  
voltages.  
Connecting Analog Output Loads  
To connect loads to the NI USB-6008/6009, connect the positive lead of the  
load to the AO terminal, and connect the ground of the load to a GND  
terminal.  
AI  
Voltage  
Source  
NI USB-6008/6009  
GND  
Figure 12. Connecting a Load  
NI USB-6008/6009 User Guide and Specifications  
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Minimizing Glitches on the Output Signal  
When you use a DAC to generate a waveform, you may observe glitches in  
the output signal. These glitches are normal; when a DAQ switches from  
one voltage to another, it produces glitches due to released charges. The  
largest glitches occur when the most significant bit of the DAC code  
changes. You can build a lowpass deglitching filter to remove some of  
these glitches, depending on the frequency and nature of the output signal.  
Refer to ni.com/support for more information about minimizing  
glitches.  
Digital I/O  
The NI USB-6008/6009 has 12 digital lines, P0.<0..7> and P1.<0..3>,  
which comprise the DIO port. GND is the ground-reference signal for the  
DIO port. You can individually program all lines as inputs or outputs.  
Digital I/O Circuitry  
Figure 13 shows P0.<0..7> connected to example signals configured as  
digital inputs and digital outputs. You can configure P1.<0..3> similarly.  
+5 V  
1
LED  
P0.0  
P0.1  
P0.2  
LED  
2
P0.3  
P0.4  
P0.5  
P0.6  
P0.7  
3
4
+5 V  
TTL Signal  
Switch  
GND  
I/O Connector  
1
2
3
4
P0.0 configured as an open collector digital output driving a LED  
P0.2 configured as a active drive digital output driving a LED  
P0.4 configured as a digital input receiving a TTL signal from a gated invertor  
P0.7 configured as a digital input receiving a 0 V or 5 V signal from a switch  
Figure 13. Example of Connecting a Load  
© National Instruments Corporation  
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NI USB-6008/6009 User Guide and Specifications  
 
Caution Exceeding the maximum input voltage ratings or maximum output ratings, which  
are listed in the Specifications section, can damage the DAQ device and the computer.  
National Instruments is not liable for any damage resulting from such signal connections.  
Source/Sink Information  
The default configuration of the NI USB-6008/6009 DIO ports is open  
collector, allowing 5 V operation, with an onboard 4.7 kΩ pull-up resistor.  
An external, user-provided, pull-up resistor can be added to increase the  
source current drive up to a 8.5 mA limit per line as shown in Figure 14.  
The NI USB-6009 ports can also be configured as active drive using the  
DAQmx API, allowing 3.3 V operation with a source/sink current limit of  
8.5 mA. Refer to the NI-DAQmx Help for more information about how to  
set the DIO configuration.  
NI USB-6008/6009  
+5 V  
+5 V  
Re  
Rp  
4.7 KΩ Onboard Resistor  
External  
Pull-up  
Resistor  
Port Pad  
P0.0  
GND  
Rl  
Load  
A
Figure 14. Example of Connecting External User-Provided Resistor  
Complete the following steps to determine the value of the user-provided  
pull-up resistor:  
1. Place an ammeter in series with the load.  
2. Place a variable resistor between the digital output line and the +5 V.  
3. Adjust the variable resistor until the ammeter current reads as the  
intended current. The intended current must be less than 8.5 mA.  
4. Remove the ammeter and variable resistor from your circuit.  
5. Measure the resistance of the variable resistor. The measured  
resistance is the ideal value of the pull-up resistor.  
NI USB-6008/6009 User Guide and Specifications  
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6. Select a static resistor value for your pull-up resistor that is greater than  
or equal to the ideal resistance.  
7. Re-connect the load circuit and the pull-up resistor.  
I/O Protection  
To protect the NI USB-6008/6009 against overvoltage, undervoltage, and  
overcurrent conditions, as well as ESD events, you should avoid these fault  
conditions by using the following guidelines:  
If you configure a DIO line as an output, do not connect it to any  
external signal source, ground signal, or power supply.  
If you configure a DIO line as an output, understand the current  
requirements of the load connected to these signals. Do not exceed  
the specified current output limits of the DAQ device.  
National Instruments has several signal conditioning solutions for  
digital applications requiring high current drive.  
If you configure a DIO line as an input, do not drive the line with  
voltages outside of its normal operating range. The DIO lines have  
a smaller operating range than the AI signals.  
Treat the DAQ device as you would treat any static sensitive device.  
Always properly ground yourself and the equipment when handling  
the DAQ device or connecting to it.  
Power-On States  
Static DIO  
At system startup and reset, the hardware sets all DIO lines to  
high-impedance inputs. The DAQ device does not drive the signal  
high or low. Each line has a weak pull-up resistor connected to it.  
Each of the NI USB-6008/6009 DIO lines can be used as a static DI or DO  
line. You can use static DIO lines to monitor or control digital signals. All  
samples of static DI lines and updates of DO lines are software-timed.  
You can configure PFI 0 as a source for a gated invertor counter input edge  
count task. In this mode, falling-edge events are counted using a 32-bit  
counter. For more information about event timing requirements, refer to the  
Specifications section.  
© National Instruments Corporation  
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NI USB-6008/6009 User Guide and Specifications  
Reference and Power Sources  
The NI USB-6008/6009 creates an external reference and supplies a power  
source. All voltages are relative to COM unless otherwise noted.  
+2.5 External References  
The NI USB-6008/6009 creates a high-purity reference voltage supply for  
the ADC using a multi-state regulator, amplifier, and filter circuit. The  
resulting +2.5 V reference voltage can be used as a signal for self test.  
+5 V Power Source  
The NI USB-6008/6009 supplies a 5 V, 200 mA output. This source can be  
used to power external components.  
Note While the device is in USB suspend, the output is disabled.  
Specifications  
The following specifications are typical at 25 °C, unless otherwise noted.  
Converter type ........................................Successive approximation  
Analog Input  
Analog inputs..........................................8 single-ended, 4 differential,  
software selectable  
Input resolution  
NI USB-6008...................................12 bits differential,  
11 bits single-ended  
NI USB-6009...................................14 bits differential,  
13 bits single-ended  
Max sampling rate1  
NI USB-6008...................................10 kS/s  
NI USB-6009...................................48 kS/s  
AI FIFO ..................................................512 bytes  
Timing resolution ...................................41.67 ns (24 MHz timebase)  
1
System dependent.  
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Timing accuracy..................................... 100 ppm of actual sample rate  
Input range  
Single-ended ................................... 10 V  
Differential...................................... 20 V1, 10 V, 5 V, 4 V,  
2.5 V, 2 V, 1.25 V, 1 V  
Working voltage..................................... 10 V  
Input impedance..................................... 144 kΩ  
Overvoltage protection........................... 35  
Trigger source ........................................ Software or external digital  
trigger  
System noise2  
Single-ended  
10 V range ............................. 5 mVrms  
Differential  
20 V range............................. 5 mVrms  
1 V range ............................... 0.5 mVrms  
Absolute accuracy at full scale, single ended  
Typical at 25 °C  
(mV)  
Maximum over Temperature  
(mV)  
Range  
10  
14.7  
138  
Absolute accuracy at full scale, differential3  
Typical at 25 °C  
(mV)  
Maximum over Temperature  
Range  
20  
(mV)  
14.7  
7.73  
4.28  
3.59  
2.56  
138  
10  
84.8  
58.4  
53.1  
45.1  
5
4
2.5  
1
20 V means that |AI+ – (AI–)| <= 20V. However, AI+ and AI– must both be within 10V of GND. Refer to the Connecting  
Differential Voltage Signals for more information.  
2
3
System noise measured at maximum sample rate.  
Input voltages may not exceed the working voltage range.  
© National Instruments Corporation  
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NI USB-6008/6009 User Guide and Specifications  
Typical at 25 °C  
(mV)  
Maximum over Temperature  
(mV)  
Range  
2
1.25  
1
2.21  
1.70  
1.53  
42.5  
38.9  
37.5  
Analog Output  
Analog outputs........................................2  
Output resolution ....................................12 bits  
Maximum update rate.............................150 Hz, software-timed  
Output range ...........................................0 to +5 V  
Output impedance...................................50 Ω  
Output current drive................................5 mA  
Power-on state ........................................0 V  
Slew rate .................................................1 V/μs  
Short circuit current................................50 mA  
Absolute accuracy (no load)...................7 mV typical, 36.4 mV maximum  
at full scale  
Digital I/O  
Digital I/O  
P0.<0..7> .........................................8 lines  
P1.<0..3> .........................................4 lines  
Direction control.....................................Each channel individually  
programmable as input or output  
Output driver type  
NI USB-6008...................................Open collector (open-drain)  
NI USB-6009...................................Each channel individually  
programmable as active drive  
(push-pull) or open collector  
(open-drain)  
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Compatibility ......................................... TTL, LVTTL, CMOS  
Absolute maximum voltage range ......... –0.5 to 5.8 V with respect to GND  
Pull-up resistor ....................................... 4.7 kΩ to 5 V  
Power-on state........................................ Input  
Digital logic levels  
Level  
Min  
Max  
Units  
Input low voltage  
Input high voltage  
Input leakage current  
–0.3  
2.0  
0.8  
5.8  
50  
V
V
μA  
Output low voltage (I = 8.5 mA)  
Output high voltage  
0.8  
V
Active drive (push-pull), I = –8.5 mA  
Open collector (open-drain), I = –0.6 mA, nominal  
Open collector (open-drain), I = –8.5 mA, with external  
pull-up resistor  
2.0  
2.0  
2.0  
3.5  
5.0  
V
V
V
External Voltage  
+5 V output (200 mA maximum) .......... +5 V typical, +4.85 V minimum  
+2.5 V output (1 mA maximum) ........... +2.5 V typical  
+2.5 V accuracy ..................................... 0.25% max  
Reference temperature drift ................... 50 ppm/°C max  
Counter  
Number of counters................................ 1  
Resolution .............................................. 32 bits  
Counter measurements........................... Edge counting (falling-edge)  
Counter direction.................................... Count up  
Pull-up resistor ....................................... 4.7 kΩ to 5 V  
Maximum input frequency..................... 5 MHz  
Minimum high pulse width.................... 100 ns  
Minimum low pulse width ..................... 100 ns  
© National Instruments Corporation  
23  
NI USB-6008/6009 User Guide and Specifications  
Input high voltage...................................2.0 V  
Input low voltage....................................0.8 V  
Bus Interface  
USB specification...................................USB 2.0 full-speed  
USB bus speed........................................12 Mb/s  
Power Requirements  
USB  
4.10 to 5.25 VDC.............................80 mA typical, 500 mA max  
USB suspend ...................................300 μA typical, 500 μA max  
Physical Characteristics  
If you need to clean the module, wipe it with a dry towel.  
Dimensions  
Without connectors..........................6.35 cm × 8.51 cm × 2.31 cm  
(2.50 in. × 3.35 in. × 0.91 in.)  
With connectors...............................8.18 cm × 8.51 cm × 2.31 cm  
(3.22 in. × 3.35 in. × 0.91 in.)  
I/O connectors.........................................USB series B receptacle,  
(2) 16 position terminal block  
plug headers  
Weight  
With connectors...............................84 g (3 oz)  
Without connectors..........................54 g (1.9 oz)  
Screw-terminal wiring ............................16 to 28 AWG  
Torque for screw terminals.....................0.22–0.25 N · m  
(2.0–2.2 lb · in.)  
NI USB-6008/6009 User Guide and Specifications  
24  
ni.com  
Safety  
Standards  
The NI USB-6008/6009 is designed to meet the requirements of the  
following standards of safety for electrical equipment for measurement,  
control, and laboratory use:  
IEC 61010-1, EN 61010-1  
UL 61010-1, CSA 61010-1  
Note For UL and other safety certifications, refer to the product label, or visit  
ni.com/certification, search by model number or product line, and click the  
appropriate link in the Certification column.  
Voltages  
Connect only voltages that are within these limits.  
Channel-to-GND.................................... 30 V max,  
Measurement Category I  
Measurement Category I is for measurements performed on circuits not  
directly connected to the electrical distribution system referred to as  
MAINS voltage. MAINS is a hazardous live electrical supply system that  
powers equipment. 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.  
Caution Do not use this module for connection to signals or for measurements within  
Measurement Categories II, III, or IV.  
Hazardous Locations  
The NI USB-6008/6009 are not certified for use in hazardous locations.  
Environmental  
The NI USB-6008/6009 device is intended for indoor use only.  
Operating temperature  
(IEC 60068-2-1 and IEC 60068-2-2)..... 0 to 55 °C  
Operating humidity  
(IEC 60068-2-56)................................... 5 to 95% RH, noncondensing  
Maximum altitude.................................. 2,000 m (at 25 °C ambient  
temperature)  
© National Instruments Corporation  
25  
NI USB-6008/6009 User Guide and Specifications  
Storage temperature  
(IEC 60068-2-1 and IEC 60068-2-2)......–40 to 85 °C  
Storage humidity  
(IEC 60068-2-56) ..................................5 to 90% RH, noncondensing  
Pollution Degree (IEC 60664)................2  
Electromagnetic Compatibility  
This product is designed to meet the requirements of the following  
standards of EMC for electrical equipment for measurement, control,  
and laboratory use:  
EN 61326 EMC requirements; Minimum Immunity  
EN 55011 Emissions; Group 1, Class A  
CE, C-Tick, ICES, and FCC Part 15 Emissions; Class A  
Note The NI USB-6008/6009 may experience temporary variations in analog input  
readings when exposed to radiated and conducted RF noise. The device returns to normal  
operation after RF exposure is removed.  
Note For EMC compliance, operate this device according to product documentation.  
CE Compliance  
This product meets the essential requirements of applicable European  
Directives, as amended for CE marking, as follows:  
73/23/EEC; Low-Voltage Directive (safety)  
89/336/EEC; Electromagnetic Compatibility Directive (EMC)  
Note Refer to the Declaration of Conformity (DoC) for this product for any additional  
regulatory compliance information. To obtain the DoC for this product, visit ni.com/  
certification, search by model number or product line, and click the appropriate link  
in the Certification column.  
Waste Electrical and Electronic Equipment (WEEE)  
EU Customers At the end of their life cycle, all products must be sent to a WEEE recycling  
center. For more information about WEEE recycling centers and National Instruments  
WEEE initiatives, visit ni.com/environment/weee.htm.  
NI USB-6008/6009 User Guide and Specifications  
26  
ni.com  
Where to Go for Support  
The National Instruments Web site is your complete resource for technical  
support. At ni.com/support you have access to everything from  
troubleshooting and application development self-help resources to email  
and phone assistance from NI Application Engineers.  
A Declaration of Conformity (DoC) is our claim of compliance with the  
Council of the European Communities using the manufacturer’s  
declaration of conformity. This system affords the user protection for  
electronic compatibility (EMC) and product safety. You can obtain the DoC  
for your product by visiting ni.com/certification. If your product  
supports calibration, you can obtain the calibration certificate for your  
product at ni.com/calibration.  
National Instruments corporate headquarters is located at  
11500 North Mopac Expressway, Austin, Texas, 78759-3504.  
National Instruments also has offices located around the world to help  
address your support needs. For telephone support in the United States,  
create your service request at ni.com/support and follow the calling  
instructions or dial 512 795 8248. For telephone support outside the United  
States, contact your local branch office:  
Australia 1800 300 800, Austria 43 662 457990-0,  
Belgium 32 (0) 2 757 0020, Brazil 55 11 3262 3599,  
Canada 800 433 3488, China 86 21 5050 9800,  
Czech Republic 420 224 235 774, Denmark 45 45 76 26 00,  
Finland 385 (0) 9 725 72511, France 01 57 66 24 24,  
Germany 49 89 7413130, India 91 80 41190000, Israel 972 3 6393737,  
Italy 39 02 413091, Japan 81 3 5472 2970, Korea 82 02 3451 3400,  
Lebanon 961 (0) 1 33 28 28, Malaysia 1800 887710,  
Mexico 01 800 010 0793, Netherlands 31 (0) 348 433 466,  
New Zealand 0800 553 322, Norway 47 (0) 66 90 76 60,  
Poland 48 22 3390150,Portugal 351 210 311 210,Russia 7 495 783 6851,  
Singapore 1800 226 5886, Slovenia 386 3 425 42 00,  
South Africa 27 0 11 805 8197, Spain 34 91 640 0085,  
Sweden 46 (0) 8 587 895 00, Switzerland 41 56 2005151,  
Taiwan 886 02 2377 2222, Thailand 662 278 6777,  
Turkey 90 212 279 3031, United Kingdom 44 (0) 1635 523545  
National Instruments, NI, ni.com, and LabVIEW are trademarks of National Instruments Corporation.  
Refer to the Terms of Use section on ni.com/legal for more information about National  
Instruments trademarks. Other product and company names mentioned herein are trademarks or trade  
names of their respective companies. For patents covering National Instruments products, refer to the  
appropriate location: Help»Patents in your software, the patents.txt file on your CD, or  
ni.com/patents.  
© 2004–2007 National Instruments Corporation. All rights reserved.  
371303H-01  
Jun07  

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