NI CF-6004 Manual de usuario
USER GUIDE AND SPECIFICATIONS
NI CF-6004
This user guide describes how to use the National Instruments CF-6004
data acquisition (DAQ) device and lists specifications.
Introduction
The NI CF-6004 provides connection to four analog input (AI) channels
and four digital input/output (DIO) channels, with a type II CompactFlash
interface.
Figure 1. NI CF-6004
NI CF-6004
4-Ch. Input, 14-Bit,
Multifunction DAQ
INSERT CARD
NI CF-6004 User Guide and Specifications 2 ni.com
Figure 2. NI CF-6004 Installation
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 CF-6004.
Do not operate the NI CF-6004 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 user guide. You must have all covers and filler panels
installed during operation of the device.
1 PDA with Type II CompactFlash Slot
2 NI CF-6004
3 I/O Cable
4 Accessory
5 Input/Output Cable
1
2
3
4
5
©National Instruments Corporation 3 NI CF-6004 User Guide and Specifications
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 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.
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.
NI CF-6004 User Guide and Specifications 4 ni.com
• 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 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.
Related Documentation
The following section lists documentation that is available for use with the
NI CF-6004.
NI-DAQmx Base (Linux/Mac OS X/LabVIEW PDA 8.x)
The NI-DAQmx Base Getting Started Guide describes how to install your
NI-DAQmx Base software, your NI-DAQmx Base-supported DAQ device,
and how to confirm that your device is operating properly. In Windows,
select Start»All Programs»National Instruments»NI-DAQmx Base»
Documentation»Getting Started Guide.
Getting Started with NI-DAQmx Base for Linux and Mac Users describes
how to install your NI-DAQmx Base software, your NI-DAQmx
Base-supported DAQ device, and how to confirm that your device is
operating properly on your Mac/Linux machine.
The NI-DAQmx Base Readme lists which devices are supported by this
version of NI-DAQmx Base. In Windows, select Start»All Programs»
National Instruments»NI-DAQmx Base»DAQmx Base Readme.
The NI-DAQmx Base VI Reference Help contains VI reference and
general information about measurement concepts. In LabVIEW, select
Help»NI-DAQmx Base VI Reference Help.
©National Instruments Corporation 5 NI CF-6004 User Guide and Specifications
The NI-DAQmx Base C Reference Help contains C reference and general
information about measurement concepts. In Windows, select Start»All
Programs»National Instruments»NI-DAQmx Base»Documentation»
C Function Reference Help.
Note All NI-DAQmx Base documentation for Linux is installed at /usr/local/
natinst/nidaqmxbase/documentation.
Note All NI-DAQmx Base documentation for Mac OS X is installed at
/Applications/National Instruments/NI-DAQmx Base/documentation.
Example Programs
The NI-DAQmx Base software ships with example programs you can use
to get started programming with the NI CF-6004. Refer to the NI-DAQmx
Base Getting Started Guide that shipped with your device, and is also
accessible from Start»All Programs»National Instruments»
NI-DAQmx Base»Documentation, for more information.
Note For information about non-Windows operating system support, refer to
ni.com/info and enter BaseGSGML.
Training Courses
If you need more help getting started developing an application with NI
products, NI offers training courses. To enroll in a course or obtain a
detailed course outline, refer to ni.com/training.
Technical Support on the Web
For additional support, refer to ni.com/support or zone.ni.com.
Installing the Software
Software support for the NI CF-6004 for Windows Vista/XP/2000 is
provided by NI-DAQmx Base.
Note For non-Windows operating support, refer to ni.com/info and enter BaseGSGML.
NI CF-6004 User Guide and Specifications 6 ni.com
Block Diagram
The following block diagram shows key functional components of the
NI CF-6004.
Figure 3. NI CF-6004 Device Block Diagram
Logic
CompactFlash Bus
+3.3V
FIFO
ADC AMP MUX
AI <0..3>
PFI <0..3>
15–Pin Connector
©National Instruments Corporation 7 NI CF-6004 User Guide and Specifications
I/O Connector
The NI CF-6004 is available with either a SH-15-15 DB-15 or a
SH-15-15-B bare-wire adapter cable. Additional accessories are available
for custom cable and DIN-rail applications. For more information, visit
ni.com.
Table 1 lists the terminal assignments for the SH-15-15 DB-15 adapter
cable.
Table 1. Terminal Assignments
Module Terminal Signal Wire Color
1AI GND White or Red
2AI 0 White/Black
3AI 1 Red/Black
4AI 2 Yellow/Black
5AI 3 Green/Black
6RSRVD Green or Blue
7RSRVD Blue/Black
8+3.3 V Brown/White
9NC —
10 D GND Orange or Gray
11 PFI 0 Orange/Black
12 PFI 1 Gray/Black
13 PFI 2 Purple/White
14 PFI 3 Pink/Black
15 D GND Purple or Pink
9
1
8
15
NI CF-6004 User Guide and Specifications 8 ni.com
Signal Descriptions
Table 2 describes the signals available on the I/O connectors.
Table 2. Signal Descriptions
Signal Name Reference Direction Description
AI GND — — Analog Ground—These terminals are
the reference point for single-ended AI
measurements. The AI GND and D GND
ground references are connected on the device.
AI <0..3> AI GND Input Analog Input Channels 0 to 3—For
single-ended measurements, each signal is an
analog input voltage channel.
+3.3 V D GND Output +3.3 V Power Source—Provides +3.3 V power
up to 10 mA.
D GND — — Digital Ground—D GND supplies the
reference for PFI <0..3> and +3.3 V. The
AI GND and D GND ground references are
connected on the device.
PFI <0..3> D GND Input or
Output
Programmable Function I/O or Digital
I/O—Each of these terminals are configurable
as a PFI terminal or a digital I/O terminal. You
can individually configure each digital I/O
signal as an input or output. You can configure
any of the terminals as a PFI input for a digital
AI trigger.
©National Instruments Corporation 9 NI CF-6004 User Guide and Specifications
Analog Input
You can connect analog input signals to the NI CF-6004 through the I/O
connector. Refer to Table 2 for more information about connecting analog
input signals.
Analog Input Circuitry
Figure 4 illustrates the analog input circuitry of the NI CF-6004.
Figure 4. Analog Input Circuitry
MUX
The NI CF-6004 has one analog-to-digital converter (ADC). The
multiplexer (MUX) routes one AI channel at a time to the ADC.
AMP
The amplifier provides an effective input gain of 1.
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 CF-6004 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.
AI
AMP AI FIFO
ADC
MUX
NI CF-6004 User Guide and Specifications 10 ni.com
Connecting Single-Ended Voltage Signals
To connect single-ended voltage signals to the NI CF-6004, connect the
positive voltage signal to the desired AI terminal, and the ground signal
to an AI GND terminal.
Figure 5. Connecting a Single-Ended Voltage Signal
Digital Trigger
When an AI task is defined, you can configure any one of the PFI inputs as
a digital trigger input. When the digital trigger is enabled, the AI task waits
for either a rising or falling edge on any PFI before starting the acquisition.
To use AI Start Trigger with a digital source, specify the desired PFI input
as the source and select the desired edge.
AI
+
–
Voltage
Source NI CF-6004
AI GND
Tabla de contenidos
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