National Instruments NI WLS/ENET-9163 User manual

USER GUIDE AND SPECIFICATIONS
NI WLS/ENET-9163
Wireless/Ethernet Carrier for NI WLS/ENET-9000 Series Devices
This user guide describes how to use the National Instruments
WLS/ENET-9163 carrier and lists specifications.
The NI WLS/ENET-9163 carrier provides a wireless or Ethernet data
acquisition interface for a select number of C Series I/O modules. Refer to
ni.com/daq for information about which C Series I/O modules are
supported by the NI WLS/ENET-9163 carrier.
The NI WLS/ENET-9163 carrier combines with an NI C Series I/O module
to form an NI WLS/ENET-9000 Series device, as shown in Figure 1.
Note Only the NI WLS-9163 carrier comes with an antenna for wireless deployment.
Figure 1. NI WLS/ENET-9163 Carrier Forming the NI WLS/ENET-9000 Series Device
Throughout this manual, the combined NI WLS/ENET-9163 carrier and
C Series I/O module is referred to as the NI WLS/ENET-9000 Series
device.
NI C Series I/O Module
NI WLS/ENET-9163 Carrier
+
=
NATIONAL
INSTRUMENTS
RESET
LINK/ACT
GND
GND
PR0
PR1
10/100
INPUT9-30V
4.5 WMAX
VC
NI WLS-9163
802.11gC SeriesCarrier
NATIONAL
INSTRUMENTS
RESET
LINK/ACT
GND
GND
PR0
PR1
10/100
INPUT9-30V
4.5 WMAX
VC
NI WLS-9163
802.11gC Series Carrier
WLSLINK
ACTIVE
ST
ATUS
POWER
WLS
LINK
POWER
ACTIVE
STATUS
NI WLS/ENET-9000 Series Device
WLSLINK
ACTIVE
ST
A
TUS
POWER
WLS
LINK
POWER
ACTIVE
STATUS

NI WLS/ENET-9163 Carrier User Guide and Specifications 2 ni.com
Dimensions
Figure 2 shows the NI WLS/ENET-9000 Series device dimensions.
Figure 2. NI WLS/ENET-9000 Series Device Dimensions
Safety Guidelines
Operate the NI WLS/ENET-9000 Series device only as described in this
user guide.
Note Some C Series I/O modules may have more stringent certification standards than the
NI WLS/ENET-9163 carrier, and the combined system may be limited by individual
component restrictions.
Caution The NI WLS/ENET-9000 Series device is not certified for use in hazardous
locations.
NATIONAL
INSTRUMENTS
ERROR
STATUS
PWR
7.179 in.
(182.36 mm)
8.436 in.
(214.27 mm)
3.745 in.
(95.11 mm)
4.012 in.
(101.90 mm)
1.466 in.
(37.24 mm)
1.356 in.
(34.43 mm)
WLS LINK

©National Instruments Corporation 3 NI WLS/ENET-9163 Carrier User Guide and Specifications
Hot Surface This icon denotes that the component may be hot. Touching this component
may result in bodily injury.
Safety Guidelines for Hazardous Voltages
If hazardous voltages are connected to the module, take the following
precautions. A hazardous voltage is a voltage greater than 42.4 Vpk or
60 VDC to earth ground.
Caution Ensure that hazardous voltage wiring is performed only by qualified personnel
adhering to local electrical standards.
Caution Do not mix hazardous voltage circuits and human-accessible circuits on the same
module.
Caution Make sure that the NI WLS/ENET-9163 carrier and circuits connected to the
module are properly insulated from human contact.
Caution The NI WLS/ENET-9163 carriers provide no isolation, but some modules offer
isolation. Follow the safety guidelines for each module when using hazardous voltage.
Related Documentation
Each application software package and driver includes information about
writing applications for taking measurements and controlling measurement
devices. Check ni.com/manuals for the most recent hardware
documentation, and refer to Table 1 for a list of locations for driver and
application software documentation. The document location references in
this table assume you have NI-DAQmx 8.8 or later, and where applicable,
version 7.1 or later of the NI application software.

NI WLS/ENET-9163 Carrier User Guide and Specifications 4 ni.com
Table 1. NI Driver and Application Software Documentation
Software Document/Description Location/Topic
NI-DAQmx for
Windows
DAQ Getting Started
Guide—describes how to install
and use the NI-DAQmx driver
software for Windows and your
data acquisition (DAQ) device,
how to confirm the device is
operating properly, and how to
take an NI-DAQmx
measurement.
Start»Programs»National
Instruments»NI-DAQ»
DAQ Getting Started Guide
NI-DAQ Readme—includes
information about NI-DAQmx.
Start»Programs»National
Instruments»NI-DAQ»
NI-DAQ Readme
NI-DAQmx Help—explains how
to get started in your OS and
ADE; provides an NI-DAQmx
overview; includes information
about programming the most
common measurement tasks with
references to examples in CVI/C,
C++, .NET.
Start»Programs»National
Instruments»NI-DAQ»
NI-DAQmx Help

©National Instruments Corporation 5 NI WLS/ENET-9163 Carrier User Guide and Specifications
LabVIEW Getting Started with
LabVIEW—describes the
LabVIEW graphical
programming environment and
the basic LabVIEW features you
use to build data acquisition and
instrument control application.
Start»All Programs»National
Instruments»LabVIEW»
LabVIEW Manuals or navigate to
the labview\manuals directory
and opening
LV_Getting_Started.pdf
LabVIEW Help—provides
information about LabVIEW
programming concepts,
step-by-step instructions for
using LabVIEW, and reference
information about LabVIEW
VIs, functions, palettes, menus,
and tools.
Help»Search the LabVIEW Help
LabVIEW Help Topics Specific to NI-DAQmx
Includes overview information
and a tutorial to learn how to take
an NI-DAQmx measurement in
LabVIEW using the DAQ
Assistant.
From the Contents tab, Getting
Started»Getting Started with DAQ
Describes the LabVIEW
NI-DAQmx VIs and properties.
From the Contents tab,
VI and Function Reference»
Measurement I/O VIs and
Functions
Contains the conceptual and
how-to information you need
to acquire and analyze
measurement data in LabVIEW,
including common
measurements, measurement
fundamentals, NI-DAQmx key
concepts, and device
considerations.
From the Contents tab, Taking
Measurements
Table 1. NI Driver and Application Software Documentation (Continued)
Software Document/Description Location/Topic

NI WLS/ENET-9163 Carrier User Guide and Specifications 6 ni.com
LabWindows™/CVI™LabWindows/CVI Help
Data Acquisition
book—contains NI-DAQmx
measurement concepts and
step-by-step instructions about
creating a measurement task
using the DAQ Assistant.
Help»Contents, then select Using
LabWindows/CVI»
Data Acquisition»Taking an
NI-DAQmx Measurement in
LabWindows/CVI
LabWindows/CVI Help
NI-DAQmx Library
book—contains NI-DAQmx API
overviews and function
reference.
LibraryReference»
NI-DAQmx Library
Measurement
Studio/Microsoft
Visual Studio .NET
Microsoft Visual Studio .NET
Help/NI Measurement Studio
Help—contains NI-DAQmx
methods and properties.
Measurement Studio»
NI Measurement Studio Help and
select NI-DAQmx .NET Class
Library or NI-DAQmx Visual C++
Class Library
ANSI C without
NI Application
Software
NI-DAQmx Help Start»All Programs»National
Instruments»NI-DAQ»
NI-DAQmx Help
NI-DAQmx C Reference
Help—describes the NI-DAQmx
Library functions.
Start»All Programs»National
Instruments»NI-DAQ»
NI-DAQmx C Reference Help
Table 1. NI Driver and Application Software Documentation (Continued)
Software Document/Description Location/Topic

©National Instruments Corporation 7 NI WLS/ENET-9163 Carrier User Guide and Specifications
Device Documentation and Specifications
Check ni.com/manuals for the most recent device and software
documentation. If you do not have Web access, NI-DAQmx includes a
Documentation CD that includes documentation available when
NI-DAQmx released.
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.
.NET Languages
without
NI Application
Software*
NI-DAQmx .NET Help—contains
conceptual topics for using
NI-DAQmx with Visual C# and
Visual Basic .NET.
Start»All Programs»National
Instruments»NI-DAQ»
NI-DAQmx .NET Reference Help.
Expand NI Measurement Studio
Help»NI Measurement Studio
.NET Class Library»Reference to
view the function reference. Expand
NI Measurement Studio Help»
NI Measurement Studio .NET
Class Library»Using the
Measurement Studio .NET Class
Libraries
Visual Studio .NET
Help—contains conceptual topics
for using NI-DAQmx with Visual
C# and Visual Basic .NET.
Help»Contents. Select
Measurement Studio from the
Filtered By drop-down list and
follow the location instructions for
the NI-DAQmx .NET Help.
*With the Microsoft .NET Framework version 1.1 or later, you can use NI-DAQmx to create applications using Visual C#
and Visual Basic .NET without Measurement Studio. You need Microsoft Visual Studio .NET 2003 or Microsoft Visual
Studio 2005 for the API documentation to be installed.
Table 1. NI Driver and Application Software Documentation (Continued)
Software Document/Description Location/Topic

NI WLS/ENET-9163 Carrier User Guide and Specifications 8 ni.com
Installing the Software
NI WLS/ENET-9000 Series device software support for Windows
Vista/XP/2000 is provided by NI-DAQmx.
The DAQ Getting Started Guide, which is accessible from Start»
Programs»National Instruments»NI-DAQ or at ni.com/manuals,
offers NI-DAQmx users step-by-step instructions for installing software
and hardware, configuring channels and tasks, and getting started
developing an application.
Installing Other Software
If you are using other software, refer to the installation instructions that
accompany your software.
Example Programs
The NI-DAQmx CD contains example programs that you can use to
get started programming with the NI WLS/ENET-9000 Series device.
Refer to the NI-DAQmx for WLS/ENET Devices Getting Started Guide that
shipped with your device, and is also accessible from Start»Programs»
National Instruments»NI-DAQ,for more information.
Using the NI WLS/ENET-9000 Series Device
Using the NI WLS/ENET-9000 Series Device on a Desktop
You can use the NI WLS/ENET-9000 Series device on a desktop. Figure 3
shows the stacking grooves for NI ENET-9000 Series devices, and where
to apply the rubber standoffs for the NI WLS/ENET-9000 devices. For
secure desktop use, you can adhere the supplied rubber standoffs to the
underside of the device.
Note NI ENET-9000 Series Only—the NI ENET-9000 Series device has underside
grooves that allow it to be stacked on top of other NI ENET-9000 Series devices.
Caution Do not stack an NI WLS-9000 Series device on top of an NI WLS-9000 Series
device.
Caution This transmitter must not be co-located or operated in conjunction with any other
antenna or transmitter.

©National Instruments Corporation 9 NI WLS/ENET-9163 Carrier User Guide and Specifications
Figure 3. Stacking Grooves and Rubber Standoffs for Desktop Use
Mounting the NI WLS/ENET-9000 Series Device
You can mount the NI WLS/ENET-9000 Series device using a 75 mm
DIN-Rail kit or a panel mount kit. For kit accessory ordering information,
refer to the accessory section of the NI WLS/ENET-9163 product page at
ni.com.
Caution Your installation must meet the following requirements:
• Allows 25.4 mm (1 in.) of clearance above and below the NI WLS/ENET-9000 Series
device for air circulation.
• Allows 50.8 mm (2 in.) of clearance in front of modules for common connector
cabling, such as the 10-terminal detachable screw terminal connector.
1Stacking Grooves
(NI ENET-9000 SeriesOnly)
2Rubber Standoffs
1
2

NI WLS/ENET-9163 Carrier User Guide and Specifications 10 ni.com
Attaching the NI 9910 DIN-Rail
The NI 9910 DIN-Rail kit contains one clip for mounting the device on a
standard 35 mm DIN-Rail. To mount the device on a DIN-Rail, fasten the
DIN-Rail clip to the device using a number 2 Phillips screwdriver and
four M4 ×17 screws. The screws are included in the DIN-Rail kit. Make
sure the DIN-Rail kit is installed as illustrated in Figure 4, with the larger
lip of the DIN-RAIL positioned up. When the DIN-Rail kit is properly
installed, the NI WLS/ENET-9000 Series device is centered on the
DIN-Rail.
Caution Remove the C Series I/O module before mounting the carrier to the DIN-Rail.
Figure 4. NI WLS/ENET-9000 Series Device DIN-Rail Installation
WLS LINK
ACTIVE
STATUS
POWE
NI WLS-9163
NI WLS-9163
RESET
LINK/ACT
GND
GND
PR0
PR1
10/100
802.11gC SeriesCarrier
INPUT 9-30V
10.5 W MAX
VC
NI WLS-9163
NI WLS-9163
RESET
LINK/ACT
GND
GND
PR0
PR1
10/100
802.11gC SeriesCarrier
INPUT 9-30V
10.5 W MAX
VC
OR
WLS LINK
ACTIVE
STATUS
POWE

©National Instruments Corporation 11 NI WLS/ENET-9163 Carrier User Guide and Specifications
Mounting the NI WLS/ENET-9000 Series to a Panel
Thread inserts are located in the NI WLS/ENET-9000 Series device for
mounting it to a panel. Refer to Figure 5 for dimensions.
Figure 5. Device Panel Mounting Dimensions
Caution Remove the C Series I/O module from the NI WLS/ENET-9163 carrier before
you mount the carrier to the panel. After the NI WLS/ENET-9163 carrier is mounted, you
can reinsert the C Series module.
Configuring the Ethernet Connection
You must have an Ethernet network in order to use the
NI WLS/ENET-9000 Series device. For more information about
configuring your Ethernet connection with the NI WLS/ENET-9000 Series
device, refer to the NI-DAQmx for WLS/ENET Devices Getting Started
Guide that shipped with your device. This document is also accessible from
Start»Programs»National Instruments»NI-DAQ.
6.500 in.
(165.10 mm)

NI WLS/ENET-9163 Carrier User Guide and Specifications 12 ni.com
Setting Up the NI WLS/ENET-9000 Series Device
Complete the following steps to prepare the NI WLS/ENET-9000 Series
device for use:
1. Before connecting the hardware, install NI-DAQmx software,
LabVIEW SignalExpress, and the NI-DAQ Device Documentation
Browser. Refer to the DAQ Getting Started Guide for more
information about software installation.
Note The NI-DAQmx software is included on the CD shipped with your kit and is
available for download at ni.com/support. After you install it, the NI-DAQ Device
Documentation Browser is available from Start»Programs»National Instruments»
NI-DAQ»Browse Device Documentation.The DAQ Getting Started Guide is available
after installation from Start»Programs»National Instruments»NI-DAQ»DAQ Getting
Started Guide.
2. If you are not using any mounting accessories or stacking the devices,
attach the provided rubber standoffs to the bottom of the
NI WLS/ENET-9000 Series device, as described in the Using the
NI WLS/ENET-9000 Series Device on a Desktop section.
3. Make sure the NI WLS/ENET-9000 Series device power is
disconnected.
4. Attach a ring lug, as shown in Figure 6, to a 14 AWG (1.6 mm) wire.
Connect the ring lug to the ground terminal on the bottom of the device
using the ground screw. Attach the other end of the wire to the system
ground.

©National Instruments Corporation 13 NI WLS/ENET-9163 Carrier User Guide and Specifications
Figure 6. Ring Lug Attached to the Ground Screw
Note Additionally, attach a wire with a ring lug to all other C Series I/O module cable
shields. You must connect this wire to the ground terminal of the device using the ground
screw. The ground terminal of the device should not be attached to the common terminal
on the C Series I/O module.
Connecting Power to the NI WLS/ENET-9000 Series Device
Power on the NI WLS/ENET-9000 Series device using the included power
adapter or other 9–30 VDC power source.
10/100BaseT(X) Ethernet Port Connection
Use the RJ45 port located on the NI WLS/ENET-9000 Series device
interface to connect the device to an Ethernet network. Use a standard
Category 5 (CAT-5) Ethernet cable (a shielded cable is recommended) to
connect the NI WLS/ENET-9000 Series device to an Ethernet hub, or use
an Ethernet crossover cable to connect the NI WLS/ENET-9000 Series
device directly to a computer.
Note Plug the standard Category 5 Ethernet cable into the RJ-45 Ethernet port on the
NI WLS-9000 Series device to configure the wireless network settings. After initial
configuration, you can remove the Ethernet cable from the NI WLS-9000 Series device
and use the device wireless capabilities.
1RingLug Attached to the Ground Screw
1
RESET
LINK/ACT
GND
GND
PR0
PR1
10/100
INPUT9-30 V
4.5 W MAX
VC
NI WLS-9163
802.11g C Series Carrier
WLSLINK
ERROR
ST
A
TUS
PWR

NI WLS/ENET-9163 Carrier User Guide and Specifications 14 ni.com
Device Interface
Figure 7 shows the NI WLS/ENET-9163 carrier interface.
Figure 7. NI WLS/ENET-9163 Carrier Interface
Reset Button
The NI WLS/ENET-9000 Series devices are equipped with a reset button
as shown in Figure 7.
Pressing the reset button results in the following device responses:
• When pressed for less than 5 seconds, the device reboots with the
current configuration.
• When pressed for 5 seconds or longer, the STATUS LED turns on.
When released, the device reboots into Factory Default Mode, which
returns the device user configuration to the factory-set defaults.
1 RJ-45 Ethernet Port
2LEDs: WLSLINK*, ACTIVE,
STATUS, and POWER
3Reset Button
4 Trigger Connector
5 10/100 LED
6 LINK/ACT LED
7 Power Connector
* NI WLS-9163Carrier Only.
NI WLS-9163
802.11g C Series Carrier
INPUT 9-30 V
4.5 W MAX
10/100
LINK/ACT
VC
PFI0
PFI1
GND
RESET
GND
WLS LINK
ACTIVE
STATUS
POWER
1
4
7
3
2
65

©National Instruments Corporation 15 NI WLS/ENET-9163 Carrier User Guide and Specifications
LED Indicators
The LED indicators for the NI WLS/ENET-9000 Series device are listed in
Table 2.
Table 2. LED State/Device Status
LED Description Color LED State Device Status
10/100 Green On Connected at 100 Mbps
Off No Ethernet connection or 10 Mbps
connection
LINK/ACT Yellow On Ethernet link
Off No Ethernet connection
Blinking Ethernet activity
POWER Green On Power on
Off Power off
STATUS Yell ow On Device firmware booting or
resetting to factory default
Off Normal operation
1 Blink No C Series module detected
2 Blinks Firmware/FPGA image corrupted,
update firmware through MAX
3 Blinks Firmware error, reboot
ACTIVE Green On A DAQ task is running on the
device
Off Device available
WLS LINK*Green On Connected and authenticated
Off Not connected to access point
* NI WLS-9163 Only

NI WLS/ENET-9163 Carrier User Guide and Specifications 16 ni.com
Pinouts
Trigger Connector
Figure 8. Trigger Connector Pinout
Cabling
Table 3 shows the standard Ethernet cable wiring connections for both
normal and crossover cables.
Table 3. Ethernet Cable Wiring Connections
Pin Connector 1
Connector 2
(Normal)
Connector 2
(Crossover)
1white/orange white/orange white/green
2orange orange green
3white/green white/green white/orange
4 blue blue blue
5white/blue white/blue white/blue
6green green orange
7white/brown white/brown white/brown
8brown brown brown
PFI 1
PFI 0
GND
GND

©National Instruments Corporation 17 NI WLS/ENET-9163 Carrier User Guide and Specifications
Figure 9. Ethernet Connector Pinout
Using the NI WLS/ENET-9000 Series Device
C Series I/0 Modules
National Instruments C Series I/O modules provide built-in signal
conditioning and screw terminal, spring terminal, BNC, D-SUB, or
RJ-50 connectors. A wide variety of I/O types are available, allowing
you to customize the your system to meet your application needs.
You can swap C Series modules when the NI WLS/ENET-9163 carrier is
plugged in. After swapping modules, even if it is the same module type, you
must discover the device through MAX again.
Because the modules contain built-in signal conditioning for extended
voltage ranges or industrial signal types, you can make your
wiring connections directly from the C Series I/O modules to your
sensors/actuators. In most cases, the C Series I/O modules provide isolation
from channel-to-earth ground.
AI Sample Timing
The NI WLS/ENET-9000 Series device contains an advanced analog input
timing engine. Timing and synchronization signals are available through
the PFI lines. Refer to the Analog Input Timing Signal section for more
information about the configuration of these signals.
Connector 1 Connector 2
Pin 1 Pin 1 Pin 8Pin 8

NI WLS/ENET-9163 Carrier User Guide and Specifications 18 ni.com
Analog Input
To perform analog input measurements, insert a supported analog input
C Series I/O module into the NI WLS/ENET-9163 carrier. The
measurement specifications, such as number of channels, channel
configuration, sample rate, and gain, are determined by the type of C Series
I/O module used. For more information and wiring diagrams, refer to the
documentation included with your C Series I/O modules.
Analog Input Triggering
A trigger is a signal that causes an action, such as starting or stopping the
acquisition of data. When you configure a trigger, you must decide how
you want to produce the trigger and the action you want the trigger to cause.
The NI WLS/ENET-9000 Series device supports internal software
triggering and external digital triggering.
Three triggers are available: AI Start Trigger Signal, AI Reference Trigger
Signal, and AI Pause Trigger Signal.
AI Start Trigger Signal
Use the AI Start Trigger (ai/StartTrigger) signal to begin a measurement
acquisition. A measurement acquisition consists of one or more samples. If
you do not use triggers, begin a measurement with a software command.
Once the acquisition begins, configure the acquisition to stop in one of the
following ways:
• When a certain number of points is sampled (in finite mode)
• With a software command (in continuous mode)
An acquisition that uses a start trigger is sometimes referred to as a
posttriggered acquisition. That is, samples are measured only after the
trigger.
Using a Digital Source
To use ai/StartTrigger with a digital source, specify a source and an edge.
NI-DAQmx can provide an internal start trigger or PFI 0 may be used.
Refer to the Device Routing in MAX topic in the NI-DAQmx Help or the
LabVIEW Help in version 8.0 or later for more information.

©National Instruments Corporation 19 NI WLS/ENET-9163 Carrier User Guide and Specifications
The NI-DAQmx Help is available after installation from Start» Programs»
National Instruments»NI-DAQ»NI-DAQmx Help. To view the
LabVIEW Help, in version 8.0 or later, select Help»Search the LabVIEW
Help in LabVIEW. Alternately, to download the LabVIEW Help, go to
ni.com/manuals.
You also can specify whether the measurement acquisition begins on the
rising edge or falling edge of ai/StartTrigger.
Routing AI Start Trigger to an Output Terminal
You can route ai/StartTrigger to the PFI 0 terminal. The output polarity is
selectable.
AI Reference Trigger Signal
Use a reference trigger (ai/ReferenceTrigger) signal to stop a measurement
acquisition. To use a reference trigger, specify a buffer of finite size and
a number of pretrigger samples (samples that occur before the reference
trigger). The number of posttrigger samples (samples that occur after the
reference trigger) desired is the buffer size minus the number of pretrigger
samples.
When the acquisition begins, the NI WLS/ENET-9000 Series device begins
to fill the buffer. After the specified number of pretrigger samples are
captured, the NI WLS/ENET-9000 Series device begins to look for the
reference trigger condition. If the reference trigger condition occurs before
the NI WLS/ENET-9000 Series device captures the specified number of
pretrigger samples, the NI WLS/ENET-9000 Series device ignores the
condition.
If the buffer becomes full, the NI WLS/ENET-9000 Series device
continuously discards the oldest samples in the buffer to make space for
the next sample. This data can be accessed with some limitations before
the NI WLS/ENET-9000 Series device discards it. Refer to the
KnowledgeBase document, Can a Pretriggered Acquisition be
Continuous?, for more information. To access this KnowledgeBase, go to
ni.com/info and enter the info code rdcanq.

NI WLS/ENET-9163 Carrier User Guide and Specifications 20 ni.com
When the reference trigger occurs, the NI WLS/NET-9163 Series device
continues to write samples to the buffer until the buffer contains the number
of posttrigger samples desired. Figure 10 shows the final buffer.
Figure 10. Reference Trigger Final Buffer
Using a Digital Source
To use ai/ReferenceTrigger with a digital source, specify a source and an
edge. PFI 0 can provide the source. Refer to the Device Routing in MAX
topic in the NI-DAQmx Help or the LabVIEW Help in version 8.0 or later
for more information.
The NI-DAQmx Help is available after installation from Start»Programs»
National Instruments»NI-DAQ»NI-DAQmx Help. To view the
LabVIEW Help, in version 8.0 or later, select Help»Search the LabVIEW
Help in LabVIEW. Alternately, to download the LabVIEW Help, go to
ni.com/manuals.
You also can specify whether the measurement acquisition stops on the
rising edge or falling edge of ai/ReferenceTrigger.
AI Pause Trigger Signal
The Pause Trigger signal can be generated from external sources. Any time
the signal deasserts, you can use the Pause Trigger signal to pause the
acquisition.
You can use the AI Pause Trigger (ai/PauseTrigger) signal to pause and
resume a measurement acquisition. The internal sample clock pauses while
the external trigger signal is active and resumes when the signal is inactive.
You can program the active level of the pause trigger to be high or low.
Using a Digital Source
To use ai/PauseTrigger, specify a source and a polarity on PFI 0.
Re
f
erence Trigger
Pretrigger Samples
Complete Buffer
Posttrigger Samples