National Instruments NI PXI-6541 User manual

[phone] | [email protected] | artisantg.com
-~
ARTISAN
®
~I
TECHNOLOGY
GROUP
Your definitive source
for
quality
pre-owned
equipment.
Artisan Technology
Group
Full-service,
independent
repair
center
with
experienced
engineers
and
technicians
on staff.
We
buy
your
excess,
underutilized,
and
idle
equipment
along
with
credit
for
buybacks
and
trade-ins
.
Custom
engineering
so
your
equipment
works
exactly as
you
specify.
•
Critical
and
expedited
services
•
Leasing
/
Rentals/
Demos
• In
stock/
Ready-to-ship
•
!TAR-certified
secure
asset
solutions
Expert
team
ITrust
guarantee
I
100%
satisfaction
All
tr
ademarks,
br
a
nd
names, a
nd
br
a
nd
s a
pp
earing here
in
are
th
e property of
th
e
ir
r
es
pecti
ve
ow
ner
s.
Visit our website - Click HERE

GETTING STARTED GUIDE
NI Digital Waveform
Generator/Analyzer
This document explains how to install, configure, and test a National Instruments digital
waveform generator/analyzer and how to program it using NI-HSDIO (High-Speed Digital I/O)
instrument driver software. This document applies specifically to the following devices:
• NI PXI/PCI-6541/6542
• NI PXIe-6544/6545/6547/6548
• NI PXI/PCI-6551/6552
• NI PXIe-6555/6556
• NI PXI/PCI-6561/6562
For more information about features and programming, refer to the NI Digital Waveform
Generator/Analyzer Help at Start»All Programs»National Instruments»NI-HSDIO»
Documentation»NI Digital Waveform Generator-Analyzer Help.
Note If you are running Windows 8, you may not have a Start menu. To access
National Instruments programs and documentation, open the Start screen, type the
name of the file or folder you want to access, and select the appropriate icon from the
search results.
For example, to access the NI Digital Waveform Generator/Analyzer Help, open the
Start screen, type NI Digital Waveform Generator/Analyzer Help, and
select the appropriate icon from the results. To access device specifications, open the
Start screen, type your device number (for example, 6556), and select the
specifications document for your device. Use this method any time the Start menu is
referenced in this document.
Refer to the specifications document that ships with your device for detailed specifications.
The most recent versions of product documentation are available at ni.com/manuals. Visit
ni.com/updates for the latest version of NI-HSDIO driver software.
Ρ΅νιϋΠȂ඾ུࢊβȜΐ܄ȃ

2|ni.com |NI Digital Waveform Generator/Analyzer Getting Started Guide
Contents
1. Verifying the System Components ....................................................................................... 4
2. Unpacking .............................................................................................................................4
3. Verifying the Kit Contents....................................................................................................4
Documentation..................................................................................................................5
Ferrites (NI PXIe-6544/6545/6547/6548 Only) ............................................................... 5
EMI Gasket (NI PXI-6551/6552 Only) ............................................................................5
4. Installing the Software .......................................................................................................... 5
Choose and Install Your ADE ..........................................................................................5
Install NI-HSDIO.............................................................................................................. 6
NI Script Editor.........................................................................................................6
(Optional) Install the NI Digital Waveform Editor .......................................................... 6
5. Installing the Hardware.........................................................................................................6
Installing a PXI Module....................................................................................................7
Installing a PXI Express Module ......................................................................................8
Installing a Two-Slot PXI Express Module......................................................................9
Maintaining PXI/PXI Express Systems............................................................................9
Uninstalling PXI/PXI Express Modules ...........................................................................9
Installing a PCI Device ..................................................................................................... 10
Maintaining PCI Systems .................................................................................................11
6. Configuring and Testing in MAX......................................................................................... 11
Using the Test Panel to Generate and Acquire Digital Data ............................................12
7. Connecting Signals ............................................................................................................... 14
Connecting Cables ............................................................................................................14
SMA/SMB Cabling...................................................................................................14
NI 654x/655x Cabling .............................................................................................. 14
NI 656x Cabling........................................................................................................15
Using Accessories............................................................................................................. 15
Creating a Custom Accessory................................................................................... 19
Wiring for Common Measurements ................................................................................. 20
Dynamic Generation .................................................................................................20
Dynamic Acquisition ................................................................................................20
8. Programming the Digital Waveform Generator/Analyzer.................................................... 21
NI-HSDIO Instrument Driver ........................................................................................... 21
Acquiring the Data.................................................................................................... 21
NI SignalExpress Limited Edition (LE) ...........................................................................21
NI-HSDIO Examples ........................................................................................................ 22
Appendix A: Device Front Panels ............................................................................................22
NI 654x/6551/6552 Front Panels and Connectors ............................................................ 22
NI 6555/6556 Front Panels and Connectors .....................................................................27
NI 656xFront Panels and Connectors ..............................................................................30
Appendix B: Troubleshooting .................................................................................................. 35
Device Front Panel ACCESS LED on PXI Module is Off When PXI Chassis is On...... 35
Device Does Not Appear in MAX....................................................................................35
Device Failed the Self-Test...............................................................................................35
I Received a Thermal or Power Shutdown Error..............................................................36

NI Digital Waveform Generator/Analyzer Getting Started Guide |© National Instruments |3
Performance Issues Using MXI Connection .................................................................... 36
Where to Go for Support .......................................................................................................... 37

4|ni.com |NI Digital Waveform Generator/Analyzer Getting Started Guide
1. Verifying the System Components
Your system must meet certain requirements to use NI digital waveform generator/analyzers
with NI-HSDIO. For more information about minimum system, recommended system, and
supported application development environments (ADEs), refer to the NI-HSDIO Instrument
Driver Readme, which is available on the NI-HSDIO DVD.
Note After you install NI-HSDIO, you can access the NI-HSDIO Instrument
Driver Readme at Start»All Programs»National Instruments»NI-HSDIO»
Documentation.
2. Unpacking
The NI digital waveform generator/analyzer ships in an antistatic package to prevent
electrostatic discharge (ESD). ESD can damage several components on the device.
Caution Never touch the exposed pins or connectors.
To avoid ESD damage when handling the device, take the following precautions:
• Ground yourself with a grounding strap or by touching a grounded object.
• Touch the antistatic package to a metal part of your computer chassis before removing the
device from the package.
Remove the device from the package and inspect it for loose components or any other signs of
damage. Notify NI if the device appears damaged in any way. Do not install a damaged device
in your computer or chassis.
Store the device in the antistatic package when the device is not in use.
3. Verifying the Kit Contents
Verify that the kit contains the following items:
NI-HSDIO instrument driver software DVD. This DVD installs the NI-HSDIO driver,
which includes the NI Digital Waveform Generator/Analyzer Help and other
documentation. Refer to the Documentation section for a list of possible additional
documentation.
NI Digital Waveform Generator/Analyzer Getting Started Guide
NI digital waveform generator/analyzer device
Mounting screw (PCI devices only)

NI Digital Waveform Generator/Analyzer Getting Started Guide |© National Instruments |5
Documentation
The NI digital waveform generator/analyzer kit may also include the following documents:
• NI digital waveform generator/analyzer specifications—This printed document provides
specifications for your device.
•Read Me First: Safety and Electromagnetic Compatability
•Maintain Forced-Air Cooling Note to Users
•Retrofitting Your PXI Module Note to Users (NI PXI-6551/6552 only)
•Using Ferrites to Reduce High-Frequency Emissions Note to Users (applicable devices
only)
Ferrites (NI PXIe-6544/6545/6547/6548 Only)
The NI PXIe-6544/6545/6547/6548 kit also includes two ferrites and documentation that
describes under what conditions you should install the ferrites. Refer to the Using Ferrites to
Reduce High-Frequency Emissions Note to Users for more information about using the ferrites.
EMI Gasket (NI PXI-6551/6552 Only)
The NI PXI-6551/6552 kit also includes an EMI gasket and documentation that describes under
what conditions you should install the gasket. Refer to step 5. Installing the Hardware for more
information about the gasket.
4. Installing the Software
This section describes the software installation process for the NI digital waveform
generator/analyzer.
Choose and Install Your ADE
You can create applications for your digital waveform generator/analyzer using LabVIEW,
LabWindows™/CVI™, or Microsoft Visual C++.
LabVIEW features interactive graphics, a state-of-the-art interface, and a powerful graphical
programming language. LabWindows/CVI is a complete ANSI C ADE that features an
interactive user interface, code generation tools, and the LabWindows/CVI Data Acquisition
libraries. Using LabVIEW or LabWindows/CVI can greatly reduce your application
development time.
If you have not already installed the ADE, follow the instructions in the product documentation
to install your ADE now.

6|ni.com |NI Digital Waveform Generator/Analyzer Getting Started Guide
Install NI-HSDIO
NI-HSDIO features a set of operations and attributes that allow you to programmatically
configure and control the digital waveform generator/analyzer.
To install NI-HSDIO, complete the following steps:
1. Insert the NI-HSDIO DVD. The NI-HSDIO installer should open automatically. If not,
select Start»Run, and enter
x :\setup.exe, where x is the letter of the DVD drive.
2. Follow the instructions in the installation prompts. For troubleshooting and operating
system-specific instructions, refer to the Hardware Installation/Configuration
Troubleshooter at ni.com/support.
(Windows 7/Vista) Users may see access and security messages during installation.
Accept the prompts to complete the installation.
3. When the installer finishes, a dialog box appears that asks if you want to restart, shut down,
or restart later. Select Restart.
4. If you are using a system running the LabVIEW Real-Time Module, download NI-HSDIO
to the target using MAX. Refer to the MAX Remote Systems Help by selecting Help»
Help Topics»Remote Systems in MAX.
NI Script Editor
The NI Script Editor is included on the NI-HSDIO DVD and is installed when you install the
driver. The NI Script Editor provides an intuitive interface to help you develop linking and
looping waveform generation operations. NI Script Editor Help contains more information
about the NI Script Editor. You can access NI Script Editor Help by launching the NI Script
Editor and selecting Help»NI Script Editor Help from the toolbar.
Note Visit ni.com/updates for the latest version of NI-HSDIO driver software.
(Optional) Install the NI Digital Waveform Editor
The NI Digital Waveform Editor (DWE) is included with the higher-memory versions of
NI digital waveform generator/analyzers and also can be purchased separately at ni.com.
The NI DWE allows you to easily import data from popular third-party electronic design
automation (EDA) programs, create your own waveforms, edit these waveforms, and view
acquired waveforms.
If you are using the NI DWE, install it after you install NI-HSDIO.
5. Installing the Hardware
To install your NI digital waveform generator/analyzer, follow the instructions in the section that
describes your hardware platform.
When installing your hardware, follow the instructions in this section to ensure that your device
can cool itself effectively. If the device temperature rises above the optimal operating
temperature range, the device disables itself, and MAX or NI-HSDIO notifies you with an error

NI Digital Waveform Generator/Analyzer Getting Started Guide |© National Instruments |7
message. For more information about re-enabling your device, refer to the I Received a Thermal
or Power Shutdown Error section in Appendix B: Troubleshooting.
Installing a PXI Module
To install a PXI module, refer to Figure 1 and complete the following steps:
Figure 1. PXI Installation
1. Power off the chassis before installing the module.
2. If the chassis has multiple fan speed settings, ensure that the fans are set to the highest
setting. Do not set the fan speed to low or turn the fan off.
3. Position the chassis to allow plenty of space between the chassis fan intake and exhaust
vents. Blocking the fans affects the air flow needed for cooling. For more information about
chassis cooling, refer to the chassis documentation.
4. If you need to use an EMI gasket to reduce high-frequency emissions, install it now. Refer
to the Retrofitting Your PXI Module Note to Users for gasket installation instructions.
5. Remove the packaging material on the PXI connector and on the screws.
6. Ensure that the ejector handle is in the unlatched (downward) position, as shown in
Figure 1.
7. Holding the module by the ejector handle, slide it into an empty slot, ensuring that the base
card (on the left when looking at the front of the module) engages with the card guides in
the chassis.
8. Slide the module completely into the chassis and latch by pulling up on the ejector handle.
9. Tighten the captive screws at the top and bottom of the module front panel.
10. Before operating the module, install all chassis covers and filler panels. Missing filler
panels disrupt the necessary air circulation in the chassis.
1 PXI Chassis
2 Ejector Handle
3 Captive Screw
4 NI PXI Device
3
2
4
NI PXI-1042
1

8|ni.com |NI Digital Waveform Generator/Analyzer Getting Started Guide
Note NI recommends that you install slot blockers between modules to maximize
air flow. NI recommends using the PXI Chassis Slot Blocker Kit, part number
778678-01, available for purchase at ni.com.
11. Plug in and power on the chassis.
NI PXI modules are sensitive instruments that should be handled carefully. Do not expose the
module to temperatures or humidity beyond the rated maximums. Keep the module free of dust
by cleaning with compressed air only. Do not clean the module with any solvents or liquids. For
more information about module cooling, refer to the guidelines in the Maintain Forced-Air
Cooling Note to Users included with your NI digital waveform generator/analyzer.
Installing a PXI Express Module
Follow the installation instructions in the Installing a PXI Module section to install a
PXI Express module in a PXI Express-compatible slot of the chassis. Refer to the chassis
documentation for more information about which slots are designated for PXI Express modules.
Figure 2 shows the correct installation of a PXI Express module into a compatible chassis slot.
Figure 2. PXI Express Module Installation
1 PXI Express Chassis
2 Ejector Handle in Down Position
3 NI PXI Express Module
4 Captive Screw
3
2
1
4

NI Digital Waveform Generator/Analyzer Getting Started Guide |© National Instruments |9
Installing a Two-Slot PXI Express Module
Follow the installation instructions in the Installing a PXI Express Module section to install a
two-slot PXI Express module in a PXI Express-compatible slot of the chassis. For dual-slot
modules with two backplane connectors, like the NI 6555/6556, the module must be installed
into two adjacent PXI Express-compatible slots. These slots may be hybrid PXI Express slots.
Refer to the chassis documentation for more information about which slots are designated for
PXI Express modules. Figure 3 shows the correct installation of a PXI Express module into a
compatible chassis slot.
Figure 3. Two-Slot PXI Express Module Installation
Maintaining PXI/PXI Express Systems
Some chassis include fan filters. Clean the fan filters on the chassis regularly to prevent fan
blockage and ensure efficient air circulation. Cleaning frequency depends on the amount of use
and the operating environment. For specific information about cleaning procedures and other
recommended maintenance, refer to the module specifications and the chassis user
documentation.
Uninstalling PXI/PXI Express Modules
When removing PXI/PXI Express modules from the chassis, first power off the chassis. Then,
ensure that you are grounded with a grounding strap or are touching a grounded metal surface.
To avoid ESD, do not touch the exposed pins of the PXI/PXI Express connector or any exposed
circuitry on the module. When not in use, PXI/PXI Express modules should be stored in the
original antistatic packaging to avoid damage.
1 PXI Express Chassis
2 Ejector Handle in Down Position
3 NI PXI Express Two-Slot Module
4 Captive Screw
4
3
2
1

10 |ni.com |NI Digital Waveform Generator/Analyzer Getting Started Guide
Hot Surface During operation, the metal surfaces of PXI/PXI Express modules
may become hot. Be careful when removing the module from the chassis or when
moving it to a different peripheral slot. When removing the module, hold it by only
the ejector handle and front panel.
Installing a PCI Device
To install your PCI device, complete the following steps:
1. Power off and unplug the PC.
2. Remove the PC cover.
3. If the PC has multiple fan speed settings, ensure that the fans are set to the highest setting.
4. Insert the device into an open PCI slot, as shown in Figure 4.
Figure 4. PCI Installation
NI recommends either leaving the slot adjacent to the fan side of the device empty or using
lower-profile devices in the slot adjacent to the fan side.
5. Secure the device with the screw provided in the kit.
Caution It is important to completely screw the device into the PCI slot, both for
mechanical stability and for creating a solid ground connection, which reduces signal
noise. Some computer manufacturers use a plastic securing lever to secure PCI
devices; such a lever is unacceptable and must be removed, or you must use a
different chassis. Improperly secured devices may affect the accuracy of device
specifications.
1 NI PCI Device 2PCISlot 3 Personal Computer
1
2
3

NI Digital Waveform Generator/Analyzer Getting Started Guide |© National Instruments |11
6. Before operating the device, install all filler panels. Missing filler panels disrupt the
necessary air circulation in the PC.
7. Replace the PC cover.
8. Plug in and power on the PC.
Maintaining PCI Systems
Inspect the onboard fan on a regular basis to prevent fan blockage and ensure efficient air
circulation. Cleaning frequency depends on the amount of use and the operating environment.
6. Configuring and Testing in MAX
To configure and test the NI digital waveform generator/analyzer in MAX, complete the
following steps:
1. Launch MAX to configure and test the digital waveform generator/analyzer. MAX should
automatically detect the device you installed.
2. Expand Devices and Interfaces.
If you are using an NI digital waveform generator/analyzer with the LabVIEW Real-Time
Module, expand Remote Systems. Find your target IP address or name, expand it, and then
expand Devices and Interfaces.
3. Check that your device appears under Devices and Interfaces.
Note If your device does not appear under Devices and Interfaces, MAX did not
detect the device, so you might need to refresh MAX by selecting File»Refresh from
the MAX menu or pressing <F5>.
4. You can perform a self-test on devices listed under Devices and Interfaces. The self-test
ensures that the device is installed correctly and can communicate with NI-HSDIO. To
perform a self-test, complete the following steps:
a. Right-click the device you want to test.
b. Select Self-Test, shown in Figure 5.

12 |ni.com |NI Digital Waveform Generator/Analyzer Getting Started Guide
Figure 5. Configuration Tree Shortcut Menu
c. When the self-test finishes, a dialog box indicates if an error occurred. If an error
occurred, refer to ni.com/support for troubleshooting information.
Tip If you need to reset the device with a hard reset, you can do so by right-clicking
the device and selecting Reset Device from the shortcut menu shown in Figure 5.
5. Record the device name assigned to the digital device. You need this information when you
program the device.
Using the Test Panel to Generate and Acquire Digital
Data
To verify your device configuration, use the device test panel in MAX to generate and acquire
simple digital data using your device by completing the following steps:
1. Remove any signal connections to your device.
2. Right-click the device under the appropriate Chassis, and select Test Panels as shown in
Figure 5.
3. Click the Generation tab.
4. Select the Dynamic tab on the side of the pane.
5. Click Select All to select all of your channels. The digital waveform now appears in the
graph.
6. Enter the frequency in the Clock Frequency control, located on the left side of the test
panel.
7. Enter values for the generation and acquisition voltages in the controls below the Clock
Frequency control. You can choose from standard logic families (NI 654x/655x) or enter
High and Low values to create your own custom levels (NI 655x).

NI Digital Waveform Generator/Analyzer Getting Started Guide |© National Instruments |13
8. Choose a fill pattern. The following figure shows the pattern control and the first few
signals in the window.
Tip When generating a Marching Ones or Marching Zeroes waveform, it is
convenient to make the waveform size a multiple of the number of selected channels.
9. Click Play to generate the waveform shown in the graph on the selected channels. The
default generation option is Continuous, but you can toggle this setting using the control
below the graph.
The Play and Stop buttons are shown in the following figure.
Because the data channels on the NI digital waveform generator/analyzer are bidirectional,
while the data is being continuously generated on all of the channels, as in the previous step,
you can acquire the data being generated.
Note Refer to the specifications for your device for information about the setup and
hold times and propagation delays associated with generation and acquisition
operations. At some frequencies, generating and acquiring data on the same channels
when no cable is attached to the DIGITAL DATA & CONTROL (DDC) connector
violates these timing parameters and results in incorrectly sampled data. For
information about proper signal acquisition, refer to the
NI Digital Waveform
Generator/Analyzer Help
.
To acquire the waveform, complete the following steps:
1. Click the Acquisition tab.
2. Click Play. The device acquires the digital data that you generated in the previous steps,
and the data is displayed on the graph.
3. Click Close when you are finished.

14 |ni.com |NI Digital Waveform Generator/Analyzer Getting Started Guide
7. Connecting Signals
This section discusses connections you can make to the device and how to connect signals to the
device for performing dynamic acquisition and dynamic generation. For device front panel
diagrams and connector descriptions, refer to Appendix A: Device Front Panels.
Connecting Cables
SMA/SMB Cabling
To make connections to the NI digital waveform generator/analyzer front panel SMA/SMB jack
connectors, use a shielded 50 Ωcoaxial cable with an appropriate plug end.
NI 654x/655x Cabling
Use an NI SHC68-C68-D4 cable for connections to the NI 654x/655xDigital Data and
Control (DDC) connector and the REMOTE SENSE connector (NI 6555/6556 only). The
NI SHC68-C68-D4 is designed for single-ended, high-speed digital signal transmission. The
cable is shielded, with individual microcoaxial 50 Ωlines for each signal. An unshielded
NI C68-C68-D4 cable may also be used.
NI 6555/6556 Cabling
If leakage is a concern for your application, use the NI SHC68-C68-D4 low-leakage cable
(NI part number 152870A-01) when connecting to the DDC and REMOTE SENSE connectors
on the NI 6555/6556.
For ease of use and safety, always operate connections to the AUX I/O connector on the NI 6556
with the backshell provided in the shipping kit. Additional backshell kits can be purchased from
NI (part number 762916-01). Operating the device without the provided backshell can expose
users to high voltage. The following image illustrates the NI 6556 and backshell connector.
Refer to the NI PXIe-6555/6556 Specifications for the working voltage levels of the AUX I/O
connector.

NI Digital Waveform Generator/Analyzer Getting Started Guide |© National Instruments |15
Figure 6. NI 6556 with Backshell
NI 656x Cabling
Use an SHB12X-B12X cable for connections to the NI 656xDDC connector. This cable is
designed for differential, high-speed digital signal transmission.
Using Accessories
You have different accessory options based on whether you are using a single-ended or
differential NI digital waveform generator/analyzer.
Note Whether you use NI cables and accessories or design your own, you should
properly terminate cables to avoid improper measurements due to signal reflections,
overshoot, and undershoot. Refer to the NI Digital Waveform Generator/Analyzer
Help for more information about signal termination.
Single-Ended Accessories
NI recommends using the NI CB-2162 single-ended digital I/O accessory to access the signals
on the 68-pin DDC connector and to terminate the DIO channels. The NI CB-2162 also provides
a platform for circuit prototyping and DUT testing. The NI CB-2162 is specifically designed for
use with single-ended NI digital waveform generator/analyzers (NI 654x/655x). For more
information about the NI CB-2162, refer to the NI CB-2162 User Guide.

16 |ni.com |NI Digital Waveform Generator/Analyzer Getting Started Guide
NI also offers the NI SMB-2163 breakout box for National Instruments single-ended digital
waveform generator/analyzers. The NI SMB-2163 offers coaxial SMB connectors for each
channel on the DDC connector, providing an easy way to connect to other devices for testing and
debugging. For more information about the NI SMB-2163, refer to the NI SMB-2163 User
Guide.
Figures 7 and 8 show how to connect a single-ended NI digital waveform generator/analyzer
and the NI CB-2162 and NI SMB-2163, respectively, using the NI SHC68-C68-D4 cable.
Figure 7. Connecting the NI CB-2162 Accessory
Figure 8. Connecting the NI SMB-2163 Accessory
1 PXI Chassis with NI Digital Waveform
Generator/Analyzer
2 NI SHC68-C68-D4 Cable
3 NI CB-2162 Accessory
1 PXI Chassis with NI Digital Waveform
Generator/Analyzer
2 NI SMB-2163 Accessory
3 NI SHC68-C68-D4 Cable
NI PXI-6551
50MHz Digital I/O
DIGITALDATA& CONTROL
PFI0
ACCESS ACTIVE
CLK
IN
CLK
OUT
NI PXI-1042
13
2
J15
J5
J6
NIPXI-6551
50MHz Digital I/O
DIGITALDATA& CONTROL
PFI0
ACCESS ACTIVE
CLK
IN
CLK
OUT
NI PXI-1042
2
3
1

NI Digital Waveform Generator/Analyzer Getting Started Guide |© National Instruments |17
The NI SHC68-H1X38 cable is a single-ended cable that breaks out each single-ended NI digital
waveform generator/analyzer signal into two 0.1 inch header receptacles, one receptacle each for
the signal and ground. The NI SHC68-H1X38 cable provides an easy way to connect
NI single-ended high-speed digital waveform generator/analyzer devices to various types of
devices and circuits for interfacing, testing, or analysis.
This cable offers connectivity similar to that found on a typical logic analyzer, so you can use it
in logic analyzer-type applications. Unlike a typical logic analyzer, however, this cable also
allows for simultaneous pattern generation and acquisition so that you can use it in
stimulus/response applications as well. The following figure shows the parts locator diagram for
the single-ended digital flying lead cable.
Figure 9. Single-Ended Flying Lead Cable Parts Locator Diagram
1 Lead Pairs 2 Removable Sleeving 3 68-Pin VHDCI Connector
1
2
3

18 |ni.com |NI Digital Waveform Generator/Analyzer Getting Started Guide
Differential Accessories
The NI SMA-2164 test fixture is a breakout box for National Instruments differential digital
waveform generator/analyzer modules (NI 656x). This fixture provides an easy way to connect
to other devices for testing and debugging. For more information about using the NI SMA-2164,
refer to the NI SMA-2164 User Guide.
Figure 10 shows how to connect a differential NI digital waveform generator/analyzer to the
NI SMA-2164, using the NI SHB12X-B12X cable.
Figure 10. Connecting the NI SMA-2164 Accessory
1 NI Digital Waveform Generator/Analyzer,
installed in a PXI chassis
2 NI SHB12-B12X Cable
3 NI SMA-2164
NI PXI-6551
50MHz Digital I/O
DIGITALDATA& CONTROL
PFI0
ACCESS ACTIVE
CLK
IN
CLK
OUT
NI PXI-1042
1
2
3
STROBE
CLK_ LVP E CL
+
+
IO_3
+
–
IO_7
IO_10
IO_14
IO_6
IO_11
IO_13
MADE I N U. S. A.
IO_15
ASSY192 533 A- 01
+ –
+
–
+
+
+
–
–
+
–
–
–
–
IO_12
–
–
+
+
–
+
IO_4
IO_5
IO_8
IO_2
IO_9
–
+
–
+
+
–
IO_1
+
–
–
+
+
PFI _3
CLK_ L VDS
+
PFI _2
+
–
+ –
PFI _1
VOS
VOS
VOS
VOS
VOS
VOS
VOS
VOS
VOS
VOS
VOS
IO_0
VOS
VOS
–
+
S/N
–
VOS
VOS
–
VOS
VOS
VOS
VOS
VOS
VOS
61 70
40 49 19 31 10
73
64 67
52 55
58
43 46 34 37 22 25 28 13 16
1
4 7
1
VOS
NI SMA-2164
DIFFERENTIAL
DIGITAL I/OACCESSORY
FORPATENTS: NI.COM/PATENTS
©COPYRIGHT2005

NI Digital Waveform Generator/Analyzer Getting Started Guide |© National Instruments |19
A flying lead cable, the NI SHB12X-H3X24, is also available for differential NI digital
waveform generator/analyzers (NI 656x). This cable offers connectivity similar to that found on
a typical logic analyzer, so you can use it in logic analyzer-type applications. The cable is shown
in Figure 11.
Figure 11. NI SHB12X-H3X24 Flying Lead Cable
Creating a Custom Accessory
Many common NI digital waveform generator/analyzer applications may require you to create
a custom accessory to easily access the signals of your device under test (DUT). If you are
creating a custom accessory to use with a device with a VHDCI DDC connector, you can
purchase the mating connector for the VHDCI cable from NI. If you are designing a custom
accessory to use with a device that uses an Infiniband connector, you can also purchase this
connector. For more information about creating these custom accessories, refer to the
Interfacing to the NI Digital Waveform Generator/Analyzer using the VHDCI Connector
application note, available by entering rdinwa in the text field at ni.com/info. Refer to
Appendix A: Device Front Panels for signal descriptions and pinout illustrations.
Note Whether you use NI cables and accessories or design your own, you should
properly terminate cables to avoid improper measurements due to signal reflections,
overshoot, and undershoot. Refer to the NI Digital Waveform Generator/Analyzer
Help for more information about signal termination.
1 Leads (1 ×3 Header Receptacle)
2 12 ×Infiniband Connector
3 Removeable Sleeving
1
23