National Instruments NI 5751 User manual

NI-5751/5751B
2022-07-11

Contents
NI 5751/5751B Getting Started Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electromagnetic Compatibility Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
FlexRIO Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Verifying the System Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Compatibility with FPGA Modules and Controllers for FlexRIO. . . . . . . . . . . . . . . . . . . . 6
Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Preparing the Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Confirming that Measurement & Automation Explorer (MAX) Recognizes the Device. .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Installing the NI 5751/5751B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Front Panel and Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pinout and Signal Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Clocking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Component-Level Intellectual Property (CLIP). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
NI 5751 CLIP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Where to Go Next. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Worldwide Support and Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
ni.com
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NI-5751/5751B

NI 5751/5751B Getting Started Guide
Note Before you begin, complete the soware and hardware installation
instructions in your FlexRIO FPGA getting started guide or controller for
FlexRIO getting started guide.
Caution Using the NI 5751/5751B in a manner not described in this
document may impair the protection the NI 5751/5751B provides.
The NI 5751/5751B is a 50 MS/s, 14-bit high-speed digitizer adapter module
designed to work in conjunction with FlexRIO FPGA modules and controllers for
FlexRIO. The NI 5751/5751B features 16 analog input channels and 8 bidirectional
digital I/O channels.
This document explains how to install and configure the NI 5751/5751B.
The NI 5751B variant is compatible with all FlexRIO FPGA modules and controllers
for FlexRIO. The NI 5751 variant is compatible with the NI PXI-795xR and
NI PXIe-796xR FPGA modules only.
Note NI 5751R refers to the combination of your NI 5751/5751B adapter
module and either a FlexRIO FPGA module or a controller for FlexRIO. NI
5751/5751B refers to your adapter module only.
Electromagnetic Compatibility Guidelines
This product was tested and complies with the regulatory requirements and limits
for electromagnetic compatibility (EMC) stated in the product specifications. These
requirements and limits are designed to provide reasonable protection against
harmful interference when the product is operated in the intended operational
electromagnetic environment.
This product is intended for use in industrial locations. However, harmful
interference may occur in some installations, when the product is connected to a
peripheral device or test object, or if the product is used in residential or
© National Instruments 3
NI-5751/5751B

commercial areas. To minimize interference with radio and television reception and
prevent unacceptable performance degradation, install and use this product in strict
accordance with the instructions in the product documentation.
Furthermore, any modifications to the product not expressly approved by National
Instruments could void your authority to operate it under your local regulatory
rules.
Caution To ensure the specified EMC performance, operate this product
only with shielded cables and accessories.
Caution To ensure the specified EMC performance, you must install PXI
EMC Filler Panels, National Instruments part number 778700-01, in all
open chassis slots. You can order a kit of six single slot EMC Filler Panels
directly from NI by visiting ni.com.
Caution To ensure the specified EMC performance, the length of all I/O
cables must be no longer than 30 m (100 ).
FlexRIO Documentation
Document Location Description
Getting started guide
for your FlexRIO FPGA
module or controller
for FlexRIO
Available from the Start menu and
at ni.com/manuals.
Contains installation instructions for
your FlexRIO system.
Specifications
document for your
FlexRIO FPGA module
or controller for
FlexRIO
Available from the Start menu and
at ni.com/manuals.
Contains specifications for your
FlexRIO FPGA module or controller for
FlexRIO.
Getting started guide
for your adapter
module
Available from the Start menu and
at ni.com/manuals.
Contains signal information,
examples, and CLIP details for your
adapter module.
ni.com
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NI-5751/5751B

Document Location Description
Specifications
document for your
adapter module
Available from the Start menu and
at ni.com/manuals.
Contains specifications for your
adapter module.
LabVIEW FPGA
Module Help
Embedded in LabVIEW Help and
at ni.com/manuals.
Contains information about the basic
functionality of the LabVIEW FPGA
Module.
Real-Time Module
Help
Embedded in LabVIEW Help and
at ni.com/manuals.
Contains information about real-time
programming concepts, step-by-step
instructions for using LabVIEW with
the Real-Time Module, reference
information about Real-Time Module
VIs and functions, and information
about LabVIEW features on real-time
operating systems.
FlexRIO Help Available from the Start menu and
at ni.com/manuals.
Contains information about the FPGA
module front panel connectors and
I/O, controller for FlexRIO front panel
connectors and I/O, programming
instructions, and adapter module
component-level IP (CLIP).
FlexRIO Adapter
Module Development
Kit User Manual
Available from the Start menu at
Start » All Programs » National
Instruments » NI FlexRIO » NI
FlexRIO Adapter Module
Development Kit »
Documentation.
Contains information about how to
create custom adapter modules for
use with FlexRIO FPGA modules.
LabVIEW Examples Available in NI Example Finder. In
LabVIEW, click Help » Find
Examples » Hardware Input and
Output » FlexRIO.
Contains examples of how to run
FPGA VIs and Host VIs on your device.
IPNet Located at ni.com/ipnet. Contains LabVIEW FPGA functions
and intellectual property to share.
FlexRIO product page Located at ni.com/flexrio. Contains product information and
data sheets for FlexRIO devices.
Table 1. FlexRIO Documentation Locations and Descriptions
© National Instruments 5
NI-5751/5751B

Verifying the System Requirements
To use the NI 5751/5751B, your system must meet certain requirements. For more
information about minimum system requirements, recommended system, and
supported application development environments (ADEs), refer to the readme,
which is available on the soware media or online at ni.com/updates.
Compatibility with FPGA Modules and Controllers for FlexRIO
The NI 5751B variant is compatible with all FlexRIO FPGA modules and controllers
for FlexRIO; however, the NI 5751 variant is only compatible with NI PXI-795xR and
NI PXIe-796xR modules. The following table lists each adapter module's
compatibility with FlexRIO FPGA modules and controllers for FlexRIO.
NI PXI-795xR NI PXIe-796xR NI PXIe-797xR NI-793xR
NI 5751 Yes Yes No No
NI 5751B Yes Yes Yes Yes
Table 2. Adapter Module Compatibility
Accessories
NI SMB-2147/2148 devices are shielded signal accessories for NI 5751/5751B adapter
modules. NI SMB-2147/2148 accessories provide easy connections to other devices
for testing and debugging. For more information about these accessories, refer to
the NI SMB-2145/2146/2147/2148 User Guide. The following figure shows a typical
setup of the NI 5751/5751B with the NI SMB-2147 and NI SMB-2148 signal
accessories.
Figure 1. NI 5751/5751B with NI SMB-2147 and NI SMB-2148 Signal Accessories
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NI-5751/5751B

NI PXI-1042
SMB-2147
Analog Input Accessory AI 3
AI 7
AI 2
AI 6 AI 5
AI 1 AI 0
AI 4
AI 11
AI 15 AI 14
AI 10
AI 13
AI 9
AI 12
AI 8
1
2
3
44
1. PXI Chassis with FlexRIO FPGA and adapter module
2. NI SMB-2147
3. NI SMB-2148
4. SHC68-C68-D4 Cable Assemblies
Unpacking
Caution To prevent ESD from damaging the devices, ground yourself
using a grounding strap or by holding a grounded object, such as your
computer chassis.
1. Touch the antistatic package to a metal part of the computer chassis.
2. Remove each module from the package and inspect it for loose components
or any other sign of damage.
© National Instruments 7
NI-5751/5751B

Caution Never touch the exposed pins of connectors.
Note Do not install a device if it appears damaged in any way.
3. Unpack any other items and documentation from the kit.
Store the devices in the antistatic package when they are not in use.
Preparing the Environment
Ensure that the environment you are using the NI 5751/5751B in meets the following
specifications.
Operating temperature (IEC 60068-2-1, IEC 60068-2-2) 0 °C to 55 °C
Operating humidity (IEC 60068-2-56) 10% to 90% RH, noncondensing
Pollution Degree 2
Maximum altitude 2,000 m at 25 °C ambient temperature
Indoor use only.
Note Refer to the NI 5751/5751B Specifications at ni.com/manuals for
complete specifications.
Caution Clean the hardware with a so, nonmetallic brush. Make sure
that the hardware is completely dry and free from contaminants before
returning it to service.
Confirming that Measurement & Automation Explorer (MAX)
Recognizes the Device
Use Measurement & Automation Explorer (MAX) to configure your NI hardware. MAX
informs other programs about which devices reside in the system and how they are
configured. MAX is automatically installed with FlexRIO Support.
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NI-5751/5751B

1. Launch MAX by navigating to Start » All Programs » National Instruments » NI
MAX or by clicking the NI MAX desktop icon.
2. In the Configuration pane, double-click Devices and Interfaces to see the list
of installed devices. Installed devices appear under the name of their
associated chassis.
3. (PXI and PXI Express devices only) Expand your Chassis tree item. MAX lists all
devices installed in the chassis. Your default device names may vary.
Note If you do not see your hardware listed, press <F5> to refresh
the list of installed devices. If the device is still not listed, power o
the system, ensure the device is correctly installed, and restart.
4. (Controllers for FlexRIO only) Your device appears under the Remote Devices
section.
Installing the NI 5751/5751B
Refer to the getting started guide for your FlexRIO FPGA module or Controller for
FlexRIO for instructions about how to install your FlexRIO system, including the
NI 5751/5751B.
Cables
NI recommends using the SHC68-C68-D4 cable (part number 196275A-01) with the
NI 5751/5751B. This cable connects directly to the analog and digital connectors on
the NI 5751/5751B.
Front Panel and Connector Pinouts
The following figure shows the front panel connectors for the NI 5751/5751B.
Device Front Panel Connector Description
DI 0-7/DO-07 Digital input terminals (DI
0-7) and digital output
terminals (DO 0-7)
© National Instruments 9
NI-5751/5751B

Device Front Panel Connector Description
NI 5751
AI 0-15
CLK
IN
DI 0-7
DO 0-7
CLK IN Sample Clock input
AI 0-15 Single-ended analog
input channels
Caution To avoid permanent damage to the NI 5751/5751B, disconnect
all signals connected to the NI 5751/5751B before powering down the
module, and connect signals only aer the adapter module has been
powered on by the FlexRIO FPGA module or controller for FlexRIO.
Caution Connections that exceed any of the maximum ratings of any
connector on the NI 5751/5751B can damage the device and the chassis. NI
is not liable for any damage resulting from such connections.
Pinout and Signal Information
The following figure shows the pinout for the VHDCI connector.
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NI-5751/5751B

Figure 2. NI 5751 Digital Connector Pinout
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
DO 1
GND
GND
GND
GND
GND
GND
DO 3
DO 5
DO 7
DI 1
DI 3
DI 5
DI 7
DO 0
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
DO 2
DO 4
DO 6
DI 0
DI 2
DI 4
DI 6
GND
GND
GND
GND
GND
GND
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
The following figure shows the pinout for the analog connector on the front panel of
the NI 5751/5751B.
© National Instruments 11
NI-5751/5751B

Figure 3. NI 5751 Analog Input CH 0 to CH 15
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
GND
AI 0
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
AI 2
GND
GND
AI 4
GND
AI 6
GND
AI 8
AI 10
GND
AI 12
AI 14
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
AI 1
AI 3
AI 5
AI 7
AI 9
AI 11
AI 13
AI 15
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
Clocking
The NI 5751/5751B clock source controls the sample rate and other timing functions
on the device. The following table contains information about the possible
NI 5751/5751B clock sources.
Clock Notes Frequency
Range
50 MHz
onboard
clock
— 30 MHz to
50 MHz
ni.com
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NI-5751/5751B

Clock Notes Frequency
Range
Sync Clock
(DStarA)
Sync Clock (DStarA) is only available on NI PXI Express FlexRIO
FPGA modules (such as the NI PXIe-796xR). DStarA is not available
on NI-793xR controllers for FlexRIO or NI PXI FlexRIO FPGA
modules (such as the NI PXI-795xR). On PXI Express modules,
Sync Clock is driven by the DStarA from the PXI/PXIe backplane.
If you change the frequency of Sync Clock (DStarA) or CLK IN
(when used as the Sample Clock), you must assert Force
Initialization.
CLK IN (front
panel SMB)
If you change the frequency of Sync Clock (DStarA) or CLK IN
(when used as the Sample Clock), you must assert Force
Initialization. For more information, refer to the FlexRIO Help.
Table 3. Sample Clock Sources
Related information
■http://www.ni.com/manuals/
Block Diagram
The following figure shows the NI 5751/5751B block diagram and signal flow.
© National Instruments 13
NI-5751/5751B

Figure 1. NI 5751 Hardware Block Diagram
I16
I16
I16
AI A0
AI A7
Analog
Connector
ADC
B
ADC
A
Deserializer
I16
AI B8
AI B15
Deserializer
AI 0
AI 7
AI 8
AI 15
DI 0
DI 7
DO 0
Sync Clock
(DStarA)
DO 7
External Clock In
Clock
Multiplexer
50 MHz Internal
Oscillator
Digital
Connector
Sample Clock Select
SPI Write
SPI Device Select
SPI Address
SPI Write Data
Force Initialization
Initialization Done
PLL Unlocked
ADC Error A
ADC Error B
SPI
Engine
NI 5751 Adapter Module LabVIEW FPGA CLIP
Data Clock
ADC
Control
Component-Level Intellectual Property (CLIP)
The LabVIEW FPGA Module includes component-level intellectual property (CLIP) for
HDL IP integration. FlexRIO devices support two types of CLIP: user-defined and
socketed.
■User-defined CLIP allows you to insert HDL IP into an FPGA target, enabling
VHDL code to communicate directly with an FPGA VI.
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NI-5751/5751B

■Socketed CLIP provides the same IP integration of the user-defined CLIP,
but it also allows the CLIP to communicate directly with circuitry external to
the FPGA. Adapter module socketed CLIP allows your IP to communicate
directly with both the FPGA VI and the external adapter module connector
interface.
The FlexRIO adapter module ships with socketed CLIP items that add module I/O to
the LabVIEW project.
NI 5751 CLIP
The NI 5751/5751B ships with the following CLIP items:
1. NI 5751 CLIP—The NI 5751 CLIP provides access to 16 analog input channels,
eight digital input lines, and eight digital output lines. This CLIP also contains
a SPI interface to program the ADC registers.
In the NI 5751 CLIP, each Sample Clock cycle generates a sample from the
analog input channels. Three clock sources are available and are selectable
using the Sample Clock Select control. The default clock source is the 50 MHz
onboard oscillator. Other clock sources available are DStarA through
IOModSyncClock and an external clock through the front panel SMB
connector. This CLIP only supports external Sample Clock rates from 30 MHz
to 50 MHz. Each 14-bit sample is output to LabVIEW as an I16 data type. The
14-bit data is le-justified and padded with two zeros in the LSBs. The data is
clocked out of the CLIP on the Data Clock signal.
2. NI 5751 Multidevice Synchronization CLIP—The NI 5751 Multidevice
Synchronization CLIP provides access to 16 analog input channels, eight
digital input lines, and eight digital output lines. This CLIP also contains a SPI
interface to program the ADC registers. Use this CLIP for applications that
require synchronization across multiple NI 5751 modules.
In the NI 5751 Multidevice Synchronization CLIP, each Sample Clock cycle
generates a sample from the analog input channels. DStarA is the only Sample
Clock that is routed. This CLIP only supports external Sample Clock rates from
30 MHz to 50 MHz. Each 14-bit sample is output to LabVIEW as an I16 data
type. The 14-bit data is le-justified and padded with two zeros in the LSBs.
DStarA is required to be routed to the CLIP from LabVIEW FPGA. The data is
clocked out of the CLIP on the Data Clock signal.
© National Instruments 15
NI-5751/5751B

Related information
■http://www.ni.com/manuals/
Where to Go Next
Refer to the following figure for information about other product tasks and
associated resources for those tasks.
custom applications within
an application programming
interface (API).
about hardware features
or review device
specifications.
more about your products through ni.com.
the application development
environment (ADE)
for your application.
*This item is also installed with the driver software.
Support
ni.com/support
FlexRIO
ni.com/flexrio
Services
ni.com/services
Located at ni.com/manualsLocated at ni.com/gettingstarted Available from the Start menu
FlexRIO Help*
Getting Started
with LabVIEW
LabVIEW FPGA
Module Help
NI 5751/5751B
Specifications*
FlexRIO Module
Development Kit
User Manual
DISCOVER
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The NI website 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.
Visit ni.com/services for NI Factory Installation Services, repairs, extended warranty,
and other services.
Visit ni.com/register to register your NI product. Product registration facilitates
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NI-5751/5751B

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 aords the user protection for electromagnetic 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.
NI corporate headquarters is located at 11500 North Mopac Expressway, Austin,
Texas, 78759-3504. NI also has oices located around the world. For telephone
support in the United States, create your service request at ni.com/support or dial
1 866 ASK MYNI (275 6964). For telephone support outside the United States, visit
the Worldwide Oices section of ni.com/niglobal to access the branch oice
websites, which provide up-to-date contact information, support phone numbers,
email addresses, and current events.
© National Instruments 17
NI-5751/5751B
© 2022 National Instruments Corporation.