National Instruments NI 5751 User manual

GETTING STARTED GUIDE
NI 5751/5751B
50 MS/s Digitizer Adapter Module
Note Before you begin, complete the software 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 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 ft).
FlexRIO Documentation
Table 1. FlexRIO Documentation Locations and Descriptions
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.
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.
2| ni.com | NI 5751/5751B Getting Started Guide

Table 1. FlexRIO Documentation Locations and Descriptions (Continued)
Document Location Description
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.
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 software
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 5751/5751B Getting Started Guide | © National Instruments | 3

NI PXIe-796xR modules. The following table lists each adapter module's compatibility with
FlexRIO FPGA modules and controllers for FlexRIO.
Table 2. Adapter Module Compatibility
NI PXI-795xR NI PXIe-796xR NI PXIe-797xR NI-793xR
NI 5751 Yes Yes No No
NI 5751B Yes Yes Yes Yes
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.
4| ni.com | NI 5751/5751B Getting Started Guide

Figure 1. NI 5751/5751B with NI SMB-2147 and NI SMB-2148 Signal Accessories
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.
Caution Never touch the exposed pins of connectors.
Note Do not install a device if it appears damaged in any way.
NI 5751/5751B Getting Started Guide | © National Instruments | 5

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 soft, 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.
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 off the system, ensure
the device is correctly installed, and restart.
4. (Controllers for FlexRIO only) Your device appears under the Remote Devices section.
6| ni.com | NI 5751/5751B Getting Started Guide

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
NI 5751
AI 0-15
CLK
IN
DI 0-7
DO 0-7
DI 0-7/DO-07 Digital input terminals (DI 0-7) and digital output
terminals (DO 0-7)
CLK IN Sample Clock input
AI 0-15 Single-ended analog input channels
NI 5751/5751B Getting Started Guide | © National Instruments | 7

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 after 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.
8| ni.com | NI 5751/5751B Getting Started Guide

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.
NI 5751/5751B Getting Started Guide | © National Instruments | 9

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.
10 | ni.com | NI 5751/5751B Getting Started Guide

Table 3. Sample Clock Sources
Clock Notes Frequency
Range
50 MHz
onboard clock
— 30 MHz to
50 MHz
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.
Related Information
For more information about clock sources, refer to the FlexRIO Help.
Block Diagram
The following figure shows the NI 5751/5751B block diagram and signal flow.
NI 5751/5751B Getting Started Guide | © National Instruments | 11

Figure 4. 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
12 | ni.com | NI 5751/5751B Getting Started Guide

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.
•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 left-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 left-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.
Related Information
Refer to the FlexRIO Help for more information about FlexRIO CLIP items, how to configure
the NI 5751/5751B with a socketed CLIP, and for a list of available socketed CLIP signals
NI 5751/5751B Getting Started Guide | © National Instruments | 13

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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14 | ni.com | NI 5751/5751B Getting Started Guide

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NI 5751/5751B Getting Started Guide | © National Instruments | 15

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