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National Instruments PCIe-7856 Manual
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GETTING STARTED GUIDE
NI PCIe-7856
R Series Digital I/O Module for PCI Express, 8 AI, 8 AO, 48 DIO,
1 MS/s AI, Kintex-7 160T FPGA
This document describes how to begin using the PCIe-7856.
Safety Guidelines
Caution Observe all instructions and cautions in the user documentation. Using
the model in a manner not specified can damage the model and compromise the
built-in safety protection. Return damaged models to NI for repair.
EMC 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 provide reasonable protection against harmful interference when the product is
operated in the intended operational electromagnetic environment.
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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 changes or modifications to the product not expressly approved by NI could
void your authority to operate it under your local regulatory rules.
Notice Operate this product only with shielded cables and accessories.
Notice The length of all I/O cables must be no longer than 3 m (10 ft).
Preparing the Environment
Ensure that the environment in which you are using the NI PCIe-7856 meets the following
specifications.
Note Refer to the device specifications on ni.com/manuals for complete
specifications.
Storage Environment
Temperature
Operating
1
0 °C to 55 °C
Storage -20 °C to 70 °C
Humidity
Operating 10% RH to 90% RH, noncondensing
Storage 5% RH to 95% RH, noncondensing
Pollution Degree 2
Maximum altitude 2,000 m (at 25 °C ambient temperature)
1
For PCI Express adapter cards without integrated air movers, NI defines the local operational
ambient environment to be 25 mm (1 in.) upstream of the leading edge of the card with system
airflow of at least 0.4 m/s (80 LFM) for half length cards and 0.6 m/s (120 LFM) for three-quarter
length cards. For more information about the local operational ambient environment definition for
PCI Express adapter cards, visit ni.com/info and enter the Info Code pcielocalambient.
2 | ni.com | NI PCIe-7856 Getting Started Guide
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Unpacking the Kit
Notice To prevent electrostatic discharge (ESD) from damaging the device, 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 the device from the package and inspect the device for loose components or any
other sign of damage.
Notice 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 device in the antistatic package when the device is not in use.
Verifying the Kit Contents
Verify that the following items are included in the PCIe-7856 kit.
Figure 1. PCIe-7856 Kit Contents
3
2
1
1. Hardware
2. NI-RIO Media
3. Getting Started Guide
Installing Software on the Host Computer
Before using the PCIe-7856, you must install the following application software and device
drivers on the host computer.
1. LabVIEW 2018 SP1 or later
2. LabVIEW FPGA Module 2018 or later
3. NI R Series Multifunction RIO Device Drivers January 2019 or later
NI PCIe-7856 Getting Started Guide | © National Instruments | 3
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Visit ni.com/info and enter the Info Code softwareversion for minimum software support
information.
Installing the PCIe-7856
1. Power off and unplug the computer.
2. Access the computer system expansion slots. This step might require you to remove one
or more access panels on the computer case.
3. Locate a compatible slot and remove the corresponding slot cover on the computer back
panel.
4. Touch any metal part of the computer to discharge any static electricity.
5. Insert the PCIe-7856 into the applicable PCI Express system slot. Gently rock the
PCIe-7856 into place. Do not force the device into place.
You cannot install PCI Express devices in PCI slots. PCI Express devices support upplugging into a PCI Express slot of higher lane width. For more information, refer to
ni.com/pciexpress.
Figure 2. Installing a PCI Express Device
1
3
2
1. PCI Express Device
2. PCI Express System Slot
3. PC with PCI Express Slot
6. Secure the module mounting bracket to the computer back panel rail.
7. Replace any access panels on the computer case.
8. Plug in and power on your computer.
9. If applicable, install accessories and/or terminal blocks as described in the installation
guides.
10. Attach sensors and signal lines to the device, terminal block, or accessory terminals.
4 | ni.com | NI PCIe-7856 Getting Started Guide
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Verifying Hardware Installation
You can verify that the system recognizes the PCIe-7856 by using Measurement &
Automation Explorer (MAX).
1. Launch MAX by navigating to Start»All Programs»National Instruments»MAX or by
clicking the MAX desktop icon.
2. Expand Devices and Interfaces.
3. Verify that the device appears under Devices and Interfaces.
If the device does not appear, press <F5> to refresh the view in MAX. If the device does
not appear after refreshing the view, visit ni.com/support for troubleshooting information.
Pinout
DIO30
GND
DIO28
GND
DIO26
GND
DIO24
GND
DIO22
GND
DIO20
GND
DIO18
GND
DIO16
GND
DIO14
GND
DIO12
GND
DIO10
GND
DIO8
GND
DIO6
GND
DIO4
GND
DIO2
GND
DIO0
GND
EXTCLKIN
GND
DIO31
DIO29
GND
GND
DIO25
GND
DIO23
GND
DIO27
GND
DIO21
GND
DIO19
GND
DIO17
GND
DIO15
GND
DIO13
GND
DIO11
GND
DIO9
GND
DIO7
GND
DIO5
GND
DIO3
GND
DIO1
GND
GND
GND
68 34
67 33
66 32
65 31
64 30
63 29
62 28
61 27
60 26
59 25
58 24
57 23
56 22
55 21
54 20
53 19
52 18
51 17
50 16
49 15
48 14
47 13
46 12
45 11
44 10
43 9
42 8
41 7
40 6
39 5
38 4
37 3
36 2
35 1
+5V
DIO0
DIO1
DIO2
DIO3
DIO4
DIO5
DIO6
DIO7
DIO9
DIO11
DIO13
DIO15
AO7
AO6
AO5
AO4
AO3
AO2
AO1
AO0
AISENSE
AI7+
AIGND6
AI6+
AI5+
AIGND4
AI4+
AI3+
AIGND2
AI2+
AI1+
AIGND0
AI0+
+5V
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DIO8
DIO10
DIO12
DIO14
AOGND7
AOGND6
AOGND5
AOGND4
AOGND3
AOGND2
AOGND1
AOGND0
NC
AI7–
AIGND7
AI6–
AI5–
AIGND5
AI4–
AI3–
AIGND3
AI2–
AI1–
AIGND1
AI0–
68 34
67 33
66 32
65 31
64 30
63 29
62 28
61 27
60 26
59 25
58 24
57 23
56 22
55 21
54 20
53 19
52 18
51 17
50 16
49 15
48 14
47 13
46 12
45 11
44 10
43 9
42 8
41 7
40 6
39 5
38 4
37 3
36 2
35 1
CONNECTOR 1
(DIO)
CONNECTOR 0
(MIO)
TERMINAL 34
TERMINAL 68
TERMINAL 1
TERMINAL 35
TERMINAL 34
TERMINAL 68
TERMINAL 1
TERMINAL 35
NI PCIe-7856 Getting Started Guide | © National Instruments | 5
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Table 1. PCIe-7856 Signal Descriptions
Signal Description
AI+ Positive analog input signal connection
AI- Negative analog input signal connection
AISENSE Reference connection for NRSE measurements
AIGND Ground reference for the analog input signal
AO Analog output signal connection
AOGND Ground reference for the analog output signal
DIO Digital input/output signal connection
DGND Ground reference for the digital signal
EXTCLKIN External clock input source that can be used for source synchronous
acquisitions. The provided clock source must be stable and glitch-free.
GND Ground connection
Supply (+5 V
out
) 5 V power output connection for external devices
NC No connection
The PCIe-7856 is protected from overvoltage and overcurrent conditions.
Note Refer to the device specifications, available at ni.com/manuals for more
information.
6 | ni.com | NI PCIe-7856 Getting Started Guide
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Where to Go Next
SUPPORT
Services
ni.com/services
NI Community
ni.com/community
Software Support
ni.com/info>swsupport
Support
ni.com/support
SOFTWAREHARDWARE
Configuring a Project
NI-RIO Help
Learn LabVIEW Basics
ni.com/gettingstarted
NI R Series Examples
NI Example Finder
NI PCIe-7856 Specifications
ni.com/manuals
NI PCIe-7856 User Manual
ni.com/manuals
Worldwide Support and Services
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 information about the services NI offers.
Visit ni.com/register to register your NI product. Product registration facilitates technical
support and ensures that you receive important information updates from NI.
NI corporate headquarters is located at 11500 North Mopac Expressway, Austin, Texas,
78759-3504. NI also has offices located around the world. For support in the United States,
create your service request at ni.com/support or dial 1 866 ASK MYNI (275 6964). For
support outside the United States, visit the Worldwide Offices section of ni.com/niglobal to
access the branch office websites, which provide up-to-date contact information.
NI PCIe-7856 Getting Started Guide | © National Instruments | 7
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Information is subject to change without notice. Refer to the NI Trademarks and Logo Guidelines at ni.com/trademarks for
information on NI trademarks. Other product and company names mentioned herein are trademarks or trade names of their
respective companies. For patents covering NI products/technology, refer to the appropriate location: Help»Patents in your
software, the patents.txt file on your media, or the National Instruments Patent Notice at ni.com/patents. You can find
information about end-user license agreements (EULAs) and third-party legal notices in the readme file for your NI product. Refer
to the Export Compliance Information at ni.com/legal/export-compliance for the NI global trade compliance policy and how
to obtain relevant HTS codes, ECCNs, and other import/export data. NI MAKES NO EXPRESS OR IMPLIED WARRANTIES AS
TO THE ACCURACY OF THE INFORMATION CONTAINED HEREIN AND SHALL NOT BE LIABLE FOR ANY ERRORS. U.S.
Government Customers: The data contained in this manual was developed at private expense and is subject to the applicable
limited rights and restricted data rights as set forth in FAR 52.227-14, DFAR 252.227-7014, and DFAR 252.227-7015.
© 2018 National Instruments. All rights reserved.
378051B-01 December 23, 2018
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