National Instruments USB-7856 Manual de usuario
USB-7856
Getting Started
2023-05-10
Contents
Getting Started. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electromagnetic Compatibility Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Unpacking the Kit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Verifying the Kit Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installing Soware on the Host Computer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Installing the Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Connecting the USB Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Powering the Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Verifying Hardware Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connecting Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Where to Go Next. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Where to Go for Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ni.com
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USB-7856 Getting Started
Getting Started
This document describes how to begin using the NI USB-7856R.
© 2013National Instruments Corporation. All rights reserved. Refer to the <National
Instruments>\_Legal Information directory for information about NI copyright,
patents, trademarks, warranties, product warnings, and export compliance.
Safety Guidelines
Caution Do not operate the NI USB-7856R in a manner not specified in
this user manual. Product misuse can result in a hazard. You can
compromise the safety protection built into the product if the product is
damaged in any way. If the product is damaged, return it to National
Instruments for repair.
Electromagnetic Compatibility Guidelines
This product was tested and complies with the regulatory requirements and limits
for electromagnetic compatibility (EMC) as stated in the product specifications.
These requirements and limits are designed to provide reasonable protection
against harmful interference when the product is operated in its intended
operational electromagnetic environment.
This product is intended for use in residential, commercial, and industrial locations.
However, harmful interference may occur in some installations or when the product
is connected to a peripheral device or a test object. 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 National Instruments could void your authority to operate it under your local
regulatory rules.
© National Instruments 3
USB-7856 Getting Started
Caution To ensure the specified EMC performance, you must install the
included snap-on ferrite bead onto the DC power cord of the power supply
as described in this document.
Notice To ensure the specified EMC performance, operate this product
only with shielded cables and accessories.
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 the following components are in your kit.
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4
USB-7856 Getting Started
Figure 1. Kit Contents for the NI USB-7856R
3
6
2
5
1
4
1. NI USB-7856R Module
2. USB Cable
3. Ferrite Bead
4. NI-RIO Media
5. Power Supply
6. Getting Started Guide
Installing Soware on the Host Computer
Before using the NI USB-7856R, you must install the following application soware
and device drivers on the host computer.
1. Install the driver soware using either the media included in your kit or by
downloading the latest version from ni.com/downloads.
2. Follow the instructions in the installation prompts.
1. Windows users may see access and security messages during
installation. Accept the prompts to complete the installation.
3. When the installer completes, a dialog box asks if you want to restart, shut
down, or restart later. Select Restart.
Installing the Hardware
© National Instruments 5
USB-7856 Getting Started
Connecting the USB Cable
USB modules can be connected directly to the host PC, to a powered USB hub, or to
an NI PXI or PXI Express chassis featuring a USB port.
1. Connect the USB cable to the NI USB-7856R using the cable device port.
2. Connect the other end of the USB cable to the host PC, powered hub, or
chassis.
3. Use the jackscrew on the locking USB cable to securely attach the cable to the
NI USB-7856R.
Powering the Module
Caution To ensure the specified EMC performance, install the included
snap-on ferrite bead onto the DC power cord of the power supply in
accordance with the instructions provided.
1. Install the ferrite bead by opening the housing and looping the power supply
once through the center of the bead. Ensure the ferrite bead is as close to the
end of the cable as practical.
2. Close the ferrite bead until the locking tabs engage securely.
Figure 2. Installing the Ferrite Bead
x1
2
1
9-30 V
C V
20 W MAX
1. Power Supply
2. Ferrite
3. Connect the power supply to the NI USB-7856R.
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6
USB-7856 Getting Started
4. Connect the other end of the power supply to a user-supplied power cord.
5. Connect the user-supplied power cord to the appropriate power source.
6. Turn the power switch on the NI USB-7856R to the on position.
USB Device Security Cable Slot
The security cable slot allows you to attach an optional laptop lock to your NI
USB-7856R.
Note The security cable is designed to act as a deterrent, but might not
prevent the device from being mishandled or stolen. For more
information, refer to the documentation that accompanied the security
cable.
Note The security cable slot on the USB device might not be compatible
with all laptop lock cables.
Refer to the documentation that accompanied the security cable for installation
instructions.
Verifying Hardware Installation
You can verify that the system recognizes the USB device 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 aer refreshing the view, visit ni.com/support for
troubleshooting information.
Connecting Signals
The following figure shows the I/O connector pin assignments and locations for the
NI USB-7856R.
© National Instruments 7
USB-7856 Getting Started
Caution To ensure the specified EMC performance, operate this product
only with shielded cables and accessories.
Note NI is not liable for connections that exceed any of the maximum
ratings of input or output signals on the NI USB-7856R and on the
computer chassis. For the maximum input and output ratings for each
signal, refer to the NI USB-7856R Specifications, available at ni.com/
manuals.
Figure 3. NI USB-7856R Connector Pin Assignments and Locations
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
GND
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 0
(DIO)
CONNECTOR 1
(MIO)
TERMINAL 34
TERMINAL 68
TERMINAL 1
TERMINAL 35
TERMINAL 34
TERMINAL 68
TERMINAL 1
TERMINAL 35
Where to Go Next
Refer to the following figure for information about other product tasks and
associated resources for those tasks.
ni.com
8
USB-7856 Getting Started
Where to Go for Support
© National Instruments 9
USB-7856 Getting Started
© 2023 National Instruments Corporation.
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