ettus USRP-2900 Manual de usuario
USRP-2900/2901
Getting Started
2022-07-11
Contents
NI USRP-2900/2901 Getting Started Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electromagnetic Compatibility Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Verifying the System Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Unpacking the Kit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Verifying the Kit Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Preparing the Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Installing the Soware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Installing USRP-2900/2901 Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Configuring USRP-2900/2901 Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Confirming USB Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Changing the Device ID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Programming the USRP-2900/2901. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
NI-USRP Instrument Driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
NI-USRP Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Verifying the Device Connection (Optional). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Why Doesn't the USRP Device Appear in MAX?. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Why Doesn't the USRP Device Appear in the NI-USRP Configuration Utility?. . 12
Front Panels and Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Direct Connections to the USRP-2900/2901. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
USRP-2900 Connectors and LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
USRP-2901 Connectors and LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Worldwide Support and Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
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USRP-2900/2901 Getting Started
NI USRP-2900/2901 Getting Started Guide
This document explains how to install, configure, and test the following USRP
devices:
■USRP-2900 Soware Defined Radio (USRP-2900)
■USRP-2901 Soware Defined Radio (USRP-2901)
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 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 changes or modifications to the product not expressly approved
by National Instruments could void your authority to operate it under your local
regulatory rules.
Verifying the System Requirements
To use the NI-USRP instrument driver, your system must meet certain requirements.
Refer to the product readme, which is available on the driver soware media or
online at ni.com/manuals, for more information about minimum system
requirements, recommended system, and supported application development
environments (ADEs).
© National Instruments 3
USRP-2900/2901 Getting Started
Unpacking the Kit
Caution 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.
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 device in the antistatic package when the device is not in use.
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USRP-2900/2901 Getting Started
Verifying the Kit Contents
6
54
31 2
TX OUTPUT MAX +20 dBm, RX INPUT MAX -15 dBm, ALL RF PORTS 50 Ω
RF 0
TX1 RX1 RX2 TX1 RX1
RX2
RF 1
NI USRP-2901
70 MHz–6 GHz
Designed by Ettus Research
1. USRP-2900/2901 Device
2. AC/DC Power Supply (Included Only in USRP-2901 Kits)
3. USB 3.0 Cable
4. SMA (m)-to-SMA (m) Cable
5. 30 dB SMA Attenuator
6. Driver Soware Media
7. USRP-2900/2901 Getting Started Guide (This Document)
Note The driver soware media installs the NI-USRP driver soware and
electronic documentation, including the NI-USRP Help, the NI-USRP
Readme, and device specifications. Aer installation, you can access
USRP-2900/2901 documentation at Start > All Programs > National
Instruments > NI-USRP > Documentation.
Other Required Items
In addition to the kit contents, you must provide the following additional items:
■ Computer with available USB 3.0 or USB 2.0 interface.
© National Instruments 5
USRP-2900/2901 Getting Started
Caution This product is not approved or licensed for transmission over
the air using an antenna. As a result, operating this product with an
antenna may violate local laws. Ensure that you are in compliance with all
local laws before operating this product with an antenna.
Optional Items
■Additional SMA (m)-to-SMA (m) cables to connect both channels with
external devices or to use the REF IN and PPS IN signals
■6 V, 3 A external DC power connector
Preparing the Environment
Ensure that the environment you are using the USRP-2900/2901 in meets the
following specifications.
Ambient temperature range 0 °C to 55 °C
Operating temperature 23 °C ± 5 °C
Operating humidity 10% to 90% relative humidity, noncondensing
Pollution Degree 2
Maximum altitude 2,000 m
Indoor use only.
Caution Do not operate the USRP-2900/2901 in a manner not specified in
this document. 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 NI for repair.
Installing the Soware
You must be an Administrator to install NI soware on your computer.
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USRP-2900/2901 Getting Started
1. Install an ADE, such as LabVIEW or LabVIEW Communications System Design
Soware.
2. Visit ni.com/info and enter the Info Code usrpdriver to access the driver
download page for the latest NI-USRP soware.
3. Download the NI-USRP driver soware.
4. Follow the instructions in the installation prompts.
Note Windows users may see access and security messages during
installation. Accept the prompts to complete the installation.
5. When the installer completes, select Restart in the dialog box that prompts
you to restart, shut down, or restart later.
Installing USRP-2900/2901 Devices
Install LabVIEW Communications System Design Soware and NI-USRP before you
install the hardware.
Note The USRP-2900/2901 device connects to a host computer using a
standard USB connector and USB cable.
1. Power on the computer.
2. Attach the antenna or cable to the front panel terminals of the
USRP-2900/2901 device as needed for your application.
3. Use the USB cable to connect the USRP device to the computer.
Note You can connect the USRP device to either a USB 3.0 or a USB
2.0 port. If you use a USB 2.0 port, the maximum achievable sample
rate may be reduced to 8 MS/s or less.
Note NI recommends that you connect the device to an external
power supply when you use USB 2.0.
© National Instruments 7
USRP-2900/2901 Getting Started
4. (Optional) Connect the AC/DC power supply to the PWR connector on the back
panel of the USRP device, and plug the power supply into a wall outlet.
Note NI recommends that you connect the device to an external
power supply if you plan to use both channels of the USRP device.
However, if you plan to use only one channel, bus power may be
acceptable.
You can connect and synchronize multiple USRP-2900/2901 devices using an
external Reference Clock distribution system such as the CDA-2990 Clock
Distribution Device. However, USB performance varies when multiple devices
stream through the same controller. Consider using a USRP RIO device if you need
to build a high-channel count system.
Confirming USB Connection
1. Select Start > All Programs > National Instruments > NI-USRP > NI-USRP
Configuration Utility to open the NI-USRP Configuration Utility.
2. Select the Devices tab of the utility.
Your device should appear in the list on the le side of the tab, similar to the
following figure.
Figure 1. Confirming USB Connection
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USRP-2900/2901 Getting Started
Note If your device is not listed, verify that your device is powered
on and correctly connected, then click the Refresh Devices List
button to scan for USRP devices.
Changing the Device ID
To change the USRP-2900/2901 device ID, you must know the current address of the
device.
1. Verify that your device is powered on and connected to your computer using
the USB 3.0 or 2.0 interface.
2. Select Start > All Programs > National Instruments > NI-USRP > NI-USRP
Configuration Utility to open the NI-USRP Configuration Utility.
3. Select the Devices tab of the utility.
Your device should appear in the list on the le side of the tab.
4. In the list, select the device for which you want to change the device ID.
If you have multiple devices, verify that you selected the correct device.
The device ID of the selected device displays in the Selected Device ID
textbox.
5. Enter the device ID for the device in the New Device ID textbox.
Note The device ID cannot contain spaces or special characters.
The utility should appear similar to the following figure.
© National Instruments 9
USRP-2900/2901 Getting Started
Figure 2. Changing the Device ID
6. Click the Change Device ID button or press <Enter> to change the device ID.
7. The utility prompts you to confirm your selection. Click OK if your selection is
correct; otherwise, click Cancel.
8. The utility displays a confirmation to indicate the process is complete. Click
OK.
9. Power cycle the device to apply the changes.
Note Aer you change the device ID, you must power cycle the
device and click Find Devices in the utility to update the list of
devices.
Configuring Multiple Devices with USB
You can connect multiple devices in the following ways:
■ Multiple USB 2.0 or 3.0 interfaces—One device for each interface
■ Single USB 2.0 or 3.0 interface—Multiple devices connected to a USB 2.0 or
3.0 hub
Tip Sharing a single USB 2.0 or 3.0 controller interface on your host
computer among multiple devices may reduce overall signal throughput.
For maximum signal throughput, NI recommends that you connect no
more than one device per USB interface.
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USRP-2900/2901 Getting Started
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