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 Soware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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

ni.com

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 Soware Defined Radio (USRP-2900)

■USRP-2901 Soware 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 soware media or

online at ni.com/manuals, for more information about minimum system

requirements, recommended system, and supported application development

environments (ADEs).

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.

ni.com

USRP-2900/2901 Getting Started

Verifying the Kit Contents

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

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 Soware Media

7. USRP-2900/2901 Getting Started Guide (This Document)

Note The driver soware media installs the NI-USRP driver soware and

electronic documentation, including the NI-USRP Help, the NI-USRP

Readme, and device specifications. Aer 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.

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 Soware

You must be an Administrator to install NI soware on your computer.

ni.com

USRP-2900/2901 Getting Started

1. Install an ADE, such as LabVIEW or LabVIEW Communications System Design

Soware.

2. Visit ni.com/info and enter the Info Code usrpdriver to access the driver

download page for the latest NI-USRP soware.

3. Download the NI-USRP driver soware.

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 Soware 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.

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.

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 Aer 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.

ni.com

USRP-2900/2901 Getting Started

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