background image

Table 6. LED Indicators (Continued)

LED

Description

Color

Indication

 

 

 

 

E

Indicates the reference lock status of
the LO on the device.

Off

There is no reference signal, or the
LO is not locked to a reference
signal.

Blinking The LO is not locked to a reference

signal.

Green

The LO is locked to a reference
signal.

F

Indicates the powers status of the
device.

Off

The device is powered off.

Green

The device is powered on.

USRP-2921 Front Panel and LEDs

MIMO EXPANSION

GB ETHERNET

POWER

RX 1 
TX 1

REF IN

PPS IN

A
C
E

B
D
F

NI USRP-2921

2.4 - 2.5 GHz, 4.9 - 5.85 GHz

RX 2
TX 2

6 V      3 A

Table 7. Connector Descriptions

Connector

Description

 

 

RX 1

TX 1

Input and output terminal for the RF signal. RX 1 TX 1 is an SMA (f)
connector with an impedance of 50 Ω and is a single-ended input or
output channel.

RX 2

Input terminal for the RF signal. RX 2 is an SMA (f) connector with an
impedance of 50 Ω and is a single-ended input channel.

REF IN

Input terminal for an external reference signal for the local oscillator
(LO) on the device. REF IN is an SMA (f) connector with an
impedance of 50 Ω and is a single-ended reference input. REF IN
accepts a 10 MHz signal with a minimum input power of 0 dBm
(.632 Vpk-pk) and a maximum input power of 15 dBm (3.56 Vpk-pk)
for a square wave or sine wave.

USRP-2920/2921/2922 Getting Started Guide

  | 

© National Instruments

  | 

17

Summary of Contents for USRP-2920

Page 1: ...Kit Contents 3 Environmental Guidelines 4 Environmental Characteristics 4 Installing the Software 4 Installing the Software Using NI Package Manager 4 Installing the Software Using the Driver Download...

Page 2: ...ge 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 cha...

Page 3: ...d Item s In addition to the kit contents you must provide a computer with available gigabit Ethernet interface Optional Items LabVIEW Modulation Toolkit MT available for download at ni com downloads a...

Page 4: ...t you installed Installing the Software Using NI Package Manager Ensure that you have installed the latest version of NI Package Manager To access the download page for NI Package Manager go to ni com...

Page 5: ...t computer using a standard gigabit Ethernet interface Refer to the documentation for your gigabit Ethernet interface for installation and configuration instructions 1 Power on the computer 2 Attach t...

Page 6: ...92 168 10 2 1 Ensure the host computer uses a static IP address You may need to modify the network settings for the local area connection using the Control Panel on the host computer Specify the stati...

Page 7: ...evice in the New IP Address textbox 6 Click the Change IP Address button or press Enter to change the IP address The IP address of the selected device displays in the Selected IP Address textbox 7 The...

Page 8: ...e gigabit Ethernet interfaces assign each Ethernet interface a separate subnet and assign the corresponding device an address in that subnet as shown in the following table Table 2 Multiple Host Ether...

Page 9: ...255 255 255 0 192 168 10 3 Programming the Device You can use the NI USRP instrument driver to create communications applications for the USRP device NI USRP Instrument Driver The NI USRP instrument...

Page 10: ...and Output NI USRP From the Learning tab select Examples Hardware Input and Output NI USRP RIO Lessons NI USRP includes lessons that guide you through the process of identifying and demodulating an FM...

Page 11: ...aveforms Troubleshooting If an issue persists after you complete a troubleshooting procedure contact NI technical support or visit ni com support Device Troubleshooting Why Doesn t the Device Power On...

Page 12: ...mputer If your device still does not appear in the list you can manually add the device to the list Click the Manually Add Device button enter the IP address of the device in the dialog box that displ...

Page 13: ...e the following steps to ping the device and receive a response 1 To ping the device open a Windows command prompt and enter ping 192 168 10 2 where 192 168 10 2 is the IP address for your USRP device...

Page 14: ...e NI recommends that you use a dedicated network with no other USRP devices connected to the host computer to avoid the possibility of an IP address conflict Also verify that the static IP address of...

Page 15: ...d devices such as a nonisolated RF antenna ensure the devices are maintained in a static free environment If you are using an active device such as a preamplifier or switch routed to the USRP device T...

Page 16: ...two USRP devices using a compatible MIMO cable GB ETHERNET The gigabit Ethernet port accepts an RJ 45 connector and gigabit Ethernet compatible cable Category 5 Category 5e or Category 6 POWER The po...

Page 17: ...2 6 V 3 A Table 7 Connector Descriptions Connector Description RX 1 TX 1 Input and output terminal for the RF signal RX 1 TX 1 is an SMA f connector with an impedance of 50 and is a single ended input...

Page 18: ...on Color Indication A Indicates the transmit status of the device Off The device is not transmitting data Green The device is transmitting data B Indicates the status of the physical MIMO cable link O...

Page 19: ...r with an impedance of 50 and is a single ended input channel REF IN Input terminal for an external reference signal for the local oscillator LO on the device REF IN is an SMA f connector with an impe...

Page 20: ...evices are not connected using the MIMO cable Green The devices are connected using the MIMO cable C Indicates the receive status of the device Off The device is not receiving data Green The device is...

Page 21: ...urce 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 Engine...

Page 22: ...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 h...

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