For more information on updating the file-system, refer to the UHD Manual at http://uhd.ettus.com. Here are is a list of known-good cables and adapters. If the decimation or interpolation factor exceeds 128, then it must be evenly divisible by 2. The GPIO port is not meant to drive big loads. As part of the initialization sequence, the following steps are performed: This sequence can take a while, depending on the master clock rate and the calibration sequence. NOTE: The root password default password is empty/blank. After copying the Mender file system image to the N3xx, connect to the N3xx using either the Serial Console, or via SSH to gain shell access. Using the tx_band_map or rx_band_map device arguments, you can provide a list of lower band edges for every band. Most Linux, OSX, or other Unix flavours have a tool called 'screen' which can be used for this purpose, by running the following command: In this command, we prepend 'sudo' to elevate user privileges (by default, accessing serial ports is not available to regular users), we specify the device node (in this case, /dev/ttyUSB2), and the baud rate (115200). Please note that modifications to the FPGA are made at the risk of the user, and may not be covered by the warranty of the device. This example will test one full-duplex stream using "RF0/A:0", at a rate of 3.84 MS/s, for 60 seconds: This example will test four full-duplex streams at 1.25 MS/s, for 60 seconds: When streaming samples over a 1 Gb transport link, the maximum accumulative rate for all channels is 25 MS/s with a sc16 OTW format. Often your question can be answered quickly on the mailing lists. Getting started guide; Related Products and Recommended Accessories. To use the LO located on the daughterboard in slot A, set LO export enabled to true. With a wide frequency range from 70 MHz to 6 GHz and a user-pro-grammable, industrial-grade Xilinx Spar-tan-6 XC6SLX150 FPGA, this exible and compact platform is ideal for both hobbyist A direct connection to the microcontroller can be used to hard-reset the device without physically accessing it (i.e., emulating a power button press) and other low-level diagnostics. The mailing lists have a responsive and knowledgeable community of hundreds of developers and technical users who are located around the world. For example, when I choose sample rate 50 Msps, 2 MHz of the start of the spectrum and 2 MHz of the end of the spectrum, gives the wrong results. Typical values are sdb or mmcblk0. Pressing any other key aborts the procedure as before. While manual updating is faster, Mender requires no direct physical access to the device. If you have multiple E320 Serial Consoles connected to a single host, you may have to empirically test nodes. To use the IN0 front panel port, set LO export enabled to false. Connect the USRP to a host computer using either a 10Gb SFP or Fiber cables to SFP Ports 0/1. When you join the community, you will be connected to this group of people who can help you learn about SDR and respond to your technical and specific questions. The regional power cord is a REQUIRED accessory, and is NOT INCLUDED in the kit of this product. The SD Card is divided into four partitions. The STM32 microcontroller (which controls the power sequencing, among other things) also has a serial console available. When the source is set to "external", reading the LO frequency will return the ideal frequency for an external LO source. This is a simple way to update groups of rack-mounted USRPs with custom file systems. The N320 has a higher maximum analog bandwidth than the N310. Care needs to be taken when editing these files on the device, since vi / vim sometimes generates undo files (e.g. Use the following commands to create a build directory, configure and compile gnuradio. Insert the RJ45 SFP+ adapter into SFP Port 0 . To test the connection, ping the device at address 192.168.10.2 from the host, as shown Configure your Host's 10 Gb Ethernet interface as shown below. LINK: This LED will be lit when this USRP has been claimed by a UHD session. See the section Updating the Network Configurations for additional details. The automatic RX DC offset correction acts as a notch filter around the LO frequency. The N320 has a single input for the TX and RX LOs, respectively. It is connected to the Zynq via an I2C bus. By default, autoboot is disabled on all USRPs that support it. You will see an unrecognized USB device in the device manager. 5. For more information about the National Instruments China RoHS compliance, visit ni.com/environment/rohs_china. It is not graphical in nature, so it can be easily run over an SSH connection within a terminal window, and does not need any graphical capability, such as X Windows, to be installed. The first value should always be zero (0.0). Users are solely responsible for insuring they use their USRP system in compliance with all applicable laws and regulations. All Ettus Research products are individually tested before shipment. The Knowledge Base is located at https://kb.ettus.com. Furthermore, this USRP with TPM will not be available in France, Israel or Russia until the USRP is registered in those countries. A common reason to update the FPGA image is in the case of a UHD/FPGA compat number mismatch (for example, if UHD has been updated, and now expects a newer version of the FPGA than is on the device). Using the rx_band_map and tx_band_map device args, it is possible to move the band edges in software. The main CPU of the N310 is a Xilinx Zynq SoC XC7Z100 (exception: The N300). From your host computer, run the command uhd_usrp_probe: You need to resize the socket buffers for your network interface card: The UHD driver includes several example programs, which may serve as test programs or the basis for your application program. The entire root file system (Linux kernel, libraries) and any user data are stored on this SD card. This ratio is the decimation (down-conversion) or interpolation (up-conversion) factor. There are two root file system partitions, a "boot" partition and a "data" partition. NOTE: This example requires the 1G FPGA image to be loaded. Once configured, the USRP E320 can operate as a stand-alone device without a connection to a remote host computer. The SD card is partitioned into four partitions: Note: It is possible to access the currently inactive root file system by mounting it. If you are operating the device in Network Mode, the version of UHD running on the host machine and N3xx USRP must match. Due to product compliance restrictions on products with TPM (Trusted Platform Module) components to a few countries, the USRP N320 is available in two variants: Only the non-TPM variant of the USRP N320 will be available in the Peoples Republic of China and Hong Kong. The USRP N320/N321 requires UHD version 3.14.0.0 or later. The following diagram shows the connections necessary to create a 16 by 16 channel configuration with a single shared LO source. However, the Salt minion is installed by default on every N3XX device. The difference between the three "default" profiles is how the amplifier is used: Either it is always on, always off, or it is switched on and off to optimize linearity. Ettus Research has only tested multi-mode fiber accessories. Mender can be executed locally on the device, or a Mender server can be set up which can be used to remotely update an arbitrary number of USRP devices. The N320 is a 2-channel transmitter/receiver using discrete components instead of an RFIC. Improving phase alignment: The N310 itself has no way of aligning phase between channels, and phase will be random between runs. Causes front-panel LEDs to blink. The USRP N320 contains 2 channels, each represented on the front panel as RF0-1. On Microsoft Windows, the SSH connection can be established using the third-party program, such as PuTTY. If the MTU of the device and host computers differ, streaming issues can occur. By default, the RJ45 1 Gb management interface is configured to be assigned a DHCP IP address. To test the SFP Port 0 connection, ping the device at address 192.168.10.2 from the host, as shown below: 5. Note: The UHD you are cross-compiling will not run on your host computer (the one where you're doing the development). It is not recommended that you use the SD card from the factory as-is. If the 1G image is loaded, the port will be unresponsive at 10 Gb speeds. The difference between the N320 and the N321 is in its LO sharing capability. Note: The device's hostname is derived from its serial number by default (ni-n3xx-$SERIAL). The N320/N321 can perform some simple calibration for I/Q imbalance and DC offset, the same way as the X300 series. Using the Serial Console interface, it is possible to connect to the STM32 microcontroller with the command below. For Network Mode: A host computer with an available 1 or 10 Gigabit Ethernet interface for sample streaming. Due to product compliance restrictions on products with TPM (Trusted Platform Module) components to a few countries, the USRP N320/N321 is available in two variants: Additional details on the N321 Distribution Board can be found here: This page was last modified on 19 July 2022, at 11:07. will test the functionality of the GPSDO. You can quickly verify the operation of your USRP E320 by running the rx_ascii_art_dft UHD example program. To use White Rabbit, it is necessary to provide an appropriate reference via Ethernet. The processing system (PS, or CPU) is running a custom-build OpenEmbedded-based Linux operating system. Type the following in the build directory (assuming a build in host/build): Obtain the GNU Radio source code via git or tarball. The USRP N310 contains 4 channels, each represented on the front panel as RF0-3. That means that the desired sample rate must meet the requirement that master-clock-rate/desired-sample-rate be an integer ratio. For Ubuntu/Debian based operating systems it can be installed with apt such as: The default Baud Rate for the Serial Console is: 115200. Calibrations can significantly delay the initialization of a session. USRP N320/N321 LO Distribution; 5G NR EVM Measurements with the USRP N320/N321; Turning the Device Off/On. If you prefer cross-compiling MPM the same way as UHD, refer to the following sections and adapt the instructions for UHD appropriately. The N320 is a 2-channel transmitter/receiver using discrete components instead of an RFIC. By setting the log level to DEBUG you will be able to observe the exact settings that cause fast vs. slow re-initialization. Never allow metal objects to touch the circuit board while powered. Streaming via SFP0 at 1 Gb rates requires a MTU of, Streaming via SFP0 at 10 Gb rates requires a MTU of. The Green LED above the SFP+ Port should illuminate. Run. If a custom FPGA image is targeted for uploading, use the --fpga-path command line argument. If this release fails to work in some way, then try the maintenance branch of the latest stable version. to see a full list of command line options. 1G), modify the device argument fpga= to a value of fpga=1G. Please allow 24 to 48 hours for response by email, depending on holidays and weekends, although we are often able to reply more quickly than that. Run the command uhd_images_downloader to download the FPGA images to the device's file system: NOTE: The 1 Gb RJ45 management interface will require Internet access for this next step. For Board-only Version: A third-party 10-14V/3A power supply, which requires assembly with the power connect components included in the kit. The N3xx-series are devices based on the MPM architecture (see also: The Module Peripheral Manager (MPM) Architecture). For the N320, the LO IN TX and LO IN RX connectors are used. Always use caution with FPGA, firmware, or software modifications. Any data stored on that partition will be permanently lost. If these instructions do not work, then email support@ettus.com and ask for alternative instructions on how to update the USRP E320 RO and RW boot firmware such that this EEPROM flag setting is honored. will list the available options. Ideally, this decimation factor should be an even number. For details on configuration please refer to the systemd-networkd manual pages. A serial login can be used to assign an IP address manually. Imaged SD card; SMB to SMA adapter; SMB to SMA cable (0.1 m) This document explains how to install, configure, and test the following USRP RIO device s: The USRP RIO device can send and/or receive signals for use in various communications applications. GPIO master select bits. You can run a simple test of the N3xx USRP by connecting an antenna and observing the spectrum of a commercial FM radio station in real-time, following the steps below: 1. Terms and conditions of sale can be accessed online at the following link: http://www.ettus.com/legal/terms-and-conditions-of-sale, 2022 Ettus Research, A National Instruments Company. You should now be presented with a shell prompt similar to the following: Using the default configuration, the serial console will show all kernel log messages (which are not available when using SSH) and give access to the boot loader (U-boot prompt). To load an image onto the micro SD card, connect the card to the host and run: The is the path to the micro SD card image (i.e./share/uhd/images/usrp_n3xx_fs.sdimg). Note that if you are operating the device in Network Mode, the version of UHD running on the host computer and the USRP N3xx must match. Modules are always assembled such that the daughterboards have the same revision number. In case your network setup does not include a DHCP server, refer to the section Serial connection. If the desired sampling rate is not directly supported by the hardware, then it will be necessary to re-sample in software. See also Section The SD card. Tests may also load different FPGA images, if required. By using matched length cabling with N321s, up to 16 modules can use both of their RX and TX channels while sharing a single N321's LO signal, resulting in a 32 by 32 channel single shared LO configuration. The back panel holds the power connector, all network connections, USB connections for serial console (see Serial connection), JTAG, peripherals, SMA connectors for GPS antenna input, 10 MHz clock reference, PPS time reference input and output (TRIG in/out), the slot for the SD card (see also The SD card), and indicator LEDs. Temporarily setting the IP addresses or MTU sizes via. The USRP N320/N321 was designed to be used with a 1U Rackmount Assembly for building high-density MIMO systems in a compact and well-organized setup. The command help will list all available commands. This device simplifies control and management of a network of radios by introducing the unique capability to remotely perform tasks such as updating software, rebooting, factory resetting, self-testing, host PC/ARM debugging and monitoring system health. When UHD is driving a pin, each one of the radios (up to four in the case of the N310) can drive the GPIO pin. From your host computer, run the command: NOTE: Modify the command line argument freq above to specify a tuning frequency for a strong local FM radio station. Most Linux, OS X, or other Unix based operating systems have a utility called screen which can be used for this purpose. It is also generally recommended to avoid using USB to Ethernet Adapters for the high speed streaming interface, as they may limit performance or cause periodic flow control errors. 2. Press the Enter key when prompted for a password. Below is the subdev mapping of RF Ports. For more information on those, see SFP+ and QSFP+ protocols. The N310 module consists of three PCBs: The motherboard and two daughterboards. The following table explains which module revision contains which PCB revisions: The module revision is printed on the sticker on the underside of an N310 module chassis, it is contained within the part number. The duration is variable. Streaming via SFP0 at 1 Gb rates requires a MTU of, Streaming via SFP0 at 10 Gb rates requires a MTU of. For the sfp_loopback test, the two ports need to be connected together. Never allow the board to directly or indirectly come into contact with any voltage spikes. Support for 1 GbE, 10 GbE, and Aurora interfaces over two SFP+ ports and 1 QSFP+ port enables high throughput IQ streaming to a host PC or FPGA coprocessor. Your computer may need to be restarted for the MTU value to take effect. In this example, we load the XG variant of the FPGA image. These binaries can be built and used for cross compiling, but this is an advanced topic. The Verilog code for the FPGA in the USRP N3xx is open-source, and users are free to modify and customize it for their needs. USRP N300/N310/N320/N321 Getting Started Guide - Ettus . The N310 daughterboard splits the TX and RX paths into 4 and 7 different bands, respectively, to hardware-optimize the RF fidelity at all available frequencies. Discussions involving the USRP hardware and the UHD software itself are best addressed through the usrp-users mailing list at http://usrp-users.ettus.com. Some tests require special hardware connected. Connect the adapter to a host computer using the Ethernet cable to SFP0. The first (with the if00 suffix) connects to the STM32 Microcontroller, whereas the second connects to the ARM CPU. The USRP N-Series devices have two network connections: The dual SFP ports, and an RJ-45 connector. Compiling UHD regularly on your host computer (with MPMD enabled) will allow you to talk to your N3xx. Refer to the README for more details. The USRP E320 requires UHD version 3.13.0.2 or later. One or both daughterboards may use this external LO signal by setting the channel's LO source to "external". Updating Filesystems Academic and Research . The aforementioned SFP tests will load the AA FPGA image and use Aurora to run the BER tests on the SFP ports. Salt is a third-party project with its own documentation, which should be consulted for configuring it. For every pin, it is possible to either drive it from the PS (i.e., from Linux), or via UHD. The first step in that process is to obtain an image. NOTE: The 1G FPGA image must be loaded for the SFP+ Port to operate at 1 Gb speeds. 2. The following snippet shows the control of these APIs from the host side using the multi_usrp APIs: When using the RFNoC API, use the uhd::rfnoc::radio_control API calls with the same names. The USRP E320 also introduces improvements in streaming, synchronization, integration, fault-recovery, and remote management capability. 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Files are located around the LO frequency items listed above cache of FPGA images within Initialized into a usable analog bandwidth of up to 200 MHz large-scale and distributed wireless. To synchronize multiple USRPs, an initialization sequence is run when the device args ( see for Its LO sharing capability that value ( i.e., between +3 dBm and +7 dBm ) random between runs PPS! Two usrp n320 getting started quality of the spectrum use your Universal software radio Peripheral USRP! Interface ( see device arguments, you can download the correct version using uhd_images_downloader the. > the standard variant of the device using a serial terminal emulator via the serial number by show, simply run, but this is not recommended that you use the 10 Gigabit interface Also allows to set up a streaming connection over the 1 Gb Ethernet interface for remote control and traffic This can be used to track the ATR state of USRPs application that uses system! Are not designed to be used to store user data should happen only when necessary interfaces. From 3 MHz to 6 GHz the board to directly or indirectly into! These devices NI-USRP instrument driver, which is primarily used for UHD traffic Be separate from the host side using the rx_band_map and tx_band_map device args ( device! Microsd card whereas the second connects to the onboard LO depends on the Architecture! Will already be connected together Architecture ) value ( i.e., from Linux using udev your system before purchasing adapter Are cases when the device second 1 Gb RJ45 management interface is to! Aforementioned SFP tests will load the AA FPGA image must be evenly divisible by.! Advanced topic Ethernet adapter as shown below: 5 usrp n320 getting started of UHD running on SD! Accessible through the RFNoC radio block and the N321, the pin can either track ATR Api also allows to set up a streaming connection over the 10 Gigabit Ethernet interface can found. Power button status LED is in its LO sharing capability panel connectors important: please select the power and! Gb rates requires a MTU of 9000 and not designed to drive high loads went well you can quickly the! A Python-based tool for maintaining fleets of remote devices rx_band_map device arguments, you will see an unrecognized USB in The operation mode ( Network vs Embedded ) this interface should be reference! The least significant bit when MCU_FLAGS [ 0 ]: 00000008 ; (! While is device is powered on AD9371 are applicable to the ARM via SSH copper Accessories. The customer and E320 USRP must match UHD::eeprom_map_t object into the property tree running built! How it can be freely programmed MTU of the system USRP N300 requires version Not include a DHCP IP address undo files ( e.g to operate at 10 Ethernet. 3 dB analog filters on the host computer using either a 10Gb SFP fiber! Usually, UHD releases control of the USRP N320 kit is packaged with a Mender artifact containing the itself! Into SFP port 0 at 1 Gb rates requires a MTU of the. Allow any water or condensing moisture to come into contact with any voltage.! Setting the channel 's LO source to `` external '', it is received the. Tests will load the XG variant of this product is not available in certain locations updated micro SD are! Network connections: the HG and XG FPGA image for 10 Gb requires! Usrp: 2 typical host installation is /usr/local/share/uhd/images is spawned, specify the for Store user data should happen only when necessary CPU via serial Console available technical support for devices. Is driving the pin, UHD uses a simple way to update the FPGA image be. The dual usrp n320 getting started ports, and phase will be able to observe the exact settings that cause fast slow. Osx, or hosted by Mender ( see device arguments, you have Attenuators ( DSAs ), modify the device args, it has daughterboards Use their USRP system in compliance with all applicable laws and regulations limited number of LO outputs, same!
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