USRP-2974 Specifications
- Updated2025-02-24
- 8 minute(s) read
USRP-2974 Specifications
Definitions
Warranted specifications describe the performance of a model under stated operating conditions and are covered by the model warranty.
Characteristics describe values that are relevant to the use of the model under stated operating conditions but are not covered by the model warranty.
- Typical specifications describe the performance met by a majority of models.
- Nominal specifications describe an attribute that is based on design, conformance testing, or supplemental testing.
Specifications are Characteristics unless otherwise noted.
Conditions
Specifications are valid at 25 °C unless otherwise noted.
USRP-2974 Pinout
Use the pinout to connect to terminals on the USRP-2974.
Connector | Use | |
---|---|---|
RF 0 | TX1 RX1 | Input and output terminal for the RF signal. TX1 RX1 is an SMA (f) connector with an impedance of 50 Ω and is a single-ended input or output channel. |
RX2 | Input terminal for the RF signal. RX2 is an SMA (f) connector with an impedance of 50 Ω and is a single-ended input channel. | |
AUX I/O | General-purpose I/O (GPIO) port. AUX I/O is controlled by the FPGA. | |
RF 1 | TX1 RX1 | Input and output terminal for the RF signal. TX1 RX1 is an SMA (f) connector with an impedance of 50 Ω and is a single-ended input or output channel. |
RX2 | Input terminal for the RF signal. RX2 is an SMA (f) connector with an impedance of 50 Ω and is a single-ended input channel. | |
DP | DisplayPort connector to connect one monitor for your controller. | |
USB2.0 | USB ports that support common USB peripheral devices such as flash drives, hard drives, keyboards, and mice. | |
USB3.0 | USB ports that support common USB peripheral devices such as flash drives, hard drives, keyboards, and mice. | |
1G ETH | RJ45 port used for 1G ETH connectivity to other ethernet devices. | |
μUSB | USB port used for UART connectivity to the controller. | |
1G/10G ETH 0 | SFP+ port used for 10G ETH connectivity to other ethernet devices. Connects to the embedded Linux computer for communication with LabVIEW RT. | |
1G/10G ETH 1 | SFP+ port used for 1G/10G ETH connectivity to other ethernet devices. Connects to the FPGA. Not currently supported in LabVIEW Communications System Design Suite. |
LED | Description | Color | State | Indication | |
---|---|---|---|---|---|
REF | Indicates the status of the reference signal. | OFF | — | There is no reference signal, or the device is not locked to the reference signal. | |
Green | Blinking | The device is not locked to the reference signal. | |||
Solid | The device is locked to the reference signal. | ||||
PPS | Indicates the pulse per second (PPS). | OFF | — | There is no PPS timing reference signal, or the device is not locked to the reference signal. | |
Green | Blinking | The device is locked to the PPS timing reference signal. | |||
GPS | Indicates whether the GPSDO is locked. | OFF | — | There is no GPSDO or the GPSDO is not locked. | |
Green | Solid | The GPSDO is locked. | |||
STATUS | Indicates the status of the device. | OFF | — | The device initialized successfully and is ready for use. | |
Red | Blinking | Hardware error. An internal power supply has failed. Check front-panel I/O connections for shorts. Remove any shorts and cycle power to the USRP-2974. Contact NI if the problem persists. | |||
PWR | Indicates the power status of the device. | OFF | — | The device is powered off. | |
Green | Solid | The device is powered on. | |||
10/100/1000 | Indicates the speed of the Gigabit Ethernet link. | OFF | — | No link, or 10 Mbps link. | |
Green | Solid | 100 Mbps link. | |||
Amber | Solid | 1,000 Mbps link. | |||
ACT/LINK | Indicates the Gigabit Ethernet link activity or status. | OFF | — | No link has been established. | |
Green | Solid | A link has been negotiated. | |||
Blinking | Activity on the link. | ||||
1G/10G ETH 0 | ACT/LINK | Indicates the status of the SFP+ port. | OFF | — | The link is down. |
Green | Solid | The link is up. | |||
Blinking | The link is active (transmitting and receiving). | ||||
10GbE | Indicates the status of the 10G ETH link. | OFF | — | The 10G ETH link is down. | |
Green | Solid | The 10G ETH link is up. | |||
1G/10G ETH 1 10GbE | Indicates the status of the 10G ETH link. | OFF | — | The 10G ETH link is down. | |
Green | Solid | The 10G ETH link is up. |
Connector | Use |
---|---|
REF OUT | Output terminal for an external reference signal for the LO on the device. REF OUT is an SMA (f) connector with an impedance of 50 Ω, and it is a single-ended reference output. The output signal at this connector is 10 MHz at 3.3 V. |
REF IN | Input terminal for an external reference signal for the LO on the device. REF IN is an SMA (f) connector with an impedance of 50 Ω, and it is a single-ended reference input. REF IN accepts a 10 MHz signal with a minimum input power of 0 dBm (0.632 V pk-pk) and a maximum input power of 15 dBm (3.56 V pk-pk) for a square wave or sine wave. |
PPS TRIG OUT | Output terminal for the PPS timing reference. PPS TRIG OUT is an SMA (f) connector with an impedance of 50 Ω and is a single-ended input. The output signal is 0 V to 3.3 V TTL. You can also use this port as a triggered output (TRIG OUT) that you program with the PPS Trig Out I/O signal. |
PPS TRIG IN | Input terminal for PPS timing reference. PPS TRIG IN is an SMA (f) connector with an impedance of 50 Ω and is a single-ended input channel. PPS TRIG IN accepts 0 V to 3.3 V TTL and 0 V to 5 V TTL signals. You can also use this port as a triggered input (TRIG IN) that you control using NI-USRP software. |
GPS ANT | Input terminal for the GPS antenna signal. GPS ANT is an SMA (f) connector with a maximum input power of -15 dBm and an output of 5 V DC to power an active antenna.
Notice Do not terminate the GPS ANT port if you do not use it.
|
PCIe x4 | Port for a PCI Express Generation 2, x4 bus connection through an MXI Express four-lane cable. Can be used to connect an external USRP device or external chassis. |
SYSTEM POWER IN | Input that accepts a 15 V ± 5%, 10 A external DC power connector. |
Controller
System on module (SoM) | Congatec COM Express conga-TS170 |
CPU | Intel Core i7 6822EQ (2 GHz Quad Core) |
Memory[1]1 Module assembly A has a memory of 8 GB. All other module assemblies have a memory of 16 GB. | SO-DIMM DDR4 16 GB |
NVMe SSD[2]2 Module assembly A has an NVMe SSD of 250 GB. All other module assemblies have an NVMe SSD of 500 GB. | 500 GB |
SFP+[3]3 Can be bypassed to the FPGA. | 10G ETH connection to the SoM |
Cabled PCIe | PCIe Gen 2 x 4 |
MicroUSB[4]4 Device port for external host. | USB-to-UART to the SoM |
RJ45 | 1G ETH host connection |
FPGA and Baseband
FPGA | Kintex-7 XC7K410T |
DRAM | 1 GB |
Baseband analog-to-digital converter (ADC) resolution | 14 bit |
Baseband digital-to-analog converter (DAC) resolution | 16 bit |
Maximum I/Q sample rate | 200 MS/s |
SFP+[5]5 Can be bypassed to the SoM if using the 10 GbE as protocol. | High speed serial link to one of the FPGA GTX transceivers |
RF
Transmitter
Number of channels | 2 |
Frequency range | 10 MHz to 6 GHz |
Frequency step | <1 kHz |
Maximum output power (Pout), 10 MHz to 4 GHz | 50 mW to 100 mW (17 dBm to 20 dBm) |
Maximum output power (Pout), 4 GHz to 6 GHz | 5 mW to 50 mW (7 dBm to 17 dBm) |
Gain range[6]6 The output power resulting from the gain setting varies over the frequency band and among devices. | 0 dB to 31.5 dB |
Gain step | 0.5 dB |
Maximum instantaneous real-time bandwidth[7]7 The USRP-2974 transmitter path has 160 MHz of bandwidth throughout the full frequency range of the device. | 160 MHz |
Receiver
Number of channels | 2 |
Frequency range | 10 MHz to 6 GHz |
Frequency step | <1 kHz |
Gain range[8]8 The received signal amplitude resulting from the gain setting varies over the frequency band and among devices. | 0 dB to 37.5 dB |
Gain step | 0.5 dB |
Maximum input power (Pin) | -15 dBm |
Noise figure | 5 dB to 7 dB |
Maximum instantaneous real-time bandwidth[9]9 The USRP-2974 receiver path has 84 MHz of bandwidth for center frequencies from 10 MHz to 500 MHz. | 160 MHz |
GPS Disciplined Oscillator (GPSDO)
OCXO (not locked to GPS) | 25 ppb |
OCXO (locked to GPS) | 5 ppb |
Voltage | 5 V |
Power | 0.7 W |
Power
Voltage range | 14.25 V to 15.75 V |
Current | 10 A, maximum |
Power | 150 W, maximum |
Physical Characteristics
If you need to clean the module, wipe it with a dry towel.
(L × W × H) | 29.08 cm × 21.84 cm × 7.98 cm (11.45 in. × 8.60 in. × 3.14 in.) |
Weight | 3.34 kg (7.35 lb) |
Environment
Maximum altitude | 2,000 m (800 mbar) (at 25 °C ambient temperature) |
Pollution Degree | 2 |
Indoor use only.
Operating Environment
Operating temperature | 0 °C to 50 °C |
Relative humidity range | 10% to 90%, noncondensing |
1 Module assembly A has a memory of 8 GB. All other module assemblies have a memory of 16 GB.
2 Module assembly A has an NVMe SSD of 250 GB. All other module assemblies have an NVMe SSD of 500 GB.
3 Can be bypassed to the FPGA.
4 Device port for external host.
5 Can be bypassed to the SoM if using the 10 GbE as protocol.
6 The output power resulting from the gain setting varies over the frequency band and among devices.
7 The USRP-2974 transmitter path has 160 MHz of bandwidth throughout the full frequency range of the device.
8 The received signal amplitude resulting from the gain setting varies over the frequency band and among devices.
9 The USRP-2974 receiver path has 84 MHz of bandwidth for center frequencies from 10 MHz to 500 MHz.