USRP-2945 Specifications
- Updated2025-05-29
- 10 minute(s) read
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-2945 Pinout
Use the pinout to connect to terminals on the USRP-2945.
Connector | Use | |
---|---|---|
JTAG | A USB port that connects the host computer to the device FPGA for recovery purposes. This port can be used with the Xilinx iMPACT configuration tool to temporarily load a new bitfile. | |
RF 0 | RX1 | Input terminal for the RF signal. RX1 is an SMA (f) connector with an impedance of 50 Ω and is a single-ended input 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 | RX1 | Input terminal for the RF signal. RX1 is an SMA (f) connector with an impedance of 50 Ω and is a single-ended input 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. |
LED | Description | Color | State | Indication | |
---|---|---|---|---|---|
RF 0 | RX1 | Indicates the receive status of the module. | OFF | — | The module is not receiving. |
Green | Solid | The module is receiving data. | |||
RX2 | Indicates the receive status of the module. | OFF | — | The module is not receiving. | |
Green | Solid | The module is receiving. | |||
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. | |||
LINK | Indicates the status of the link to a host computer. | OFF | — | There is no link to a host computer. | |
Green, yellow, or red | Solid | The host is actively communicating with the device. | |||
RF 1 | RX1 | Indicates the receive status of the module. | OFF | — | The module is not active. |
Green | Solid | The module is receiving data. | |||
RX2 | Indicates the receive status of the module. | OFF | — | The module is not receiving. | |
Green | Solid | The module is receiving. |
Connector | Use |
---|---|
PWR | Input that accepts a 9 V to 16 V, 6 A external DC power connector. |
1G/10G ETH | Two SFP+ input terminals used for 1G ETH or 10G ETH connectivity with the host driver. Not currently supported in LabVIEW FPGA. |
LO OUT 1 IF2 | Output terminal for the IF LO signal exported by RF 1. LO OUT 1 IF2 is a female SMA connector with an impedance of 50 Ω. |
LO OUT 1 IF1 | Output terminal for the RF LO signal exported by RF 1. LO OUT 1 IF1 is a female SMA connector with an impedance of 50 Ω. |
REF OUT | Output terminal for an external reference signal for the LO on the device. ΩREF OUT is a female SMA 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 a female SMA 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 Vpk-pk) and a maximum input power of 15 dBm (3.56 Vpk-pk) for a square wave or sine wave. |
LO IN 0 IF2 | Terminal for an external signal to the IF LO input on the RF 0 daughterboard. This signal can be used as the LO source for an RF 0 channel by selecting external on that channel's LO source setting. LO IN 0 IF2 is a female SMA connector with an impedance of 50 Ω. |
LO IN 0 IF1 | Terminal for an external signal to the IF LO input on the RF 0 daughterboard. This signal can be used as the LO source for an RF 0 channel by selecting external on that channel's LO source setting. LO IN 0 IF1 is a female SMA connector with an impedance of 50 Ω. |
PCIe x4 | Port for a PCI Express Generation 1, x4 bus connection through an MXI Express four-lane cable. |
LO IN 1 IF2 | Terminal for an external signal to the IF LO input on the RF 0 daughterboard. This signal can be used as the LO source for an RF 0 channel by selecting external on that channel's LO source setting. LO IN 1 IF2 is a female SMA connector with an impedance of 50 Ω. |
LO IN 1 IF1 | Terminal for an external signal to the IF LO input on the RF 0 daughterboard. This signal can be used as the LO source for an RF 0 channel by selecting external on that channel's LO source setting. LO IN 1 IF1 is a female SMA connector with an impedance of 50 Ω. |
PPS TRIG OUT | Output terminal for the pulse per second (PPS) timing reference. PPS TRIG OUT is a female SMA connector with an impedance of 50 Ω, and it is a single-ended input. The output signal is 0 V to 3.3 V TTL. You can also use this port as triggered output (TRIG OUT) that you program with the PPS Trig Out I/O signal. |
PPS TRIG IN | Input terminal for pulse per second (PPS) timing reference. PPS TRIG IN is a female SMA connector with an impedance of 50 Ω, and it 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. |
GPS ANT |
Input terminal for the GPS antenna signal.
GPS ANT is a female SMA connector with a maximum input power of -15 dBm and an output of DC 5 V to power an active antenna.
Notice Do not terminate the GPS ANT port if you do not use it.
|
Receiver
Number of channels | 4 | ||||||
Frequency range | 10 MHz to 6 GHz | ||||||
Frequency step | <1 kHz | ||||||
Gain range[1]1 The received signal amplitude resulting from the gain setting varies over the frequency band and among devices. | 0 dB to 95 dB | ||||||
Gain step | 1 dB | ||||||
Maximum input power (Pin) | +10 dBm | ||||||
Frequency accuracy[2]2 Frequency accuracy is based on temperature-compensated crystal oscillator (TCXO) vendor specifications and is not measured. Alternatively, you can incorporate an external reference source to provide a more precise frequency Reference Clock and to achieve better frequency accuracy. | 2.5 ppm | ||||||
Maximum instantaneous real-time bandwidth[3]3 Each USRP-2945 receiver path has 80 MHz of bandwidth throughout the full frequency range of the device. | 80 MHz | ||||||
Maximum I/Q sample rate | 100 MS/s | ||||||
|
LO Input/Export Connectors
IF2 | |
Minimum RF power level | 0 dBm |
Nominal RF power level | +3 dBm |
IF1 | |
Minimum RF power level | -12 dBm |
Nominal RF power level | +5 dBm |
IF2 | |
Minimum RF power level | 0 dBm |
Nominal RF power level | +2 dBm |
Maximum RF power level | +20 dBm |
IF1 | |
Minimum RF power level | -10 dBm |
Nominal RF power level | -5 dBm |
Maximum RF power level | +10 dBm |
IF2 | |
Minimum RF power level | 0 dBm |
Nominal RF power level | +2 dBm |
Maximum RF power level | +20 dBm |
IF1 | |
Minimum RF power level | -10 dBm |
Nominal RF power level | -5 dBm |
Maximum RF power level | +10 dBm |
Power Requirements
Input voltage | 9 V to 16 V, DC |
Input current | 7.5 A, maximum |
Typical power consumption | 38 W to 44 W, varies by application |
Onboard DRAM
Memory size | 1,024 MB |
Physical Characteristics
|
Environment
Operating temperature range | 23 °C ± 5 °C, room temperature |
Maximum altitude | 2,000 m (800 mbar) (at 25 °C ambient temperature) |
Pollution Degree | 2 |
Indoor use only.
Operating Environment
Operating temperature | 23 °C ± 5 °C, room temperature |
Relative humidity range | 10% to 90%, noncondensing (tested in accordance with IEC 60068-2-56) |
Compliance and Certifications
Safety Compliance Standards
This product is designed to meet the requirements of the following electrical equipment safety standards for measurement, control, and laboratory use:
- IEC 61010-1, EN 61010-1
- UL 61010-1, CSA C22.2 No. 61010-1
Electromagnetic Compatibility
- EN 61326-1 (IEC 61326-1): Class A emissions; Basic immunity
- EN 55011 (CISPR 11): Group 1, Class A emissions
- EN 55022 (CISPR 22): Class A emissions
- EN 55024 (CISPR 24): Immunity
- AS/NZS CISPR 11: Group 1, Class A emissions
- AS/NZS CISPR 22: Class A emissions
- FCC 47 CFR Part 15B: Class A emissions
- ICES-001: Class A emissions
CE Compliance

This product meets the essential requirements of applicable European Directives, as follows:
- 2014/35/EU; Low-Voltage Directive (safety)
- 2014/30/EU; Electromagnetic Compatibility Directive (EMC)
- 2011/65/EU; Restriction of Hazardous Substances (RoHS)
- 2014/53/EU; Radio Equipment Directive (RED)
- 2014/34/EU; Potentially Explosive Atmospheres (ATEX)
Product Certifications and Declarations
Refer to the product Declaration of Conformity (DoC) for additional regulatory compliance information. To obtain product certifications and the DoC for NI products, visit ni.com/product-certifications, search by model number, and click the appropriate link.
Environmental Management
NI is committed to designing and manufacturing products in an environmentally responsible manner. NI recognizes that eliminating certain hazardous substances from our products is beneficial to the environment and to NI customers.
For additional environmental information, refer to the Engineering a Healthy Planet web page at ni.com/environment. This page contains the environmental regulations and directives with which NI complies, as well as other environmental information not included in this document.
EU and UK Customers
电子信息产品污染控制管理办法(中国RoHS)
1 The received signal amplitude resulting from the gain setting varies over the frequency band and among devices.
2 Frequency accuracy is based on temperature-compensated crystal oscillator (TCXO) vendor specifications and is not measured. Alternatively, you can incorporate an external reference source to provide a more precise frequency Reference Clock and to achieve better frequency accuracy.
3 Each USRP-2945 receiver path has 80 MHz of bandwidth throughout the full frequency range of the device.
4 Noise figure values are based on 0 dB RF attenuation and maximum gain settings.