USRP-2974 Front Panel, Back Panel, and LEDs
- Updated2024-05-10
- 4 minute(s) read
USRP-2974 Front Panel, Back Panel, and LEDs
Front Panel
| 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. | |||
Back Panel
| 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. |