SDR - Stand-Alone

SDR Stand-Along 2974 06/24/44 Specifications

Pinout

Use the pinout to connect to terminals on the SDR Stand-Alone 2974.

Figure 1. Front Panel

Table 1. Connector Descriptions
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 ETH0		SFP+ port used for 10G ETH connectivity to other ethernet devices. Connects to the embedded Linux computer for communication with LabVIEW RT.
1G/10G ETH1		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.

Table 2. LEDs
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 SDR Stand-Alone 2974. Contact NORTHBRIDGES 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 ETH0	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 ETH1 10GbE		Indicates the status of the 10G ETH link.	OFF	-	The 10G ETH link is down.
			Green	Solid	The 10G ETH link is up.

Figure 2. Back Panel

Table 3. Connector Descriptions
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

	Stand-Alone 2974-06	Stand-Alone 2974-24	Stand-Alone 2974-44
System on module (SoM)	Linux	Linux	Linux
CPU	I7 9700	I7 9700	I7 9700
Memory[1]	16G	16G	16G
NVMe SSD[2]	500GB	500GB	500GB
SFP+[3]	10Gbps	10Gbps	10Gbps
Cabled PCIe	PCIe Gen2 x4	PCIe Gen2 x4	PCIe Gen2 x4
MicroUSB[4]	USB3.0 x 4	USB3.0 x 4	USB3.0 x 4
RJ45	1Gbps	1Gbps	1Gbps

FPGA and Baseband

	Stand-Alone 2974-06	Stand-Alone 2974-24	Stand-Alone 2974-44
FPGA	Kintex-7 XC7K410T	Kintex-7 XC7K410T	Kintex-7 XC7K410T
DRAM	1G ETH host connection	1G ETH host connection	1G ETH host connection
ADC resolution	14 bits	14 bits	14 bits
DAC resolution	16 bits	16 bits	16 bits
Maximum I/Q sample rate	200 MSps	200 MSps	200 MSps

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