National Instruments 783923-01 Software Defined Radio Device

The National Instruments 783923-01 is a software-defined radio (SDR) device designed for flexible and high performance wireless communication applications. It is also known as the USRP-2940R. The model comes with two transmitters and two receiver channels. It supports a wide frequency range from 50 MHz to 2.2 GHz. The device offers a fine frequency step of less than 1 kHz and a maximum instantaneous real-time bandwidth of 40 MHz or 120 MHz depending on the model variant. This ensures precise frequency control and high data throughput.

The 783923-01 device transmitter section provides an adjustable output power ranging from 50 mW to 100 mW (17 dBm to 20 dBm) for frequencies between 50 MHz and 1.2 GHz and 30 mW to 70 mW (15 dBm to 18 dBm) for higher frequencies up to 2.2 GHz. With a gain range of 0 dB to 31 dB in 1 dB steps, users can finely tune transmission signals for various applications. The 16-bit digital-to-analog converter (DAC) ensures high signal fidelity with an 80 dB spurious-free dynamic range (SFDR). The NI 783923-01 device receiver section mirrors the wide frequency range of 50 MHz to 2.2 GHz and supports a gain range of 0 dB to 37.5 dB with 0.5 dB steps. It features a noise figure between 5 dB and 7 dB. This ensures low noise performance and enhances signal reception in challenging environments. The device's 14-bit analog-to-digital converter (ADC) delivers high-resolution signal conversion with an 88 dB SFDR.

Power requirements for the 783923-01 range from 9 V to 16 V DC with a maximum input current of 7.5 A and typical power consumption between 38 W and 44 W. The device includes 1,024 MB of onboard DRAM which facilitates efficient data handling during real time operations. It measures 26.67 cm × 4.06 cm × 21.84 cm and weighs 1.588 kg. This software-defined radio device operates within a temperature range of 23 °C ± 5 °C and supports a relative humidity range of 10 % to 90 %, noncondensing. Safety and compliance certifications include IEC 61010-1, EN 61010-1, and UL 61010-1. The module complies with electromagnetic compatibility (EMC) standards like EN 61326-1 and FCC 47 CFR Part 15B.