Rigol DSA875 – Spectrum Analyzer 7.5 GHz

The Rigol DSA875 is a 7.5 GHz spectrum analyzer engineered for RF signal analysis across education, research and development, and industrial manufacturing. Built on all-digital IF technology, it delivers exceptional sensitivity and phase noise performance with a minimum displayed average noise level (DANL) of -161 dBm typical. The instrument spans 9 kHz to 7.5 GHz with resolution bandwidth down to 10 Hz, enabling detection and characterization of weak signals and narrow-bandwidth emissions.

– Technical Specifications

• Frequency Range: 9 kHz to 7.5 GHz
• Minimum DANL: -161 dBm typical (with optional preamplifier: -161 dBm)
• Phase Noise: -98 dBc/Hz @ 10 kHz offset; -100 dBc/Hz @ 100 kHz typical; -120 dBc/Hz @ 1 MHz typical
• Resolution Bandwidth (RBW): 10 Hz to 1 MHz in 1-3-10 sequence; RBW uncertainty < 5% nominal
• Video Bandwidth (VBW): 1 Hz to 3 MHz in 1-3-10 sequence
• Level Measurement Uncertainty: < 0.8 dB; Total amplitude uncertainty < 1.5 dB
• Frequency Reference: 10 MHz with aging < 1 ppm/year; temperature stability (20–30 °C) < 0.5 ppm
• Frequency Counter Resolution: 1 Hz to 100 kHz
• Frequency Span Range: 0 Hz, 100 Hz to 1.5 GHz
• RF Input Impedance: 50 Ω
• Maximum Input Power: 30 dBm
• Display: 8-inch HD LCD (800×480 pixels)
• Dimensions: 361.6 mm × 178.8 mm × 128 mm; Weight: 4.25–4.55 kg

– Key Features

• All-digital IF architecture for reliability and performance
• Standard preamplifier included
• AM/FM demodulation capability
• Optional EMI filter and quasi-peak detector kit for pre-compliance measurements
• Optional VSWR measurement kit
• Tracking generator available on DSA875-TG models
• Optional advanced measurement functions

– Typical Applications

• RF component and subsystem characterization
• EMI/RFI pre-compliance assessment
• Signal detection and frequency verification
• Educational laboratory environments
• Research and prototyping work

– Compatibility & Integration

• LAN (LXI), USB Host, USB Device standard; optional GPIB (IEEE 488.2)
• Compatible with Rigol Ultra Sigma and NI-VISA Runtime Engine
• Supports Rigol Ultra Spectrum Software and S1210 EMI pre-compliance software
• Accessory compatible with RIGOL VB1080 VSWR Bridge