Rigol DSA705 – Spectrum Analyzer, 100kHz to 500MHz

The Rigol DSA705 is a spectrum analyzer for RF research, design verification, and production testing across 100 kHz to 500 MHz. Built on all-digital IF technology, it delivers phase noise of <-80 dBc/Hz @ 10 kHz offset and measured sensitivity down to -130 dBm with the integrated preamplifier active. The 8-inch WVGA display (800×480 pixels) presents signal analysis with 1 Hz frequency resolution and <1.5 dB level uncertainty.

– Technical Specifications

• Frequency Range: 100 kHz to 500 MHz
• Resolution Bandwidth: 100 Hz minimum
• Frequency Resolution: 1 Hz
• Phase Noise: <-80 dBc/Hz @ 10 kHz offset
• Displayed Average Noise Level (DANL):
– 100 kHz to 1 MHz: <-110 dBm (typical)
– 1 MHz to 500 MHz: <-120 dBm (typical)
– With Preamplifier, 100 kHz to 1 MHz: <-130 dBm (typical)
– With Preamplifier, 1 MHz to 500 MHz: <-130 dBm (typical)
• Amplitude Range: DANL to +20 dBm
• Level Measurement Uncertainty: <1.5 dB
• Maximum Input Voltage: 50 V
• Internal Reference: 10 MHz
• Display: 8-inch WVGA, 800×480 pixels
• Dimensions: 361.6 mm (W) × 178.8 mm (H) × 128 mm (D)
• Weight: 4.25 kg

– Key Features

• All-digital IF architecture ensures stable, reliable measurements
• Integrated preamplifier for enhanced sensitivity across the full frequency range
• AM/FM demodulation standard; ASK/FSK signal capture capability
• EMI pre-compliance testing with optional quasi-peak detector and 6 dB filter
• Built-in 2FSK testing function for modulated signal analysis
• Auto Tune, Auto Range, Auto Scale, and Auto Couple functions simplify operation
• Internal waveform storage with USB and LAN (LXI) connectivity
• User-accessible help system with function descriptions and guided procedures

– Typical Applications

• RF component characterization and verification
• EMI troubleshooting and pre-compliance assessment
• Production line signal verification
• Modulated signal measurement and demodulation

– Compatibility & Integration

Standard interfaces include LAN (LXI), USB Host, and USB Device. GPIB (IEEE-488) support available via optional USB-GPIB module. Optional Seamless Signal Capture (SSC-DSA) extends data logging capabilities. Near field probes (NFP-3) and external software packages (Ultra Sigma, Ultra Spectrum, S1210 EMI Pre-compliance Software) extend measurement reach.