Agilent/Keysight 8590D

The Agilent/Keysight 8590D is a spectrum analyzer for RF and microwave signal measurement across 9 kHz to 1.8 GHz. It delivers amplitude measurement from -115 dBm to +30 dBm with ±0.3 dB reference accuracy at -20 dBm. The instrument combines flexible resolution bandwidth (3 kHz to 3 MHz, with optional narrowband filters to 30 Hz) and video bandwidth control (1 Hz to 1 MHz) to resolve complex signal environments.

– Technical Specifications

Frequency & Phase
• Frequency range: 9 kHz to 1.8 GHz
• Zero span capability to 1.8 GHz
• Frequency reference aging: ±2 × 10⁻⁷/year
• Frequency reference temperature stability: ±5 × 10⁻⁷
• Initial frequency accuracy: ±0.5 × 10⁻⁶

Amplitude
• Measurement range: -115 dBm to +30 dBm
• Reference level accuracy: ±0.3 dB @ -20 dBm
• Log scale: 0.1, 0.2, 0.5 dB/div and 1–20 dB/div (1 dB steps); 8 divisions
• Reference level resolution: 0.01 dB (log) and 0.12% of reference level (linear)
• Marker readout: 0.05 dB (log) and 0.5% (linear)

Bandwidth & Filtering
• Resolution bandwidth: 3 kHz to 3 MHz
• Optional RBW: 30 Hz, 100 Hz, 200 Hz (EMI), 300 Hz
• RBW switching uncertainty: ±0.4 dB (3 kHz–3 MHz); ±0.5 dB (1 kHz)
• Video bandwidth: 1 Hz to 1 MHz

Dynamic Range & Distortion
• Noise floor: -115 dBm/Hz (typical)
• Second-order dynamic range: ≥75 dB
• Third-order dynamic range: ≥90 dB
• System sidebands: ≤-65 dBc + 20 log N (>30 kHz)

Input Attenuator
• Range: 0 dB to 60 dB with manual and automatic control

– Key Features

• Wide frequency span from 9 kHz through L-band (1.8 GHz)
• Configurable narrowband and standard RBW options for EMI and general-purpose analysis
• Dual dynamic range specifications support both weak-signal detection and high-level measurement
• Selectable amplitude units: dBm, dBmV, dBµV, V, W

– Typical Applications

• EMI/RFI troubleshooting with optional 200 Hz (EMI) RBW
• Component and module characterization below 1.8 GHz
• Transmitter spectral purity and occupied bandwidth measurement
• General RF and microwave signal analysis in development and manufacturing

– Compatibility & Integration

Frequency readout accuracy varies with installed options (HP85900 series). Configuration flexibility supports both manual measurement workflows and system integration scenarios.