The HP/Agilent 3585A is a high-performance spectrum analyzer for signal analysis from 20 Hz to 40 MHz. It delivers exceptional frequency measurement accuracy, superior sensitivity down to -152 dBm, and 70 dB dynamic range without attenuator switching. The instrument supports continuously variable frequency span (1 kHz to 40 MHz), adjustable resolution bandwidth (1 Hz to 1 MHz), and multiple detector modes including peak, sample, and averaging. Equipped with IEEE-488 GPIB control, external reference input, and IF output for further processing, the 3585A serves research, development, and production environments requiring detailed spectral characterization. Third-order intercept of +15 dBm and spurious-free dynamic range exceeding 70 dB ensure low-distortion measurements across demanding signal scenarios.
– Technical Specifications
Frequency Performance
• Analysis Bandwidth: 20 Hz to 40 MHz
• Frequency Span: 1 kHz to 40 MHz continuously variable
• Resolution Bandwidth: 1 Hz to 1 MHz in 1-2-5 steps
• Frequency Accuracy: ±(frequency span/1000 + 1 Hz)
• Reference Frequency Stability: ±2 ppm per year
Amplitude Measurement
• Dynamic Range: 70 dB (without attenuator switching)
• Displayed Average Noise Level: -152 dBm (typical, 10 MHz, 1 Hz RBW)
• Input Attenuator: 0 to 60 dB in 10 dB steps
• Vertical Accuracy: ±0.5 dB
• Amplitude Units: dBm, dBV, V, dBmV, dBuV, W, dBW, Vrms, Vpeak
• Scale Factor: 10 dB/division, 5 dB/division, 2 dB/division, Linear
Signal Processing
• Video Bandwidth: 0.01 Hz to 10 kHz in 1-3-10 steps
• Detector Modes: Peak, Sample, Average (RMS, Logarithmic)
• Sweep Time: Auto-optimized or manual selection
Linearity & Distortion
• Third Order Intercept: +15 dBm (typical)
• Second Order Intercept: +20 dBm (typical)
• Spurious-Free Dynamic Range: >70 dB (typical)
• Harmonic Distortion: <-70 dBc (typical, 10 MHz, +10 dBm input)
Interfaces & Power
• RF Input: Type N female, 50 Ω
• External Reference: BNC female, 1 MΩ
• Trigger & IF Output: BNC female connectors
• GPIB: IEEE-488 standard
• Line Voltage: 100/120/220/240 VAC ±10%
• Power Consumption: ~250 VA
• Line Frequency: 48 to 66 Hz
– Key Features
• Selectable amplitude units support multiple measurement conventions
• Adjustable video bandwidth minimizes noise floor while preserving signal fidelity
• Average noise level measurement for precise noise characterization
• Manual or automatic sweep optimization
– Typical Applications
• Real-time signal monitoring and spectral analysis
• Electronic component characterization and validation
• EMC pre-compliance testing
• Low-level signal detection and measurement
– Compatibility & Integration
GPIB interface enables remote control and automated data acquisition in test system configurations. External reference input and IF output support synchronized operation and signal chain extensions.
Reviews
There are no reviews yet.