The Agilent/Keysight 85081B is a high-impedance input module for the 8508A Vector Voltmeter, enabling precise RF voltage and phase measurements from 100 kHz to 1 GHz. This module delivers 10 µV sensitivity and >90 dB dynamic range, making it ideal for characterizing magnitude and phase relationships in demanding RF and microwave applications.
– Technical Specifications
• Frequency Range: 100 kHz to 1 GHz
• Input Impedance: 100 kΩ (nominal) shunted by 2.5 pF
• Measurement Bandwidth: 1 kHz (nominal)
• Maximum Input Voltage: 2 VAC peak, ±50 VDC
• Sensitivity: 10 µV
• Dynamic Range: >90 dB
• Phase Measurement Resolution: 0.1 degrees minimum (±180 degree range)
• Input Crosstalk: >100 dB (100 kHz to 500 MHz); >80 dB (500 MHz to 1 GHz)
• Impedance SWR: <1.15 (100 kHz to 750 MHz); 80 dB across full frequency span
– Typical Applications
• RF and microwave component and system characterization
• Metrology and calibration measurements
• Group delay and electrical length analysis
• In-circuit probing and design validation
• Automated test system integration
– Compatibility & Integration
Operates with the Agilent/Keysight 8508A Vector Voltmeter. The optional Keysight 11570A accessory kit enables 50-ohm system measurements.
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