The Agilent/Keysight 3705A is a selective level meter engineered for precision signal analysis in telecommunications systems. This instrument delivers high-accuracy level measurements across audio and radio frequency bands, with built-in selectivity to isolate and measure signals at specific frequencies while rejecting adjacent interference. The 3705A excels in carrier-to-noise and signal-to-noise ratio characterization, making it essential for system commissioning, maintenance, and RF signal verification.
Technical Specifications
• Frequency Range: Covers audio and radio frequencies relevant to telecommunications applications
• Level Measurement: High-precision signal level measurement in dBm and voltage units
• Selectivity: Frequency-selective filtering for isolated signal measurement
• Modulation Analysis: Amplitude and frequency modulation characterization
• Impedance Measurement: Circuit impedance measurement capability
• Reference: Internal and external frequency reference support
• Interfaces: Analog outputs for monitoring; digital interface options available
– Key Features
• Single-instrument solution for multi-parameter telecommunications signal analysis
• Selective filtering architecture eliminates cross-channel interference in crowded RF environments
• Dual reference options enable phase-coherent measurements and external standard synchronization
• Front-panel analog outputs support strip-chart recorder integration and real-time signal trending
– Typical Applications
• Carrier-to-noise ratio (C/N) measurements
• Signal-to-noise ratio (S/N) measurements
• Intermodulation distortion (IMD) assessment
• Insertion loss characterization
• Level measurements in audio and RF bands
• Transmission line and circuit performance verification
– Compatibility & Integration
The 3705A integrates into existing telecommunications test benches via analog monitoring outputs and reference input/output connections, supporting both standalone operation and system-level measurement configurations.
