The Advantest U4341N is a portable RF field analyzer engineered for spectrum analysis, signal monitoring, and interference detection across 9 kHz to 2.2 GHz. Built for field and laboratory deployment, it combines a 100 dB display dynamic range with a 20 dB internal preamplifier to resolve weak signals in complex RF environments. The instrument operates on 100/230 V AC, +10 to +16 V DC external power, or an integral detachable battery pack delivering approximately 2 hours of continuous operation with 1-hour recharge capability.
Technical Specifications
• Frequency Range: 9 kHz to 2.2 GHz
• Input Impedance: 75 Ω
• Display Dynamic Range: 100 dB
• Internal Preamplifier: 20 dB gain
• Power Supply: 100/230 V AC, +10 to +16 V DC external, or detachable battery pack
• Battery Runtime: Approximately 2 hours continuous operation
• Battery Charging Time: 1 hour (full charge)
• Weight: 6.8 kg or less (without battery); 9 kg or less (with battery)
• Display: 6-inch color TFT LCD with ±15° tilt mechanism
• Memory: Two standard JEIDA Ver. 4.1/PCMCIA Rel. 2.0 slots for panel settings and measured data storage
• Operating Temperature: 0°C to 50°C
• Storage Temperature: -20°C to +60°C
• Humidity: 85% or less
– Key Features
• Reduced dB measurement function for controlled dynamic range analysis
• TDMA-TDD waveform observation with PHS-ID demodulator—single-slot burst capture (625 µs) with sweep times to 4.5 ms, ID trigger and ID marker functions for demodulated data (CI, CS-ID, PS-ID) and PHS channel frequency assignment
• TV demodulation function with simultaneous picture and sound output for direct waveform comparison
• Shoulder strap attachment for field portability
• Tiltable display for variable viewing angles
– Typical Applications
• RF spectrum monitoring and characterization
• Electromagnetic interference (EMI) detection and localization
• PHS burst signal analysis in TDMA-TDD systems
• Television broadcast center and CATV uplink verification
• Signal presence and occupancy assessment across UHF, VHF, and microwave bands
– Compatibility & Integration
Two PCMCIA memory card slots enable rapid field data collection, off-instrument analysis, and configuration portability between units.
