Advantest U4342N – RF Field Analyzer

The Advantest U4342N RF Field Analyzer is a portable instrument for precise RF signal analysis across telecommunications, RF design, and EMC testing applications. Operating from 9 kHz to 2.2 GHz with 75 Ω input impedance, it delivers 100 dB display dynamic range and sensitivity to ≤16 dBµV at 30 MHz. The integrated 20 dB pre-amplifier, tracking generator (100 kHz to 2.2 GHz), and specialized demodulation functions - including TDMA-TDD waveform observation and TV picture/sound demodulation - enable comprehensive field measurements.

A 6-inch color TFT LCD with ±15° tilt adjustment provides clear visibility in variable lighting. Dual PCMCIA memory card slots store settings and measured data with dust-proof protection. The unit operates on AC (100/230 V), DC (+10 to +16 V), or an internal battery pack delivering approximately 2 hours runtime with 1-hour recharge time.

Measuring 148 (H) × 291 (W) × 330 (D) mm and weighing 6.8 kg without battery, it meets demanding field portability requirements while maintaining performance across +0°C to +50°C operating temperatures.

Technical Specifications

• Frequency Range: 9 kHz to 2.2 GHz


• Input Impedance: 75 Ω


• Display Dynamic Range: 100 dB


• Sensitivity: ≤16 dBµV at 30 MHz (reference -10 dBm at 20–30°C)


• Pre-Amplifier Gain: 20 dB (integrated)


• Tracking Generator Output: 100 kHz to 2.2 GHz; harmonic distortion <−20 dBc; non-harmonic distortion <−30 dBc; VSWR ≤1.5 (100 kHz to 2 GHz), ≤2.0 (100 kHz to 2.2 GHz)


• Power Supply: 100/230 V AC; +10 to +16 V DC; battery pack (~2 hours operation, 1-hour recharge)


• Display: 6-inch color TFT LCD, ±15° tilt


• Dimensions: 148 (H) × 291 (W) × 330 (D) mm


• Weight: 6.8 kg (without battery); 9 kg (with battery)


• Operating Temperature: +0°C to +50°C, ≤85% RH (non-condensing)


• Storage Temperature: −20°C to +60°C, ≤85% RH (non-condensing)

Key Features

• TDMA-TDD waveform observation with single-slot burst analysis (625 µs) and ID-triggered sweep initiation; demodulated CI, CS-ID, and PS-ID display


• TV demodulation function for picture/sound analysis in broadcast IF and CATV uplink bands


• Frequency characteristic measurement via tracking generator; impedance matching and return loss evaluation via directional coupler


• Dual PCMCIA memory card slots (JEIDA Ver. 4.1/PCMCIA Rel. 2.0) with dust-proof shutters for panel and data storage


• Reduced dB measurement capability

Typical Applications

• Telecommunications signal verification


• RF impedance and return loss characterization


• EMC field testing and compliance verification


• Broadcast and CATV system analysis

Compatibility & Integration

• PCMCIA memory card storage (JEIDA Ver. 4.1/PCMCIA Rel. 2.0) for field data portability


• Multi-voltage DC input (+10 to +16 V) for varied power distribution systems