The Advantest TR4172 is a microprocessor-controlled spectrum analyzer built for precision RF measurements across a wide frequency span. It delivers simultaneous four-trace display with 95 dB display dynamic range and integrated tracking generator for complete frequency response characterization of filters, amplifiers, and networks. Phase response and group delay measurement capabilities support detailed device behavior analysis.
– Technical Specifications
Frequency Coverage: 50 Hz to 1800 MHz. DC-coupled operation from 50 Hz; AC-coupled from 10 kHz. Span accuracy better than ±3% above 500 kHz, ±5% at 500 kHz and below.
Resolution Bandwidth: Minimum 10 Hz for high-resolution spectral analysis.
Dynamic Range: 90 dB at −40 dBm input (≥20 MHz); display dynamic range exceeds 95 dB.
Input Stage: 50 Ω BNC connector. Maximum input −30 dBm with +20 VDC bias. Switchable attenuator 0–50 dB in 10 dB steps; ±1 dB accuracy at settings ≥20 dB.
Measurement Resolution:
• Amplitude: 0.1 dB/div
• Phase: 0.2 deg/div
• Group delay: 0.1 ns/div
Display: CRT with simultaneous four-trace capability and logarithmic scaling. Four independent trace memories (A, B, A’, B’) plus four-page display memory with battery backup.
– Key Features
• Integrated tracking generator for response analysis without external stimulation
• Automatic bandwidth, step amplifier, and frequency response error correction
• Frequency response self-correction through tracking generator feedback for absolute level accuracy
• Eight stored measurement condition sets with instant recall
• Multiple markers, zoom, automatic peak search, and auto-centering
• GPIB remote control and data I/O; X-Y plotter output without auxiliary software
– Typical Applications
Filter and amplifier characterization. Frequency response measurement and correction. Phase linearity and group delay analysis. Multi-trace comparative measurements.
– Compatibility & Integration
Standard GPIB interface enables remote instrument control and automated measurement data transfer.
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