Amplifier Research PH2000-Adapter

The Amplifier Research PH2000-Adapter is a dual diode power head that integrates with Amplifier Research PM2002 and PM2000 series power meters to measure RF and microwave power. It converts incident RF power into proportional voltage for meter processing, delivering accurate measurements across a wide frequency range with minimal mismatch error and drift.

Technical Specifications

Frequency & Power Range

• Frequency range: 10 kHz to 8 GHz


• Power measurement range: −60 dBm to +20 dBm


• Maximum RF input: 300 mW (CW), 1 Watt (1 µs peak)


• Impedance: 50 Ohms Performance Metrics

Standing wave ratio varies across the operating band: 1.12 (10 kHz–2 GHz), 1.20 (2–4 GHz), 1.40 (4–8 GHz). Drift and noise are exceptionally low - 150 pW typical lowest-range drift (1 hour, post–2-hour warm-up) and 80 pW RMS noise at 2σ. Power linearity uncertainty at 50 MHz: <1% (below 20 dBm after AutoCal), 3% (10–17 dBm), 6% (17–20 dBm). Temperature coefficient: 0.02 dB/°C (0–25°C) and 0.01 dB/°C (25–50°C). Calibration & Traceability
Supplied with NIST-traceable calibration factors embedded in a data adapter.

Key Features

• Dual diode architecture for stable, low-noise measurement


• 50 Ohm matched impedance minimizes reflection losses


• Low drift specification supports extended measurement intervals


• Type N (Male) RF connector with standard 5-foot power head cable


• Optional cable lengths: 10 ft, 20 ft, 50 ft, 100 ft


• Durable construction suitable for laboratory and field deployment

Typical Applications

• RF power measurement in communications and test systems


• Radiated and conducted immunity testing


• Electromagnetic field analysis


• Compliance and regulatory testing

Compatibility & Integration Designed exclusively for Amplifier Research Model PM2002 and PM2000 series power meters. Data adapter and calibration coefficients supplied with each unit.