Marconi IFR Aeroflex CPM46 – 46GHz Counter Power Meter

The Marconi IFR Aeroflex CPM46 is a portable instrument that combines a high-frequency counter, true power meter, and digital voltmeter into a single unit designed for field installation and maintenance. It delivers simultaneous power and frequency measurements on a transflective LCD display readable in direct sunlight and low-light conditions. The counter operates from 10 MHz to 46 GHz with user-selectable resolution from 1 Hz to 1 MHz and measurement times below 250 ms. The integrated power meter supports a range of external sensors, enabling measurements from 30 kHz to 46 GHz with power levels spanning -65 dBm to +44 dBm. An internal rechargeable battery provides approximately 3 hours of continuous operation, making the 4.9 kg instrument ideal for technicians servicing microwave radio systems, communications infrastructure, and radar equipment. The 50 Ω input accepts signals up to +27 dBm via a precision 2.92 mm connector. Power accuracy of ±0.2 dB is achieved after calibration against a 0 dBm, 50 MHz reference, with worst-case uncertainty of ±1.2% over one year. The meter includes auto-calibration, auto-zero, limit checking, and duty cycle measurement capabilities. A 10-point digital voltmeter monitors AGC voltages with 2.5% accuracy across a 0-10 Vdc range.