Anritsu MA2400xA – Thermal Sensors

The Anritsu MA2400xA series are thermal power sensors engineered for precise average power measurements across RF and microwave frequencies. Built on Seebeck element technology, these sensors deliver true-RMS detection for any incident waveform by measuring thermal gradients and charge migration between dissimilar metals. Each sensor stores calibration factors and linearity correction data in onboard EEPROM, enabling automatic interpolation and correction by compatible power meters.

Technical Specifications Frequency Range

MA24002A: 10 MHz to 18 GHz

MA24004A: 10 MHz to 40 GHz

MA24005A: 10 MHz to 50 GHz Power Measurement

Dynamic range: −30 dBm to +20 dBm

Rise time: < 15 ms Sensor Linearity

< 1.8% (up to 18 GHz)

< 2.0% (up to 40 GHz)

< 2.5% (up to 50 GHz)

MA24005D specification: −30 to +15 dBm with additional 1% error above +15 dBm Standing Wave Ratio (SWR)

< 1.90 (10 to 50 MHz)

< 1.17 (50 to 150 MHz)

< 1.10 (150 MHz to 2 GHz)

< 1.15 (2 to 12.4 GHz)

< 1.20 (12.4 to 18 GHz)

< 1.25 (18 to 32 GHz)

< 1.30 (32 to 40 GHz)

< 1.40 (40 to 50 GHz)

Key Features

True-RMS detection delivers accurate average power measurements regardless of signal type

Precision RF connectors with hexagon coupling nuts for standard torque-wrench attachment

Internal EEPROM with stored calibration factors and linearity correction algorithms

Available connector options: N(m), K(m), V(m)

Typical Applications

RF and microwave power measurement across DC to millimeter-wave frequencies

Signal characterization in test and measurement environments

Power meter integration for automated correction and data logging

Compatibility & Integration Designed for use with Anritsu ML2430, ML2480, and ML2490 series power meters. Systems using ML2407A/08A or ML2437A/38A power meters require firmware revision 3.10 or higher when paired with MA24xxD and MA2400xA series sensors.