Anritsu MA2475A – Power Sensor

The Anritsu MA2475A is a standard diode power sensor that delivers accurate RF and microwave power measurements from 10 MHz to 50 GHz. Built for Anritsu ML2430, ML2480, and ML2490 series power meters, it combines a 90 dB dynamic range with precision linearity better than 1.8% across a -70 dBm to +20 dBm measurement window. The sensor's internal EEPROM stores calibration data as a function of frequency, power, and temperature, enabling Anritsu power meters to automatically interpolate and correct readings without manual intervention.

This approach eliminates setup complexity while maintaining measurement integrity for both continuous wave and TDMA applications.

Technical Specifications

• Frequency Range: 10 MHz to 50 GHz


• Power Measurement Range: -70 dBm to +20 dBm (100 pW to 100 mW)


• Dynamic Range: 90 dB


• Linearity: Better than 1.8%


• Rise Time: 4 µs


• Noise Floor: Guaranteed -60 dBm; typical -70 dBm


• SWR: <1.90 (10–50 MHz); <1.17 (50–150 MHz); <1.40 (40–50 GHz)


• Connector: APC-2.4mm


• Calibration Data: Internal EEPROM with frequency, power, and temperature compensation

Key Features

• High dynamic range of 90 dB enables measurement from noise floor to +20 dBm in a single sweep


• Linearity specification of better than 1.8% supports precision RF and microwave characterization


• Automatic calibration factor retrieval via internal EEPROM eliminates manual correction routines


• Fast 4 µs rise time accommodates TDMA signal acquisition


• Controlled SWR across 10 MHz to 50 GHz minimizes measurement uncertainty from reflection

Typical Applications

• RF and microwave power measurement in test and manufacturing environments


• TDMA signal power characterization and compliance verification


• Continuous wave power monitoring across broad frequency bands


• Power meter calibration and validation workflows

Compatibility & Integration The MA2475A integrates directly with Anritsu ML2430, ML2480, and ML2490 series power meters. When used with MA24xxD and MA2400xA Series sensors on ML2407A/08A and ML2437A/38A Power Meters, firmware revision 3.10 or higher is required.