Anritsu MS2070A-0509 AM/FM Modulation

Overview

The MS2070A-0509 AM/FM Modulation Option extends the Anritsu MS2070A Field Master with comprehensive analog transmitter measurement capabilities. This option delivers a complete suite of AM and FM modulation quality measurements required for broadcast and Land Mobile Radio (LMR) channels to verify transmitter compliance and ensure they do not exceed deviation limits or interfere with adjacent carriers. The integrated measurement software calculates essential audio quality parameters in a portable spectrum analyzer platform.

Key Features

• Single-screen simultaneous display: RF spectrum, audio frequency spectrum, demodulated oscilloscope view, and numeric results
• Real-time simultaneous trace updates for optimal transmitter performance visibility
• Built-in speaker for continuous real-time demodulated audio monitoring
• Automatic SINAD and THD measurement during 1 kHz tone modulation

AM Measurements

• AM Depth: 0% to 100% with ±2% accuracy
• AM Bandwidth: 20 kHz
• Support for standard AM and Upper/Lower Sideband suppressed carrier modes
• Audio results include signal power, carrier frequency, RMS depth, peak-to-peak depth, SINAD, and THD

FM Measurements

• FM Bandwidth: 96 kHz (wide)
• FM Deviation: up to 75 kHz with ±2% accuracy and ±1 kHz typical
• Audio results include signal power, carrier frequency, RMS FM deviation, peak-to-peak deviation, SINAD, and THD

Applications

• Broadcast and LMR transmitter compliance verification
• Modulation quality assurance testing
• Transmitter deviation and audio quality analysis
• Adjacent channel interference assessment
• Transmitter performance monitoring and troubleshooting