The Anritsu ML2438A is a dual-channel power meter delivering precision RF and microwave measurements across 100 kHz to 65 GHz. This instrument combines thermal meter accuracy, diode meter speed, and peak power meter display capability in a single platform. The two independent channels eliminate multiplexing, enabling simultaneous gain and output power characterization. With sampling rates exceeding 35,000 times per second and dynamic range up to 90 dB, the ML2438A handles both CW and burst profiles across wide power spans. Its ruggedized polycarbonate chassis, splash-resistant design, and optional high-capacity NiMH battery (8-hour operation) make it equally at home in the lab or field. The graphics display renders burst profiles and power-versus-time waveforms in real time, while sensor EEPROMs automate calibration correction across the frequency band.
## Technical Specifications
• **Channels:** 2 independent
• **Frequency Range:** 100 kHz to 65 GHz (sensor dependent)
• **Sampling Rate:** > 35,000 samples/second
• **Dynamic Range:** Up to 90 dB CW, > 60 dB Peak (sensor dependent)
• **Power Measurement Range:** −70 dBm to +47 dBm (0.1 nW to 50 W); sensor and attenuator dependent. Couplers extend range for higher power levels.
• **Resolution Bandwidth:** 100 kHz
• **GPIB Data Transfer Rate:** > 600 readings/second
## Key Features
• Graphics display with burst profile and power-versus-time graphical rendering
• Dual independent channels eliminate multiplexing for simultaneous measurements
• Fast thermal and diode sensors respond immediately to power changes
• Sensor EEPROM with automatic calibration factor interpolation and frequency-dependent correction
• Peaking meter with dual bar graph for tuning procedures
• Max/Min Hold for drift analysis and power identification
• Low-level averaging with post-average low-pass filter for visibility down to −70 dBm
• Limit lines for fixed high/low pass/fail testing
• Offset table compensates for frequency response of attenuators, couplers, and cables
• Triggering controls for peak power and burst measurement timing
• Rugged polycarbonate chassis with splash resistance; optional front cover and softcase
• Optional high-capacity NiMH battery supporting 8 hours continuous operation
## Compatibility & Integration
Supports Anritsu MA242xD, MA244xD, MS247xD, and MA248xD Series power sensors. MA2420A/B thermal sensors deliver 50 dB dynamic range. MA2440A high-accuracy sensors provide 87 dB CW and > 57 dB Peak. MA2460A/B fast diode sensors offer 80 dB. MA2470A universal sensors reach 90 dB CW and > 60 dB Peak. MA2480A universal sensors provide 80 dB dynamic range.
