The Agilent/Keysight EPM-441A and EPM4418A are single-channel, programmable power meters engineered for precise RF and microwave power measurement across diverse frequency bands. These instruments deliver both average power readings and detailed power-level analysis through compatibility with multiple sensor families, supporting applications in wireless communications, aerospace, and defense sectors. The EPM-441A variant maintains code compatibility with legacy HP 436A, 437B, and 438A equipment while offering fast measurement acquisition, intuitive hardkey and softkey control, and automatic zero and calibration functions.
Technical Specifications
• Frequency Range: 100 kHz to 110 GHz (sensor dependent)
• Power Measurement Range: −70 dBm to +44 dBm (100 pW to 25 W, sensor dependent)
• Absolute Accuracy: ±0.02 dB logarithmic or ±0.5% linear mode
• Relative Accuracy: ±0.04 dB logarithmic or ±1.0% linear mode
• Measurement Speed: Up to 200 readings per second with ECP-series sensors over HP-IB; 2× improvement versus HP 437B using HP 8480-series sensors
• Power Reference Output: 1.00 mW (0.0 dBm), factory set to ±0.7% traceable to NIST; worst-case accuracy ±1.2% (±0.9% rss) over one year
• Power Supply: 100–240 VAC, 50/60 Hz
• Display: High-resolution LCD with backlighting and contrast control
• Dimensions: Same height and width as HP 437B (EPM-441A)
• Weight: Approximately 10 lbs
– Key Features
• Fully automatic digital zero correction for residual offset elimination
• Automatic sensor calibration capability
• Storage and recall of ten instrument configurations
• GPIB and RS232 connectivity for remote control and data acquisition
• Hardkey access to frequent functions with supplemental softkey menu navigation
– Typical Applications
• Wireless communication system characterization
• Aerospace and defense power measurement
• RF and microwave system optimization and validation
– Compatibility & Integration
Fully compatible with HP 8480 and E-series power sensors, plus HP ECP-series sensors. The EPM-441A maintains code compatibility with HP 436A, 437B, and 438A instruments for legacy test environment integration.
