Keysight EPM and EPM-P Series Power Meters
6 models with full specifications from Keysight Technologies (Agilent HP).
The Keysight Technologies (formerly Agilent / HP) EPM and EPM-P series consist of high-performance single- and dual-channel average or peak/average RF and microwave power meters. Operating across a frequency range of 9 kHz to 110 GHz and a power range of -70 to +44 dBm (both sensor dependent), these instruments provide fast, repeatable power measurements for benchtop and automatic test equipment (ATE) environments. This guide explains the key architectural differences between standard EPM average power meters and high-sampling EPM-P peak and average power meters, helping technical buyers select the optimal model for their signal analysis requirements.
- Frequency Range
- 9 kHz to 110 GHz (sensor dependent)
- Power Range
- -70 to +44 dBm (sensor dependent)
- Reference Oscillator
- 50 MHz, 1 mW (0 dBm)
- Operating Temperature
- 0 to 55 °C
Models in this series
| Model | Type | Dimensions (W×H×D) | Display | Operating Temperature |
|---|---|---|---|---|
| N1914A | Power | 212.6 x 88.5 x 348.3 | High-resolution color LCD | 0 to +55 °C |
| E4418B | Power | 212.6 × 88.5 × 348.3 mm | LCD with LED backlight | 0 to 55 °C |
| N1913A | Power | 212.6 × 88.5 × 348.3 | High-resolution color LCD | 0 to 55 |
| E4419B | Power | 212.6 × 88.5 × 348.3 | LCD with LED backlight | 0 to 55 |
| E4417A | Power | 212.6 x 88.5 x 348.3 mm | LCD with LED backlight | 0 to 55 |
| E4416A | Power | 212.6 × 88.5 × 348.3 | High-resolution LCD with backlighting | 0 to 55 |
EPM vs. EPM-P Architectural Differences
The series is divided into standard EPM average power meters and EPM-P peak and average power meters. The average-only EPM meters—such as the single-channel E4418B and N1913A, and the dual-channel E4419B and N1914A—are designed for reliable average power measurements. These units offer measurement speeds up to 200 readings per second for the E4418B and E4419B, and up to 400 readings per second for the newer N1913A and N1914A when using E-series sensors.
In contrast, the EPM-P series, which includes the single-channel E4416A and dual-channel E4417A, is designed to analyze complex modulation formats. These models feature a 20 MSa/s continuous sampling rate to support peak, average, peak-to-average ratio, and time-gated measurements. They also feature pre-defined wireless configurations for standard formats such as GSM, EDGE, W-CDMA, and Bluetooth.
Channel Configurations and Sensor Support
Selecting the right model depends on the required channel density and sensor type. Single-channel installations can utilize the average-only E4418B or the newer N1913A, while peak-and-average tasks require the E4416A. Dual-channel setups can use the average-only E4419B or N1914A, or the peak-and-average E4417A.
Channel expansion is possible on the newer N1913A and N1914A models. The single-channel N1913A can expand up to 3 channels, and the dual-channel N1914A can expand up to 4 channels via optional USB hosts. Sensor compatibility also differs across generations: older E4418B and E4419B models support E-series and 8480 series sensors, whereas the N1913A and N1914A add compatibility for N8480 and U2000 Series USB sensors. The EPM-P E4416A and E4417A models support E9320 peak/average sensors, E9300 average, E-series CW, and 8480 series sensors.
Frequently asked questions
- Can the N1913A replace an older E4418B?
- Yes. The N1913A is designed as a direct drop-in replacement for the E4418B. It retains core compatibility while introducing modern features like a high-resolution color LCD and standard LAN (LXI-C) and USB interfaces.
- What is the difference in sampling capabilities between EPM and EPM-P models?
- Standard EPM models (like the E4418B and E4419B) measure average power. EPM-P models (E4416A and E4417A) integrate a 20 MSa/s continuous sampling rate, which allows them to capture peak power, peak-to-average ratios, and perform time-gated measurements on complex modulated signals.