Agilent / Keysight E9325A E-Series Peak and Average Power Sensor, 50 MHz to 18 GHz

The Agilent/Keysight E9325A is a peak and average power sensor engineered for precision RF power measurement across 50 MHz to 18 GHz. It delivers simultaneous peak and average power readings, making it ideal for characterizing complex modulated signals, pulsed transmissions, radar systems, and wireless communication devices. On-board EEPROM calibration data compensates for frequency, power level, and temperature variations, achieving ±0.04 dB absolute accuracy in logarithmic mode.

Technical Specifications

Frequency coverage spans 50 MHz to 18 GHz. Power measurement range is −60 dBm to +20 dBm in average-only mode and −50 dBm to +20 dBm in normal mode. Video bandwidth is 300 kHz. Absolute measurement uncertainty (log) is ±0.04 dB; relative accuracy (log) is ±0.08 dB. For power levels exceeding 0 dBm, add ±0.1%/dB to calibration factor uncertainty. Zero drift remains below ±5 nW in normal mode and ±60 pW in average-only mode. The sensor delivers up to 1000 corrected readings per second via GPIB.

Key Features

• Peak and average power simultaneous measurement


• Internal calibration data stored in EEPROM


• Precision Type-N connector


• GPIB interface with full SH1, AH1, T6, TE0, L4, LE0, SR1, RL1, PP1, DC1, DT1, C0 compatibility


• TTL output (4.8 V max high, 0.2 V max low) and TTL input (3.5–5 V high, −0.3–1 V low)


• Male 9-pin D-subminiature external controller interface

Typical Applications Optimized for TDMA wireless formats including NADC, GSM, and EDGE modulation schemes. Suitable for pulsed signal and radar system characterization, as well as general RF/microwave power analysis in laboratory and field environments.

Compatibility & Integration Operates with Keysight EPM-P series (E4416A/17A) and P-Series (N1911A/12A) power meters. Requires E9288A, B, or C interconnect cable (not supplied).