Agilent/Keysight 5347A

The Agilent/Keysight 5347A is a dual-channel frequency counter and power meter combining microwave measurement capability in a portable instrument. Input 1 covers 500 MHz to 20.0 GHz with sensitivity down to −32 dBm (500 MHz to 12.4 GHz) and −27 dBm (12.4 GHz to 20.0 GHz). Input 2 extends low-frequency coverage from 10 Hz to 525 MHz at 25 mV rms sensitivity.

The power meter operates across 0 MHz to 20 GHz with −70 dBm to +20 dBm range, sensor-dependent, delivering 50 dB dynamic range in 10 dB steps.

Technical Specifications

Input 1 (Type N, female)

• Frequency range: 500 MHz to 20.0 GHz


• Sensitivity: −32 dBm to −35 dBm (500 MHz–12.4 GHz); −27 dBm to −32 dBm (12.4 GHz–20.0 GHz)


• Maximum input: +7 dBm; damage level +25 dBm peak


• Resolution: 1 Hz or 10 kHz, selectable


• Tracking speed: 1 MHz/sec (1 Hz) or 1 GHz/sec (10 kHz)


• Acquisition time: <125 ms (1 Hz) or 6 dB above signals within 500 MHz; >20 dB above signals within 500 MHz to 20 GHz Frequency Counter

Input 2 (BNC, female)

• Frequency range: 10 Hz to 525 MHz


• Sensitivity: 25 mV rms (15 mV rms typical)


• Impedance: 1 MΩ nominal shunted 5 kHz, 50 Ω)


• Resolution: 1 Hz or 10 kHz, selectable Power Meter


• Frequency range: 0 MHz to 20 GHz (sensor-dependent)


• Power range: −70 dBm to +20 dBm (sensor-dependent)


• Supported sensors: HP 8481A, HP 8481D, HP 8484A, HP 8485A


• Dynamic range: 50 dB in 10 dB steps


• Display units: Watts, dBm


• Resolution: 0.01 dB logarithmic

Key Features

• Five-key user interface simplifies operation


• Optional internal battery: up to 2 hours cordless operation


• Dual-input architecture: microwave (N-type) and low-frequency (BNC) channels


• AC-coupled inputs on both channels


• Modulation tolerance: any AM index; FM up to 10 MHz

Compatibility & Integration

• Compatible with HP power sensors (8481A, 8481D, 8484A, 8485A)


• Optional HP-IB interface for ATE system integration and manual mode control (±60 MHz deviation)