Agilent/Keysight 70902A – RF Section Module

The Agilent/Keysight 70902A is an IF section module engineered for the HP 70000 Modular Measurement System. It processes 21.4 MHz IF signals and delivers critical signal conditioning for spectrum analyzers and lightwave signal analyzers. The module features a calibrated logging amplifier with integrated detection circuitry, resolution bandwidth filtering, and video filtering to support precision RF measurements and signal analysis in demanding test environments.

Technical Specifications

• IF Signal Processing: Accepts 21.4 MHz IF input


• IF Output: 3 MHz output for external instrument connectivity


• Resolution Bandwidth: 10 Hz to 300 kHz, selectable in 10% increments (with 1, 3, 10 sequence options)


• Extended Bandwidth Mode: When paired with HP 70903A, achieves 10 Hz to 3 MHz range


• Module Format: 1/8-width slot in HP 70000 system architecture

Key Features

• Calibrated logging amplifier and detector for amplitude accuracy


• Resolution bandwidth filters with selectable increment sequences


• Video filtering circuitry for signal conditioning


• 3 MHz IF output enables direct connection to demodulators, digitizers, and oscilloscopes


• Slave module operation controlled by system master (HP 70900A(B) Local Oscillator or equivalent)

Typical Applications

• RF and microwave spectrum analysis


• Lightwave signal measurement and analysis


• Research and development signal characterization


• External demodulation and signal digitization workflows

Compatibility & Integration The 70902A integrates into the HP 70000 Modular Measurement System architecture as a dedicated IF processing stage. It operates as a slave module under master control. Pairing with the HP 70903A expands resolution bandwidth capability to 3 MHz. Compatible with RF section modules and external mixer interfaces that output 21.4 MHz IF signals.