Agilent/Keysight 70911A – RF Section Module

The Keysight 70911A is an ultra-wide bandwidth IF module that extends the receiver capabilities of Keysight 70000 series spectrum analyzers. When integrated with the 71209A option 001 analyzer, it forms the 71910A wide-bandwidth surveillance receiver, delivering signal monitoring and capture across 100 Hz to 26.5 GHz. The module provides a linear IF signal path with multiple output options and flexible bandwidth selection, making it suitable for surveillance applications, signal searching, and stimulus-response testing scenarios.

– Technical Specifications

Frequency Range:
• 100 Hz to 26.5 GHz (71910A receiver configuration)

Receive Bandwidths:
• 10 MHz to 100 MHz in 10% increments
• Up to 3 MHz for signal search
• Up to 36 MHz with microwave preselection
• Up to 100 MHz without preselection

Intermediate Frequency (IF):
• Standard IF output: 321.4 MHz with linear video
• Optional IF outputs: 70 MHz or 140 MHz
• Optional 70 MHz IF channel filters available

IF Gain:
• 0 dB to 70 dB in 1 dB steps

Signal Path & Outputs:
• Linear IF signal path for signal fidelity
• Video output at full selected bandwidth
• Optional analog I/Q outputs
• Optional demodulated FM output

– Key Features

• Multiple IF output options (321.4 MHz, 70 MHz, or 140 MHz)
• Selectable gain control in 1 dB increments across 70 dB range
• Flexible bandwidth configuration with and without preselection
• Integrated FM demodulation capability (option 005)
• Analog I/Q outputs for advanced signal processing (option 004)

– Typical Applications

• Wide-bandwidth RF signal surveillance and monitoring
• Signal searching and detection across extended frequency range
• Stimulus-response testing with configurable downconversion
• Data collection across broad spectrum with switchable bandwidths

– Compatibility & Integration

Designed for the Keysight 70000 series spectrum analyzer family. Requires 71209A option 001 analyzer with specific firmware (date code 940120, B.05.00), 68020 CPU, and 1 Mbyte RAM. Serial numbers 3327A05741 or lower may require upgrade kit (option 098 or 099). The 70001A mainframe may require air flow modification when installed with additional option cards. Limited to four circuit board slots in mainframe; option 004 occupies two slots.