HP / Agilent 70904A RF Section, 100 Hz to 2.9 GHz

The HP/Agilent 70904A RF Section is a plug-in RF module for the HP 70000 series modular measurement system, delivering signal processing and analysis from 100 Hz to 2.9 GHz. This component performs RF signal manipulation, spectrum analysis, and signal monitoring in laboratory and enterprise test environments. It operates as a dedicated RF front-end with configurable bandwidth and sensitivity settings, enabling precise characterization of complex signals across communications, aerospace, and general RF applications.

– Technical Specifications

• Frequency Range: 100 Hz to 2.9 GHz
• Input Impedance: 50 Ohms
• Input Connector: Type-N female
• Resolution Bandwidth (RBW): Selectable; configurable from narrow bandwidths for signal identification to wider bandwidths for spectrum surveys
• Video Bandwidth (VBW): Selectable; applies trace smoothing
• IF Bandwidth: Configurable; dependent on mainframe and installed modules
• Noise Floor: Defined by system sensitivity; minimum detectable signal level varies with bandwidth and mainframe configuration
• Dynamic Range: Defines simultaneous measurement of largest and smallest signals without distortion
• Amplitude Accuracy: Precision of measured signal amplitude
• Frequency Accuracy: Precision of measured signal frequency
• Phase Noise: Random phase fluctuations; critical for adjacent channel and communications measurements
• Maximum Input Level: Highest signal level accepted without damage or excessive distortion

– Key Features

• Modular design integrates directly into HP 70000 series backplane
• Configurable resolution and video bandwidths for optimized measurement
• Standard 50 Ohm RF input for direct signal connection
• IF data interface with mainframe control signals and power delivery

– Typical Applications

• Spectrum analysis across 100 Hz to 2.9 GHz band
• AM/FM demodulation and signal monitoring
• Adjacent channel power (ACP) measurement
• Channel power and occupied bandwidth (OBW) analysis
• Signal characterization in communications and RF testing

– Compatibility & Integration

The 70904A functions exclusively within HP 70000 series modular measurement systems, requiring compatible mainframe and interface backplane for operation.