Agilent/Keysight 8552B

The Agilent/Keysight 8552B is an Intermediate Frequency (IF) section designed as a plug-in module for the 141T Spectrum Analyzer Mainframe. This IF strip delivers essential amplification, filtering, detection, and video filtering stages that form the signal-processing core of a complete spectrum analyzer system. When paired with a compatible RF section (8553B, 8554B, 8555A, or 8556A) and the 141T Display Section, the 8552B enables detailed waveform characterization and measurement across extended frequency ranges.

Technical Specifications

Frequency Coverage: IF operation paired with RF sections; example configuration with 8553B covers 1 kHz to 110 MHz. IF Bandwidths: 10 Hz to 300 kHz, selectable in 1, 3, 10 sequence. Individual bandwidth calibration accuracy is ±20% (±5% at 10 kHz) referenced to ±3 dB points. Selectivity ratio (60 dB to 3 dB bandwidth) is less than 11:1 for 10 Hz to 3 kHz bandwidths and less than 20:1 for 10 kHz to 300 kHz bandwidths. The 60 dB bandwidth span does not exceed 100 Hz at 10 Hz bandwidth. Amplitude Measurement Range:

• Logarithmic display: −130 dBm to +10 dBm with 10 dB/division or 2 dB/division expansion; 70 dB total display span


• Option H04: −23 dBV to +117 dBV at 10 dB/division Amplitude Accuracy (20°C):


• 0.03–300 kHz bandwidth: ±0.5 dB (log), ±5.8% (linear)


• 0.01–300 kHz bandwidth: ±1.0 dB (log)


• Display accuracy: ±0.25 dB/dB maximum, ±1.5 dB over full 70 dB range Calibrator Output: −30 dBm ± 0.3 dB at 30 ±0.003 MHz. Standard/HD4 outputs 7.07 mV into 50 Ω; HD1/H02 outputs 8.66 mV into 75 Ω. Scan Rates: 16 internal rates from 0.1 ms/div to 10 sec/div in 1, 2, 5 sequence; manual mode supported. Accuracy: ±10% (0.1–20 ms/div), ±20% (50 ms/div–10 sec/div). Scan Modes: Internal ramp with Scan Trigger synchronization, single-scan via front panel, external 0–+8 V control (input impedance >10 kΩ, −1.5 V blanking), and manual scan control.

Key Features

• Selectable video filtering and gain control


• Internal calibrator for amplitude verification


• External scan input for synchronized measurement


• Multiple IF bandwidth options for resolution optimization

Compatibility & Integration Designed exclusively as a plug-in module for the 141T Mainframe with compatible RF sections (8553B, 8554B, 8555A, 8556A) and Display Section.