The HP/Agilent 85025B is a precision RF detector engineered for signal detection across 10 MHz to 26.5 GHz. It operates in both AC and DC modes, delivering dynamic range from +16 dBm to -55 dBm (AC) and +16 dBm to -50 dBm (DC). Built for the HP 8757 series scalar network analyzers—particularly the 8757D—this detector provides the sensitivity and accuracy required for RF and microwave signal analysis in demanding measurement environments.
Technical Specifications
• Frequency Range: 10 MHz to 26.5 GHz
• Detection Modes: AC and DC
• Dynamic Range (AC Mode): +16 dBm to -55 dBm
• Dynamic Range (DC Mode): +16 dBm to -50 dBm
• Input Impedance: 50 ohms
• Connector Type: APC-3.5 Male (3.5 mm)
• Maximum Input Power: +20 dBm (100 mW)
• Maximum Allowable Input: ±10 VDC
• Return Loss: ≥10 dB (10–40 MHz), ≥20 dB (40 MHz–4 GHz), ≥17 dB (4–18 GHz), ≥12 dB (18–26.5 GHz)
• Frequency Response (DC mode, -10 dBm input): +0.25 dB/−0.75 dB (10–40 MHz), ±0.5 dB (40 MHz–18 GHz)
• Cable Length: 1.22 m
• Weight: 0.24 kg
– Key Features
• Dual-mode detection (AC/DC) for modulated and unmodulated signals
• Extended frequency coverage into the Ka band
• Flat frequency response across the measurement band
• 50-ohm impedance matching with controlled return loss
• Compact design with integrated cable assembly
– Typical Applications
• Scalar network analysis on HP 8757D analyzers
• RF power measurement and signal detection
• Microwave component characterization
• Network parameter verification
– Compatibility & Integration
Designed exclusively for the HP/Agilent 8757 series, specifically the 8757D model. Requires HP 8757A firmware revision 2.0 or higher. Not compatible with 8755 or 8756 analyzers.
