Agilent/Keysight 8765BW

The Agilent/Keysight 8765BW is a programmable step attenuator engineered for precision RF and microwave signal control. It delivers wide attenuation range, excellent accuracy, and repeatability across demanding test, measurement, and automated testing environments. Four frequency-rated models support applications from DC to 40 GHz, with insertion loss as low as 0.2 dB and isolation exceeding 110 dB across standard bands.

– Technical Specifications

Frequency Range
• 8765A: DC to 4 GHz
• 8765B: DC to 20 GHz
• 8765C: DC to 26.5 GHz
• 8765D: DC to 40 GHz (2.4 mm or 2.92 mm connectors)

Insertion Loss & Repeatability
• 8765A/B: ≤ 0.2 dB + 0.025 f (f in GHz)
• 8765C: ≤ 0.25 dB + 0.027 f
• 8765D: ≤ 0.2 dB + 0.023 f (DC–26.5 GHz); ≤ 0.75 dB + 0.023 f (26.5–40 GHz)
• Repeatability: < 0.03 dB @ 25 °C over 5,000,000 cycles

Isolation
• 8765A/B/C/D (DC–26.5 GHz): ≥ 110 − 2.25 f dB
• 8765D (26.5–40 GHz): ≥ 50 dB

SWR Performance
• 8765A: < 1.2 (DC–4 GHz) to < 1.7 (18–20 GHz)
• 8765B: < 1.2 (DC–4 GHz) to < 1.7 (12.4–20 GHz)
• 8765C: < 1.25 (DC–4 GHz), < 1.30 (4–26.5 GHz)
• 8765D: < 1.10 (DC–4 GHz), < 1.50 (4–26.5 GHz), < 1.3 (26.5–40 GHz)

Switching & Power
• Switching speed: 15 ms maximum
• Maximum power: 2 W average (switching); 100 W peak (non-switching)
• Life cycle: 5,000,000 cycles

– Key Features

• Solenoid voltage options: 5 Vdc, 10 Vdc, 15 Vdc, 24 Vdc (with operating ranges specified)
• Connector types: SMA (8765A/B), 3.5 mm (8765C), 2.4 mm or 2.92 mm (8765D)
• Control via ribbon cable with in-line connector or solder terminals
• Operating temperature: −25 °C to 75 °C
• Storage temperature: −55 °C to 85 °C

– Typical Applications

Precision attenuator control for RF/microwave test benches, system integration, signal simulation, and production test automation.