Attenuation repeatability is specified to be less than 0.03 dB (0.05 dB , 18-26.5 GHz) for 5 million cycles per section. This assures low measurement uncertainty and high user confidence when designed into automatic test systems. Electromechanical step attenuators offer low SWR, low insertion loss and high accuracy required by high-performance test and measurement equipment. 

Precision plated leaf-spring contacts remove attenuator sections (miniature tantalum nitride thin-film T-pads on sapphire and alumina substrates) from the signal path. Unique process controls and material selection ensure unmatched life and contact repeatability. Miniature drive solenoids in the programmable models keep switching time, including settling, down to less than 20 milliseconds. Once switched, strong permanent magnets hold the solenoids (and attenuation value) in place. Current interrupts automatically disconnect solenoid current, simplifying driver circuit design and minimizing heat dissipation. Programming is done through a 12 -pin Viking socket or optional ribbon cables with DIP plugs. 

With an HP 11713A attenuator driver, 87130A attenuator driver, or an HP 70611A driver for MMS-based systems, automatic drive control is easy using the Hewlett-Packard Interface Bus (HP-IB) automated system. 

Quickly and conveniently connect 1 dB step and 10 dB step attenuators together to achieve greater dynamic range with 1 dB steps. The 11716 A/B /C interconnect kits contain a rigid RF cable, mounting bracket, and necessary hardware to connect any pair of HP 8494/95/96/97 attenuators in series

・Agilent / HP 8495A 為 Manual Step Attenuator（手動階梯式射頻衰減器）
・屬於 8494/95/96/97 高精度 Step Attenuator 系列
・提供快速且精準的 Signal Level Control
・適用於高性能 RF / 微波量測與自動測試系統

・DC to 4 GHz
・系列版本涵蓋 DC–4 GHz / DC–18 GHz / DC–26.5 GHz
・適用於寬頻 RF 測試架構

・0 – 70 dB
・10 dB Steps（固定步進衰減）
・高穩定手動切換設計

・< 0.03 dB（DC – 18 GHz）
・< 0.05 dB（18 – 26.5 GHz 系列型號）
・After 5 Million Cycles per Section

✔ 確保極低 Measurement Uncertainty
✔ 提供高信賴度於 Automatic Test Systems

・Precision Plated Leaf-Spring Contacts
・Miniature Tantalum Nitride Thin-Film T-Pads
・Sapphire & Alumina Substrates
・優異接觸穩定性與壽命表現

・Minimum Life：> 5 Million Cycles per Section

✔ 透過 HP-IB（Hewlett-Packard Interface Bus）整合自動化系統
✔ 支援 12-Pin Viking Socket 或 Ribbon Cable Programming
✔ 可與 1 dB 與 10 dB Step Attenuators 串接擴展動態範圍
✔ 11716 A/B/C Interconnect Kits 支援系列串接

・8495A-001 – N Female
・8495A-002 – SMA Female
・8495A-003 – APC-7
・8495A-004 – 3.5 mm

・AI 伺服器 / HPC 射頻模組功率控制
・5G Sub-6GHz / FR2 功率校準
・6G 高頻與毫米波研究應用
・LTE / NB-IoT / IoT 通訊模組測試
・WiFi 6 / WiFi 6E / WiFi 7 RF 驗證
・Signal Generator 輸出功率控制
・Spectrum Analyzer / VNA 前端保護
・研發驗證 / QA / 產線 ATE 測試系統

Agilent 8495A datasheet: 

Attenuation repeatability is specified to be less than 0.03 dB (0.05 dB , 18-26.5 GHz) for 5 million cycles per section. This assures low measurement uncertainty and high user confidence when designed into automatic test systems. Electromechanical step attenuators offer low SWR, low insertion loss and high accuracy required by high-performance test and measurement equipment. Precision plated leaf-spring contacts remove attenuator sections (miniature tantalum nitride thin-film T-pads on sapphire and alumina substrates) from the signal path. Unique process controls and material selection ensure unmatched life and contact repeatability. Miniature drive solenoids in the programmable models keep switching time, including settling, down to less than 20 milliseconds. Once switched, strong permanent magnets hold the solenoids (and attenuation value) in place. Current interrupts automatically disconnect solenoid current, simplifying driver circuit design and minimizing heat dissipation. Programming is done through a 12 -pin Viking socket or optional ribbon cables with DIP plugs. With an HP 11713A attenuator driver, 87130A attenuator driver, or an HP 70611A driver for MMS-based systems, automatic drive control is easy using the Hewlett-Packard Interface Bus (HP-IB) automated system. Quickly and conveniently connect 1 dB step and 10 dB step attenuators together to achieve greater dynamic range with 1 dB steps. The 11716 A/B /C interconnect kits contain a rigid RF cable, mounting bracket, and necessary hardware to connect any pair of HP 8494/95/96/97 attenuators in series

• Datasheet PD1534476235562