The Aeroflex Weinschel 10039 is a programmable attenuator designed for precise, dynamic signal level control in automated test equipment and RF/microwave systems. Operating from DC to 3.0 GHz across 50 Ω impedance, it delivers step attenuation via programmable relay-based cells, each containing a double-pole, double-throw switch selecting between minimum-loss and attenuated signal paths. Control interfaces include parallel TTL/CMOS mode for single-unit applications and SmartStep® serial bus architecture for multi-device integration into larger test systems.
Technical Specifications
• Frequency Range: DC to 3.0 GHz
• Nominal Impedance: 50 Ω
• Attenuation Control: Programmable step attenuation via relay cells
• RF Signal Path: Double-pole, double-throw relay per cell
• Construction: Microstrip circuitry with frequency-response compensation and gold-plated contact areas
• Feedthrough filters at each control terminal minimize RF leakage
• RF Connectors: SMA female (MIL-STD-39012 compatible)
• Control Connector: 14-pin 0.025 square post header on 0.1 center spacing (Amp 746285-2 or equivalent)
– Key Features
• Dual control modes: Parallel (one-bit per relay TTL control) and SmartStep® serial bus
• Built-in microcontroller-based driver with TTL/CMOS interface circuitry
• Parallel mode accepts TTL-level digital outputs or mechanical toggle switch control
• Serial bus enables daisy-chain configuration for multi-attenuator subsystems
• Flat attenuation versus frequency response across operating band
– Environmental Compliance
• Vibration: MIL-STD-202F, Method 204D Condition B
• Altitude: MIL-STD-202F, Method 105C Condition B to 50,000 ft
• Shock: MIL-STD-202F, Method 213B Condition B (10 G, 6 ms)
• Humidity: MIL-STD-202F, Method 103B
– Typical Applications
Telecommunications RF testing, radar system signal simulation, microwave component characterization, and automated test platform integration requiring dynamic attenuation control.
– Compatibility & Integration
The 10039 integrates into larger ATE frameworks via parallel digital I/O or SmartStep® serial networks, supporting both standalone and multi-unit configurations without external relay drivers.
