Weinschel 940-114-33

The Weinschel 940-114-33 is a continuously variable coaxial attenuator engineered for precise signal level control in RF and microwave systems operating from DC to 2.0 GHz. This instrument delivers 114 dB of incremental attenuation with a calibrated dial in approximately linear 1 dB increments, starting from 6 dB minimum insertion loss. The attenuator maintains exceptional stability across temperature and power variations, making it suitable for laboratory measurement, system characterization, and field testing applications where accurate power reduction and impedance matching are critical.

– Technical Specifications

• Attenuation Range: 114 dB incremental; 6 dB minimum insertion loss
• Frequency Range: DC to 2.0 GHz
• Nominal Impedance: 50 Ω
• Dial Calibration: Approximately linear, 1 dB increments; ~270° rotation for full range
• Accuracy: ±0.25 dB or 0.4% (whichever is greater) at 1 GHz
• Maximum VSWR: 1.50 (DC to 1 GHz); 1.60 (1 GHz to 2 GHz)
• Power Coefficient: < 0.005 dB/dB/watt
• Temperature Coefficient: < 0.001 dB/dB/°C
• Phase Shift with Attenuation Change: 1° per dB × f(GHz) maximum
• Operating Temperature: 0°C to +85°C
• Storage Temperature: -55°C to +125°C
• Average Power Rating: 5 watts at 40°C ambient, derated linearly to 0 watts at 85°C
• Peak Power Rating: 500 watts (5 µsec pulse, 0.5% duty cycle)
• Cycle Life: 10,000 cycles minimum (full rotation sweeps)
• Weight: 1.570 kg (3 lbs, 8 oz)

– Key Features

• Type N (Female) or SMA connectors with MIL-STD-348 and MIL-C-39012 compatibility
• Aluminum body with stainless steel components for environmental durability
• Frequency sensitivity: 0.1 × A × (F – Fd) dB
• Direct-reading dial for immediate attenuation verification
• Construction meets MIL-A-24215 environmental standards

– Typical Applications

• RF and microwave system signal level control
• Power measurement and calibration
• System impedance matching and optimization
• Laboratory and field testing environments

– Compatibility & Integration

Connectors mate non-destructively per MIL-STD-348 specifications. The 50 Ω nominal impedance integrates with standard RF test equipment and transmission line systems.