The Marconi IFR Aeroflex 6911 is a precision RF and microwave power sensor engineered for accurate measurement across 10 MHz to 20 GHz. It delivers a chopped DC analog output representing RF power, with 50 dB dynamic range spanning -30 dBm to +20 dBm. The sensor integrates a monolithic semiconductor thermocouple element and connects via APC7 connector to Marconi power meters and microwave test sets. Compact and lightweight at 140 g, it operates in both benchtop and field environments without external mechanical support.
Technical Specifications
Frequency Range:
• 10 MHz to 20 GHz
Power Measurement Range:
• -30 dBm (1 µW) to +20 dBm (100 mW)
• Maximum RF input: +24.8 dBm average, +25 dBm typical
• Peak power: 15 W for 2 µs pulses
RF Connector:
• APC7, 50 Ω impedance
VSWR Across Band:
• 10 MHz–30 MHz: 1.25:1
• 30 MHz–2 GHz: 1.1:1
• 2 GHz–16 GHz: 1.8:1
• 16 GHz–18 GHz: 1.28:1
• 18 GHz–20 GHz: 1.4:1 typical
Measurement Accuracy:
• ±0.5% at 25 °C (between +10 dBm and +20 dBm)
• Accuracy improves by factor of 10 for each lower range
• ±0.5% at 100 mW, decreasing 0.005% per mW
Short-Term Drift:
• 10 nW typical (1 hour after 24-hour warm-up at constant temperature)
Output Signal:
• High-level chopped DC analog to minimize RF interference susceptibility
• Multiway connector for sensor cable to power meter
Physical:
• Length: 87 mm (including connectors)
• Diameter: 33.5 mm
• Weight: 140 g
• RF sensing assembly is field replaceable
– Key Features
• Linearity factor provided and programmable into compatible meters for non-linearity compensation at higher power levels
• Calibration factor and frequency-specific data chart included with each unit
• Rugged, compact design suitable for field deployment
– Compatibility & Integration
• Marconi Instruments 6950 analog and 6960 series digital power meters
• Marconi 6200 Series Microwave Test Sets
• Marconi 6970 RF Power Meter, CPM 20, and CPM 46 Counter Power Meters
