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The HP 8494H 18 GHz Programmable Step Attenuator offers fast, precise signal level control. It features exceptional repeatability and reliability in a wide range of frequency, attenuation and connector options. Attenuation repeatability is specified to be less than 0.03 dB 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. Specifications. Frequency Range: DC-18 GHz. Attenuation Range: 0-11 dB, 1dB steps. Maximum SWR: 1.5 to 8 GHz, 1.6 to 12.4 GHz, 1.9 to 18 GHz. Insertion Loss at 0 dB: 0.6 dB + 0.09 dB/GHz. Attenuation Accuracy dc to 12.4 GHz: ±0.3 dB (1 to 2 dB), ±0.4 dB (3 to 4 dB), ±0.5 dB (5 to 6 dB), ±0.6 dB (7 to 10 dB), ±0.7 dB (11 dB). Attenuation Accuracy dc to 18 GHz: ±0.7 dB (1 to 5 dB), ±0.8 dB (6 to 9 dB), ±0.9 dB (10 to 11 dB). Power Rating: 1 W average, 100 W peak 10 µs max. Minimum Life: 5 million cycles per section. Option 001 N(f). Option 002 SMA(f). Option 003 APC-7.
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