The Agilent/HP 85685A RF preselector is designed to operate with the Agilent/HP 8566B and Agilent/HP 8568B spectrum analyzers. The RF preselector adds tracking filters to reduce overloading from out-of-band signal and preamplifiers for improved system sensitivity over the 20 Hz to 2 GHz frequency range. The Agilent/HP 85685A RF preselector has two input, 20 Hz to 50 MHz and 20 MHz to 2 GHz. There is also a bypass mode which is DC to 18 GHz. Input 1 has a built-in transient limiter for protection from transients generated by line impedance stabilization networks (LISN). The preselector is fully programmable over the GPIB.
Key Specifications:
• Operates with the 8566B and 8568B spectrum
analyzers
• Reduces overloading from out-of-band signal
• Improved system sensitivity
• Built-in transient limiter
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