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Keysight (Agilent) 85685A

RF Preselector, 20Hz to 2GHz, Spectrum Analyzer
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Description
The Agilent 85685A RF preselctor is designed to operate with the Agilent 8566B and 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 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 HP-IB (IEEE-488).

Features:
  • Operates with the Agilent 8566B and 8568B spectrum analyzers
  • Reduces overloading from out-of-band signal
  • Improved system sensitivity
  • Built-in transient limiter
List of Options
010 Rack Mount Slide Kit
066 Option 066 firmware for 8566B units with firmware data < 5.5.85
068 Option 068 firmware for 8568B units with firmware data < 14.1.85
8ZE Factory Refurbished
908 Rack Flange Kit for Use without Handles
910 Additional operating and service manual
913 RAck Mount Flange Kit
915 Component Level Information and Service Guide
RC24 Extended 24 Month Warranty & 2x Calibration Service Agreement
RC36 Extended 36 Month Warranty & 3x Calibration Service Agreement
Specifications & Attributes (Spectrum Analyzers)
Form Factor
Benchtop
Frequency
20 Hz - 2 GHz

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