Teardown & Repair of an Agilent N9020A MXA 10Hz – 26.5GHz Spectrum Analyzer (March 2020)



In this episode Shahriar takes a look at a malfunctioning Agilent N9020A MXA. This instrument was provided by AllTest who hold the largest inventory of used and refurbished instruments. They have trusted The Signal Path to attempt a repair on the instrument and to support the educational content of this channel.
Thank you AllTest! Please visit their website for all your measurement, calibration and service needs: sales@alltest.net https://alltestchambers.net https:/alltest.
net The instrument fails RF Alignment despite the fact that all calibration signals are present and can be viewed on the unit. The front-end attenuators also appear to be fully functioning. A full sweep of the input shows that the instrument fails to make measurements between 8.
4GH – 14GHz as well as above 17GHz. The block diagram is analyzed and the likely fault is traced to a doubler circuit on the A13 RF Assembly. The teardown of the assembly along with step-by-step reverse engineering is presented.
An X-Ray of the module also reveals the hidden band-pass filter structure on the PCB. Various dies are also examined under the microscope. The A13 module is replaced with which corrects all the instrument faults and returns the unit to normal operation.
Equipment Repair, Experiments, Teardown Experiments, Repair, RF, Teardown Social Media Archives Archives Select Month March 2020  (3) February 2020  (3) November 2019  (3) September 2019  (3) August 2019  (1) July 2019  (3) April 2019  (2) March 2019  (6) January 2019  (2) November 2018  (5) September 2018  (3) August 2018  (4) July 2018  (3) May 2018  (1) April 2018  (2) February 2018  (2) December 2017  (3) November 2017  (1) October 2017  (4) September 2017  (7) July 2017  (1) June 2017  (1) May 2017  (4) March 2017  (4) February 2017  (4) January 2017  (5) October 2016  (1) September 2016  (6) March 2016  (4) January 2016  (4) December 2015  (3) November 2015  (3) September 2015  (2) August 2015  (4) July 2015  (4) June 2015  (2) May 2015  (2) April 2015  (2) February 2015  (4) January 2015  (2) December 2014  (2) November 2014  (3) October 2014  (3) September 2014  (1) August 2014  (1) July 2014  (2) March 2014  (2) August 2013  (1) July 2013  (2) March 2013  (1) February 2013  (1) January 2013  (2) December 2012  (1) November 2012  (3) October 2012  (1) September 2012  (1) July 2012  (3) June 2012  (2) February 2012  (1) October 2011  (1) September 2011  (1) August 2011  (3) June 2011  (1) May 2011  (2).

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