{"id":1609,"date":"2015-12-18T13:19:41","date_gmt":"2015-12-18T21:19:41","guid":{"rendered":"http:\/\/www.rbdinstruments.com\/blog\/?p=1609"},"modified":"2021-05-17T12:19:57","modified_gmt":"2021-05-17T19:19:57","slug":"96a-vf-preamp-adjustment","status":"publish","type":"post","link":"https:\/\/www.rbdinstruments.com\/blog\/96a-vf-preamp-adjustment\/","title":{"rendered":"96A V\/F preamp adjustment summary"},"content":{"rendered":"

96A V\/F preamp adjustment summary<\/h2>\n

This post explains how to calibrate your 96A V\/F amplifier that is\u00a0 used on PHI Auger and XPS surface analysis systems.\u00a0\u00a0 You will need a voltmeter, an oscilloscope, a 30 Meg ohm test resistor and two clip leads.<\/p>\n

\u00a096A V\/F preamp Calibration procedure<\/strong><\/p>\n

    \n
  1. Turn off the 32-100 electron multiplier supply (or the card rack power)<\/li>\n
  2. Remove the HV POS In, POS out and COL cables from the 96A V\/F preamp<\/li>\n
  3. Remove the 96A V\/F preamp cover.<\/li>\n
  4. Turn ON the 32-100 electron multiplier supply (or the card rack power)<\/li>\n
  5. Measure voltage between L1 and L2, should be 28 to 30V DC<\/li>\n
  6. Adjust R23 for 0V betweenTP2 and HV POS in.<\/li>\n
  7. Adjust R18 for zero Hz on Frequency output<\/li>\n
  8. Adjust R37 for 0V on Analog output<\/li>\n
  9. Connect 30 Meg ohm load resistor between L2 and the COL resistor<\/li>\n
  10. Adjust R8 for 1MHz on the frequency output<\/li>\n
  11. Adjust R28 for 10V on the Analog output<\/li>\n
  12. Remove the 30 Meg ohm load resistor<\/li>\n
  13. Adjust R18 for 100 Hz on the Frequency output<\/li>\n
  14. AdjsutR37 for .1V on the Analog output<\/li>\n
  15. Repeat steps 5 through 10.<\/li>\n
  16. Turn off the 32-100 or card rack power.<\/li>\n
  17. Replace the cover on the 96A V\/F preamp.<\/li>\n
  18. Reconnect the HV POS In, POS out and COL cables to the 96A V\/F preamp<\/li>\n<\/ol>\n
    \"96A

    96A V\/F preamp adjustment summary This post explains how to calibrate your 96A V\/F amplifier that is\u00a0 used on PHI Auger and XPS surface analysis systems.\u00a0\u00a0 You will need a voltmeter, an oscilloscope, a 30 Meg ohm test resistor and … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":1610,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[162],"tags":[208],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2015\/12\/96A-potentiometer-summary.jpg?fit=890%2C661&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p2DEXo-pX","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":1228,"url":"https:\/\/www.rbdinstruments.com\/blog\/test-procedure-phi-vf-preamplifiers\/","url_meta":{"origin":1609,"position":0},"title":"Test procedure for PHI V\/F preamplifiers","author":"Randy","date":"October 20, 2014","format":false,"excerpt":"Overview: Most of the older PHI AES systems use a voltage to frequency converter (V\/F) to convert the electron multiplier auger signal output from a small current into a frequency so that the computer can count the signal. At the time these systems were designed, this was a more cost\u2026","rel":"","context":"In "General Optics and Vacuum"","block_context":{"text":"General Optics and Vacuum","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/general-optics-and-vacuum\/"},"img":{"alt_text":"preamp-96A-col-and-L2","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2014\/10\/preamp-96A-col-and-L2.png?fit=417%2C371&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":3546,"url":"https:\/\/www.rbdinstruments.com\/blog\/augerscan-electron-multiplier-voltage-logic\/","url_meta":{"origin":1609,"position":1},"title":"AugerScan \u2013 Electron Multiplier Voltage Logic","author":"Randy","date":"April 8, 2022","format":false,"excerpt":"Blog post that explains how the detection mode and electron multiplier voltage are set automatically by AugerScan on older PHI AES and XPS systems.","rel":"","context":"In "General Optics and Vacuum"","block_context":{"text":"General Optics and Vacuum","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/general-optics-and-vacuum\/"},"img":{"alt_text":"V\/F setpoint for AES","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2022\/04\/survey-setting-1.jpg?fit=697%2C483&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":3199,"url":"https:\/\/www.rbdinstruments.com\/blog\/72-100-electron-multiplier-supply-notes\/","url_meta":{"origin":1609,"position":2},"title":"72-100 Electron Multiplier Supply Notes","author":"Randy","date":"April 2, 2021","format":false,"excerpt":"Notes on to test and repair the 72-100 electron multiplier supply used on older PHI Auger systems.","rel":"","context":"In "General Optics and Vacuum"","block_context":{"text":"General Optics and Vacuum","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/general-optics-and-vacuum\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2021\/04\/Extended-72-100-board.jpg?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2021\/04\/Extended-72-100-board.jpg?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2021\/04\/Extended-72-100-board.jpg?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2021\/04\/Extended-72-100-board.jpg?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":1779,"url":"https:\/\/www.rbdinstruments.com\/blog\/72-100-voltage\/","url_meta":{"origin":1609,"position":3},"title":"72-100 voltage","author":"Randy","date":"June 2, 2016","format":false,"excerpt":"I recently encountered an unusual problem on two different 660 scanning auger systems within a period of a few months where the 72-100 multiplier voltage would drop off after a period of time. On one system the 97 SED preamp would fail after a few minutes of warm up time,\u2026","rel":"","context":"In "Operation and Calibration Procedures"","block_context":{"text":"Operation and Calibration Procedures","link":"https:\/\/www.rbdinstruments.com\/blog\/category\/operation-and-calibration-procedures\/"},"img":{"alt_text":"72-100 mother board","src":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2016\/06\/72-100-mother-board.jpg?fit=774%2C1032&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2016\/06\/72-100-mother-board.jpg?fit=774%2C1032&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2016\/06\/72-100-mother-board.jpg?fit=774%2C1032&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":860,"url":"https:\/\/www.rbdinstruments.com\/blog\/how-to-test-a-97-sed-preamplifier\/","url_meta":{"origin":1609,"position":4},"title":"How to test a 97 SED preamplifier","author":"Randy","date":"November 8, 2013","format":false,"excerpt":"Older PHI scanning auger systems use the model 97 SED preamplifier to obtain secondary electron images. 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