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Entry  Tue Jun 25 22:57:01 2013, Charles, Update, ISS, Proposed ISS for CTN Experiment Screen_Shot_2013-06-25_at_10.24.07_PM.pngTF_Mag-CTNServo_v2.pngInput_Noise-Freq-CTNServo_v2.png
    Reply  Wed Jul 3 20:51:43 2013, Charles, Update, ISS, Proposed ISS for CTN Experiment - Altium Schematic CTNServo_v2_abbott-switch.pdf
Message ID: 8799     Entry time: Wed Jul 3 20:51:43 2013     In reply to: 8748
Author: Charles 
Type: Update 
Category: ISS 
Subject: Proposed ISS for CTN Experiment - Altium Schematic 

 After familiarizing myself with Altium, I drew up the attached schematic for the ISS to be used in the CTN experiment. The filename includes 'abbott-switch' as I am using an Altium component (the switch, in particular), that he created. The MAX333A actually has 20 pins on a single component, but the distributed component that he created is useful for drawing uncluttered schematics. I won't be using all of the pins on this switch, but for completeness, I have included the 3rd and 4th portion of the full component in the upper right hand corner.

Currently, the schematic includes the voltage reference (AD586), a LP filter for the reference signal, the differential amplifier stage to obtain the error signal and then finally all of the filter stages. The schematic does not include the RMS detection and subsequent triggering of each filter stage. The TRIGGER 1 signal is a user input (essentially the on button) while the TRIGGER 2 signal will flip the second switch when the RMS noise has decreased sufficiently after the first filter stage has been turned on. 

PCB layouts will be done once I understand that part of Altium 

 

NOTE THAT I HAVE DELETED ELOG 8798 AS IT WAS A DUPLICATE OF THIS ONE.

I wanted this elog to be in reply to a previous one and I couldn't figure out how to change that in an elog I already submitted.

 

 

 

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