40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log  Not logged in ELOG logo
Entry  Mon Sep 27 00:33:50 2010, rana, Update, PSL, High Voltage Driver added to TTFSS -> NPRO 
    Reply  Fri Oct 1 21:34:14 2010, rana, tara, Update, PSL, High Voltage Driver added to TTFSS -> NPRO NPROTF.png2010_10_01.png
       Reply  Mon Oct 4 06:47:46 2010, rana, tara, Update, PSL, High Voltage Driver added to TTFSS -> NPRO 
Message ID: 3641     Entry time: Mon Oct 4 06:47:46 2010     In reply to: 3640
Author: rana, tara 
Type: Update 
Category: PSL 
Subject: High Voltage Driver added to TTFSS -> NPRO 

Inside the FSS box, the FAST path has a ~10 Hz pole made up from the 15k resistor and the 1 uF cap before the output connector.

This should be moved over to the output of the driver to make the driver happy - without yet measuring the high frequency response,

it looks like to me that its becoming unhappy with the purely capacitive load of the NPRO's PZT. This will require a little surgery inside

the FSS box, but its probably justified now that we know the Thorlabs box isn't completely horrible.

 

ELOG V3.1.3-