|
40m
QIL
Cryo_Lab
CTN
SUS_Lab
TCS_Lab
OMC_Lab
CRIME_Lab
FEA
ENG_Labs
OptContFac
Mariner
WBEEShop
|
| PSL |
Not logged in |
 |
|
|
 Thu Sep 5 19:32:02 2019, anchal, DailyProgress, PMC, North PMC might be cause of 500Hz bump 
|
 Mon Sep 9 16:31:34 2019, anchal, DailyProgress, PMC, North PMC open loop investigation
| |
Tue Sep 10 17:13:51 2019, anchal, DailyProgress, PMC, North PMC Servo Card Upgraded
|
|
|
Message ID: 2420
Entry time: Mon Sep 9 16:31:34 2019
In reply to: 2417
Reply to this: 2421
|
| Author: |
anchal |
| Type: |
DailyProgress |
| Category: |
PMC |
| Subject: |
North PMC open loop investigation |
|
|
I opened the NPMC servo box and ran TF analysis up to all test points and compared with their zero model. Everything looks normal in these transfer functions.
So the oscillations might be happening due to closing of the loop. I'll take a measurement of total open-loop transfer function next with the PDs and PZT in the loop.
Updated schematics and Zero Model
Code and Data |
|
|