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Message ID: 892     Entry time: Thursday, August 05, 2021, 08:49
Author: Fernando Maldonado 
Target/No.#:  
Source:  
Station:  
Module:  
Target Oven W.O#:  
Heat Shield W.O#:  
Status: Problems/Solutions 
Subject: CANBUS snooper set up to investigate random optics turnining off 

Problem: Some devices turn off unexpectedly and sometimes without any obvious trigger. In the past, the only time this was an issue was during mass scans. Now with the automation of measurements, this is a major problem as it prevents longer parameter scans.

Thursday, August 05, 2021, 08:00: Kevin setup the CANBUS snooper by hooking it up on the magnet card loop port.

This device tracks the network so if any error happen it will be captured.

Thursday, August 05, 2021, 09:39: Test unsuccessful. No device turned off (I should be happy XD)

Thursday, August 05, 2021, 09:40: Will run the test another time

A PC was setup near the old magnet power supply (20210806_150334.jpg ). One of the software run smoothly but the other more useful one fails to connect to the usb adapter.

 


 Friday, August 06, 2021, 14:52: Fixed issue with  the usb adapter. With this, the CANBUS traffic can be store and inspected to catch any error on the communication (Annotation_2021-08-06_144737.png).

Friday, August 06, 2021, 14:53: Loggers are running. 


 Friday, August 13, 2021, 11:07: I forgot to input the feedback  from Kevin:

"33 errors out of 10,300,00 transaction seems statistically insignificant to me. "

From the devices tripped,

"Most of the tripped supplies are located on the front side of the rack, the original test stand controllers"

So maybe the issues could be

"Compatibility issues with the old and new? The newer supplies are all daisy chained, should we upgrade these to the tap boards?

 

Should the old controllers (original test stand appear to be MK supplies) be upgraded (do we have enough)?"

Attachment 1: Annotation_2021-08-06_144737.png  184 kB  Uploaded Friday, August 06, 2021, 15:54  | Show | Hide all
Attachment 2: 20210806_150334.jpg  494 kB  Uploaded Friday, August 06, 2021, 16:06  | Show | Hide all
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