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Entry  Fri Mar 19 19:15:13 2021, Jon, Update, CDS, c1auxey assembly 
    Reply  Thu Mar 25 12:11:53 2021, Yehonathan, Update, CDS, c1auxey assembly 20210325_115500_HDR.jpg20210325_123033.jpg
       Reply  Thu Mar 25 14:16:33 2021, gautam, Update, CDS, c1auxey assembly 
       Reply  Tue Mar 30 17:27:04 2021, Yehonathan, Update, CDS, c1auxey assembly 
          Reply  Wed Aug 25 11:48:48 2021, Yehonathan, Update, CDS, c1auxey assembly 
             Reply  Mon Sep 13 14:32:25 2021, Yehonathan, Update, CDS, c1auxey assembly ETMX_OSEMS_Noise.png
                Reply  Wed Sep 15 11:27:50 2021, Yehonathan, Update, CDS, c1auxey assembly c1auxex_Grounding_OSEM_comparison1.pdfc1auxex_Grounding_OSEM_comparison2.pdf
       Reply  Thu Apr 15 17:24:08 2021, Jon, Update, CDS, Updated c1auxey wiring plan C1AUXEY_Chassis_Feedthroughs_-_By_Connector.pdf
          Reply  Mon Apr 19 21:54:55 2021, Yehonathan, Update, CDS, Updated c1auxey wiring plan 
             Reply  Wed Apr 28 18:56:57 2021, Yehonathan, Jon, Update, CDS, Updated c1auxey wiring plan 
                Reply  Thu Apr 29 16:35:51 2021, Yehonathan, Update, CDS, Updated c1auxey wiring plan 
                   Reply  Thu Apr 29 19:55:45 2021, Yehonathan, Update, CDS, Updated c1auxey wiring plan 
                      Reply  Fri Apr 30 19:18:51 2021, Yehonathan, Jon, Update, CDS, Updated c1auxey wiring plan 
                         Reply  Mon May 3 20:36:46 2021, Yehonathan, Jon, Update, CDS, Updated c1auxey wiring plan 
                            Reply  Sun May 23 18:28:54 2021, Jon, Update, CDS, Opto-isolator for c1auxey 
                               Reply  Fri May 28 10:54:59 2021, Jon, Update, CDS, Opto-isolator for c1auxey optoisolator.jpeg
                                  Reply  Thu Jun 3 17:15:17 2021, Yehonathan, Update, CDS, Opto-isolator for c1auxey Optical_Isolator_NPN_Input.pngOptical_Isolator_NPN_Output.png
                                     Reply  Thu Jun 3 22:08:00 2021, Koji, Update, CDS, Opto-isolator for c1auxey 
                                        Reply  Fri Jun 4 14:49:23 2021, Yehonathan, Update, CDS, Opto-isolator for c1auxey Optical_isolator_Wiring.pdf
                                           Reply  Fri Jun 4 17:46:25 2021, unYehonathan, Update, CDS, Opto-isolator for c1auxey 20210604_173420.jpg
                                              Reply  Sun Jun 6 16:33:47 2021, Jon, Update, CDS, BI channels on c1auxey 
                                                 Reply  Mon Jun 7 13:14:20 2021, Yehonathan, Update, CDS, BI channels on c1auxey 
                                                    Reply  Tue Jun 8 11:54:39 2021, Yehonathan, Update, CDS, BI channels on c1auxey 
                                           Reply  Sun Jun 6 03:02:14 2021, Koji, Update, CDS, Opto-isolator for c1auxey 
                                              Reply  Sun Jun 6 12:15:16 2021, Jon, Update, CDS, Opto-isolator for c1auxey 
                                              Reply  Sun Jun 6 15:59:51 2021, Yehonathan, Update, CDS, Opto-isolator for c1auxey Optical_isolator_Wiring.pdf
                                                 Reply  Mon Jun 14 15:31:30 2021, Yehonathan, Update, CDS, Opto-isolator for c1auxey Optical_isolator_Wiring.pdf
                                                    Reply  Tue Jun 15 21:48:55 2021, Koji, Update, CDS, Opto-isolator for c1auxey Acromag_RTS_BI_config.jpg
                                                       Reply  Wed Jun 16 17:24:29 2021, Yehonathan, Update, CDS, Opto-isolator for c1auxey Optical_isolator_Wiring.pdf
                                                          Reply  Wed Jun 16 20:32:39 2021, Yehonathan, Update, CDS, Opto-isolator for c1auxey 
                                                             Reply  Fri Jul 9 18:35:32 2021, Yehonathan, Update, CDS, Opto-isolator for c1auxey 
                                                                Reply  Mon Jul 12 18:06:25 2021, Yehonathan, Update, CDS, Opto-isolator for c1auxey 
                                                                   Reply  Wed Jul 28 12:47:52 2021, Yehonathan, Update, CDS, Opto-isolator for c1auxey SUS-ETMY_SparePDMon0_NoRef.pngSUS-ETMY_SparePDMon0_Ref_WithGND.pngDifferentialOutputTest.png
                                                                      Reply  Wed Aug 11 12:06:40 2021, Yehonathan, Update, CDS, Opto-isolator for c1auxey SUS-ETMY_SparePDMon0_2.png
Message ID: 16114     Entry time: Mon May 3 20:36:46 2021     In reply to: 16107     Reply to this: 16154
Author: Yehonathan, Jon 
Type: Update 
Category: CDS 
Subject: Updated c1auxey wiring plan 

It seemed like the BIO channels were not working, both the inputs and the outputs. The inputs were working on the windows machine though. That is, when we shorted the BIO channel to the return, or put 0V on it, we could see the LED turn on on the I/O testing screen and when we ramped up the voltage above 3 the LED turned off. This is the expected behavior from a sinking digital input. However, the EPICs caget didn't show any change. All the channels were stuck on Disabled.

We checked the digital outputs by connecting the channels to a fluke. Initially, the fluke showed 13V. We tried to toggle the digital output channels with caput and that didn't work. We checked the outputs with the windows software. For that, we needed to stop the Modbus. To our surprise, the windows software was not able to flip the channels either. We realized that this BIO Acromag unit is probably defective. We replaced it with a different unit and put a warning sticker on the defective unit. Now, the digital outputs were working as expected. When we turned them on the voltage output dropped to 0V. We checked the channels with the EPICs software. We realized that these channels were locked with the closed loop definition. We turned on the channels tied to these output channels (watchdog and toggles) and it worked. The output channels can be flipped with the EPICs software. We checked all the digital output channels and fixed some wiring issues along the way.

The digital input channels were still not working. This is a software issue that we will have to deal with later.

(Yehonathan) Rana noticed that the BNC leads on the chassis front panel didn't have isolation on them so I redid them with shrinking tubes.

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