Hub SN-25 Trailer Sheet

25 MAR 2020
	- Begin work on Hub SN25 per instructions at /hub/hardware/details/Hub_Inventory_Status_Final_Assembly/hub_msu_final_assembly_prod_only_print.txt
		- Check GND/ESD continuity
		- Verify power supply resistances to GND
		- Preliminary mechanical work - mounting blocks, removing runners, etc.
		- Begin component R&R.

01 APR 2020
	- Completed final assembly of Hub SN25:
		- Work conformed to given instructions.
		- Installed RC filter components on MGT_AVCC, MGT_AVTT, and Fan_1V8 supplies.
		- Installed discrete power wires.
		- Installed light pipes and front panel.
		- Installed IPMC module #135
		- Powered on and configured DC/DC converters.
		- Programmed with safe/foundation firmware.
		- Installed minipods.
		- Installed MPOs.
		- Installed FPGA heat sink.
		- Installed fiber ribbons and clipped to side of heat sink.
		- Verified 25MHz, 40MHz, and 320MHz clocks with oscilloscope:
			PLL	Free Run  Hi-Lock  Lo-Lock
			------	--------  -------  -------
			40MHz	 40.09	  40.0843  40.0735
		       320MHz	320.0	  40.0820  40.0760


		- Final voltage measurements as follows:
	  
    		 Power Bus:      FPGA     MGT     MGT    Swch    Bulk     Fan    Bulk
       		                 Core    AVCC    AVTT     1V2     1V8     1V8     3V3
                       	         ----    ----    ----    ----    ----    ----    ----
       		   Address:       40      41      42      43      44      45      46
         	     Volts:     0.95     1.00    1.20   1.19    1.79    1.82     3.307
	              Amps:     1.19     0.00    0.06   1.81    0.62   12.31     1.562
	       Fluke Volts:     0.952    0.999   1.203  1.200   1.799   1.793    3.313

		- Removed IPMC bypass (yellow wire) after testing. IPMC module now has direct control of ISO_12V supply.

- Unit has been placed in the storage cabinet to wait for its turn in the 14SS.
	

08 MAY 2020
	- Updated this Hub's IPMC firmware to latest version.

	
05 AUG 2020
- See
  l1calo/hub/hardware/details/Hub_Inventory_Status_Final_Assembly/FluxProblemOnHubs.txt 
  for details.
  
  This note is to confirm that this Hub has been cleaned with G3 flux remover.
  
  
10 SEP 2020
- This note is to confirm that this hub has been through the component replacement process
  described at the bottom of the file at the above link.  

24 SEP 2020
- This Hub has been mated with ROD V4 SN10.

11 MAY 2021
- This is a note to confirm that the board has been through the fiber ribbon replacement. See hub/hardware/details/Hub_Inventory_Status_Final_Assembly/Fiber%20Ribbon%20Problem/00_Hub_Fiber_Ribbon_Issue.txt for details.