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vetoshield:tubes [2012/06/27 08:50] – [Preamp Cards] jeffvetoshield:tubes [2014/04/10 10:45] (current) – [Tube Repair, High and Low Voltage, Preamp cards] jeff
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 ===== Tube Repair, High and Low Voltage, Preamp cards ===== ===== Tube Repair, High and Low Voltage, Preamp cards =====
 +
 +====Tube Geometrical Specs=====
 +
 +{{:vetoshield:tufts_module.pdf|}}
 +
 +\\
 ====Preamp Cards==== ====Preamp Cards====
  
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 {{:vetoshield:broken_preamp_cards_updated_jul_28_2011_.xls|}} {{:vetoshield:broken_preamp_cards_updated_jul_28_2011_.xls|}}
  
 +\\
 ===Channel Schematic=== ===Channel Schematic===
 The following is a schematic of a SINGLE CHANNEL on a preamp card. Each preamp has two channels. The LS221 and SN75183 chips are each dual packaged so there is only one of each per card. The following is a schematic of a SINGLE CHANNEL on a preamp card. Each preamp has two channels. The LS221 and SN75183 chips are each dual packaged so there is only one of each per card.
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 {{:vetoshield:vetoshield_preamp_schematic.jpg?900}} {{:vetoshield:vetoshield_preamp_schematic.jpg?900}}
  
 +
 +===Low Voltage Connector===
 The P ground is the applied ground from the 15 pin low voltage connector. The S ground are the traces that run to the screw holes on the outside of the card and would normally be connected to the aluminum on the shield. The P ground is the applied ground from the 15 pin low voltage connector. The S ground are the traces that run to the screw holes on the outside of the card and would normally be connected to the aluminum on the shield.
  
-When looking at the preamp card with the lv connector on the top the pinout is+When looking at the preamp card with the 15 pin low voltage connector on the top the pinout is
  
 +   ____card end_____
 +  | SSTTTTTGGGGGG77 |
 +  |                 |
  
 +where S and T represent +5S and +5T respectively, G represents ground and 7 represents -7
  
-==Datasheets for the major components==+\\ 
 +===Charge Injection Test=== 
 +Scope screenshot below is of test with 250mV negative going pulse at 200khz repetition rate\\ 
 +Top trace is nput to TEST pin\\ 
 +Second trace shows signal at pin 3 of LM311\\ 
 +Third trace is +OUT\\ 
 +Fourth trace is -OUT\\ 
 +{{:vetodaq:vetopreamp_130225b.png?700}} 
 + 
 +\\ 
 +===Datasheets for the major components===
  
 {{:vetoshield:mpsh11_datasheet.pdf|}} {{:vetoshield:mpsh11_datasheet.pdf|}}
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 {{:vetoshield:sn75183_datasheet.pdf|}} {{:vetoshield:sn75183_datasheet.pdf|}}
 +====Low Voltage Distribution System====
 +
 +Below is a schematic of the low voltage distribution system for a given crate. 
 +
 +{{:vetoshield:low_voltage_distribution.jpg?1000|}}
 +
 +The original schematic file which can be edited is posted in the vetoshield ELOG https://fireplace.soudan.umn.edu:8082/Shield/ in entry # 486.
 +
 +===Breakout Box===
 +
 +Below is a more detailed representation of the breakout boxes being used
 +
 +{{:vetoshield:low_voltage_breakout_box.jpg?500|}}
 +
 +and some photos
 +
 +{{:vetoshield:bob1.jpg?500|}}{{:vetoshield:bob3.jpg?500|}}{{:vetoshield:bob4.jpg?500|}}{{:vetoshield:bob5.jpg?500|}}{{:vetoshield:bob6.jpg?500|}}
 +
 +
  
  
vetoshield/tubes.1340805051.txt.gz · Last modified: 2012/06/27 08:50 by jeff

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