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vetoshield:tubes [2013/06/20 16:49] – [Preamp Cards] added forgotten scope screenshot wgilbertvetoshield: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====
-_+
 ===Broken Cards=== ===Broken Cards===
 The attached excel file is a list of broken cards that have been looked at. With most of these cards at least one bad component or connection had been identified. Bad components have also been marked with tape. The cards are in  a box labled "PREAMPS TO BE FIXED" The attached excel file is a list of broken cards that have been looked at. With most of these cards at least one bad component or connection had been identified. Bad components have also been marked with tape. The cards are in  a box labled "PREAMPS TO BE FIXED"
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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}}
  
-\\ 
-\\ 
-===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}} 
  
-\\  +===Low Voltage Connector===
-===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.
  
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 where S and T represent +5S and +5T respectively, G represents ground and 7 represents -7 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|}}
vetoshield/tubes.1371764963.txt.gz · Last modified: 2013/06/20 16:49 by wgilbert

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