Difference between revisions of "List of Board Changes"

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*Individual channel 14 was missing C2. We placed the component on ourselves.
 
*Individual channel 14 was missing C2. We placed the component on ourselves.
 +
*There was a wrong resistor where the 100k resistor should be. This was replaced.
 +
*Changed the 35.7k resistor in the voltage reference to 130k in order to increase the current on each transistor leg.
 +
*The voltage regulator for AMPREF had the wrong pin out in our drawings. We rotated it so that VCC_VRef moved to where AMPREF was and a wire attaches from AMPREF to where VCC_VRef was.
 +
  
 
= Board 2 =  
 
= Board 2 =  
  
 
*Individual channel 15 had 2 RBi's instead of an RBi and a CBi. We replaced the wrong RBi with the correct CBi.
 
*Individual channel 15 had 2 RBi's instead of an RBi and a CBi. We replaced the wrong RBi with the correct CBi.
 +
*The 100k resistor in the summer part of the voltage reference was actually a 442k resistor.
 +
*The voltage regulator for AMPREF had the wrong pin out in our drawings. We rotated it so that VCC_VRef moved to where AMPREF was and a wire attaches from AMPREF to where VCC_VRef was.
 +
*Changed the 35.7k resistor in the voltage reference to 130k in order to increase the current on each transistor leg.
  
 
= Board 3 =
 
= Board 3 =

Revision as of 16:30, 7 May 2012

Here is a list of changes made to the boards received from Sierra Circuits.

Board 1

  • Individual channel 14 was missing C2. We placed the component on ourselves.
  • There was a wrong resistor where the 100k resistor should be. This was replaced.
  • Changed the 35.7k resistor in the voltage reference to 130k in order to increase the current on each transistor leg.
  • The voltage regulator for AMPREF had the wrong pin out in our drawings. We rotated it so that VCC_VRef moved to where AMPREF was and a wire attaches from AMPREF to where VCC_VRef was.


Board 2

  • Individual channel 15 had 2 RBi's instead of an RBi and a CBi. We replaced the wrong RBi with the correct CBi.
  • The 100k resistor in the summer part of the voltage reference was actually a 442k resistor.
  • The voltage regulator for AMPREF had the wrong pin out in our drawings. We rotated it so that VCC_VRef moved to where AMPREF was and a wire attaches from AMPREF to where VCC_VRef was.
  • Changed the 35.7k resistor in the voltage reference to 130k in order to increase the current on each transistor leg.

Board 3

  • Individual channels 11 and 15 had 2 RBi's instead of an RBi and a CBi. We replaced the wrong RBi with the correct CBi.
  • The 100k resistor in the summer part of the voltage reference was actually a 442k resistor.
  • The voltage regulator for AMPREF had the wrong pin out in our drawings. We rotated it so that VCC_VRef moved to where AMPREF was and a wire attaches from AMPREF to where VCC_VRef was.
  • Changed the 35.7k resistor in the voltage reference to 130k in order to increase the current on each transistor leg.
  • Changed C2 from 10nF to 1nF (this was later changed back to 10nF)