Difference between revisions of "List of Board Changes"
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| Line 4: | Line 4: | ||
*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)