... | ... | @@ -27,8 +27,9 @@ FMC slot 2 and FMC TDC in FMC slot 1 |
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*Conclusions:**
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\- big heatsink gives very little temperature drop (1 degC can be
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considered measurement error)
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\- small heatsinks glued on the chips give improvement of 8 degrees C
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considered measurement error). See the section with thermal camera
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measurements for details.
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\- small heatsinks glued on the chips give improvement of 8 degrees C.
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## Detailed temperature measurements on different platforms:
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... | ... | @@ -49,7 +50,7 @@ degree temperature change over 1 minute) was used for the statistics. |
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### **Data:**
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*Wiener 21-slot VME64x crate, fans at 1200 rpm:**
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*Wiener 21-slot VME64x crate, fans at 1200 rpm (minimum speed):**
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Slots 4-10:
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| **Slot/FMC** | 4/1 | 4/2 | 5/1 | 5/2 | 6/1 | 6/2 | 7/1 | 7/2 | 8/1 |
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... | ... | @@ -63,6 +64,20 @@ Slots 9-15: |
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| **Temperature** | 62.00 | 71.12 | 60.19 | 74.31 | 61.25 | 73.75 |
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51.94 | 65.12 | 48.75 | 60.88 | 51.31 | 62.75 | 52.12 | 64.06 |
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*Wiener 21-slot VME64x crate, fans at 3600 rpm (maximum speed):**
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Slots 4-10:
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| **Slot/FMC** | 4/1 | 4/2 | 5/1 | 5/2 | 6/1 | 6/2 | 7/1 | 7/2 | 8/1 |
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8/2 | 9/1 | 9/2 | 10/1 | 10/2 |
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| **Temperature** | 52.75 | 57.06 | 45.31 | 51.56 | 39.31 | 48.31 |
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40.38 | 48.31 | 47.38 | 58.81 | 49.94 | 55.00 | 40.75 | 46.12 |
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Slots 9-15:
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| **Slot/FMC** | 9/1 | 9/2 | 10/1 | 10/2 | 11/1 | 11/2 | 12/1 | 12/2 |
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13/1 | 13/2 | 14/1 | 14/2 | 15/1 | 15/2 |
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| **Temperature** | 49.44 | 55.00 | 48.81 | 56.50 | 49.88 | 55.00 |
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41.44 | 50.88 | 40.69 | 50.12 | 41.31 | 48.12 | 42.75 | 49.00 |
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*Conclusions**
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\- Cards in the middle slots (8-10) are the worst (25 degC difference
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