... | ... | @@ -102,6 +102,9 @@ Slots 9-15: |
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| **Temperature** | 77.69 | 72.38 | 77.31 | 69.75 | 66.88 | 60.12 |
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82.06 | 74.31 | 90.00 | 83.19 |
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Note: slot 6 has a much higher temperature than the other slots. One may
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need to recommend to not use slot 6.
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*Kontron KISS 6U industrial PC:**
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<table>
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... | ... | @@ -150,7 +153,7 @@ Slots 9-15: |
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</tbody>
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</table>
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### Summary
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### Summary - without heatsink
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<table>
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<tbody>
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... | ... | @@ -200,33 +203,44 @@ Slots 9-15: |
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<td>47.3</td>
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</tr>
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<tr class="even">
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<td>Elma 6-slot (excl slot 6)</td>
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<td>60.1</td>
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<td>82.6</td>
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<td>72.6</td>
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<td>22.5</td>
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<td>28</td>
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<td>44.6</td>
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</tr>
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<tr class="odd">
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<td>Kontron</td>
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<td>79.5</td>
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<td><span class="red">98.8</span></td>
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<td>89.2</td>
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<td>89.7</td>
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<td>20</td>
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<td>19.3</td>
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<td><strong>20</strong></td>
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<td>69.7</td>
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</tr>
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</tbody>
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</table>
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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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over slots 7 and 12). Uneven air flow in the crate?
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Note: the ambient temperature on the Kontron measurement is 20 degrees.
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It is 28 degrees on the other measurements.
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\- FMC1 is approximately 8-10 degrees cooler than FMC2. FMC1 is closer
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to the fans and obstructs air flow to FMC2.
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\- Large temperature spans in VME crates suggest uneven air flow between
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different slots.
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### Conclusions
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\- Keeping the fans speed at a maximum (Wiener) results with reasonable
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cooling (worst temperature: 59).
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\- On Elma 6U and Kontron PC platforms, the temperatures are
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unacceptable and exceed the components rating (-40 ... +85). Heatsink is
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needed.
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- Cards in the middle slots (8-10) are the worst (25 degC difference
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over slots 7 and 12). Uneven air flow in the crate?
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- FMC1 is approximately 8-10 degrees cooler than FMC2. FMC1 is closer
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to the fans and obstructs air flow to FMC2.
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- Large temperature spans in VME crates suggest uneven air flow
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between different slots.
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- Keeping the fans speed at a maximum (Wiener) results with reasonable
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cooling (worst temperature: 59).
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- On Elma 6U and Kontron PC platforms, the temperatures are
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unacceptable and exceed the components rating (-40 ... +85).
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- Not using slot 6 on Elma 6U, only on Kontron PC platforms, the
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temperatures are unacceptable and exceed the components rating (-40
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... +85).
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## Thermal imaging
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... | ... | |