... | @@ -40,7 +40,8 @@ measurements for details. |
... | @@ -40,7 +40,8 @@ measurements for details. |
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\- VME: Wiener and Elma crates, with up to 7 SVECs (14 Fine Delays)
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\- VME: Wiener and Elma crates, with up to 7 SVECs (14 Fine Delays)
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installed in subsequent slots. Whenever possible, different
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installed in subsequent slots. Whenever possible, different
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combinations
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combinations
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of VME slots and fan speeds were used. Ambient temp 26-28.
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of VME slots and fan speeds were used. All crates used a MEN A20
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controller. Ambient temp 26-28.
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\- PCI Express: Kontron industrial PC, with 5 SPECs and 5 Fine Delays.
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\- PCI Express: Kontron industrial PC, with 5 SPECs and 5 Fine Delays.
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Ambient temp 19-20.
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Ambient temp 19-20.
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... | @@ -48,7 +49,7 @@ Ambient temp 19-20. |
... | @@ -48,7 +49,7 @@ Ambient temp 19-20. |
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before taking measurements. The first stable sample (with less than 1
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before taking measurements. The first stable sample (with less than 1
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degree temperature change over 1 minute) was used for the statistics.
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degree temperature change over 1 minute) was used for the statistics.
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### **Data:**
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### Data:
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*Wiener 21-slot VME64x crate, fans at 1200 rpm (minimum speed):**
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*Wiener 21-slot VME64x crate, fans at 1200 rpm (minimum speed):**
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... | @@ -78,6 +79,49 @@ Slots 9-15: |
... | @@ -78,6 +79,49 @@ Slots 9-15: |
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| **Temperature** | 49.44 | 55.00 | 48.81 | 56.50 | 49.88 | 55.00 |
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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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41.44 | 50.88 | 40.69 | 50.12 | 41.31 | 48.12 | 42.75 | 49.00 |
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*Elma 18-slot VME64x crate, default fan configuration:**
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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** | 57.44 | 62.56 | 49.75 | 59.06 | 44.50 | 53.88 |
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46.00 | 56.38 | 62.00 | 70.94 | 66.44 | 73.69 | 46.69 | 56.31 |
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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** | 66.00 | 72.06 | 66.88 | 73.56 | 57.38 | 65.44 |
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46.94 | 59.88 | 45.31 | 56.31 | 50.56 | 60.06 | 59.31 |
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*Elma 6-slot VME64x crate, default fan configuration:**
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| **Slot/FMC** | 2/1 | 2/2 | 3/1 | 3/2 | 4/1 | 4/2 | 5/1 | 5/2 | 6/1 |
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6/2 |
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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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*Kontron KISS 6U industrial PC:**
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<table>
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<tbody>
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<tr class="odd">
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<td><strong>Slot</strong></td>
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<td>1</td>
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<td>2</td>
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<td>3</td>
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<td>7</td>
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<td>8</td>
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</tr>
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<tr class="even">
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<td><strong>Temperature</strong></td>
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<td>89.25</td>
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<td>92.56</td>
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<td><span class="red">98.75</span></td>
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<td>88.56</td>
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<td><span class="blue">79.50</span></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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*Conclusions**
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\- Cards in the middle slots (8-10) are the worst (25 degC difference
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\- Cards in the middle slots (8-10) are the worst (25 degC difference
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... | | ... | |