... | ... | @@ -34,23 +34,22 @@ considered measurement error) |
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*Note:** All temperatures in degrees Celsius.
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### **Test environment**
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### Test environment
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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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combinations
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of VME slots and fan speeds were used.
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of VME slots and fan speeds were used. Ambient temp 26-28.
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\- PCI Express: Kontron industrial PC, with 5 SPECs and 5 Fine Delays.
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\- Ambient temperature: 26 - 28.
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Ambient temp 19-20.
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\- Temperatures were logged over time to make sure they have settled up
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before. The first stable sample (with less than 1 degree temperature
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change over 1 minute) was used for the statistics.
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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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### **Data:**
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*Wiener 21-slot VME64x crate:**
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*Wiener 21-slot VME64x crate, fans at 1200 rpm:**
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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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... | ... | @@ -58,6 +57,12 @@ Slots 4-10: |
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| **Temperature** | 65.69 | 71.38 | 56.88 | 66.25 | 50.69 | 63.88 |
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51.19 | 63.62 | 58.62 | 73.25 | 61.44 | 71.00 | 50.12 | 59.62 |
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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** | 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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*Conclusions**
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\- Cards in the middle slots (8-10) are the worst (25 degC difference
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