... | ... | @@ -26,31 +26,29 @@ FMC slot 2 and FMC TDC in FMC slot 1 |
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*Conclusions:**
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\- big heatsink gives very littl temperature drop (1 degC can be
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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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## ELMA operational crate full of Fine Delays
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## Detailed temperature measurements on different platforms:
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*Environment**
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### **Test environment**
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\- crate: 18-slot ELMA VME64x
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\- contents: 6 SVECs with 12 Fine Delays in total
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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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*Results:**
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| **VME Slot** | **FMC Slot** | **Temperature (degrees Celsius)** |
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| 7 | FMC1 (lower) | 42.7 |
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| 7 | FMC2 (upper) | 56.1 |
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| 8 | FMC1 (lower) | 61.8 |
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| 8 | FMC2 (upper) | 70.0 |
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| 9 | FMC1 (lower) | 64.7 |
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| 9 | FMC2 (upper) | 73.6 |
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| 10 | FMC1 (lower) | 60.8 |
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| 10 | FMC2 (upper) | 71.0 |
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| 11 | FMC1 (lower) | 52.4 |
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| 11 | FMC2 (upper) | 59.2 |
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| 12 | FMC1 (lower) | 40.2 |
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| 12 | FMC2 (upper) | 51.6 |
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\- PCI Express: Kontron industrial PC, with 5 SPECs and 5 Fine Delays.
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\- Ambient temperature: 26 - 28 degrees Celsius.
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### **Data:**
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*Wiener 21-slot VME64x crate:**
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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 | 8/2 |
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9/1 | 9/2 | 10/1 | 10/2 |
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*Conclusions**
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... | ... | |