FEB ID | Diode & | protection Protection Res. | reworkRework | Tested
w/ 4hybrids
old plate 4 Hybrids
FEB on Support Plate | Cleaned | Ready to be loaded on production platefor Loading on Final FEB Support Plate | Comment |
|---|
1 | ? | Yes | 12/10/2014 | | | | 2 | A link to the FEB couldn't be established. |
| 2 | No | - | - | - | FEB mezzanine Amtech connector has been replaced but the board does not have any rework done. |
| 3 | No | N | - | - | - | Back from amtech? | Waiting to be reworked. Initial test have shown that only 19/20 APV's can be synced. |
| 4 | No | ? | | 12/10/14 | res1 results | ?- | ? | Except - | Waiting to be reworked. Initial test have shown that, except for the edge channels, the noise on FEB CH 0-2 ranges from ~47-50 | ADC counts. The edge channel noise is ranging from ~53 - 55 ADC counts. | This is consistent with previous observations so these channels seem fine. | | The ripple is still There is a ripple in the noise present on FEB CH 03 | . Overall, and the noise | accross that across the whole hybrid is ~10 ADC counts higher than the rest of the channels. |
| 3 | N | - | - | - | Waiting to be reworked. |
| 4 | N | - | - | - | Waiting to be reworked. |
| 5 | Yes | 5 | Y | 12/11/14 | res1results | 12/11/14 | YESYes | It looks fine. |
| 6 | YYes | 12/11/14 | res1results | ?- | No | The baseline and noise of FEB CH 00 | looked very strange for the last runhas issues. Most of the events | were had a baseline at ~6150 ADC counts and the noise was ~900 | . Let's rerun in order to check if the problem persistADC counts. The behavior worsened in subsequent runs. |
| 7 | ?No | | | | Waiting to be reworked. |
| 8 | YYes | 12/11/14 | res1results | 12/11/14 | YESYes | This board looks fine. |
| 9 | ? | | | | |
| 10 | YYes | 12/11/14 | res1, res2results 1, results 2 | 12/11/14 | YESYes | After power cycling? everything looks fine now. |
| 11 | YYes | 12/10/14 | res1, res2results 1, results 2 | | NONo | Again, overall the noise looks fine (~50 ADC counts) but there seems to be some samples that still have a large shift in the noise. Looking at the baseline distribution, there | seeemsseems to be some large tails so that's probably the problem (ADC sampling point is off?). | I'll need to look at the data a bit closer tonight but for now, we can move on. |
| 12 | YYes | 12/11/14 | res1results | 12/11/14 | YESYes | The baseline, once again, has tails but overall the noise looks fine on all FEB channels. The baseline and noise on FEB CH 1 and 3 have features similar to what we saw yesterday -- first sample noise is shifted by ~5-10 ADC counts. All other samples look fine. |
| 13 | ? | Yes | 12/10/14 | | | | A link to the FEB couldn't be established. Board 13 has some known issues on its D1.0V rail |
| 14 | ? | | | | Yes | 12/10/14 results | 12/11/14 | Yes | Looks fine. | |
| 15 | YYes | 12/10/14 | res1results | 12/11/14 | YESYes | Baseline has tails and the shifts in the noise are present on the same APV's as before (on CH 1) but otherwise it looks fine. | The shifts in the are likely being caused by the fact that I'm using RMS for noise instead of fitting the distribution.
/EPP