| Xtal/TT | Problem | Solution |
| TT41 | Always has 10-25% of bad events for run type PEDESTAL: the word count is correct, but the content of the data is not. TEST PULSE and LASER are insentive to this problem. We still don't know what is the reason - bad link or bad data from the FE card. | 29-09-05: Solution found increasing the I2C setting to for laser-diode bias current for the GOH to 32. It was in default = 12. The maximum is 128. The solution applies to run 10271 and beyond. |
| general | Very often 1 or 2 TT have a few % of bad events, but these towers
are not always 52 and 57, but more or less random. This effect is not understood yet also. During certain period, ~ 2 days, TT52 had also 20% of data integrity errors as TT41. |
The same solution as avobe. |
| 220/12 | Has no data for the three gains, although the gain value
it there. It was working in 867, but never worked in H4 (always has zeros in data). |
05-10-05: Partial solution found |
| 803/33 | Noisy 803 died about 1 month ago, most probably APD is broken. Paolo Rumerio reported all the story of this channel: (talk) |
|
| 656/28 | 656 and other several channels are noisy. Much more information you can find in monitoring data base. | |
| TT 62 | 02-10-05: 3-6% of integrity errors in run H4-000012302-SM5-PEDESTAL-STD | |
| TT18 | 02-10-05: < 1 % of integrity errors in run H4-000012280-SM5-TEST_PULSE-MGPA | |
| TT43 | 02-10-05: 15-20% of integrity errors in run H4-000012272-SM5-TEST_PULSE-MGPA | |
| TT 8, 21, 63 | 02-10-05: resp.: 5-20%, 40-40%, < 1% of integrity errors in run H4-000012192-SM5-TEST_PULSE-MGPA | |
| TT30 | 02-10-05: < 1 % of integrity errors in runs H4-000012178-SM5-LASER-STD and H4-000012180-SM5-LASER-STD | |
| TT13 | 02-10-05: 1-7 % of integrity errors in runs H4-000012167-SM5-PEDESTAL-STD | |
| TT 34 (40-60%) | 02-10-05: 40-60 % of integrity errors in runs:
H4-000012148-SM5-PEDESTAL-STD |
|
| TT 41 | 02-10-05: 10-20 % of integrity errors in run H4-000012134-SM5-LASER-STD | |
| TT49 | 02-10-05: 15-20 % errors in: LASER H4 11678 STD
mon_done tape done 2005-10-02 18:58:22 CI LS |
|
| 1530/62 | 01-10-05: laser runs showing problems blue laser and red laser | |
| 1672/67 | 01-10-05: laser runs showing problems blue laser (for any offset value the pedestal stays around 2300 ADC counts). | |
| 1255/51 | 01-10-05: laser runs showing problems red laser | |