|
System
|
detector channels T1-T9 |
|
Symptoms
|
spike noise was observed on channells T1, ..., T9 on the sparo
data taker system's monitor (except in T3 that is not working!). The spike
lasts about 1 pixel noise and is almost saturating the plot windows with
attenuation is set to 8. No noise was observed on channells R1-R9. See Fig. 1 |
|
Observed time
|
2000hrs - Tue 05/27/03 |
|
Solution
|
The problem has been fixed swapping batteries D1/P2 with batteries D2/P1. |
|
Fixing time
|
0300hrs - Wed 05/28/03 |
|
Notes
|
The old batteries (D1/P2) have been installed, fully charged,
at 1538 on Sun 05/25/03
The voltage measuered on the old batteries immediately after swapping were:
|
|
Possible cause
|
Faulty batteries or, more likely, faulty connector - to be investigated |
