Notes on tests of Module 28

1. Warm tests (hybrid at 25C).

Observations (and possible solutions to problems, courtesy of pwp):


When tackling these problems, we started many scans in various random orders, so the data is not easily available in an ordered way.

2. Cold tests (hybrid at 0-3C)

Generally much better behaved, ie the strobe delays were now fine (after the second strobe delay scan!!), and the trim range scan looked fine (ie no shift as observed at room temperature). Why the difference? Apart from the temperature, the freezer tests use much longer cables (~6m compared to ~2m).

We ran a normal characterisation sequence at this temperature, which worked fine (apart from stopping after trim-range scan, as we have not recompiled after changing from sleep(1000) to sleep(2000)) - this is the data available on the summary page.

Long term test - was running well, but hung after 22 hours due to LV trip. The sctdaq s/w did not try to restart the LV, and pwp will look into this.