Reports until 11:13, Monday 28 September 2015
H1 SEI
hugh.radkins@LIGO.ORG - posted 11:13, Monday 28 September 2015 (22022)
WHAM5 ISI Top model Modelified to Temporarily Fix Rogue Ext Trip Issue

re Int Issue 1127, WP 5521.

Have modified the WHAM5 Top Level Model to terminate the output of the ADC and ground the input of the Coil Driver Corner2 Voltage monitors.

This will eliminate the false Rogue Excitation WD Trips of which this platform has been suffering.  BTL identified the cause finding the bad monitor output.

This is temporary until we swap out the driver and look for a cause in the monitor circuit.

On Tuesday 29 Sept, the model will be installed and the FE restarted after taking the platform down to safe or offline.

After restart, the SDF will have to be repointed to the OBSERVE.snap

Attached is an image of the modified model area: the two don't look like the others.

Modified model commited to svn rev 11742.

Images attached to this report