jameson.rollins@LIGO.ORG - posted 12:02, Wednesday 19 April 2023 - last comment - 17:07, Wednesday 19 April 2023(68828)
H1 DMT unstabale right now, affecting GDS-CALIB_STRAIN and sensemon
The H1 DMT system has been experiencing instability since early this morning. This means that the GDS data is not available (via NDS2 or otherwise), including CALIB_STRAIN and the sensemon range. Will report back when the issue has been resolved.
Comments related to this report
jameson.rollins@LIGO.ORG - 15:35, Wednesday 19 April 2023 (68839)
DMT should be recovering. We had to increase the buffer sizes after an increase in the size of the GDS broadcast frames yesterday. Please let the CDS staff know if you see any more issues with the sensemon range of the GDS-CALIB_STRAIN channels.
jameson.rollins@LIGO.ORG - 16:03, Wednesday 19 April 2023 (68840)
Since this also affects the seismic BLRMS that are displayed on the control room wall, there is an ndscope template available that reproduces the 0.03–0.1 Hz and 0.1–0.3 Hz traces using the front-end BLRMS channels, and hence will stay live even when DMT is down. It lives in userapps under isi/h1/ndscope/Seismic_FOM_STS.yaml (unlike the corresponding DMT file, which lives somewhere in the isc/ directory structure). Right now this needs to be launched with ndscope-dev because it contains a couple labeling features that are not available in vanilla ndscope yet. There are also a couple of pending ndscope features (customizable grid alpha and labelless y cursors) that are not implemented yet to better emulate the corresponding DMTviewer file.
There is not currently an ndscope yaml to replace the 3–10 Hz and 10–30 Hz BLRMS that use the front-end Güralp channels, but one could easily be created so long as care is taken to get the correct calibration into microns per second.
DMT should be recovering. We had to increase the buffer sizes after an increase in the size of the GDS broadcast frames yesterday. Please let the CDS staff know if you see any more issues with the sensemon range of the GDS-CALIB_STRAIN channels.
I spoke too soon, this issue is still being worked on.
ok NOW it should be fixed.
Since this also affects the seismic BLRMS that are displayed on the control room wall, there is an ndscope template available that reproduces the 0.03–0.1 Hz and 0.1–0.3 Hz traces using the front-end BLRMS channels, and hence will stay live even when DMT is down. It lives in userapps under
isi/h1/ndscope/Seismic_FOM_STS.yaml(unlike the corresponding DMT file, which lives somewhere in theisc/directory structure). Right now this needs to be launched withndscope-devbecause it contains a couple labeling features that are not available in vanillandscopeyet. There are also a couple of pending ndscope features (customizable grid alpha and labelless y cursors) that are not implemented yet to better emulate the corresponding DMTviewer file.There is not currently an ndscope yaml to replace the 3–10 Hz and 10–30 Hz BLRMS that use the front-end Güralp channels, but one could easily be created so long as care is taken to get the correct calibration into microns per second.