New SEI configuration nodes (ISI_ETMX_ST1_CONF and ISI_ETMY_ST1_CONF)  are now available from the GRD Overview as well as the the H1 Blend page under O-1 on the sitemap.

These nodes will control the configuration of the blends and sensor correction for the end stations. The states try to describe both the engaged blend filter as well as the sensor correction being used:

Blend_Quite_90_SC_BRS - Uses the BRS tilt-corrected sensor correction with the Quite_90 blends. The Quite_90s are the best blends we have for high winds, but do not do as well with the useism as the 45s. Using the BRS tilt corrected signal for SC helps with the wind as well as long as the BRS does not get rung up from the wind.

Blend_Quite_90_SC_None - Quite_90 blends with no SC filters enabled. Also could be used as a good all-around configuration, but not as good in the wind as the previous.

Blend_Quite_90_SC_useism - Quite_90 blends with the sei_notch filter in the WNR bank enabled for SC. The configuration for both high wind and useism. Since the Quite_90s can handle wind but not useism very well, the addition of this SC is meant to help when we have conditions with both wind and useism.

Blend_Quite_45_SC_None -  Uses the 45Mhz blends with no SC filters enabled. The 45mHz blends perform much better in high useism conditions, but do not do well with wind.

Blend_Quite_45_SC_useism - Uses the 45mHz blends with the sei_notch filter in the WNR bank enabled for SC. This may help with the useism a bit more, or it may make it a touch worse. More testing is needed.

(Disclaimer: As testing progresses these states may change and the use of the states may also need some re-evaluation in the future.)

These nodes can turn ON and OFF the BRS SC  by going into and out of the Blend_Quite_90_SC_BRS state. This node will also notify if the BRS damper is on, and then an operator should inform an SEI team member or switch out of a configuration that uses it. It will not automatically turn OFF the BRS SC if the damper turns on! (maybe in the future, but not yet). It will be the job of the operator or SEI team member to take action.

A few notes:

• These states may change as newer, better configurations are made.
• The INIT state is currently a WIP, but I will hopfully have it working consistently soon.
• These nodes manage the BRS_STAT node which reports what state the BRS is in. I would like to remove the BRS_STAT nodes in the future, but not yet.
• Probably more that I'm forgetting

I attached a shot of the Guardian Overview with these new nodes, the updated H1 blend page, as well as the Ops Overview that now have a BRS SC Active/Inactive light.