FOS Discriminator Test

Details FOS Discriminator Test FOS Discriminator Test

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992hst..prop.4098f&link_type=abstract

HST Proposal ID #4098

Physics

Hst Proposal Id #4098

Scientific paper

The optimal discriminator settings were determined in OV. Because both the noise and gain are known to be temperature sensitive, it is likely that some fraction of the channels wil experience some change in their optimal discriminator settings on orbit. The discriminator/noise test should be run once in cycle 2 to verify the stability of those settingxs. The FOS high voltage will be brought to approximately one-half the nominal operating voltage (12750 KV), with the REFDAC=250 and the trim focus current at 0. A 60s wait will allow the high voltage to stabilize. The command block YTDN will be run, with the INTFLAT as the source. Total time is 3.0 hours NON-PRIME.

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