NAOJ GW Elog Logbook 3.2
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MarcEisenmann - 22:55, Tuesday 02 April 2024 (3508)
tidying up electronics
I finalized the mixers box and installed it in the bottom NIM rack.
A little issue is that the BNC mixers are a bit too large to close the box... However we still have quite some space in the NIM racks so I'll leave the box open for now.
I'm also taking this opportunity to change cables for more appropriate ones and passing them through the cable clamp.
One thing I'm not sure about is that OPO RF signal was sent to the 'L' port of one mixer which I thought was for LO..
I'll correct this.
I swapped the R and L cables for the OPO mixer.
During this process a cable for CC PLL monitor was quite damagedd but it's a bit tedious to replace alone and not priority for now so I left it as is for now.
I finalized the new box connections and little cable tidy up.
I could lock SHG after changing the DDS1 DAC1 phase from 20 to 240deg and the servo gain from 0.9 to 0.1 to avoid ringing. I measured about 30% HOM still present and 235mW of green produced.
The MZ/GRMC are heavily misaligned and I'll recover them tomorrow.