D. Sigg, D. Barker, F. Clara, O. Patane, J. Kissel
ECRs: E2400409 and E2500296
IIET: 35739 and 35706, respectively
WP: 12901
DWG: D1002741

Primary Change: Change the 18- or 20-bit 8CH DAC signal chains to 28-bit 32CH LIGO DAC chains
- Consolidate all SUS signals driven by 5x 18- or 20-bit 8CH DACs (GS20AO8) onto 2x 28-bit 32CH DACs (D2200368)
- Replace 18-/20- 8CH AI chassis assemblies (D1000305 and D1500177) with WD relays to 28-bit 32CH AI chassis assemblies (D2500353 and D2500400), which use the AI chassis back plane interfaces without the relays D2500097
- Upgrade representation of DACs on the signal connection page to show both DAC cards (D2200368) and DAC adapter cards (D2400014)
- Update the graphical representation on the rack drawings page to show the new CARD arrangement in the SUS-C2 U25 IO chassis

I've crafted a quick drawing of these primary changes, which are attached here, and Oli will post the official Altium version to -v12 D1002741 shortly.

Clean-as-you-go changes:
- Upgrade representation of ADCs on the signal connection page to show both ADC cards (GS16AO16) and Adapter adapter cards (D0902496)
- Updated the connections and labeling for AA chassis for ADC1 to better convey the connections as a pick-off and "parallel" relay of the Transmon QPD A signals (using ISC End Station Wiring Diagram D1100670 and pictures of SUS-C2 ETMX (S1301904) and SUS-C2 ETMY (S1301919).
- Some name / connection clean-up on the graphical representation of the rack drawings 
- TMS TOP drivers were Triple Top, now they're correctly Transmon top.