Necessary items related to DGS are kept in the computer room (Fig1).
- DAC board (S2012037)
- AI chassis (S2011353)
- DAC internal cable
- DAC external cable
- DAC adapter board (had been already installed in the IO chassis in ASC0 rack).
- DC-DC power supply board (If possible, I will change the power supply board from AC-DC to DC-DC at the same time.)
Dsub-BNC converter chassis is also required for connecting AI and PZT.
Considering the applied voltage to the PZT, it's better to prepare a converter whose R15 and R21 are changed as 1.5kohm.
(See also D1604786)
### Installation space problem
AI will be installed at U13 in ASC0 rack. (See also Fig2 or D1809427)
But it's a problem where Dsub-BNC converter is installed.
Can't we replace Mei Coil Driver module (S2112860) for FNC heater.
It occupies 5 units in the rack! (Fig3)
If we can't, we will have to install it at the top area (around U38?) of the ASC0 rack.
I'll prepare to change the output gain of this circuit tomorrow.
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By the way, I found two Dsub-BNC converter (DAC) were missed.
- S1605872
- S1605868
One of them may be used for filter cavity development at Mitaka.