david.barker@LIGO.ORG - posted 10:44, Wednesday 26 June 2024 - last comment - 10:51, Wednesday 26 June 2024(78676)
LIGO 28AO32 h1susex DAC Test MEDM
I've written a python program which genenerates a DAC_TEST MEDM. It is accessible from the SITEMAP via the WD pull down (the CDS pull down is full).
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Currently the first 8 DAC channels are routed to the ADC on h1pemex (first 8 channels). This is achieved using a custom DB25 cable, which connects to one of the 4 DAC inteface plates on the back of the IO Chassis and splits these channels into 8 BNC cables which are connected to the first 8 channels of the PEM AA chassis.
Note that this is a standard PEM AA chassis, with a gain of 10.
By moving this cable between the IO Chassis interface/header connectors, the new DAC's channels can be tested 8 at a time.
The h1susetmx DAC_MTRX permits any signal to be routed to these ADC channels.