J. Kissel, D. Sigg, D. Barker
ECR E2100485
ECR E2200401
WP 12901

Continuing on the deprecation of 18-bit DAC path (ECR E2100485), we upgraded the h1iscex's DAC0 card today from an 18- to a 20-bit DAC. One of the front-end models that use that DAC is the h1pemex model.

Here's the before vs. after for the models. While there, I found and left the new ADC card from ECR E2200401's PEM sensor array expansion. I'd thought it was installed solely for characterizing the 32CH LIGO DAC, but it had only been temporarily used for that. It should be there! And also, the electric field meter ADC should also remain there.

If the PEM team wants to account for the factor of 4x gain change in the DAC calibration, I installed new DACOUTF filters upstream of the GDS filters that are used to drive the DACs.

The model has been committed to
    /opt/rtcds/userapps/release/pem/h1/models/
        h1pemex.mdl : r28026 --> r34059