ECR: Replace 18-bit DACs in CDS front-ends with the new LIGO 32-bits DACs

Document #:

LIGO-E2400409-v1

Document type:

E - Engineering documents

Abstract:

Replace 18-bit DAC cards in front-end control systems with 32-bit LIGO designed DAC (LIGO-E2200440).
This ECR replaces the previous ECR (LIGO-E2100485) meant to replace the currently used 18-bit DACs with new 20-bit DACs, instead here a 32-bits LIGO DAC which has been engineered, debugged and tested by LIGO Staff is proposed

Corresponds to IIET Ticket 35739
https://services1.ligo-la.caltech.edu/FRS/show_bug.cgi?id=35739

Files in Document:

• ECR main file (LIGO-LIGO-E2400409-v1.pdf, 97.7 kB)

Other Files:

• Source file (LIGO-LIGO-E2400409-v1.docm, 19.8 kB)

Topics:

• Data Acquisition System

Authors:

• Fernando Mera

Keywords:

DAC 32-bits

Notes and Changes:

- Metadata (only) revised to include reference to IIET ticket. No functional change to ECR. J. Kissel 2025-Oct-27.

- Metadata above reset original signatures / approval from 2024-Nov-6. Re-signed 2025-Oct-29.

Referenced by:

• LIGO-E2200440: PCIe LIGO 32 Bit Digital to Analog Converter (DAC) Document Tree