OMC DCPD Whitening Filter PCB (2x Channel, 1x OMC Version)

Document #:

LIGO-D2200044-v3

Document type:

D - Drawings

Abstract:

This is the signal whitening PCB for the OMC DCPD Whitening Chassis D2100631. This along with D2200043 (Front) and D2200044 (Power) replace the single D2100630 PCBs

Files in Document:

• Schematic Print (D2200044-v3 OMC DCPD Whitening PCB.PDF, file is not accessible)

Other Files:

• Packed Altium Project (D2200044-v3 OMC DCPD Whitening PCB (2-3-2023 2-49-55 PM).zip, file is not accessible)
• Packed Altium Project (D2200044-v3 OMC DCPD Whitening PCB (2-3-2023 8-25-17 PM).zip, file is not accessible)
• Project Output Files (Project Outputs for D2200044-v3 OMC DCPD Whitening PCB.zip, file is not accessible)

ICS/JIRA Record:

• ICS_LINK

Topics:

• A+ Project
• Sensing and Control

Authors:

• Dean Schaetzl

Keywords:

A+ OMC DCPD Whitening

Notes and Changes:

v3 updated the whitening component values by factors of 10. The filter poles and zeros stayed the same. The AD829 was replace with OP37 for less DC offset.

See https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=67119 for details on *how* to modify the board, and discussion of improved noise performance.

See https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=67110 for discussion of reduced output voltage bias.

Related Documents:

• LIGO-D2200043: OMC DCPD Whitening Chassis Front Interface PCB (2x Channel, 1x OMC Version)

Referenced by:

• LIGO-D2200043-v2: OMC DCPD Whitening Chassis Front Interface PCB (2x Channel, 1x OMC Version)
• LIGO-D2200215-v1: OMC DCPD Whitening Filter Chassis Assembly (2x Channel, 1x OMC Version)