ECR for Moving the 79.2MHz Doubler to ISC-R4

Document #:

LIGO-E1400413-v1

Document type:

E - Engineering documents

Abstract:

Move the doubler which drives the ALS fiber distribution box from rack ISC-R1 to ISC-R4. This reduces the electronics crosstalk between this unit and the PSL VCO. We will also used a different RF patch panel in ISC-R2. The RF power levels have been re-measured, possibly requiring to change the attenuator at the ALS fiber distribution chassis input. This is integration tracking issue 714.
https://services.ligo-wa.caltech.edu/integrationissues/show_bug.cgi?id=714

Files in Document:

• E1400413-v1.pdf (file is not accessible)

Other Files:

• E1400413-v1.docm (file is not accessible)

Topics:

• Sensing and Control

Authors:

• Daniel Sigg

Keywords:

ECR 79.2MHz Doubler

Notes and Changes:

approved by Dennis Coyne 10/31/2014

Referenced by:

• LIGO-E1400312: Electronics and Optics Change Request from the HIFO-XY Test
• LIGO-G1401266-v1: RF cross-talk