Reports until 17:25, Wednesday 11 June 2014
H1 SUS (CDS, ISC, SYS)
jeffrey.kissel@LIGO.ORG - posted 17:25, Wednesday 11 June 2014 (12320)
ETM ESD AI Chassis Boards at Rev 4
J. Kissel, F. Clara

Upon hearing news that LLO suspects their recent discovery of excess noise in their ESD signal chain (see LLO aLOG 13017 and 13034) is due to an older revision (V4) of AI chassis not being able to drive long signal chains (where the unique), Fil and I checked what documentation exists for ours. The serial numbers and version for our ESD AI chassis are as follows:

Optic   Chassis S/N       Board(s) S/N      Version 
ETMY    S1103819          S1101716            V4
                          S1101720            V4
ETMY    S1103818          S1101884            V4
                          S1101890            V4


So we'll need to swap these out for V6 at the earlier.