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Message ID: 10973     Entry time: Wed Feb 4 18:16:44 2015
Author: Koji 
Type: Update 
Category: LSC 
Subject: Data transfer rate of c1lsc reduced from ~4MB/s to ~3MB/s 

c1lsc had 60 full-rate (16kS/s) channels to record. This yielded the LSC to FB connection to handle 4MB/s (mega-byte) data rate.
This was almost at the data rate limit of the CDS and we had frequent halt of the diagnostic systems (i.e. DTT and/or dataviewer)

Jenne and I reviewed DAQ channel list and decided to remove some channels.  We also reviewed the recording rate of them
and reduced the rate of some channels. c1lsc model was rebuilt, re-installed, and restarted. FB was also restarted. These are running as they were.
The data rate is now reduyced to ~3MB nominal.


The following is the list of the channels removed from the DQ channels:

AS11_I_ERR
AS11_Q_ERR
AS165_I_ERR
AS165_Q_ERR
POP55_I_ERR
POP55_Q_ERR

The following is the list of the channels with the new recording rate:

TRX_SQRTINV_OUT 2048
TRY_SQRTINV_OUT 2048
DARM_A_ERR 2048
DARM_B_ERR 2048
MICH_A_ERR 2048
MICH_B_ERR 2048
PRCL_A_ERR 2048
PRCL_B_ERR 2048
CARM_A_ERR 2048
CARM_B_ERR 2048

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