Changes between Initial Version and Version 1 of Notes/CABB-DataRates

Timestamp:

02/14/08 23:13:32 (16 years ago)

Author:

VincentMcIntyre

Comment:

pinched from atoperations Ops002 minutes

Notes/CABB-DataRates

@@ +1 @@
+=== CABB Data rates and storage ===
+On [/trac/atoperations/wiki/Ops002 2008-02-13], Jim Caswell told us thatthe maximum data rates will be with:
+ * 16 zoom channels
+ * each 2048 channels
+ * 4 stokes
+ * 15 baselines + autocorrelations
+ * all at two frequencies
+is about 500 Gbytes/day.
+
+The interim system (to be installed in May 2008) will run parallel to the existing old conversion system and correlator.
+The table below summarises the CABB available in the interim and final systems and shows the maximum data rates for each.
+
+||       ||     2008APR || 2008OCT       ||     
+|| Cycles/min ||        6 ||    6 ||
+|| bytes/datum ||       8        ||     8 ||    
+|| Stokes        ||     4        ||     4 ||    
+|| frequencies ||               1 ||            2 ||    
+|| Standard channels     ||     4096     ||     4096 || 
+|| baselines     ||     10       ||     15 ||   
+|| Auto corr products ||                5 ||            6 ||    
+|| Bytes/minute  ||     1.18E+07 ||             3.30E+07 ||     
+|| Gbytes/day    ||     17.0     ||     47.6 || 
+||       ||      ||      ||                     
+||      Zooms    ||      ||             16 ||   
+||      Channels/zoom    ||      ||             2048 || 
+|| Bytes/minute          ||      ||                     2.64E+08 ||     
+|| Gbytes/day ||         ||                     380.5 ||        
+||      '''Maximum data rate (GBytes/day) '''    ||     '''17.0''' ||           '''428.1''' ||  
+
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