User Tools

Site Tools


lbaops:lbadec2013:vc219holog

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Next revision
Previous revision
lbaops:lbadec2013:vc219holog [2013/12/29 04:12]
breid
lbaops:lbadec2013:vc219holog [2015/12/18 16:38] (current)
Line 1: Line 1:
 +Hobart windstowed 2255-2317, 2330-End of experiment. ​
 +
 +Discovered a problem with the Vex file related to the fanout used. The Hobart rack is set for geodesy (not a VLBA-style rack) which caused problems with the fanout mode used. To correct this, the SCHED setup was changed to:
 +
 +station=HOB_MK5\\
 +m4patch=geo1\\
 +format=MKIV1:​2\\
 +ifchan='​2N','​2N','​1N','​1N'​\\
 +bbc=11,​12,​3,​4\\
 +/
 +
 +The VEX file has this track assignment:
 +
 +$TRACKS;\\
 +  * \\
 +def MKIV.4Ch2bit1to2;​\\
 +  *  mode =  1    stations =Ho\\
 +  *     ​format = MKIV1:2, and fan-out = 2\\
 +  *     mode requires ​ 16.00Mb/​s/​tr;​ stations using disks\\
 +     ​track_frame_format = Mark4;\\
 +     ​data_modulation = off;\\
 +     ​fanout_def =   : &CH01 : sign : 1:  2:  4;\\
 +     ​fanout_def =   : &CH01 :  mag : 1:  6:  8;\\
 +     ​fanout_def =   : &CH02 : sign : 1: 10: 12;\\
 +     ​fanout_def =   : &CH02 :  mag : 1: 14: 16;\\
 +     ​fanout_def =   : &CH03 : sign : 1: 18: 20;\\
 +     ​fanout_def =   : &CH03 :  mag : 1: 22: 24;\\
 +     ​fanout_def =   : &CH04 : sign : 1: 26: 28;\\
 +     ​fanout_def =   : &CH04 :  mag : 1: 30: 32;\\
 +enddef;\\
  
 This configuration gave good fringes (at X-band) to the other Australian telescopes. This configuration gave good fringes (at X-band) to the other Australian telescopes.
  
  
lbaops/lbadec2013/vc219holog.txt · Last modified: 2015/12/18 16:38 (external edit)