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lbaops:tidnotes:fileprep [2007/03/14 10:59]
jlovell
lbaops:tidnotes:fileprep [2015/12/18 16:39]
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-====== Tidbinbilla schedule file preparation ====== 
- 
-===== Obtaining Schedule Files ===== 
-Dowload the .skd and .sum files for the experiment from the FTP site and put them in pcfs40:~/sched_prep. The .skd file is processed to a SNAP and procedure file on pcfs40. These files are further processed on pcfs42 before being returned to pcfs40! 
- 
-  *  scp the .skd file to pcfs40:~/sched_prep 
-  *  on pcfs40 in the sched_prep directory: 
-    *  run drudg 
-      *  At the prompt give the name of the .skd file 
-      *  At the next prompt, give the name of the antenna (in this case "Ti") 
-      *  select 3 for a SNAP file then 12 for a PRC file, then 0 to exit 
-    *  transfer the resulting .prc and .snp files to pcfs42:~/vlbi_scheds 
- 
-Both the procedure and SNAP files need some modification. The 
-procedure file needs some extra procedures to set up the PCFS 
-patching and VFCs (this is just to keep them happy and doesn't 
-impact on the data being recorded or the Tsys measurements). There's 
-also a new command to define, called sched_end, that forces the NMC 
-script to exit nicely. The SNAP file needs quite a bit of 
-modification. The first thing is to remove any S2 specific commands 
-as the PCFS won't be controlling the S2. The next thing is to 
-comment out some of the wait commands as some wait commands appear later in 
-the file but have earlier times. For example: 
- 
- !2007.080.09:18:00 
- data_valid=on 
- tape 
- midob  
- !2007.080.09:21:00 
- data_valid=off 
- tape 
- postob 
- scan_name=No0004,v209a,180 
- source=1237-5046,123715.24,-504623.2,2000.0,neutral  
- setup01=0 
- !2007.080.09:18:30 
- tape 
- st=for,slp  
- !2007.080.09:21:00 
- data_valid=on 
- tape 
- midob  
- 
-Note the wait for 2007.080.09:18:30 occurs AFTER 
-2007.080.09:21:00. This causes confusion in the observations and can 
-result in sources being missed. Lastly, the SNAP file should be 
-modified to include source commands the NMC script understands. 
- 
-===== Procedure file modifications.  ===== 
-  *  Remove the setup01, unloader and loader definitions. These are all S2 specific and will cause problems if they're left in. 
-  * Add the following definitions: 
- 
- define  ifds          06132201809x             
- ifd=,,nor,nor  
- lo=lo1,1380,usb,lcp,1.0, 
- patch=lo1,1h,2h,3h,4h,5h,6h,7h,8h,9h,10h,11h,12h,13h,14h  
- enddef 
- define  vclba         06132201825x             
- vc01=285.99,16.00,ul 
- vc02=285.99,16.00,ul 
- vc03=285.99,16.00,ul 
- vc04=285.99,16.00,ul 
- vc05=285.99,16.00,ul 
- vc06=285.99,16.00,ul 
- vc07=285.99,16.00,ul 
- vc08=285.99,16.00,ul   
- vc09=285.99,16.00,ul   
- vc10=285.99,16.00,ul   
- vc11=285.99,16.00,ul   
- vc12=285.99,16.00,ul   
- vc13=285.99,16.00,ul   
- vc14=285.99,16.00,ul   
- !+1s 
- valarm 
- enddef 
- define  postob        00000000000x 
- enddef 
- define  midob         00000000000x 
- vread 
- enddef 
- define  sched_end     00000000000x             
- sy=echo "TERMINATE" | netcat nmc-ws4 -q 2 6743 
- enddef 
- 
-Note the above is for L-band. For other bands, adjust the LO frequency 
-(to the first LO), change the patching to the low frequency filters if 
-needed, and the VC frequencies to something in the band. 
- 
-===== SNAP file modifications ===== 
-Run the script remove_S2_from_SNAP.pl to remove all S2 specific 
-commands and CSIRO2DSN (twice) to remove the time wait problem. This 
-can be done with a single command: 
- 
-  ~/bin/remove_S2_from_SNAP.pl SNAP_FILE.snp | ~/bin/CSIRO2DSN | ~/bin/CSIRO2DSN > temp.snp 
- 
-Obviously replace SNAP_FILE.snp with the name of your SNAP file. 
- 
-Lastly, modify the temp.snp to include the NMC commands with 
-precessed source coordinates: 
- 
- ~/bin/snap2sidereal_apc.pl temp.snp 2007 80 > SNAP_FILE.snp 
- 
-Note you need to provide the year and day number of the experiment. The output file should be the name of the original SNAP file. 
- 
-===== Transfer the modified SNAP and procedure files to pcfs40.  ===== 
-The .snp file goes in /usr2/sched, the .prc goes in /usr2/proc 
- 
  
lbaops/tidnotes/fileprep.txt · Last modified: 2015/12/18 16:39 (external edit)