AIPS HELP file for VLBASNPL in 31DEC21
As of Sat Oct 23 21:55:43 2021
VLBASNPL: procedure to plot selected contents of SN or CL
INNAME UV data (name).
INCLASS UV data (class).
INSEQ 0.0 9999.0 UV data (seq. #). 0 => high
INDISK 0.0 9.0 Disk unit #. 0 => any
INEXT Input 'SN','CL'
INVERS Input table file version no.
SOURCES Source list
TIMERANG Time range to plot
STOKES Stokes type to plot: R, L,
RR, LL, RRLL, DIFF, RATO
SUBARRAY 0.0 Limit to subarray; 0 -> 1
OPTYPE Data to be plotted:
DOTV -1.0 1.0 =1 plot to TV, <=0 make plot
Use: Plots selected calibration data versus time from a specified SN
or CL table to the TV.
Type RUN VLBAUTIL to make the VLBASNPL procedure
INNAME.....UV file name (name). Standard defaults.
INCLASS....UV file name (class). Standard defaults.
INSEQ......UV file name (seq. #). 0 => highest.
INDISK.....Disk unit #. 0 => any.
INEXT......'SN' or 'CL' table to be plotted, ''=>'CL'
INVERS.....Version number of table to plot, 0=>highest no.
SOURCES....Source list. '*' = all; a "-" before a source name means
all except ANY source named.
TIMERANG...Time range of the data to be plotted. In order: Start day,
hour, min. sec, end day, hour, min. sec. Days relative to
STOKES.....The desired Stokes type of the displayed data:
'R' = RCP, 'L' = LCP, 'RL' or 'RRLL' both RCp and LCP
'DIFF' = difference between RCP and LCP.
'RATO' = ratio between RCP and LCP - done for amplitudes,
system and antenna temperatures, and SNRs only.
SUBARRAY...Limit display to specific subarray. -1 -> all, 0 -> 1.
OPTYPE.....Data to be plotted:
'PHAS' = phase,
'AMP ' = amplitude,
'DELA' = singleband delay
'RATE' = rate
'DDLY' = dispersive delay (CL only)
' ' => 'PHAS'
To check the results of VLBACALA set OPTYPE='AMP' and
DOTV.......> 0 => plot directly on the TV device, otherwise make a
plot file for later display on one or more devices
(including the TV if desired).
VLBASNPL: Procedure to examine calibration in SN/CL tables
Documenter: Amy Mioduszewski
Related Programs: VLBAUTIL, SNPLT, VLBAFRPL
To check the calibration tables. This should be done all through
the calibration process but particularly to check the amplitude
corrections after running VLBACALA.
Steps in VLBASNPL:
Runs SNPLT. If OPTYPE='PHAS' then PIXRA=-180,180. Sets the
number of plots (NPLOT) to the number of antenna unless this
is greater than 12 then NPLOT=10.