[daip] Re: APCAL ?

[Eric Greisen]

Nissim Kanekar writes:
 > 
 > Hi Eric,
 > 
 > I've been trying to use AIPS to analyse some global VLBI data and got the 
 > following strange error with APCAL. 
 > 
 > 
 > scorpi> APCAL1: Task APCAL  (release of 31DEC05) begins
 > scorpi> APCAL1: Writing SN table  1
 > scorpi> APCAL1: AMPCAL: PARAMETER MXVAL TOO SMALL: CONTACT AIPS ADMIN
 > scorpi> APCAL1: Purports to die of UNNATURAL causes
 > 
 > 
 > The procedure followed so far was to load all data into a single output 
 > file with FITLD, then FXPOL to make the IF-Pol corrections, then ANTAB to 
 > read in the T_sys values for the non-VLBA antennas, followed by APCAL 
 > which gave the above error. Wasn't quite sure if this is a problem with 
 > APCAL or whether there's an error in the EVN/Arecibo input file to ANTAB.

You need to "merge" the tables which have excess duplicate
information.  The proc MERGECAL must be run since you are not using
the VLBAUTIL procs.  See Appendix C and/ot Chapter 9 of the CookBook.

Eric Greisen