B2PS B2PS reads output files (PCR files) from the JPL/Caltech Block-II VLBI Correlator. It summarizes the numbers of records of each type found in the files and lists the sources and stations for which data are included. Optionally, it can list the contents of the various scan setup records, and can extract Mark-2 Tsys and error data. This program is still under development, and the format of the output file may be changed without notice. Example $ B2PS INPUT = VLBPROC:[BIIDATA]Y*.PCR LISTFILE = B2PS.LIS / Parameters Parameter INPUT must be specified; the others are optional. The parameters names can be abbreviated to uniqueness (minimum match). End the list of parameters with a slash (/). INPUT = "filename" : the name of the input file or files. Wild cards are permitted (e.g., INPUT = CITSCR:[TJP...]*.PCR). DEFAULT = "filename" : the default input file name, used to supply default fields (disk, directory, extension) for the input file name. The "default default" is VLB_PCR:*.PCR; i.e., B2PS will look for files with extension .PCR in the directory with logical name VLBPCR. LISTFILE = "filename" : a name for the listing file created by B2PS. The default is SYS$OUTPUT, which is usually the terminal or batch logfile. DUMP (no value) : if this keyword is specified, the contents of correlator and scan setup records will be included in the listing file. This option is probably of use only to Block-II gurus. TSYS (no value) : if this keyword is specified, the contents of the "Mark-II interface ancillary data output records" (IAO records), which contain Tsys and error information from the Mark-II tapes, will be written in a file called B2PS_TSYS.DAT (a different name can be used by defining the logical name B2PS_TSYS). B2PS Page 2 Sample Output (DUMP not specified) Listing from program B2PS ------------------------------------------------------------------------ File: VLBPROC:[VLBPCR]B62T09.PCR;1 Last modified: 23-MAY-1986 08:34 Summary of records in this file: Record Type Number Size 0010 process configuration table 1 832 0020 group configuration table 1 1904 0040 delay model 28 768 0045 geometric model output 49 8096 0050 phase model 28 192 0060 tensor configuration 3 752 0070 cross-correlation data 479 7568 Total: 589 4053648 The correlator was configured with 3 stations and 28 channels, each with 8 lags. The integration time was 2.00 seconds. Data output was in the frequency domain. Experiments: B62G Scans: 1000622 Sources: 3C345 Antennas: ONSALA BONN CRIMEA IOWA VLA OVRO WSRT HCRK JODRELL DUMMY HSTK NRL PENT Earliest time: 100 06:06:00.000 Latest time: 100 06:21:56.000 ------------------------------------------------------------------------ Program History: Version 1.0: 1985 Oct 19 - new program (TJP). Version 1.1: 1986 Feb 2 - additional output (TJP). Version 1.2: 1986 Feb 27 - add DEFAULT parameter (TJP). Version 2.1: 1986 Jun 7 - new format for PCR files; add TSYS (TJP).