!   Example schedule for VLBA and Mark IV observations
!   with 512 Mbps recorded bit rate.  This used to be a demonstration
!   of the use of 2 tape drives on the VLBA and 2 heads on MKIV.
!   It now uses disk systems, including the RDBE_DDC on the VLBA.
!
!   Created originally for testing purposes: H.J. van Langevelde
!   Adapted as a SCHED example: R.C. Walker  28 Dec 2000.
!   RDBE conversion  March 27, 2014.  RCW.
!
!   For testing purposes, there are a couple of lines that 
!   can be swapped to trigger postpass related warnings: look for 
!   !go_warn or !go_ok
!
!   Control code and print requests
!
overwrite
sumitem=ela, aza, slew, dwell, disk
!optmode = scans
!opminant = 3
!
!   Cover information.
!
expt     = 'An experiment that exercises new Sched/VEX features'
expcode  = 'eg512g'
version  =  2
piname   = 'Huib van Langevelde'
address1 = 'JIVE, Radiosterrenwacht Dwingeloo'
address2 = 'Postbus 2, 7990 AA Dwingeloo'
address3 = 'the Netherlands'
phone    = '+31 521 596 515'
obsphone = '+31 528 221 273'
fax      = '+31 521 597 332'
email    = 'langevelde@jive.nl'
obsmode  = 'VLBA/MKIV'
obstype  = 'VLBI'
!
!  Correlator information.
!
correl   = 'JIVE'
coravg   = 4
corchan  = 128
cornant  = 10
corpol   = 'on'
corwtfn  = 'uniform'
corsrcs  = 'standard'
cortape  = DAT
corship1 = 'Huib van Langevelde'
corship2 = 'JIVE, Radiosterrenwacht Dwingeloo'
corship3 = 'Postbus 2, 7990 AA Dwingeloo'
corship4 = 'the Netherlands'
cornote1 = ' '

!  Standard Source and Station Catalogs for the wideband systems.
stafile  = $SCHED/catalogs/stations_RDBE.dat
srcfile  = $SCHED/catalogs/sources.vlba
freqfile = $SCHED/catalogs/freq_RDBE.dat

!
!  A source.  This used to be "M31*", but it was learned that the
!  Vex parser would not like that.
!  Generally characters other than letters, numbers, + and - are not
!  recommended.
!
srccat /
EQUINOX = J2000
SOURCE='M31' RA=00:42:44.329 DEC=41:16:08.42 /
endcat /
!
!
!  Setup file for a 512 mode.  This is 8 channels, 2 bits, 16 MHz/channel
!  which is 64 Mbps per channel.
!  Sched used to set frequencies just from the band.  That has not been
!  implemented yet with the wideband RDBE systems - it's more complicated
!  thanks to the need to avoid crossovers, RFI etc.
!
setinit = eg512-512 /
! The 512 Mbps mode for this example.  
!   band = '1cm'
  nchan    = 8
  bits     = 2
  bbfilter = 16.0
  pol      = dual
  freqref  = 22203.75
  freqoff  = 0,0, 16,16, 32,32, 48,48
  /
endset /
!
!
!  Set date and start time.
!
year   = 2014
month  = 3
day    = 4
start  = 16:00:00 
!
!
!
stations = hn, sc, nl, fd, la, 
	   mc, noto, jodrell2, onsala60
!
setup = eg512-512
!
!  The schedule.
!
!  March 2014 - converted to dwell.
!    Use the extra arguments of dwell to limit the damage from
!    slow antennas or antennas for which the two sources go
!    close to the zenith causing long slews.
!  Leave the readback and tape change options, but they
!  are not actually needed for disks, at least on the VLBA
!
!  Put in a gap of 16 seconds once per cycle through the loop
!  to keep the field stations happy with pack change opportunities.
!  This cannot be less because of the MINPAUSE=10 and PRESTART=5 
!  used for field system stations.
!
repeat 1 source = '3C48'  dwell = 22:00   /
group 6  repeat 5
source = 'J0045+4555' dwell = 4:00, 2, 2:00 gap=16 /
source = 'm31'       dwell = 3:00, 1, 2:00 gap=0 /
source = 'J0045+4555' dwell = 3:00, 1, 2:00 /
source = 'm31'       dwell = 3:00, 1, 2:00 /
source = 'J0045+4555' dwell = 3:00, 1, 2:00 /
source = 'm31'       dwell = 3:00, 1, 2:00 /

! Final calibrator scan.
source = 'J0045+4555' dwell = 3:00, 1, 2:00 /
!
!  Time for a readback test.  They took take up to 4 min in 512 mode.
!  Scan 33
gap 15:0 repeat 1 source = '3C48'  dwell = 11:00, 0, 0   /
gap 0

!  In this period, M31 and J0045+4555 go through zenith at HN
!  on opposite sides so there are some long slews.  Allow a bit 
!  bigger difference between the slowest antennas and the rest.

gap 0  group 6 repeat 5
source = 'J0045+4555' dwell = 4:00, 2, 2:00 gap=15 /
source = 'm31'       dwell = 3:00, 2, 1:30 gap=0 /
source = 'J0045+4555' dwell = 3:00, 2, 1:30 /
source = 'm31'       dwell = 3:00, 2, 1:30 /
source = 'J0045+4555' dwell = 3:00, 2, 1:30 /
source = 'm31'       dwell = 3:00, 2, 1:30 /

!close calibration cycle.
source = 'J0045+4555' dwell = 3:00, 2, 1:30 /
!
!  Another slot for the old readback tests and tape changes.
!  Also terminate the not waiting for a station.
!  Scan 65:
gap 15:0  repeat 1 source = '3C48'  dwell = 22:00, 0, 0   /
gap 0
group 6 repeat 5
source = 'J0045+4555' dwell = 4:00, 2, 2:00 gap=16/
source = 'm31'       dwell = 3:00, 2, 2:00 gap=0  /
source = 'J0045+4555' dwell = 3:00, 2, 2:00  /
source = 'm31'       dwell = 3:00, 2, 2:00  /
source = 'J0045+4555' dwell = 3:00, 2, 2:00  /
source = 'm31'       dwell = 3:00, 2, 2:00  /
!  Close calibration cycle.
source = 'J0045+4555' dwell = 3:00, 2, 2:00  /
!
!  Another time for readbacks and a tape change (no longer needed)
!  Scan 97:
gap 15:0 source = '3C48'  dwell = 11:00, 0, 0   /
! Jodrell has a 17+ minute slew.  That causes the
! following scan to stretch out to the point of 
! triggering too long recording periods later for
! Vex stations.  Therefore, let Jodrell not make it.

gap 0
source = 'J0045+4555'  dwell = 11:00, 1, 0   /
group 6 repeat 5
source = 'J0045+4555' dwell = 4:00, 2, 2:00 gap=16 /
source = 'm31'       dwell = 3:00, 2, 2:00 gap=0  /
source = 'J0045+4555' dwell = 3:00, 2, 2:00  /
source = 'm31'       dwell = 3:00, 2, 2:00  /
source = 'J0045+4555' dwell = 3:00, 2, 2:00  /
source = 'm31'       dwell = 3:00, 2, 2:00  /
!  Final calibrator scan.
source = 'J0045+4555' dwell = 3:00, 2, 2:00  /