!  jvla.key
!
!  This is a file to schedule a VLBI observation on the VLA
!  and VLBA.  It uses the WIDER correlator to provide phased
!  array output on the VLA.
!
!  This file started from early testing of the JVLA capability
!  for VLBI.  It will likely evolve fairly rapidly.
!  It was first set up as an example on May 23, 2012.  RCW.
!  Modified for more chance of success in actual observing on
!  Oct. 27, 2012 - mainly by matching bandwidths.  It uses
!  32 MHz channels from the WIDAR to match 4 of the 16 PFB
!  outputs from the RDBE on the VLBA.  There will be another
!  example of use with the DDC.

!  Change to 1 MHz pcal  July 7, 2014

 overwrite
! ==========================================================
! =================  Cover Information  ====================
! ==========================================================
 version = 1
 expt     = 'jvla vlbi test.'
 expcode  = 'jvla'
 obstype  = 'VLBA'
 piname   = 'Amy Mioduszewski'
 address1 = 'NRAO'
 address2 = 'PO Box 0'
 address3 = 'Socorro, NM 87801'
 phone    = '575 835 7263'
 obsphone = '575 835 7263'
 email    = 'amiodusz@nrao.edu'
! ==========================================================
! ==============  Correlator Information  ==================
! ==========================================================
 correl   = 'Socorro'
 coravg   = 2
 corchan  = 256
 cornant  = 12
 corpol   = 'on'
 corsrcs  = 'standard'
 corship1 = 'Amy Mioduszewski'
 corship2 = 'P.O. Box 0'
 corship3 = 'Socorro, NM 87801'
 cortape  = 'DAT'
 corwtfn  = 'Uniform'
! ==========================================================
! ==================== Input Catalogs  =====================
! ==========================================================
! Standard source catalogs are sources.gsfc and sources.rfc.
! This schedule does not need extra aliases so use RFC.
srcfile  = $SCHED/catalogs/sources.rfc
stafile  = $SCHED/catalogs/stations_RDBE.dat
freqfile = $SCHED/catalogs/freq_RDBE.dat

! ==========================================================
! ==================== Setup Information ===================
! ==========================================================
!  This setup uses the RDBE with the PFB personality on the VLBA
!  with 16 by 32 MHz channels.  If the mixed bandwidth mode on
!  DiFX is activated, the VLA could match the bandwidth with 
!  four 128 MHz basebands.  But for now, we must use matched 
!  bandwidths and a maximum of 4 channels for a total of
!  only 128 MHz and 512 Mbps from the VLA.  The sideband 
!  must be upper, so use a high side LO on the VLBA to counter 
!  the required LSB baseband channels from the PFB.  Here we target
!  the old 6cm standard of 4990 MHz which can be reached with an
!  LO of 5600 on the VLBA.  An LO of 5900 would also do it, but 
!  would put 4990 in a crossover region.  Normally a low LO (maybe
!  4100 or 4400) would be used on the VLBA, but that would not 
!  allow matched sidebands.

!  Aug. 7, 2014:  Something was only done partially at some point and 
!  the frequencies specified were below the 4990 range.  Perhaps the 
!  BBCs were originally set for a 5900 MHz first LO and then not changed
!  when going to 5600.  This resulted in 4990, the old standard frequency,
!  and the one at which gains are measured, being above all basebands.  
!  With 5900 MHz first LO, 4990 would have an IF frequency of 910 MHz 
!  which is near the center of the bands chosen.  Today I shifted
!  to use the 5900 MHz LO and keep the original bbsyn settings.
!  I also had to change the order of the VLA channels to keep ascending
!  frequency order.  Not sure what happened there either.

!  For possible future use - all PFB basebands in the two posible orders
!  (only half of the frequencies can be used with dual polarization):
!  bbsyn    = 528.0, 528.0, 560.0,  560.0, 592.0,  592.0,  624.0,  624.0, 
!             656.0, 656.0, 688.0,  688.0, 720.0,  720.0,  752.0,  752.0
!             784.0, 784.0, 816.0,  816.0, 848.0,  848.0,  880.0,  880.0, 
!             912.0, 912.0, 944.0,  944.0, 976.0,  976.0, 1008.0, 1008.0
!  bbsyn    = 1008.0, 1008.0, 976.0,  976.0, 944.0,  944.0, 912.0,  912.0,
!              880.0,  880.0, 848.0,  848.0, 816.0,  816.0, 784.0,  784.0,
!              752.0,  752.0, 720.0,  720.0, 688.0,  688.0, 656.0,  656.0,
!              624.0,  624.0, 592.0,  592.0, 560.0,  560.0, 528.0,  528.0              

setini = trdbea.6cm /
  dbe      = 'rdbe_pfb'
  band     = '6cm'
  nchan    = 16   
  bbfilt   = 32.0  
  bits     = 2
  sideband = L
  netside  = U
  pol      = dual
  firstlo  = 5900.0
  bbsyn    = 1008.0, 1008.0, 976.0,  976.0, 944.0,  944.0, 912.0,  912.0,
              880.0,  880.0, 848.0,  848.0, 816.0,  816.0, 784.0,  784.0
!   pcal     = '5MHz' ! Helps make bands identifiable
  pcal     = '1MHz'  !  Far less power in pulse cal tones.
  station  = vlba
    /
!  Use the same setup at the GBT.  It can do it as it likes a high LO.
  rchan = A  lchan = C
  station  = gbt_vlba, gbt_cold
    /
!  For the VLA, use only 4 channels as per the original WIDAR constraints.
  pcal = off
  nchan = 4
  ifchan = A, C, B, D
  fe     = '6cm', '6cm', '6cm', '6cm'
  bbfilt = 32.0
  bbsyn = 912, 912, 880.0, 880.0
  dbe = widar
  station = vla27
    / 
endset /

! ==========================================================
! ============== Program Control and Start =================
! ==========================================================
minpaus 1
sumitem='el1', 'dwell'
YEAR=2012 MONTH=4  DAY=25  START=17:00:00

! ==========================================================
! ========================  The Scans  =====================
! ==========================================================

  stations = VLBA_MK,VLBA_BR,VLBA_OV,VLBA_KP,VLBA_FD,
             VLBA_PT,VLBA_LA,VLBA_NL,VLBA_HN,VLBA_SC,GBT_VLBA,VLA27

setup = 'trdbea.6cm'

! First use the vlamode to indirectly set the phasing intent.
! 'va' is for autophasing.  'vx' is to coast on the last phase.

group 3 repeat 2
 vlamode = 'va'
 source = 'J0217+7349' 	dwell = 300  /
 vlamode = 'vx'
 source = 'J0217+7349' 	dwell = 300  /
 source = 'J0217+7349' 	dwell = 300  /