! ==========================================================
! ==========  Example keyin format file for a  =============
! ==========  Phase-referenced EVN experiment  =============
! ==========     (strong source - 128 Mb/s)    =============
! ==========================================================

! ==========================================================
! =================  Cover Information  ====================
! ==========================================================

version  = 1
expt     = 'Phase-referencing of my favourite strong source'
expcode  = 'EO999'
obstype  = 'VLBI'
piname   = 'A.N. Observer'
address1 = 'An Institute'
address2 = 'A Street'
address3 = 'A Town'
address4 = 'A Country'
phone    = '555 1000'
obsphone = '555 1000'
email    = 'anobserver@institute.country'
fax      = '555 1001'
obsmode  = 'Phase-referencing of a source at 18cm (128 Mb/s)'
note1    = 'Place additional information here (note2-4 available)'

! ==========================================================
! ==============  Correlator Information  ==================
! ==========================================================

correl   = 'JIVE'
coravg   = 2
corchan  = 16
cornant  = 8
corpol   = 'off'
corwtfn  = 'uniform'
corsrcs  = 'from schedule'
cortape  = 'DAT'
corship1 = 'An Institute'
corship2 = 'A Street'
corship3 = 'A Country'
cornote1 = 'Place special requirements here (cornote2-4 available)'

! ==========================================================
! ==================  Program control  =====================
! ==========================================================

! Allow SCHED to overwrite existing files

overwrit

! Print start and end elevation, time on source and slew time
! in summary file

sumitem  = el1, el2, dwell, slew

! Might prefer to see, e.g. start elevation and time on source 
! before scan start (or how late antennas are on source):

!sumitem = el1, early

! ==========================================================
! ===================  Station Catalog  ====================
! ==========================================================

! Get stations from the DEFAULT catalog

stafile = $SCHED/catalogs/stations.dat

! List stations

stations = JODRELL1,WSTRBORK,EFLSBERG,ONSALA85,MEDICINA,TORUN,
           SHANGHAI,URUMQI

! ==========================================================
! ===================  Source Catalog  =====================
! ==========================================================

! Get source coordinates for fringe finders, phase-reference
! source, etc, from the DEFAULT catalog

srcfile = $SCHED/catalogs/sources.vlba

! But my favourite strong, polarised source isn't in the DEFAULT
! catalog so I shall specify that separately

srccat /
source='B0218+357'
        ra=02:21:5.6376 dec=35:56:13.8437 equinox='j2000' /
endcat /

! ==========================================================
! ==================== Setup Information ===================
! ==========================================================

! Get frequency information from the DEFAULT catalog

freqfile = '$SCHED/catalogs/freq.dat'

! Construct frequency setup
! 4 8-MHz channels, 2-bit sampling and dual polarisation => 128 Mb/s

setinit='eo999.18cm' /
        band='18cm'
        nchan=4
        bbfilter=8
        bits=2
        pol='dual'
        pcal='1MHz'
        barrel=roll_off /
endset /

! ==========================================================
! =================  Initial Scan Information  =============
! ==========================================================

year=2007
month=12
day=25
start=10:00:00

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

source='J0204+3649' dur=00:02:00 gap=00:00:00 setup='eo999.18cm'/

! For amplitude calibration purposes, at MkIV EVN stations it 
! is recommended to insert regular gaps for Tsys calibration 
! approximately every 15 minutes.
! The telescopes must be on source by the start of the scan
! after the gap in order to make a valid Tsys calibration.
!
! Here a gap is inserted almost every phase-reference cycle.
!
! The phase reference cycles are at least 10 minutes long as
! this is the minimum time required by Jb1 (Lovell telescope)
! slewing limitations.

! Cycle the next 2 scans 24 times
group 2 repeat 24
source='B0218+357'  dur=00:07:20 gap=00:00:00 /
source='J0204+3649' dur=00:02:00 gap=00:00:40 /

! include observations of a fringe-finder (0234+285)
! and a bright unresolved source for amplitude calibration purposes
! (J0205+3212)
source '0234+285'   dur=00:10:00 gap=00:01:10 /
source 'J0205+3212' dur=00:10:00 gap=00:01:10 /

source='J0204+3649' dur=00:02:00 gap=00:01:00 /

group 2 repeat 20
source='B0218+357'  dur=00:07:20 gap=00:00:00 /
source='J0204+3649' dur=00:02:00 gap=00:00:40 /

! include observations of a fringe-finder (DA193)
! and a bright unresolved source for amplitude calibration purposes
! (J0205+3212)
source 'DA193'      dur=00:10:00 gap=00:03:30 /
source 'J0205+3212' dur=00:10:00 gap=00:04:20 /

source='J0204+3649' dur=00:02:00 gap=00:00:50 /

group 2 repeat 2
source='B0218+357'  dur=00:07:10 gap=00:00:00 /
source='J0204+3649' dur=00:02:00 gap=00:00:50 /

group 2 repeat 2
source='B0218+357'  dur=00:07:00 gap=00:00:00 /
source='J0204+3649' dur=00:02:00 gap=00:01:00 /

group 4 repeat 6
! gaps for Tsys calibration every 20 minutes
! (large telescope slewing times get longer at higher elevations
!  ==> gap increased to 70s)
source='B0218+357'  dur=00:06:50 gap=00:00:00 /
source='J0204+3649' dur=00:02:00 gap=00:01:10 /
source='B0218+357'  dur=00:08:00 gap=00:00:00 /
source='J0204+3649' dur=00:02:00 /

! ==========================================================
! ======================  End of keyin file  ===============
! ==========================================================