FSWITCH

 

         FSWITCH [Deltaf] [/TIME T] [/PHASE_TIME T1] [/RECEIVER r]
      Preliminary version for frequency switched observations,  for  up
 to four receivers.
      Use only the 100KHz Backend and/or the  autocorrelators,  do  not
 use the 1MHz or AOS backends.
      Then setup the frequency switched observations such that,  Deltaf
 gives  the offset in MHz in the range of ([-9.8,18.0] 3mm; [-19.6,36.0
 2mm;  [-29.4,54.0]  230G1).   Signal  and  reference  frequencies  are
 respectively  -Deltaf/2  and  Deltaf/2  away  from  the rest frequency
 (symmetric mode).  The subscan length T  and  the  phase  duration  T1
 (range   [0.1,2.55]  in  seconds)  may  also  be  selected.   For  the
 autocorrelators the range is [1.0;2.55].
      With the /RECEIVER option you can  select  the  frequency  offset
 Deltaf for each of the receivers.
      Note:  Use more than one(1) subscan.