The software ASTRO can be used to simulate these OBS commands. Astronomers are urged to download the most recent version
of GILDAS at ../IRAMFR/GILDAS to prepare their proposals.
The previous LINE command has been replaced by several new commands (see internal help; the following description applies to the current receiver system). The behavior of the LINE command can be changed by the SET PDBI 1995|2000|2006 command, that selects the PdBI frontend/backend status corresponding to years 1995 (old receivers, 500 MHz bandwidth), 2000 (580 MHz bandwidth), 2006 (new receivers and new IF processor, 3.6GHz bandwidth). Default is 2006.
A session to design the above correlator setup would be:
LINE HCOP-HCN 87.0 LSB 6500 ! Define the receiver tuning ! ASTRO displays the full 3.6 GHz frequency coverage by WideX NARROW Q1 Q3 ! Define the quarters covered by the narrow-band correlator SPECTRAL 1 160 1020 /NARROW 1 SPECTRAL 2 20 210 /NARROW 1 SPECTRAL 3 20 770 /NARROW 1 SPECTRAL 4 160 350 /NARROW 1 SPECTRAL 5 160 475 /NARROW 1 SPECTRAL 6 40 750 /NARROW 2 SPECTRAL 7 320 400 /NARROW 2 SPECTRAL 8 320 925 /NARROW 2 ! Choice of the correlator windows