ASTRO

The software ASTRO can be used to simulate the receiver/correlator configuration. 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The previous LINE command has been replaced by several new commands (see internal help; the following description applies to the current receiver system).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, 1GHz bandwidth). Default is 2006:

• LINE: receiver tuning
• NARROW: selection of the narrow-band correlator inputs
• SPECTRAL: spectral correlator unit tuning
• PLOT: control of the plot parameters.

A typical session would be:

   ! choice of receiver tuning
   line xyz 230 lsb low 6500

   ! choice of the correlator windows
   narrow Q3 Q3             

   ! correlator unit #1, on entry 1
   spectral 1  20 520 /narrow 1   

   ! correlator unit #2, on entry 1
   spectral 2 320 260 /narrow 1   

   ! correlator unit #3, on entry 2
   spectral 3  40 666 /narrow 2   
   ...