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Re: Re[2]: NOAAPORT and LDM

On Thu, 25 Feb 1999, Gregory Grosshans wrote:

>      Robb,
>      
>      I've recently obtained code, after much paper work, from FSL that 
>      injects the NOAAPORT data feed into the LDM queue as a specified feed 
>      type (e.g. FSL5).  However, pqact never sees or acts on any items that 
>      i've configured in the pqact.conf file to work on the FSL5 data 
>      stream.  

Greg,

Are you sure the data is getting into the LDM queue?  What's the output
of:

% ldmadmin watch

If it isn't showing FSL5 product headers then no data is entering the
queue.The product headers will show the feed type and pattern.  Are there any
error log messages?  If no product headers then the process of entering
the data to the queue is the culprit, at that point I would contact FSL.
I don't know anything about the FSL code. 



>      
>      From what I've been told LDM waits until it sees a control-A and then 
>      goes into a special state and processes data until it receives a 
>      control-C.  From what I can tell the data coming off of NOAAPORT 
>      doesn't contain control-As or Cs.  

Again this is FSL's implementation of reading NOAAport and making
products.

>      
>      If NOAAPORT is missing these control characters, is that why pqact 
>      isn't doing anything with the data in the LDM queue?  Did UNIDATA or 
>      SSEC have to modify the SSEC/UNITDATA hardware/software to place 
>      control characters at the beginning and end of each file for LDM and 
>      the IDD to work correctly?

The SSEC processes the NOAAport products by eating the Np header and then
making a WMO header for the product with the control chars.
>      
>      As an example, I modified pqact.conf to send email of the ACUS1, 
>      ACUS2, and ACUS3 bulletins when received from the FOS and 
>      NOAAPORT/FSL5.  I only receive the bulletins from the FOS feed.  
>      Similarly, I configured pqact.conf to decode metar obs from the FSL5 
>      feed but it doesn't work, yet I already decode metar obs from the FOS 
>      and AFOS feeds.
>      
It appears that no NOAAport data is entering the LDM.


Robb...

>      Thanks,
>      Gregg
>      ----------------------------------------------------------------------
>      Gregory Grosshans
>      NWS/NCEP/Storm Prediction Center
>      Norman, OK        
>      405-579-0720     fax : 405-579-0700
>      address@hidden
>      address@hidden         
>      /* standard disclaimer */
>      ----------------------------------------------------------------------
>       
>      
> 

===============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
address@hidden             WWW: http://www.unidata.ucar.edu/
===============================================================================