Date: Mon, 10 Feb 1997 02:53:30 +1030 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: kimc@w8hd.org (Kim Culhan) Cc: chat@FreeBSD.ORG Subject: Re: Wradar! Message-ID: <199702091623.CAA18358@genesis.atrad.adelaide.edu.au> In-Reply-To: <Pine.BSF.3.95.970209093654.29937B-100000@moonpie.w8hd.org> from Kim Culhan at "Feb 9, 97 09:38:44 am"
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Kim Culhan stands accused of saying: > > > > > Would be nice if you could place the sticker there and maybe a link > > > which points to a page describing your machine ? > > Yes, what part of the system do the FreeBSD machines control ? All of it; the transmitter is 12x6kw phase-controlled power blocks driving 6 independent clusters of the array (144 elements total), each of the power blocks is hung off an RS-485 bus run by the BSD box. On the receiver side, the receivers are also on the '485 bus, and the data acquisition system (12 channels at 6Ms/s) is run off a dual 16-bit digital I/O card in the same BSD box. The system is a 120MHz pentium with 64M of memory and a 2G disk (local spool only 8) Here's a few salient observations (note that the system is currently suffering SCSI problems that limit its uptime to a few days at most) : mstradar:/home/radar>uptime 5:16PM up 4 days, 3:36, 1 user, load averages: 0.38, 0.48, 0.48 mstradar:/home/radar>ps aux USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND radar 181 40.4 0.0 3768 2492 ??- RN Wed01PM 863:13.79 exptd: experim radar 203 6.8 0.0 13036 9632 ?? RN Wed01PM 1538:45.94 /usr/local/rs The first of those is the acquisition program, the second is the analysis. Here's a few days of raw data : mstradar:/bifrost/data1>ls -l total 2628832 -rw-r--r-- 1 radar sys 159207984 Feb 7 00:55 19970206_fca_1200.raw -rw-r--r-- 1 radar sys 572187600 Feb 7 01:01 19970206_fca_300.raw -rw-r--r-- 1 radar sys 159207984 Feb 8 00:56 19970207_fca_1200.raw -rw-r--r-- 1 radar sys 572187600 Feb 8 01:01 19970207_fca_300.raw -rw-r--r-- 1 radar sys 159207984 Feb 9 00:57 19970208_fca_1200.raw -rw-r--r-- 1 radar sys 572187600 Feb 9 01:01 19970208_fca_300.raw -rw-r--r-- 1 radar sys 108164208 Feb 9 17:16 19970209_fca_1200.raw -rw-r--r-- 1 radar sys 388096688 Feb 9 17:18 19970209_fca_300.raw > > If/when I/we put something up on our 'real' homepage, I'll certainly > > submit it - this was just an FYI, not a grab for ad space. (Hmm, how > > many -chat readers are likely to be looking for an MST+ radar system? > > 8) > > Hmm.. I'd like one, whats the price range ? :) Thet depends on how ambitious you want to get 8) A small system may run you a lot less than US$100K, for a big site like Esrange you'll be spending lots on earthworks and antennae, and the gear itself will pale by comparison 8) -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[
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