From owner-freebsd-chat Sun Feb 9 08:23:43 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id IAA22676 for chat-outgoing; Sun, 9 Feb 1997 08:23:43 -0800 (PST) Received: from genesis.atrad.adelaide.edu.au (genesis.atrad.adelaide.edu.au [129.127.96.120]) by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id IAA22668 for ; Sun, 9 Feb 1997 08:23:39 -0800 (PST) Received: (from msmith@localhost) by genesis.atrad.adelaide.edu.au (8.8.2/8.7.3) id CAA18358; Mon, 10 Feb 1997 02:53:31 +1030 (CST) From: Michael Smith Message-Id: <199702091623.CAA18358@genesis.atrad.adelaide.edu.au> Subject: Re: Wradar! In-Reply-To: from Kim Culhan at "Feb 9, 97 09:38:44 am" To: kimc@w8hd.org (Kim Culhan) Date: Mon, 10 Feb 1997 02:53:30 +1030 (CST) Cc: chat@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL28 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-chat@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk 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 [[