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+ WIRELESS WORLD Virtual Instruments Reviewed Real-Time PC Denmark DKr. (3.00 Germany DM -3.00 G-eece Dra 680 Holhnd DFI. -2.50 Italy 16500 1Rí2.97 Spain Pts. 700.00 Singapore SS -1.25 + WIRELESS WORLD USA 55.95 APRIL.1991 £1.95 TECHNOLOGY Getting into asic ''2), AUDIO DESIGN 0 / '1 4.£ Inside ' ©Q professional i1,17111y mixers r;;i1+F t,w -r-ao' SCIENCE ^--`Í' .. Computers. in archaeology ,.,., . e .. PC ENGINEERING. Virtual instruments reviewed Real-time PC operating systems 04 9 77095 9 833004 HIGH TECHNOLOGY DATA ACQUISITION BOARDS FOR AEROSPACE, ATE, R and D, ,.. a F ` f I / a ro"5-i.5. MEASUREMENT AND TEST 9, , NEW MODEL PC74 E,: DATA ACQUISITION BOARD 90 --- l t; ,-vr 1 sii5 T/r.r./331:11).- 1=.,:: DT 2811 . COMPATIBLE '' . ' . - ,;,r ti` _d k... r w : ~cs -o L1A11 o`e.;".M ` t`. o 1° - ,d'iép The Status data acquisition program which is supplied /51 with analog input boards .: 111, provides data acquisition at ,,.;!. ; AZS // maximum board throughput and features a graphic interface, pulldown menus and context sensitive help, Status has We market high performance advanced data processing features multifunction data acquisition such as FFT (Fast Fourier boards for laboratory test, Transforms) and Chirp Z measurement and control transforms, cursor read-out of applications. The multi -channel voltage and time, zoom and pan analog input may be used for signal operations and access to the boards analysis, data logging, sensor and analog output and digital I/O lines. transducer interfacing and voltage All screen displays can be plotted. measurement. Maths co -processors supported. r Analog out Speed Bits Single -ended Differential DMA Digital I/O Programmable 12 hit 8 -bit 16 -bit stain PC -30 25KHz 12 16 i/ps --- 2 2 - NO 24 lines _ No PC -30B 30KHz 12 16 i/p --- 2 2 - YES 24 lines No PC -30C 100KHz 12 16 i/ps --- 2 2 - YES 24 lines r No PC -30D 200KHz 12 16 i/ps --- 2 2 - YES 24 lines No * PC-30DS 200KHz 12 16 i/ps --- 2 2 - YES 24 lines No **PC-30DS/4 200KHz 12 16 i/ps --- 2 2 - YES 3-4 lines No PC-30PGL 200KHz 12 16 i/ps 8 i/ps 2 2 - YES 24 lines 1. 111, 100 1000 PC-301'G II 200KHz 12 16 i/ps 8 i/ps 2 2 - ES 24 lines -1, 2, 4, 8 PC -26 25KHz 12 16 i/p_. ---- - - - NO No No PC -7411A 30KHz 12 16 i/ps 8 i/ps 1 2 - - NO 16 lines 1, 2, 4, 8 PC-74LA 30KHz 12 16 i/ps 8 i/ps 2 - - NO 16 lines -L.10, 100, 500 PC -7411C 80KHz 12 16 i/ps 8 i/ps 2 - - YES 16 lines 1, 2, 4, 8 PC-74LC 80KHz 12 16 i/ps 8 i/ps 2 - -. YES 16 lines 1, 10, 100 500 PC -32/H 2,5KHz 16 16 i/ps 8 i/ps - - I NO No 1, 2, 4, 8 PC -32/L 2 5KHz 16 16 i/ps 8 i/ps - - I NO No , 10, 100, 500 _ I PC -33/I I 2,5KHz 16 16 i/ps 8 i/ps - - - NO No 1. 2, 4, 8 PC -33/L 2,5KHz 16 16 i/ps 8 i/ps - - - NO No 1, 10, 100, 500 PC -34 -- --- ---- - - I NO No --- PC-66 ----- -- --- --- 12 - - NO PC -66A ---- -- --- ---- 8 - - NO No --- .. * Has 16 simultaneously sampled inputs ** Has 4 simultaneously sampled inputs TEN DEXTER AVENUE WATERTOWN, MA USA 50 High SI CP Edgware 02172-4107 Middlesex TEL: 617-924-1155 HA8 7EP Citadel FAX: 617-924-1441 England United FlErhcnic /ncttc;rries Telephone: 081-951-1848 Products Ltd CONTENTS FEATURES INSIDE MIXERS 280 ON THE RIGHT TRACK 311 A top -end mixing console should represents the highest Yachtsmen are increasingly looking to GPS for form of audio design. Soundcraft's chief designer Doug guidance. How have the manufacturers responded? Self describes the technology of acoustic excellence. CHIPPING AT THE PAST 286 .\ Archaeology is ripe for automation. A typical dig measurements required \ involves thousands of positional h . to produce a 3-1) image of the site. Archaeologist s''-_ { Helen Geake and technology writer Elisabeth Geake bring past and present together. N THE SILICON TRAIL 791 IC design can be implemented in silicon in a variety of ways. Nigel Howell explains the pros and cons of different approaches. 0S9000: REALTIME PC 795 Lack of a real-time OS for the PC has held back r Q industrial application. but l\licroware's Stephen i4- ..:...-_. ;is.. _ \1ontgomery says OS -9(100 will change all that. INTERFACING WITH C 320 PC REVIEW - MAXSIM 300 Howard Hutchings continues his definitive series on Maxsim is designed to model and analyse the the use of the C programming language by electronics performance of systems in frequency and time domains. engineers. John Anderson tries it out and explains his reservations AUTOMOTIVE AUTOMATION 336 PC REVIEW - BLUE CHIP DMM 304 The car makers have always been able to produce a Blue Chip Technology's intelligent DM\I is one of the product which could move as fast as their marketing new breed of virtual instruments for the PC, offering departments wanted. Electronics has given the motor voltage and current measurement. chart recording and Indust y something else to sell cat. By Tom Woodford. data logging. FM RADIO: A BETTER TUNE 345 PC REVIEW - PCL860 4.5 DVM 307 John Linsley Ilood continues his short series on FM I -low well does the Fairchild 4.5 digit voltmeter board receiver design. looking at the way in which component stand up to scrutiny:' Allen Brown investigates. development has influenced technique. REGULARS COMMENT 267 dead duck grouse, testing tintes. diode nonsense. and Researching priorities unsound models. RESEARCH NOTES 269 NEW PRODUCT CLASSIFIED 351 I lalf-baked universes. supercool scientists, better CCDs New products at -a -glance. and mega -mega atomic memories. RF CONNECTIONS 356 UPDATE 275 Exploiting the spectrum above 30GHz. mobile comms Teraflops for euro -supercomputers. rise strategy. confusion and working in the rain. soaking up the sun. 20.000 lasers on a chip. Plus a special report from the ISSCC. San Francisco. APPLICATIONS 315 In next month's issue. As :et only the military Adding a range switch to a l)PM. function generator superpower; have made use cf Over-The-Hori7on- and turning off mosfets. Radar. The Australians are ncw planning to spend nearly £400 million on an I IF radar system to protect CIRCUIT IDEAS 331 their sparsely populated rorihen coastlines. Digital phase meter. fuse blown indicator. composite The impetus behind the radiating monster is feedback :mplifier. battery life extender. precision civilian: the Australian governiient hopes to use the pulse width generator and high frequency switch. radar to detect illegal aircraft running drugs into the Northern Territories. H. wever, the massive pulsed LETTERS 3.40 HF power.spells bad news for communications Back to the future. social worries. supporting Unix. systems operating around 14MHz. April 1991 ELECTRONICS \\'ORLD+\\'IRELESS WORLD 265 Sg rfle programmers are more powerful th others....... P i The CP1128 is qualified by all major device manufacturers - like AMD, Lattice, Samsung and TI. This means'that you can feel secure that you'll be programming exactly as the manufacturer specifies and you won't get field failures from poorly programmed devices. It. programs over 2000 different devices - GALs, PALs, EPROMs, ERASICs, EPLDs Nothing's worse than finding that your shiny new programmer want work with the device you need. We've added 'more than 600 devices during the last 4 months and we're working hard to keep up with the manufacturers. We offer an absolutely free, lifetime, software update service. When you use a BP programmer you get on demand support for new devices as we produce the software. The new software costs you nothing and we'll continue to support you as long as you own the programmer. Last, but not least, the CP1128 costs less than £1000. It costs £985 and has a years guarantee. Like we've always said - power, reliability and value for móney. MUTEK (MSS) Ltd. Frome Road, Bradford on Avon, Wilts. BA18 1LE 02216 6801/6808 or fax -5083 CIRCLE NO. 126 ON REPLY CARD COMMENT CONSULTING EDITOR Philip Darrington Researching priorities 081-6618632 The Science and Engineering Research directly in ceramic exhaust valves for EDITOR Council has recently been involved in vehicle engines, uniquely efficient Frank Ogden the yearly flurry of indignation over industrial production. hegemony in 081-661 3128 underfunding allegations. In essence, advanced semiconductor supplies. SERC is faced with effective budget cuts One could argue that any of these DEPUTY EDITOR of up to £30 million which temporarily achievements is more worthy than the Jonathan Campbell placed the Daresbury Nuclear Structure detecting of 9 neutrino, the analysis of 081-6618638 Facility under threat of closure. The radiation from a black hole or the Dareshury NSF provides a synchrotron knowledge that things aren't quite what DESIGN & PRODUCTION source for UK particle physicists. they seem at the speed of light. Alan Kerr Ramifications of the argument include Neither can it be taken for granted that an alleged overcommitment by SERC to big science generates useful spin-offs with EDITORIAL ADMINISTRATION international big science projects, cost effectiveness. Although the Apollo Lindsey Gardner principally CERN at Geneva, which have progran me resulted in non-stick frying 081-6613614 experienced greater cost inflation than pans. it might he said that a down -to -Earth SERC's UK commitments. Because related space programme costing the same ADVERTISEMENT MANAGER Britain's percentage contribution is fixed amount of money could have resulted in Jan Thorpe by international agreement, the effect has earth resources technology plus non-stick 081-6613130 been to reduce differentially the funds frying pans.
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