Table Of Content

AD-A265 921 Marine Physical Laboratory LOW POWER DIGITAL RECORDER DEVELOPMENT W. S. Hodgkiss FinalR eport to the Office of Naval Research ContractN 00014-89-D- 142 (DO#22) DTIC "(cid:127) SJUENL E1 C7 1T99E3 MPL-U-5/93 JUN17 9 January 1993 Approved for public release; distribution unlimited. University of California, San Diego 6 Scripps Institution of Oceanography 93-13594 93tt iE REPORT DOCUMENTATION PAGE ,ForLV Pubkrpci, tq:stgn 1ort he. coulestlon, 01l nm~thon Isg (cid:127)trited to avwug.~ 1 hor pw r .s~nI ndutudg the tat. k~ rems~ng Ina(cid:127).u.tou, mWei.xmtiige .. te(cid:127).ods. mr gld nr d ua mint~l~g the data ,-s ad. atd oo4pe~ng end rw.Iaelng lt.(cid:127) ou4e~clon c4 bnlrntuonS. en w(cid:127)ntt~ae~ c*m,rot. ng thIs b,ttd~n I(cid:127) (cid:127)snao ry tet n of ol=h mknt.o(cid:127) f Incluing augg.~cn k~rr e~icetg Oil. btxe to WM'(cid:127)tngxto *4eenk.aafln Sw(cid:127)e tetn ouet llommo Opu~Sorf and Kzo,1215 JkdzeW~ Davis ay, Suite 1204, Atilton, VA 22202-4302 and to ft Ohoe of Mamne I and 18 Ppkrwo* ROAW P ?04"18 Vah(cid:127)foý,n' MC2 0503. 1. Agency Use Only (Leave Blank). 2. Report Date. 3. Report Type and Dates Covered. January 1993 Final Report "4T. itle and Subtitle. 5. Funding Numbers. Low Power Digital Recorder Development N00014-89-D-0142 (DO #22) 6. Author(s). William S. Hodgklss Project No. Task No. 7. Performing Monitoring Agency Names(s) and Address(es). a. Performing organizstion Report Number. University of California, San Diego Marine Physical Laboratory Scripps Institution of Oceanography MPL-U-5/93 San Diego, California 92152 9. Sponsoring/Monitoring Agency Name(s) and Address(as). 10. SponsqingIMonitoring Agency p e. Office of Naval Research Department of the Navy 800 Not :h Quincy Street Arlington, VA 22217-5000 Code 122D 11. Supplementary Notes. 12a. DistributioniAvailability Statement. 12b. Distribution Code. Approved for public release; distribution is unlimited. 13. Abstract (Maximum 200 words). The objective of this program was to assist NOSC (Now NRaD, San Diego) in the development and testing of a digital recorder suitable for extended low-power remote operations where low frequency acoustic or engineering data must be recorded. 14. Subject Terms, 15. Number of Pages. low-power digital data recorder 1 16. Price Code. 17. Se jity Classification 18. SecuritlClassification 19. Security Classification. 2;. L of Abstract. ot~epor. oe~T his P3a 9e. of Abstract.. ý;nclassified Unclassified Unclassified None NSN 7540-01-280-5600 Standard Form 298 (Rev. 2-89) Prescribed by ANSI Std. 239-18 298-102 MPL-U-5/93 LOW POWER DIGITAL RECORDER DEVELOPMENT NT-S F NTS CRA&I DTIC TAB Unanflounced 0 W. S. H. odg..k. iss (Prin.c..i pal Inv..e stigato..r..). Ju.s..ti.f.i cati.o.n....... By Final Report to the Distribution Office of Naval Research Contract N00014-89-D-0142 (DO$22) Availability Codes D. is Avail a-nd/--o" r- D~sIt Special JDTTC QT(cid:127)ATJ'` INSPECTED 2a . RESEARCH SUMMARY The objective of this program was to assist NOSC in the development and testing of a digital recorder suitable for extended low-power remote operations where low frequency acoustic or engineering data must be recorded. The Marine Physical Laboratory has had extensive experience in low-power data collection instrumentation. As an example, the new generation of ocean bottom seismometers (OBSs) designed and fabricated by MPL required a low-power design suitable for operation on the deep sea floor. Recently, MPL has been involved in the development of an autonomous recording capsule (ARC) for use where substantial amounts of data are to be recorded [I]. In this program, MPL assisted NOSC in the development and testing of a low-power, digital data recorder. First, the digital data recorder specifications were defined. In order to preset ve flexibility for future operations, it was decided to modify the design described in [1]. An Exabyte 8500, 5 GB capacity, 8 mm cassette tape drive was used as the recording medium. Second, a complete recording system (along with a spare) was fabricated and tested. Subsequently, these recording systems were deployed by NOSC during an engineering sea test. References [11) R. Currier, R. Harriss, C. Nickles, and W. Hodgkiss, "An autonomous seafloor recording capsule," Proc. OCEANS'91h 1681-1686 (1991). ONRIMPL. REPORT DISTRIBUTION Office of Naval Research (3) Department of the Navy Ballaston Tower One 800 North Quincy Street Arlington, VA 22217-5000 LCDR F.J . Diemer, Code 122D Administrative Grants Officer (1) Office of Naval Research Resident Representative N66018 University o1 California, San Diego (Mail Code 0234) 8603 La Jolla Shores Drive San Diego, CA 92093-0234 Director Naval Research Laboratory Atten: Codie 2627 Washington, D.Cq. 20375 Defense Technikal Information Center (12) Building 5, Cameron Station Alexandria, VA 22314