Summary of Contents for ohmex SONARMITE DFX dual beam
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PORTABLE BLUETOOTH ECHO SOUNDER Ohmex is a company formed to manufacture and distribute products designed by Lymetree Associates established in 1982 founded on technological innovation and design. The designer prides themselves on being the first to produce products in the field of instrumentation and software used within the Earth Science sectors.
SonarMite DFX v1.20 (c) Lymtech 2016 Contents INTRODUCTION ............................. 4 Is Dual Frequency required ? ........................5 Can mud thickness can be measured with Dual Frequency ? ..............5 Typical Use of the Equipment ........................5 Equipment Supplied ..........................6 Accessories ..............................
The introduction by Ohmex of the SonarMite, the worlds first truly portable echo sounder system, has been a hard act to follow and it remains the portable instrument of choice in many survey companies around the world.
SonarMite DFX v1.20 (c) Lymtech 2016 The SonarMite DFX instrument uses the same 'Smart' integrated transducer technology used in previous systems, in addition to highly reliable bottom tracking algorithms using DSP techniques the system also outputs a water temperature measurements with associated with every depth measurement made.
SonarMite DFX v1.20 (c) Lymtech 2016 boats hull. Survey sounders are designed to provide a large number of pings with as little processing of the raw data as possible to define the bottom in as fine detail as possible. Of major concern in a survey sounder is a narrow beam width to prevent averaging of the returned signal.
• Portable internal NiMh battery pack and charger. SonarMite DFX dual beam echo sounder The SonarMite DFX is a compact, portable, low power system for use in shallow water hydrographic surveys, it's small size and low power requirements make the system easy to deploy and transport to remote or inaccessible sites.
SonarMite DFX v1.20 (c) Lymtech 2016 INSTALLATION & USE This chapter describes how the SonarMite Portable Echo Sounder would normally be installed and used. The typical way in which the device can be used for hydrographic surveying applications, is as a „Dumb‟ echo sounder connected via a serial cable/Bluetooth Link to a PC or PDA running data logging and display software.
SonarMite DFX v1.20 (c) Lymtech 2016 • Range and Bearing from hand held laser plus Tide plus Time • Simple event marking past known position markers The basis on which all data correlation is achieved is internal time base, so particularly when using the SonarMite with GPS data the data logger clock should be synchronized to GPS time (UTC).
SonarMite DFX v1.20 (c) Lymtech 2016 DEPTH TRANSDUCER The SonarMite DFX system uses a „boat‟ shaped transducer in a three bolt mount fitting for fixing to an outrigger of a light boat or more commonly in a temporary mounting using a survey detail pole.
SonarMite DFX v1.20 (c) Lymtech 2016 When mounting the transducers the following points should be taken into consideration … • How near to the Metacentre of the boat is the transducer • Is any turbulence generated around or in front of the transducer when moving •...
SonarMite DFX v1.20 (c) Lymtech 2016 BLUETOOTH INTERFACE The SonarMite deck box provides a fully compliant wireless Bluetooth™ Class 1 Master and Slave function via a simple UART or RS232 interface. The Bluetooth Wireless will provide connectivity to any device supporting either a UART or RS232 interface. The SonarMite Bluetooth Serial is compatible with all other device supporting Bluetooth™...
SonarMite DFX v1.20 (c) Lymtech 2016 The SonarMite Bluetooth Serial Terminal encapsulates all of the Bluetooth™ protocols on a dual chip, providing a simple serial interface to the host, therefore removing any need for software drivers or experience in developing wireless technology Bluetooth - actual range of the device.
SonarMite DFX v1.20 (c) Lymtech 2016 SERIAL CABLE INTERFACE In addition to Bluetooth on the DFX all SonarMites have a serial interface which can connect to a computer using RS232 protocol, this may also be provided by the USB serial interface cable available as an accessory.
SonarMite DFX v1.20 (c) Lymtech 2016 CONNECTIONS The only accessible connectors on the SonarMite are those on the front of the machine referred to as the „Transducer or TXR‟ and „Computer or PC‟ connections. There are no user connections or serviceable parts within the SonarMite body itself. ‘PC’...
SonarMite DFX v1.20 (c) Lymtech 2016 APPENDIX SonarMite Settings The SonarMite when connected via Bluetooth to a serial communications program such as Hyperterminal has a basic set of simple dual character commands used to set the basic parameters of the instrument. Flash Memory The instrument contains an area of configuration data held within its semi-permanent FLASH memory area.
SonarMite DFX v1.20 (c) Lymtech 2016 ☺ (^L)oad Pressing ^L (Contol L) will reload the Flash memory into the current working memory. (only available in the SYS> output mode). ☺ (^S)ave Pressing ^S (Contol S) will save the current working memory area to Flash memory to become the system settings on reboot.
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SonarMite DFX v1.20 (c) Lymtech 2016 Format 4 Odom SBT mode (e.g. et Format 5 Odom DBT mode Format 6 Deso 25 mode (e.g. DA 0.48 m) Page 21 of 26...
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SonarMite DFX v1.20 (c) Lymtech 2016 Format 7 Raw txr Data mode (e.g. any text line in here 0.48 116) $SDXDR,D,31.06,M,XDHI,D,30.35,M,XDLO,C,15.15,C,WTHI*76 $SDXDR,D,31.03,M,XDHI,D,30.35,M,XDLO,C,15.15,C,WTHI*73 $SDXDR,D,30.99,M,XDHI,D,30.33,M,XDLO,C,15.15,C,WTHI*77 $SDXDR,D,30.97,M,XDHI,D,30.31,M,XDLO,C,15.15,C,WTHI*7B $SDXDR,D,30.95,M,XDHI,D,30.30,M,XDLO,C,15.15,C,WTHI*78 $SDXDR,D,30.95,M,XDHI,D,30.28,M,XDLO,C,15.15,C,WTHI*71 $SDXDR,D,30.95,M,XDHI,D,30.28,M,XDLO,C,15.15,C,WTHI*71 $SDXDR,D,30.95,M,XDHI,D,30.28,M,XDLO,C,15.15,C,WTHI*71 Example Raw Data Output Format 8 Old SonarMite format (e.g. 1 1.88 12.7 128 20) 1 30.16 0 0 0 10.9 100 7 1 29.43 0 0 0 10.9 100 7 1 29.23 0 0 0 10.9 100 7...
SonarMite DFX v1.20 (c) Lymtech 2016 ☺ (^V)ersion Display the current firmware version number nSonarMite v1.20(c)2016 LYMTECH ☺ (^I)d Toggle the ID number of the instrument. This function is intended for use in multiple transducer systems running in polled mode. ☺...
SonarMite DFX v1.20 (c) Lymtech 2016 Transducer Dimensions 200/30KHz Transducer Body System Specification Transducer Hi Frequency 200 KHz Active Transducer Beam Spread 8 to 10 Degrees Depth Range 0.30m to 75.00m (Software limited) Accuracy +/-0.03m (RMS) Weight 2.4 Kg Transducer Lo Frequency 30 KHz Active Transducer Beam Spread 8 to 30 Degrees...