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1. TP3 V1 R2 100 5VREL N IN M wi Vn Vrms noise with input diodes D1 D2 shorted ar our 10UF 16V TP2 6 R1 100 Pave TPS NE o pure is ECT TR 1898 C12 22pF 17dB O aves tour 16v Tour R5 61 9K 1 240 Vn 10mV C15 _1200pF BW 10 14 kHz 24dB 470K Vn 09mV R15 100K I Vn 20mV C16 22pF Vn 2 6mV t Q2 Q1 V1 4 FC A mo Ps c5 1 MMBT5089 R21 100K 1 R16 Ns 2 5 1K 047 047uF t N R19 C14 001uF 5 6K U1 4 V1 gt 11 1 10K 1200pF Triad SP 66 470K 250mH E a 7 MIC860 cit 11 MIC860 R20 4 R10 mj 470K L R17 cial 2 L3 5 R7 R8 DAI 100K Ne R14 Detur T 5 6K 411 100 100 MA159ACT Y Y R12 221K 1 74 i U3 PA_OUT 1 Tal 5 6K MICB60 fec cio lt co R13 2 C174 620pFA S OMIT 22
2. TP8 5V 9 94 5V 05 5V Ue GND R43 20 480kHz jJ T 5V U2 5v 100 T E 5V 7 4020 14 E 14 E x Yi 12 0 4017 4 12 BEK 4017 4 12 USA qz Cf CE gt atop ap CE gt 9 SPG8640AN 8 009 10 m vo E um E our 2 aro C17 1 d T Yo MCN 0 1uF 58 GND 8558588588 1 40 8558588588 2 8 arowy 2 14 BIP S1A FREQ SELECT aaaca 5 LXO 20480Hz vine Se re lo Y 00 2025 LE 74HC393 1024082 s Y J126 DI 12 0KHZ 1 7 DIAL 0123456789 DIAL 0123456789 914 24 57 IET CKA 100 10V J1 24 4 12 5 2 common SI amp A112 common 52 C amp KA112 5V S4 MANUAL R20 R38 R42 21 E R22 TP7 ast V 31 13 x35 100K 100K 23 li Fout R14 470K 10 J1 23 100K lt gt 2 Q5 J1 14 22 26 J1 22 2
3. RNi 220K SIP DA3 ACOUSTIC COMMAND 816 4148 CODE SWITCHES ACOUSTIC COMMAND ENCODING JUMPERS 16 A ee FD CO SO o0 I 2 2 M JP1 nee BEACON TRANSPOND __ __ TELEMETRY __ D ure 12 np JUMPER WEIGHT JUMPER WEIGHT JUMPER WEIGHT d 2 tds JP3 1 4 1 JP4 1 4 1 R89 3 3K JP2 1 4 1 f 5VREL x ern ds TELEM_2 JP2 2 3 2 JP3 2 3 2 JP4 2 3 2 R54 4 10 yi 17 46 7 100 el la RELEASE RELEASE ___ 1 DA2 A JP 23 JUMPER WEIGHT gt da 5 i XMT LISTEN F t R87 3 3K 2 10uF 16V 14 Je EN PIC_XMIT LISTEN JP1 3 10 4 13 12 yi ls e 1 R86 JP1 4 9 8 11 6 T 10K JP1 5 8 16 1 TEAR TRANSPOND JP1 6 7 32 9 8 JP4 ab TP22 516 2748 do SB 1 i ACS BOOST ENA R53 3 3K TELEMETRY l ACS_BOOST_ENA R52 10K 1 18 RA2 RA1 2 RAS HZ J4 4 RA4 DSC INIAs Yi R150 MCL O0SC OUT AN 41 6 END vec 3 R55 1 32 768kHz 1 0 3W 92 7 012 12 l 8 11 1 g RB2 5 RELOC RB3 4 PIC160622 Tor S
4. Insert anode small wire into plugholder with connector fllush with edge Pull through with pliers Do not hit connector on hard surface Bend inconel wire up 90 deg toward release Slide fiberglass pin over wire using 4 LJ O O Assemble pin holder onto plug holder with pin in slot O U Oe O Remove pin holder and rotate pin 90 deg Bend wire down sharply at 90 deg block sharply with larger hole heat shrink tubing exposed 3 8 25 J g ve Holding pin snug against pin holder bend wire out 90 deg sharply Cut wire as shown relative to pin gt Sy N Bend wire down sharply at 90 deg as shown Sheet 2 of 4 gfc 11 17 03 PN 56 14a NA I N Rotate pin back Wrap wire around feed wire into p
5. 5 1 PROGRAMMING THE ACOUSTIC COMMANDS 5 1 ACOUSTIC COMMAND ENCODING 5 4 ACOUSTIC COMMAND 55 2 5 6 CIRCUIT DETAILS u 6 1 BATTERY PACK uoo De P Orc 6 1 PERSISTOR COMPUTER MODULE amp MEMORY CARD 6 2 RECOVERY AIDS the RELOC Module 02 2 7 2 2 6 2 FAIL SAFE CIRCUITS nette rhe eR Ud ee en 6 3 DYNAMIC CLOCK ADJUSTMENT 0 0 0 0 6 3 TES ASSEMBLY INSTRUCTIONS 2 2 7 1 GLASS INSTRUMENT 8 0 00 7 1 SEALING THE GLASS 0021 7 2 HARD HAT ASSEMBLY oia ein 7 4 BURN WIRE RELEASE MECHANISM 7 6 PRESSURE amp VACUUM PORTS 7 6 AT SEA OPERATIONS IMPORTANT NOTES 8 1 DEPLOYMENT Rare 8 1 8 1 1 Launch Precautions anna nn klar yeh vest 8 1 8 1 2 Selecting and Attaching the IES 22 2 2 2 8 2 8 1 3 Acoustic Tracking Operations 2 8 3 8 1 4 Acoustic Telemetry Operations
6. U32 3V R158 S ale U34_3V 18 cik a4 usa gt TP44 100 77 RESET 9374 c PRESS PERIOD a7 2 erS R164 U34 E 1 3 U35 B e Q9 q gt CLK J6 ya a ig 98 E 12 lcu Press PERIOD SELECT PAROS CONNECT 162 gt 1685 12H opi 134 ck QA HT RESS PERIOD i 1 MA159ACT ss MM74HC393M 5819 1 zeit oca 2 M 3 t a 25 IMM74HCT4020M N n 4 U33_3V Paros PWR ol 4 TP43 El o s 9 U35 3V 94 047 U37 A E nn 5 E COUNT RESET 1 reset 9574 2 EMPIRE OD 6 2 Use 2213 gt U37 B 12 1 3 R168 R166 Q9 14 ee CK DAE 12 Temp PERIOD SELECT SYSTEM BATT 4 29 15 NE CLR emp PERIOD SELEC 1 0 330K R161 012 7 0516 134 garth ITEMP PERIOD T 1M oaa MM74HC393MP 913 o QD 4 5 LL 349 022 7 MM74HCT4020M MM74HC393M 2461 DZ PAROS_ENA 4 s1 01 8 165 22K TAL ul R169 10 TP36 Fref 5V 4 2 R177 U42 e fin vout 4 ca 0 pao FREF 4MHZ 6 Ref Shutdwn 3 001UF R178 C89 22pF Hw en agi po Sm PAS ar pul Y4 4 5 R173 GND OUTPUT LT1120A C95 1 4 0 MHz c92 C96 FR 0UF 16V coo L L7 _C88 HA72101B AX aN 176 B 2r 10uF 18V 00k R179 100pF 120uH 0 tuF 1M 5 e C93 22pF 1 ile e AM R174 470 University of Rhode Island Graduate School of Oceanography Title Es REF OSCILLATOR amp DIVIDERS Size Number 1ES6 2 Rev B Desig
7. PUSH TO TEST NO 5 2 si 2 pole 10 position switch n DB 15M 9 Ampere Hour Capacity system release 120 60 180 60 240 60 POSITION Vdc I mA Vdc mA Vdc I MA 1 14 5125 350 14 5125 350 145425 350 2 14 5 12 5 350 14 52 5 350 14 5 12 5 350 3 0 0 0 0 74 60 200 74 6 0 200 4 7 4 6 3 200 7 4 6 3 200 7 4 6 3 200 5 7 4 6 3 200 7 4 6 3 200 7 4 6 3 200 6 7 4 6 3 200 7 4 6 3 200 7 4 6 3 200 7 7 4 6 3 200 7 4 6 3 200 7 4 6 3 200 8 0 0 0 0 7 4 6 0 200 7 4 6 0 200 9 0 0 0 0 0 0 0 0 7 4 6 0 200 10 0 0 0 0 0 0 0 0 7 4 6 0 200 Testing Notes 1 Connect a DVM to the BNC output and set to Voltage measure 2 V1 V2 V1 value indicates open circuit Voltage no push button test 3 V1 V2 V2 value indicates the minimum value for a new battery when loaded button pressed 4 The ma value indicates the minimum current delivery capacity when loaded button pressed 5 If the battery has passivated press the button intermittently 2 seconds ON 10 seconds OFF until the minimum values in the table are reached DO NOT HOLD THE BUTTON ON N BNC OUTPUT IES Battery Tester URI PN Rev 2 10 26 05 Scale none Sheet 1 1 URI GSO Physical Oceanography THIS PAGE INTENTIONALLY LEFT BLANK Appendix 1 Paroscientific Pressure Sensor Specifications THIS
8. X X X JE TES Mission Setup Menu 3 JE JE A Set date time clock Select travel time measurement schedule D Enter water depth lockout time and output power level E Enter auto release date amp hour F Enable disable the acoustic telemetry data file H Enter a mission statement ne Sensors Pressure Sensor Setup Menu K Current Sensor Setup Menu S SAVE mission configuration G GO review save configuration and start data collection Q Return to Main Menu Connected 0 06 23 ANSI 360081 SCROLL CAPS NUM Capture Print echo Figure 12 2 C PIES Mission Setup Menu Note Options List Selection K Selecting K on the IES Mission Setup Menu brings you to the DCS Setup Menu S IES HyperTerminal Lini xl File Edi View Call Transfer Help 515 e8 alal an Current Sensor Setup Menu Select Doppler current sensor DCS measurement schedule B Load sensor configuration file View sensor configuration C Q Return to Mission Setup Menu Connected 0 08 14 ANSI 600841 SCROLL CAPS NUM Capture Print ec
9. 222 8 4 RECOVERY 22 Epi ie wee 8 5 8 2 1 Acoustic Commands 0202 8 5 8 2 2 Burn Wire Release Mechanism 2 8 5 8 2 3 RELOC Module san ae A bere ete ee d ove d exe 8 6 8 2 4 Flag and Reflective Tape 0 2 2 2 2 7 22 8 6 8 2 5 Floating Recovery Line 001000122 8 6 MAINTENANCE 1 9 1 PRESSURE SENSOR nike 9 1 9 1 1 Cleaning amp Filling the Pressure 7 2 9 1 9 1 2 Pressure Sensor Calibration 000121 9 2 INSTRUMENT HOUSING 0 00 0 9 2 GLASS PENETRATORS 2 5 ai NARA dU 9 2 RELEASE BLOCK s b Ree ite sr ne 9 3 LOADING NEW FIRMWARE 00 9 3 Chapter 10 Advanced Acoustic Telemetry Option for PIES C PIES Configurations 10 1 10 1 PDT TELEMETRY TECHNIQUE 2 10 1 10 2 IES DATA PROCESSING FOR FILE TELEMETRY DATA 10 2 s sabes beens A Chae AA 10 2 10 2 2 pressure data ae LER Ian er pees 10 2 10 23 current meter data ios e ba 10 2 10 3 IES SCHEDULE FOR PDT OPERATIONS 2 10 3 10 4 PDT RECORD FR
10. 3 SPARES 4 Sys R33 Tee U1 14 15 WA 5V 5V De VBatt 5 KJ U8 B 24 404 07 R35 U4 2908 R 2 10 5 V 12 en 34 R2 J11 xd gt 5 Vout 2 qu 17 02 5V m U6 D lo Shutdwr B Y 1N414g 10 7 compet R32 10 R28 1 0 R23 1 0 ahs J1 2 Input GND 4 1M 196 3 03 5V NN U8 5V 4 1 ac E 11 F R41 1 1 0 V 90 D ON OFF LT1120A 4013 2 b 6 0 aw 18 74HC14 Wisse 001u E c11 1 2N4126 5 R39 1 0 R27 1 0 y BT1 L 6 Q2 4 U5 5V 4 U10 5V 10UF 16V C12 p 0106 R40 1 0 R25 1 0 J1 15 University of Rhode Island d R31 22uF R30 t U6_5V U11_5V 16 777 31 16 Graduate School of Oceanography 975K R21 1 0 R1 1 0 R29 2 2K U7_5V 012 IX J1 32 4 7 IES Model 6 1 ECHO BOX 1 J1 4 4 4 14 4 C8 SIZE NUMBER REV BN de G10 Tour B dii 33uF 10V Dote 1 August 2000 Drawn By N WU V Filename EchoBOXB SCH SHEET THIS PAGE INTENTIONALLY LEFT BLANK o ojo lnlojalslo ln e An CURRENT METER PUSH BUTTON ES 0000000 00000000 URI GSO BATTERY TESTER 200 300 100 N milli A 400 500
11. View Engineering Data Release Relay Test ON for 38 seconds Return to Main Menu A B D G H J K 9 Connected 0 00 55 9600 8 N 1 A Ping Test 10 pings at programmed output level 4 sec rate tests the acoustic output An oscilloscope with a high voltage test probe can be attached to measure the voltage across the acoustic transducer and the pulse length Important before selecting this test attach the oscilloscope probe with the ground lead on OUT and the high voltage probe on OUT These test points are near connector J1 see Figure 2 1 The output voltage should measure 150 x 10 Programmed level dB 1724 20 Volts p p For example for a programmed level of 188 Output voltage 150 x 1088 1722 _ 904Volts DANGER Highest output voltage for output level 197dB will be 2500Volts peak to peak Travel Time Test a single TT measurement tests the echo detector In order to detect an echo you must provide a simulated one If a URI GSO echo simulator is available attach the box s INPUT cable to the TRIGGER TP37 of the IES model 6 2 and the OUTPUT of the echo box to either one of the signal insertion cable s input connectors The signal insertion cable itself must be attached to TRANSDUCER J1 of the IES With this test setup the IES should report a travel time within 1 milliseconds of the echo simulator setting See the Test Accessories Users Guide for details on using the Echo Si
12. GENERAL DESCRIPTION trad 12 1 12 2 DOPPLER CURRENT SENSOR SPECIFICATIONS 12 2 12 3 DCS SETUP MENU Et yd ve EUR Des selec a ees 12 3 12 4 THE DCS CONFIGURATION FILE 2 2 7 7 7222 12 4 12 4 1 Set Property Averagebase 02 0 2 22 12 4 12 4 2 Set Property Current Type csse 12 4 12 4 3 Set Property Compensation 12 4 12 4 4 Set Property Compensation Tilt eem 12 4 12 4 5 Set Property Compensation Upstreanm 12 4 12 4 6 Set Property Output Comprehensive 12 5 12 4 7 Set Property Output 022 12 5 12 4 8 Set Property Output Polled 1 12 5 11 4 9 Set Property Pingrate sse 12 5 12 5 DCS TESTING WITH THE IES 2 12 6 12 6 DES DATA RECORD viii AE ee ni 12 6 127 DES ERROR RECORD pg even ca oe rien ne rants 12 6 12 8 C PIES ENERGY BUDGET BATTERY REQUIREMENTS 12 7 12 9 C PIES MOORING ASSEMBLY 22 12 7 12 10 DEPLOYING THE C PIES 12 7 12 11 POST DEPLOYMENT CONFIRMATION OF DCS OPERATION 12 7 12 13 C PIES RECOVERY OPERATIONS
13. to six bursts hour with 4TTs burst All of these bursts begin precisely at ten minute increments of the real time clock RTC for example 1 burst hr starts precisely on the hour 2 bursts hr start on the hour and at 30 minutes after the hour etc Within the bursts the individual TT measurements are timed to alternate between a 16 and 18 second rate to prevent aliasing in the data 3 4 2 Pressure amp Temperature Measurements The pressure and temperature measurement schedules since they are made with the same sensor are identical and will be referred to as a single P amp T measurement schedule If the pressure sensor is installed and the P amp T schedule is enabled the user can choose from one two four or six P amp T measurements per hour Like the TT measurements the P amp T measurements are synchronized with the real time clock RTC 10 minute marks but will occur after the TT measurement burst if scheduled at the same 10 minute mark or precisely at the 10 minute mark if not scheduled with the TT measurement In other words the TT measurement has priority if the two measurements TT and P amp T are scheduled for the same time 3 4 3 Pressure amp Temperature Raw Data Measurements If the P amp T frequency data file collection is enabled see Chapter 3 4 3 amp 4 2 1 a separate file will be created to store the raw frequency data from the pressure and temperature sensors These data will be collected on the same P amp T schedule de
14. Inverted Echo Sounder Model 6 2 Deployment IES Site Project Date ACS function Benthos DS 7000 Command TELEM XPND BEACON RELEASE CLEAR __76__ Measure Rate pings every minutes Depth meters m min sink time min If cPIES DCS s n DCS cable s n Recovery Devices Attached amp Working Internal radio flasher Channel PIES stand Flag Launch Site type of fix LAT LONG IES clock offset from GMT launch seconds early late Attach anchor suspend amp check slippage Time of launch GMT Local ACS replies kHz Reached bottom Bottom TT measure burst Burst Telemetry DS 7000 GAIN Distance SAMPLE Tau Pressure Speed Direction 1 2 3 4 ACS CLEAR when leaving site NOTES THIS PAGE INTENTIONALLY LEFT BLANK Inverted Echo Sounder Model 6 2 Recovery IES Site Project Date ACS function Benthos DS 7000 Command TELEM XPND BEACON RELEASE CLEAR __76__ Measure Rate pings every minutes Depth meters Transpond slant range release m Release command time Leave bottom time Surface time On board time IES OFF time IES clock offset from GMT recovery seconds early late Radio working Flasher working NOTES THIS PAGE INTENTIONALLY LEFT BLANK Appendix F 1 Refurbishing Kits Release re arming kit P N 10 06 anode P N 13 06 link P N 45 01 pin P N 50 05 anchor line P N 37 15_93 nylon screw
15. BEACON This command sets the acoustic command subsystem in the beacon mode When the command is accepted the system will reply with two 12 0 kHz pulses two seconds apart The command decoder will then generate 12 0 kHz pulses at an eight second rate for the next twenty minutes unless disabled by a reset During this time the decoder will not accept any other commands so the beacon cannot be terminated by the CLEAR command During a travel time measurement burst the beacon is blocked but will continue after the burst if twenty minutes has not passed since the beacon was enabled While in beacon mode the system cannot receive a release command After the twenty minutes of beacon mode have expired the acoustic command subsystem will return to listening for further commands Note If the Beacon function is enabled at midnight according to the IES clock it will be disabled CHAPTER 5 ACOUSTIC COMMAND SUBSYSTEM ACS 5 7 RELEASE This command sets the IES in release mode When the command is accepted the system will reply with six 12 0 kHz pulses two seconds apart to signify that a release command has been detected If current is detected in the burn wire release the system will continue to transmit pulses at a four second rate for at least 3 hours The burn wire release will usually take about 15 20 minutes before it drops the ballast anchor allowing the IES to come to the surface IMPORTANT Refer to Chapter 8 for details of at sea operatio
16. amp pressure only is essentially the same with the data records being shorter The C PIES records are outlined in the figures and the PIES records are simply truncated i e the speed data are eliminated and the record frame shortened appropriately 10 2 IES Data Processing for File Telemetry The data processing techniques used by the Model 6 2 during its deployment period in situ and transmitted by file telemetry are nearly identical to those historically used in the laboratory at URI GSO after the IES is recovered GSO has compared the products of both processing routines and found there to be no substantial difference from routinely good data A brief description of the steps used to process tau pressure and current meter data in situ follows 10 2 1 tau data The 24 measurements of travel time collected every hour de spiked and sorted at the end of each hour The values are then windowed within 3 standard deviations of the median keeping the central 99 73 and the 1 quartile value of that list is saved until the end of the 24 hour calendar day At the end of the day the 24 hourly values are again despiked sorted 99 73 windowed resorted and that median value is saved to be written to the telem dat file at the end of the following day hence this tau is centered on the previous 72 hours time centering chosen to be same as for pressure 10 2 2 pressure data Pressure is measured 1 2 3 or 6 times per hour depending
17. dropping on these communications to monitor incoming signal strength NOTE We set up the second laptop for double duty TRAX4 display and telemetry noise monitoring However this creates a problem the TRAX4 must operate in MS DOS mode so for greatest convenience you need to find an RS 232 terminal emulation program like PROCOMM that will also run in MS DOS mode The following software is recommended to conduct IES acoustic tracking amp telemetry operations Note The Matlab elements m files on this list are available from URI GSO without charge gt Matlab Version 7 01 version 13 or higher available from MathWorks Inc gt 5 7000 telemetry setup receive and data logger PPDTb m Receiver logger for PIES burst amp file telemetry CPDTb m Receiver logger for C PIES burst amp file telemetry PPlotPDT m Data display for PIES file telemetry CPlotPDT m Data display for C PIES file telemetry TelemPlot m Subroutine for both of the display programs Telem_plot m Additional subroutine used by TelemPlot RenamePDT m and DeletePDT m Data file management utilities cf m DS 7000 configuration utility closes any open ports amp files for restart o RS 232 terminal emulator Hyperterminal Procomm etc gt 05 7000 acoustic tracking o TraxSet m Sets up DS 7000 for acoustic tracking mode o TRAX4 Software Package Available from Chaplin Marine Instruments www cmari com DS 7000 AUX port adapter availa
18. 0 125 C 0 1 millidegree 1 part in 12x10 1 4 INVERTED ECHO SOUNDER MODEL 6 2 1 5 IES Model 6 2 SPECIFICATIONS cont d Power System system battery Lithium DD cells up to 8 parallel stacks of 2 cells 240 Amp hours 7 4Vdc 17 inch sphere release battery Lithium DD cells up to 2 stacks of 4 cells 60 Ampere hours 14 4Vdc 17 inch sphere operating capacity 2 5 years in 17 sphere depends on measurement schedule options added water depth and telemetry options used safety parallel diodes on cells ensure series battery stack integrity series diodes on each stack isolate stacks from each other Intelligence processor Persistor CF1 with Motorola MC68CK338 microprocessor crash protection Independent system and release functions deadman watchdog timer low battery detection stops all except release functions Mechanical weight in air 36kgs 80 Ibs with full 180 Amp hr lithium battery pack 34kgs 76 lbs with 120 Amp hr lithium battery pack buoyancy 16kgs 36 lbs with 180 Amp hr lithium battery pack 18kgs 40 Ibs with 120 Amp hr lithium battery pack shipping container HAZMAT sealed polyethelene barrel total shipping weight 57Kgs 125 Ibs 16 TRAVEL TIME MEASUREMENTS Two primary measurements are taken by the IES inverted echo sounding travel time and optionally absolute bottom pressure The travel time is the time it takes an acoustic pulse 12 0kHz 6 milliseconds to trave
19. 08 9600 8 N 1 A Self Test Menu The Self Test Menu contains selections of functions that can test virtually all of the IES circuits Some of the menu selections require additional test instruments e g the travel time test requires an echo simulator and the reference oscillator test requires a frequency counter Details of each test and the supplementary test equipment required are provided in Chapter 3 B Memory Card Menu The Memory Card Menu allows the user to examine and read the memory card data files as well as prepare the card for a data acquisition mission and offload files to a computer Details of each memory card menu selection are provided in Chapter 2 5 C Mission Setup and START Menu The Mission Setup Menu is essentially a list of programming options that MUST be selected prior to deploying the IES These selections determine the behavior of the instrument s data acquisition subsystem during the subsequent deployment The menu is self explanatory and the ranges of selections are indicated invalid operating parameters will not be accepted Details of each selection are provided in Chapter 2 4 D RESET This selection will RESET the IES without saving any changes that may have been made while in menu mode Changes will be lost unless they were saved by the SAVE or the GO selection in the Mission Setup Menu See Chapter 2 2 2 for a description of the RESET process 2 8 INVERTED ECHO SOUNDER MODEL 6 2
20. 10010 1010 0 1 1010 10100 10110 10100 1 1110 10100 1 0001 1010 0 1 1001 10100 10101 10100 1 1101 10100 10011 10100 1 1011 10100 10111 10100 1 1111 10100 1 0000 0110 0 1 1000 0110 0 10100 0110 0 1 110001100 1001001100 1 1010 01100 1011001100 1 111001100 10001 0110 0 1 1001 01100 10101 01100 1 1101 01100 10011 01100 1 1011 01100 10111 01100 1 1111 01100 1 0000 1110 0 1 1000 11100 10100 11100 1 1100 11100 10010 11100 1 1010 11100 10110 11100 1 1110 11100 10001 11100 1 1001 11100 10101 11100 1 1101 11100 10011 11100 1 1011 11100 10111 11100 1 1111 11100 1 0000 0001 0 1 1000 0001 0 1 0100 0001 0 1 1100 0001 0 1 0010 0001 0 1 1010 0001 0 10110 0001 0 1 1110 0001 0 1 0001 0001 0 1 1001 0001 0 1 0101 0001 0 1 1101 0001 0 1 0011 0001 0 1 1011 0001 0 10111 00010 1 1111 0001 0 1 0000 1001 0 1 1000 1001 0 1 0100 1001 0 1 1100 1001 0 1 0010 1001 0 1 1010 1001 0 10110 1001 0 1 1110 1001 0 1 0001 1001 0 1 1001 1001 0 10101 1001 0 1 1101 1001 0 10011 1001 0 1 1011 1001 0 10111 10010 1 1111 1001 0 1 0000 0101 0 1 1000 0101 0 10100 0101 0 1 1100 0101 0 10010 0101 0 1 1010 0101 0 101100101 0 1 1110 0101 0 1 0001 0101 0 1 1001 0101 0 10101 0101 0 1 1101 0101 0 10011 0101 0 1 1011 0101 0 10111 01010 1 1111 0101 0 Benthos DS 7000 codes 0 00 10 Figure 5 2 continued 5 3 5 4 INVERTED ECHO SOUNDER MODEL 6 2 5 2 ACOUSTIC COMMAND ENCODING EXAMPLE The acoustic commands for each IES are encoded and tested at the time of manufac
21. 12 8 Appendix A Nautilus style Glass Sealing Precautions A 2 TES Schematics A 2 1 IES Power Conditioner A 2 2 TES Preamp amp Output Driver 2 3 IES Echo Detector A 2 4 IES PIC Decoder amp Release Relay A 2 5 IES Ref Oscillator amp Dividers A 2 6 IES CFl Interface A 3 IES Accessories Schematics A 3 1 Echo Simulator A 3 2 Signal Insertion Cable A 3 3 Release Simulator Appendix B B 1 Paroscientific Pressure Sensor Specifications Appendix C C 1 Bliley Frequency Reference Crystal Specifications Appendix D D 1 Release Block Part Numbers D 2 Release Block Assembly Instructions Appendix E E 1 IES Deployment Form E 2 IES Recovery Form Appendix F F 1 Refurbishing Kits F 2 Replacement Parts CHAPTER 1 OVERVIEW 1 1 Chapter 1 TES Model 6 2 OVERVIEW The Inverted Echo Sounder IES is an ocean bottom moored instrument that measures the vertical acoustic travel time V ATT round trip from the sea floor to the sea surface and back URI GSO Model 6 2 is a combined IES data logger and acoustic release with optional measurements of bottom pressure temperature and current speed and direction with attached Aanderaa Doppler current sensor Data are processed in situ and are available optional remotely by an acoustic telemetry link or expendable satellite link data shuttle The VATT varies principally due to changes in the integrated temperature profile of the water column Applications in several large and
22. 195 200 dB out Figure 3 1 Total average current mA drawn from the battery pack for a chosen output power level dB and pressure temperature sampling rate Example When the user enters a depth of 5500 m the IES Mission Setup Menu selection D recommends a power level of 194 dB Having chosen this power level and a P T sampling rate selection C of one per hour follow the vertical dashed line at 194 dB to the point where it intersects the 1 hr curve Then follow the horizontal dashed line from this point to the current axis showing an average current drain of 3 2 mA This horizontal line lies below the 4yr mark on the 120 Amp hr batt duration CHAPTER 3 ADVANCED PLANNING amp PREDEPLOYMENT CHECKS 3 5 stave indicating the 120 Amp hour battery has sufficient energy for a 4 year deployment The line is above the 5yr mark on this stave indicating the 120 Amp hour battery does not have sufficient energy for a 5 year deployment But the line lies below the 5yr mark on the 180 Amp hr batt duration stave so the higher capacity battery is capable of powering the instrument for 5 years with this mission configuration Always configure the release battery as a double stack 60 Amp hrs This will eliminate problems due to passivation see section 3 3 1 an will support the acoustic command functions with a 20 safety margin for 5 years regardless of mission configuration IMPORTANT BATTERY NOTES e The shelf life of
23. 2005 Drawn by Chaplin ad WU Filename 1ES62_A sch Sheet 2 of 6 A B D THIS PAGE INTENTIONALLY LEFT BLANK gt D VD1 _ C36 SVREL 29 10 0 9 12 25 kHz BW 2000 Hz TP10 10 12 00 kHz BW 150 Hz R41 180K 4 5 y 3000pF_j 12 0NB GEP E lee P13 12 50 kHz 150 Hz PGS 10uF 16V 0 1uF E 4 R37 470K 1 I TP20 4 13 1 MM 50mH 12 0KHz R22 100 VD1 VD1 V t VD1 TP11 4 R34 9 12 0 M FMMT491A C19 018 TP9 221K 196 S 107211 12 0 2 10uF 16V 0 tuF 37 3 WB t 6 wate R38 10K 3000 R33 Zae MIC860 R2 out C30 omit LOK Eee TP8 LIMIT C29 C28 U9 B pH 4 835 4 T 0 1uF VD1 6 L2 50mH 04011 12 LYN 3 2 Sn TP12 U9 D Pp ECHO vD1 FIXED_T 1 n R27 c20 2 5 165K 1 U9 A aj 04011 PA_OUT ikea R30 C23 2 5 6K our U4 1 A
24. 22 0 Example Notes gt The system log file does not have to start with a RES record the memory card may been erased just prior to starting the mission 46 INVERTED ECHO SOUNDER MODEL 6 2 4 3 2 Engineering Data File The engineering data file E _XX dat begins with this meta data record E yyyy mm dd hh mm ss IES s n and is followed by these engineering data records hour CIkVbat Irel Isys Rel Vbat SysVbat IntPress IntTemp TTav Pav Tav Pfrq Tfrq ClkfrqDiff Definition of terms The engineering meta data record is the first record of the engineering data file Besides the time stamp the IES instrument serial number IES s n is reported An engineering meta data record will be composed and written to memory card each time a new engineering data file is created it will always be the first record in the file The engineering data record will contain a time stamp and a number of IES self test measurements made to monitor the instrument s operations An engineering data record will be composed and written to the memory card at the end of each day s operations i e just after the activities that started at 23 50 00 hour the number of hours elapsed since 1970 1 1 ClkVbat the IES real time clock backup battery voltage in Volts Irel the release battery current drain in milliAmperes Isys the system battery current drain in milliAmperes RelVbat the re
25. 24 seconds C PIES record frame 30 seconds TIME Figure 10 1 C IES Burst Telemetry Record Framing Omit speed and heading values and make frame 24 sec for PIES telemetry CHAPTER 10 ADVANCED ACOUSTIC TELEMETRY 10 5 10 8 Burst Telemetry Checklist Assuming that the IES clock has not reached 23 50 00 hours four times since the last RESET and that the IES has been launched and is on the sea floor the following operation will determine if the IES echo detector and pressure sensor is working properly this is burst telemetry 1 Prior to the next travel time burst use the Benthos DS 7000 acoustic deck unit to send the appropriate ACS command to the IES Make sure that the DS 7000 transducer extends below the keel of the ship so it is not shadowed from the IES Verify that the IES replies with the standard two ping response see IES User s Manual Chapter 5 Connect the DS 7000 AUX connector serial cable to the COMI port of the laptop computer Switch the DS 7000 to REMOTE mode Using the Windows Explorer program delete the burst dat file if it exists in the c matlab telemetry data directory Create these directories if they do not exist Start Matlab 6 release 13 or above From the Matlab command window change to the c matlab directory and run the PburstPDT m program This will initialize the DS 7000 and the computer as a burst telemetry data receiver Watch the DS 7000 display chan
26. 33029152 171206832 33028878 171203184 33028632 171199888 33028402 171196880 33028196 171194176 33028004 171191664 279545 33027828 171189424 33027668 171187360 33027520 171185488 33027382 171183744 33027258 171182160 33027140 171180704 279546 33027036 171179376 33026938 171178144 33026844 171176992 33026758 171175952 33026680 171174992 33026610 171174080 Example 1 Notes gt meta data header record and data records are wrapped to fit this page gt Measurements were taken every ten minutes 40 INVERTED ECHO SOUNDER MODEL 6 2 4 3 6 Telemetry Data File The telemetry data file TELEM dat will begin with these two meta data records TEL yyyy mm dd hh mm ss IES s n 375 00 and is followed by these travel time and pressure data records year day T P for IES with pressure sensor year day T P S H for IES with pressure amp Doppler current sensor The data are low pass filtered using a tide elimination filter Godin 1972 Sections 2 1 1 and 4 5 Reference Godin G The Analysis of Tides University of Toronto Press 1972 Definition of terms year day the year day an integer from 1 to 365 or 366 on a leap year 375 0 0 a pseudo record that flags the beginning of the data see below T processed travel time data in units of seconds P processed pressure data in units of 10u Pa S processed current speed in cm sec H current heading compass angle in degrees increasing clo
27. 5msec 133 degree 1 msec PRESSURE TAU SPEED MARKER modulo 2000 decaPascal modulo 500 sec range 0 ADcm s66 MARKER range 0 2000 decaPascal range 0 500 msec odis mil 21 0 1428 decaPascal 1msec 0833msec tau 1msec Enisecis dmseo Y lt 11 0kHz 11 0kHz Note 0 25 second quiet zone between data words lt PIES record frame 24 seconds lt C PIES record frame 30 seconds gt TIME gt Figure 10 3 C PIES File Telemetry LSB Record Framing Omit speed amp heading values and make record frame 24 secs for PIES telemetry Figure Notes All values will be plotted individually in Matlab graphics windows as the FilePDT program runs The horizontal axis will be the number of marker pulses that have been received Any missing data will leave a gap in the respective plot missing markers cause loss of one day s values for all variables but the plot continues to the next day s values without a gap 10 10 INVERTED ECHO SOUNDER MODEL 6 2 10 11 File Telemetry Checklist Assuming that the IES clock has registered 4 midnights 23 50 00 end of data collection day since the last RESET and that the IES has been launched and is on the sea floor The following operation will collect the daily mean values of travel time and pressure from the IES telemetry data file this is file telemetry 1 2 10 11 Prior to the next travel time burst use the Benthos DS 7000 aco
28. CH2 5 A R90 OMIT 1 ooo RESET A ad E U19 Te DIN CH3 VA SPARE SRT 14 STRB CH4 wD1 PERSISTOR CF1 15 6 R92 909K 1 4 DOUT 5 S3 MA159ACT 1 los la 14 DGND cHe H ni R95 399K 1 RELEASE BATT RESET C79 MAX6301CSA WD Reset Ei 413 konn 8 R96 499K 1 YSYSTEM_E 56uF Seno BKPT 12 un L Tess SYSTEM_BATT TS pass FREEZE 11 ger SHON O 1uF TP30 Vref SENSOR 3 3V YEA 78 7 eser psi 8 MAX146ACAP _1 C69 WV R103 R79 1 0 10 AX t SYSTEM BATT AN naa xt 9 oso 10 Hero O tuF m YSI 44032 062 DAFT m 100K 11 Win SHDN 12 1 0uF 16V oat ee 72 91 PRO R97 _ clock lines near U28 A 10UF 16V i ene 14 0 10 7T 0 1uF er 3 2 TE EM 2 Ben ti 15 pcs ERES L hote 8 100K 1 17 18 F TELEM 1 9 PCS3 MOSI 4 28 E CHARGE Yes TP31 G TELEM 1 138 Tres visol 28 RELEASE_LATCH CHARGE 2 RELEASE o12 RELEASE UNLATCH MM74HC4049M U28 F TP gt pose crie 22 PING BLOCK E 32 PA_DRIVE FREF_4MHZ 14 215 4MHz oros cro7 24 PA_DRIVE 25 26 018 4MHZ_ENA TE CTD8 CTD6 U21 3V 8 MM74HC4049M 27 28 ln 0016 OUNT_RESET ECHO 5 4 CTD5 CTS14B 2 li DD 15 T 14 29 30 t MISO D2 U28 C 4 CTS14A Mos 7 R123 AAO TP42 TRIGGER MM74HC4049M 31 oere18A crs188 32 6 04 11 74 4049 2 2K IPRESS_PERIOD 33 101009 34 7 De D6 19 DISCHARGE TEMP_PERIOD CTD28 vss D7 F1_XMT LISTEN 36 MM
29. JL d CD4011 R26 EK R42 L 10K 3 4 MIC7211 5 O1UF 05 4 221K 1 mE VD1 5 8 80pF VD1 MIC860 E 4 C40 3000pF 1K Ber R24 100 R23 5 o R31 C42 omit 221 1 R46 180 tP13 IQ SELECT 4 U9 C 19 i R48 470K Hs VD1 R25 027 __C26 12 U9 E 221K 19 T 10uF 16V 77 0 1uF R32 ok 25 141 3 50mH m 221K 196 1 T 1 GND Z R47 m 7 221K 1 M VD1 TP14 4 PTASIA m SYSTEM_BATT m 07 Tnm 9 MIC7211 12 5 2 5 vD1 100K 2 WN 21 LA R49 10K 12 5KHz 5 R43 1 638 C37 C39 470k gt T 033uF L R51 R45 T nn J8 221K 1 TED AD OUT Wp CONNECT ZR NE miceso l TP15 17 q4 16 _ _ AID BUFF UB gt a University of Rhode Island WE ct Graduate School of Oceanography R50 gt Br Tie IES 2 CHANNEL DETECTOR Size Number IES6 2 Rev Design Gerry Chaplin A include for Wave IES only Date Oct 4 2005 Drawn by Chaplin Filename 1ES62_A sch Sheet 3 of 6 A B D THIS PAGE INTENTIONALLY LEFT BLANK C D
30. PAGE INTENTIONALLY LEFT BLANK Appendix C 1 Frequency Reference Crystal Specifications THIS PAGE INTENTIONALLY LEFT BLANK Appendix D D 1 Release Block Part Numbers D 2 Release Block Assembly Instructions D 3 Mooring Parts e JES anchor weight 50165 P N e PIES mooring platform steel P N 50 27A e Mooring stand rust guard P N 37 23 e Mooring stand lifting line P N THIS PAGE INTENTIONALLY LEFT BLANK Appendix D 1 Release Block Parts cathode assembly 7 p n 56 19 pote anode assembly p n 56 20 Notes 1 See dwgs p n 56 14a 14b 14c for detailed assembly instructions release block rec Ea pin holder p n 50 01 chain p n 45 01_2 O 6 O poa O iL yo 10 4 o Under Sx id RN BN y ES OUTSIDE VIEW N j s 2 places v u screw nylon p n 44 25 2 places IES Exploded Release Block Parts release pin A t URIPN 56 14 Revo gfe 11 17 03 Scale none Sheet 1 of 4 URI GSO Physical Oceanography Appendix D 2 4 2 3 N Release Block Assembly Instructions n Y A O 3 8 O
31. RIS 240 iso v Bam R56 212 TELEM 1 31 100K RELEASE BATT 13 3 R119 N 1 3 3K 7 4 DA12 16 B A R153 9 192 U31 5V D9 105W 680K RELEASE_FLAG RED LED 5 12 5KHZ 4 1 U25 MA159ACT 10 12 0KHZ DA10 i NC1 NC8 8 14 y RELEASE y A lt RELEASE LATCH m A An RELEASE RELEASE UNLATCH 4 1 t INB DUTB t 18 UNLATCH __C78 E MATSSACT MIC4424BM 1 0 tuF 7181 012 4 BESET ACS NI R112 113 DAT Ek ala 72 University of Rhode Island R81 462 D2L5 51K 51K MA159ACT 16 dn 020 IRF7317 ha Je Graduate School of Oceanography DS4E SL2 DC6V U23 B s I Title Es DECODER 8 RELEASE RELAY L MM74HC4049M Enos ase 777 latched position Size Number 1ES6 2 Rev RELEASE_ON e 5 3n B Design Gerry Chaplin A RELEASE SW Date Oct 4 2005 Draw by Chaplin WU Filename 1 562 Asch Sheet 4 of 6 A B C D THIS PAGE INTENTIONALLY LEFT BLANK
32. a different GPS measured ship position Knowing the depth of the IES these measurements give the IES position e Sending the BEACON command will initiate 20 minutes of BEACON mode a 12 0kHz ping at an 8 second rate This mode cannot be used to determine range but can be used to determine relative bearing by maneuvering the ship and monitoring the line scan recorder When the ship is on a straight line course the line to the IES fixed on the bottom is perpendicular to the course line at the point of closest approach as indicated by a minimum time in the line scan trace The BEACON mode is normally used during IES recovery operations when the ship can only listen i e does not have the capability of transmitting transpond pulses while maneuvering Immediately after launching the IES put the deck box transducer in the water if the ship lacks a suitable hull mounted transducer and send the XPND command Set up the deck box in continuous ranging mode with 12 5kHz as the output frequency and 12 0kHz as the receive frequency The interrogation pulse should be gt 20 milliseconds long The slant range will be displayed on the deck box during the IES descent When the IES reaches the bottom the slant range indicated should stablize and be close to the water depth DON T FORGET the transponder will be quiet during travel time measurements note the measurement schedule when using acoustic commands and remember to disable the transpond and
33. a previous telemetry or transpond command A special command has been designated as the CLEAR command for all IESs see the following sections for details In general the acoustic command circuits in the IES Model 6 2 are independent of the data acquisition circuits and are additionally powered by a separate battery There are however some components that are shared by the two subsystems namely the output driver transformer and acoustic transducer The release battery will power these components powered by the system battery during routine data acquisition functions after the release has been activated or if the system battery fails 5 1 PROGRAMMING THE ACOUSTIC COMMANDS The jumpers JP1 thru JP4 on the IES circuit board are used to encode the acoustic command signals for a specific instrument After selecting the desired command number use the switches jumpers to set the binary value of the command according to the weights given in Table 5 1 See the following section for an example JUMPER FUNCTION WEIGHT JP4 1 to JP4 4 telem 1 JP4 2 to JP4 3 telem 2 JP3 1 to JP3 4 xpnd 1 JP3 2 to JP3 3 xpnd 2 JP2 1 to JP2 4 beacon 1 JP2 2 to JP2 3 beacon 2 JP1 1 to JP1 12 release 1 JP1 2 to JP1 11 release 2 JP1 3 to JP1 10 release 4 JP1 4 to JP1 9 release 8 JP1 5 to JP1 8 release 16 JP1 6 to JP1 7 release 32 Table 5 1 TES circuit board jumper weights used to encode the command number 5 2 INVERTED ECHO SOUNDER MODEL 6 2 After the four
34. actual pressure and temperature A pressure temperature meta data header record will be composed and written to the memory card each time a new pressure data file is created it will always be the first record in the P _XX dat file The pressure and temperature data record is composed of the time stamp and the pressure and temperature measurement pairs acquired during that hour Some of the measurement pairs may be zeros depending on the pressure and temperature measurement schedule There is space allocated for 6 measurement pairs per hour measurements every ten minutes so if for example the schedule only calls for one P amp T measurement hour there will be 5 pairs of zeros in the record see Example 2 below The measurement pairs are delimited by two nulls spaces as shown Pressure temperature data are saved in a day buffer until the end of the last daily measurement activities at which time they will be appended to the active P _XX dat file on the memory card hour the number of hours elapsed since 0 hours 1970 1 1 P1 T1 P6 T6 pressure and temperature measurement pairs in units of 10Pa 1 10millibar and 107 degree respectively Example 1 P 2001 11 21 12 48 26 039 87087 10 5 842375 4036 615 2110 00 0 00 47948 39 3713 318 162670 80 0 037720 0 00 30 28409 2 333273 60 53492 71 7080 0 00 0 00 0 00 27954000 00 00 00 00 10982 19447 279541 10863 19479 10732 19420 10519 19220 10244 18838 9990 18260 9755 17504 27954
35. and fill in the blanks during launch operations This form has been used at URI GSO and found to be valuable at IES recovery time when trying to reconstruct what happened at deployment time e g where did we put the IES and what is its release code 8 1 1 Launch Precautions e IES can be launched using an A frame crane or any lifting mechanism that allows you to lift the entire instrument including the anchor see the following section off of the deck and then swing the entire assembly over the side and into the water A 5 16 8mm diam fiberglass pin supports the IES anchor This pin has breaking strength of 300 400 kg The integrity of this assembly should be checked by first raising the IES and anchor off the deck and checking for any slippage of the release block parts before moving the system over the water In this way if there is any failure of the delicate release block parts the anchor will fall to the deck and not in the water Have a fully armed release block assembly ready to install in case of problems e As stated above the weakest release block part has a breaking strength of 300 400 kg Even though the anchor will weigh about 50kg this limit can easily be exceeded if there is any jerking of the lifting line during launch If the lifting line is a steel cable this problem is significantly exacerbated a one meter loop of nylon line should be inserted between the steel cable and the quick release hook to act a
36. check capacity of flash card all systems Go report error SAVE mission configuraton Y write an OPERATE record create a new set of data files if enabled T _xx dat P _xx dat E _xx dat F xx dat write dt records in all data files Y clear the day buffers RAM Y enable amp reset the watchdog 11 min Y Data Acquisition Loop Figure 2 3 IES RESET program flow exit to PicoDOS gt prompt no return 2 6 INVERTED ECHO SOUNDER MODEL 6 2 2 3 USER INTERFACE MENU MODE Previous sections describe how to access the IES menus by resetting or power cycling the instrument The menu mode is also accessible without performing the RESET routines 1 without clearing the day buffers RAM and without creating any new data files See the next section for a description of the wake up cycle 2 3 1 One Minute Warning By referring to the clock used to set the IES internal clock the user can determine exactly when the instrument will perform its data acquisition tasks If the user wishes to establish communications with the IES without using the RESET function power cycle OFF ON or RESET push button there is a two second window of opportunity every ten minutes to do so These windows of opportunity begin ten seconds prior to the ten minute mark of the time reference mentioned above e g at 09 50 19 50 20 50 etc after the hour To make it easy for the user to be ready f
37. data file called T076_2 dat will be created when the data acquisition mode is re started e New data will be appended to these most recent files until the next mission configuration save In other words each new restart via the menu will create up to four new data files E _XX dat to hold engineering data T _XX dat to hold travel time data P _XX dat to hold pressure and temperature data and F _XX dat to hold raw pressure and temperature data The XX indices of the E amp F files will all be the same after any save restart 44 INVERTED ECHO SOUNDER MODEL 6 2 4 2 3 Data Recording Day Buffers and the Time Stamp Each record will be written to the memory card file on a separate line The records are written in ASCII text System log records and meta data records begin with record type ID characters as described below to distinguish them from data records Meta data records will start with an ID character to distinguish the type of data in the file Data records other than meta data records all start with a time stamp hours elapsed since 1970 1 1 00 00 00 which is compatible with the time manipulation functions of ANSI standard C programs and indicate the hour of data collection All data file records other than metadata records are measurement values delimited by a null space character as described below At the start of a mission numerical arrays are created in the IES volatile memory RAM to hold a
38. en Us 2 6 2 3 2 ES Main Menu 2 22 nennen 2 7 2 3 3 ES Mission Setup Menu u cosita E ee vege er yeah 2 8 2 3 3 1 Saving a New Mission Configuration 2 9 2 3 4 Optional Sensor Menus 0 0022 2 10 2 3 5 IES Memory Card Menu 2 11 Chapter 3 ADVANCED PLANNING amp PREDEPLOYMENT TESTING 3 1 EORNM es 3 1 3 2 JES SELF TEST MENU 5 idee reb 02822 2 2 an er kann 3 2 3 3 BATTERY LIFE A sn I RARI A RUE 3 4 3 3 1 Replacing the Batteries 2 gt re a he RE ERE eren TiS 3 5 3 3 2 De Passivating the Battery 2 47 2 2 3 5 3 4 DATA ACQUISITION SCHEDULES 0 0 0001 3 6 3 4 1 Travel Time Measurements 000 0021 3 6 3 4 2 Pressure amp Temperature Measurements 02 3 6 3 4 3 Pressure amp Temperature Raw Data Measurements 3 6 3 4 4 Engineering Data Measurements 0 01 3 6 3 4 5 Memory Card Operation Schedule 1 3 6 3 5 MEMORY CAPACITY VS DEPLOYMENT TIME amp SAMPLING SCHEDULE 3 7 3 6 TEMPERATURE amp PRESSURE 21 3 8 3 7 ACOUSTIC OUTPUT vs
39. marker pulse 10 0kHz or 11 0kHz and must then receive data as a sequence of pulses 11 5kHz then 12 0kHz and then 12 5kHz etc any out of sequence arrivals will not be accepted by the receiving software 10 5 PDT Receiver Data Logging Once a receiver program is invoked the data received will be saved in an appropriate output file burst dat if converting burst telemetry data or filet dat if converting file telemetry data The data in both files are composed as records For burst telemetry each record includes the sample number the corresponding tau value the pressure value and the speed amp heading values For file telemetry each record corresponds to a line in the IES s telem dat file and includes the year day tau acoustic travel time measurement pressure speed and heading The converting receiver software calculates the delays between the marker pulse and each of the five following pulses and converts the delays to the appropriate engineering units as outlined in figures 10 1 2 amp 3 10 4 INVERTED ECHO SOUNDER MODEL 6 2 10 6 Receiving Burst PDT vs File PDT As stated above the IES utilizes two modes of PDT telemetry burst and file The timing and the protocol of both telemetry modes is identical the difference between burst and file telemetry is in the processing and scaling of the data prior to transmission 1 the resolution of the data values The following sections describe the difference between the two data
40. measurements taken every ten minutes If a P amp T measurement were taken every 30 minutes it would look like example 2 that follows CHAPTER 4 DATA RECOVERY amp ANALYSIS 4 9 4 3 4 Pressure and Temperature Data File cont d Example 2 P 2001 11 21 12 48 26 039 87087 10 5 842375 4036 615 2110 00 0 00 47948 39 3713 318 162670 80 0 037720 0 00 30 28409 2 333273 60 53492 71 7080 0 00 0 00 0 00 27954000 00 00 00 00 10982 19447 279541 10863 19479 00 00 10244 18838 00 00 279542 9569 16586 00 00 9386 13365 00 00 279543 9532 10318 00 00 9717 7883 00 00 279544 9854 6048 00 00 9956 4677 00 00 279545 10029 3647 00 00 10076 2865 00 00 279546 10114 2259 00 00 101341787 00 00 279547 10164 1412 00 00 10180 1110 00 00 279548 10189 867 00 00 10201 667 00 00 279549 10209 503 00 00 10214 367 00 00 279550 10225 251 00 00 10226 156 00 00 Example 1 amp 2 Notes gt Inexample 2 measurements were taken on the hour and at 30 minutes after the hour The zeros in the record signify that measurements were not taken at the 10 20 40 and 50 minute wake up times The zeros will be ignored in the data processing and these data will be processed as a time series of measurements taken 30 minutes apart gt In both examples the hour value on the first travel time data record corresponds to the first hour of data collection However it may or may not be an hour of the day stamped in the meta data T record because the IES may have been t
41. no data Examples using the table For tau 10min P amp T 10min DCS 10min 591K 30 days 7 1M yr For tau 10min P amp T 10min DCS 20min 372K 30 days 5M yr Standard instruments have a data capacity of 32Mbytes 3 8 INVERTED ECHO SOUNDER MODEL 6 2 3 6 Temperature and Pressure Offsets The Paroscientific pressure sensor temperature measurement is accurate to 2 C This is good enough to calculate temperature compensation for the pressure measurement but not acceptable to provide temperature compensation for the Bliley reference frequency oscillator which is used in the pressure measurement Paroscientific Inc has assured URI GSO that the poor accuracy is a fixed offset error that can be corrected by measuring a known ambient temperature with the IES and entering a zero offset value to make the measured value the same as the true value To confirm that the proper pressure and temperature offsets are installed in your PIES let the sealed up instrument reside at a known stable temperature for 6 hours and follow these steps with the IES acoustic transducer facing UP Select D from the IES Self Test Menu and note the reported temperature value Subtract the reported temperature from the known temperature and note the difference as Tdif in degrees C Don t forget to note the sign of the Tdif 3 Go to the IES Mission Setup Menu and select H Enter pressure sensor conversion coefficients When queried to modi
42. of the air from inside the sphere with a vacuum pump This removes most of the moisture that can condense when the sphere is cooled at ocean depths and also provides an indication of how well the sphere is sealed prior to applying the sealing tape Simply remove the vacuum port screw and hold a plastic hose to the port until the vacuum sensor needle points to the green dot this is about 14 36cm Hg The vacuum port is so small that pulling the plastic hose away and quickly inserting the sealing screw will not allow enough air back into the sphere to change the vacuum significantly Replace the vacuum port o ring after every deployment Examine the o ring on the sealing screw with a magnifying glass and remove any dust particles The o ring should be lightly greased with o ring lubricant Since the IES is usually deployed in a low temperature environment it is important to perform the glass housing closure in a dry atmosphere AND include packets of desiccant silica gel to prevent any condensation collecting on the IES circuit board An alternative to using the vacuum pump to seal the hemispheres is to direct some warm air from an electric hair dryer inside the sphere as you close it up as the air cools a vacuum will develop that will hold the hemispheres together Be careful not to overheat the electronics If the hemispheres do not seal check for grease or dirt particles on the glass sealing faces If you use this method it is particularly i
43. on the schedule selected by the user At the end of each hour the value s is are despiked and sorted The values are then 99 73 windowed around the median resorted and that median value saved in a 72 element array of hourly values that span three calendar days the data from any partial day at the beginning of the deployment are discarded At the end of each calendar day after the array of 72 hourly values is filled a Godin 25h 25h 24h detiding filter is applied and the detided average pressure centered on the previous 72 hours is written to the telem dat file The 72 element array is then shifted right removing the oldest data and making room for the next 24 hourly pressure values 10 2 3 current meter data water speed data in rectangular coordinates U V east amp north components are processed individually through the same algorithms used on the pressure data as described above The data are detided using the same Godin 25h 25h 24h filter and also centered on the previous 72 hours U and V values are written to the on board data storage but are converted to polar coordinates when written to the telem dat file For acoustic telemetry the current measurement is in speed cm sec and heading compass angle in degrees increasing clockwise from North CHAPTER 10 ADVANCED ACOUSTIC TELEMETRY 10 3 10 3 IES Schedule for PDT Operations The IES wakes up from low power sleep every 10 minutes and performs all data collection tasks t
44. release feature will be activated only if there is no other method to return the IES to the sea surface either the acoustic command system has failed or the user could not return to or locate the instrument This emergency back up feature cannot be disabled directly the user must enter some future auto release date and time otherwise the IES will not start its data acquisition mission It is felt that if the acoustic release system has failed or the user cannot return to recover the instrument the IES can use the last energy in the battery to return to the sea surface and with luck be found and returned The selection of the auto release date and time is often difficult because ship availability for such an unplanned event is unpredictable The best way to select the auto release date and time is to enter the most probable date after the planned recovery that a rescue ship may be available When this date is entered at JES Setup Menu selection E the IES will calculate using the existing operating schedule and output power level the battery capacity required to reach that date If it is impossible to install the required battery capacity calculated by the IES the auto release date will have to be modified or the auto release function disabled as discussed below Setting the auto release date and time further in the future than the installed battery will support effectively disables the auto release function When the system bat
45. sensor is changed the internal fitting seals should be retested to comply with the anticipated deployment depths Between deployments be sure to perform the pressure port maintenance procedures outlined in Chapter 9 1 1 The only o ring in the pressure port assembly is between the titanium port and the glass and can be inspected from inside the hemisphere The vacuum port has two o rings one between the port and the glass sphere and another between the port and the external sealing screw The o ring seal between the port and the glass can be inspected from the inside of the glass sphere make sure that the rubber is flat against the glass Since the port sealing screw is removed and reinserted for every deployment great care should be exercised in examining the o ring and sealing surfaces for dirt amp wear use magnifying glasses to examine these pieces a leak here is catastrophic CHAPTER 8 SEA OPERATIONS IMPORTANT DETAILS 8 1 Chapter 8 AT SEA OPERATIONS IMPORTANT DETAILS 8 1 DEPLOYMENT For its measurement capabilities the IES Model 6 2 is small and inexpensive However its release mechanism is somewhat delicate and requires a little care during the launch procedure It is important to follow the launch guidelines in this section IMPORTANT To assist in keeping a record of important numbers and times an IES Deployment Form is provided in Appendix E of this manual Make a copy of this form for each IES prior to deployment
46. single day s data These arrays are referred to as the day buffers They are initially filled with zeros which get replaced with measurement values as the day s data acquisition progresses Each element of the day buffer arrays corresponds to a particular measurement and time of day Data are saved in the day buffers until the end of the day when data records are composed and written to the memory card As outlined below except for the beginning and end of the mission memory card write operations will occur at the end of every day actually after the 23 50 activities the end of the measurement day After the day buffers are moved to the memory card all the day buffer values are reset to zero and the data collection process is repeated for the next day Note Each row in a day buffer array corresponds to data collected during a single calendar hour and at the end of the day these rows get composed into a data record If any data have been collected during the hour the entire row record will be written to the memory card Hence when the mission was started it is likely that the first row record will get only partially filled 1 array values corresponding to measurement values in that hour before the IES was started will be zero Likewise at the end of the mission when the day buffers are written to the memory card in response to the release function being detected there will likely be some zeros partially filling the last record
47. stabilized conditions resolution can approach part per billion In the typical PIES application where the temperature and pressure are changing slowly and are relatively stable the estimated sensor resolution is part in 10 million In the PIES the pressure channel electronics measure with a resolution of about 1 64 000 000 that s about 0 00016 psi or about 0 16 mm H50 for a 10 000 psi sensor This ensures that the PIES pressure measurement resolution is limited by the capabilities of the sensor and not by the PIES electronic circuits See additional technical and application notes at www paroscientific com Warning The resolution of the pressure measurement is proportional to the full scale range of the sensor Over pressuring the sensor by 20 of full scale will result in permanent damage use caution when choosing sensor ranges less than 10 000 psi 1 7 1 PIES Measurement Technique The Paroscientific Digiquartz pressure sensor output is a frequency modulated fm square wave signal i e the output frequency is a function of applied pressure The PIES pressure channel measures this frequency by first dividing the signal frequency by 2 9 and then measuring the time between two successive rising edges of the signal this period is typically about 16 seconds Any pressure change noise during this 16 second period is integrated into the result The period measurement is made by counting a temperature calibrated 4 0MHz referenc
48. strip is mechanically stabilised with sealant tape 5 For installing and fixing instruments inside it is suggested that glass glues are used They are commercially available they reliably bond metal or synthetics to glass We are glad to support you in special engineering questions Sealing Material Sealant Strip TERROSTAT VII Iso Butylrubber grey 20x2mm for frequent opening and closing or TERROSTAT 81 Butylrubber black 20x2 mm for permanent sealing Sealant Strip 3M SCOTCHRAP 50 50 8x0 254 mm 30 4 m long 28209 Bremen Email info nautilus gmbh com THIS PAGE INTENTIONALLY LEFT BLANK TP37 RELEASE BATT Q10 C IRF5305S BATTERY CONNECT S D p D10 gt 3 2 R134 0 500 4 RELEASE_BAT
49. the Benthos DS 7000 must be disconnected for this to work if the battery is connected the output power is always max a bug in the DS 7000 design Usually lower output power 1 3 and moderate gain 4 5 work best 4 Let the ship drift until you have a clear idea of the effects of wind and current Once you know this information you can determine if you can collect all the data in one pass or will require multiple passes Move the ship to a position that will allow maximum exposure time over the IES site during the telemetry transfer For best results keep the ship within 1 5 miles horizontal of the target site 11 2 1 Telemetry Log Form Print a copy of the following page for each scheduled telemetry site and fill in the appropriate section of the form prior to arrival at the site CHAPTER 11 Acoustic Tracking amp Telemetry At Sea Operations 11 5 Inverted Echo Sounder Model 6 2A Telemetry Log Fill out this section prior to site IES S N Project Site Year day Operator Date Warning no telemetry between 23 30 00 00 GMT 30 __ 00 LOCAL PIES Firmware rev _ cPIES Firmware rev TELEM cmd RELEASE cmd Deployed yr day _ Total of records yr day deploy day 3 Site depth Tau sec Yr day range Telemetry duration PIES records 34 x 15 minutes min A cPIES records 27 15 minutes min Arrive at site GMT 1 ping E GMT CLEAR c
50. the RELOC module The standard RELOC module consists of a radio beacon 156 875MHz marine band channel 77 1 second long pulses 3 seconds apart and a xenon flasher 1 million candlepower about 1 second flash rate with a light sensitive switch An inexpensive hand held radio direction finder can be obtained at L Tronics Inc Santa Barbara CA USA 93111 tel 805 967 4859 web address www ltronics com portable htm Model Little L Per VHF receiver tuned to channel 77 500 A sophisticated IES compatible direction finder with a ship s mast antenna can be found at Taiyo Inc Japan web address www taiyomunsen co jp Model TDL L1620A RDF 8 2 4 Flag and Reflective Tape The IES is equipped with an orange flag with reflective edges 23cm x 46cm that stands about a meter above the sea surface With the IES s reflective tape and xenon flasher it is in some ways easier to recover the IES in the dark than in daylight 8 2 5 Floating Recovery Line The IES has a 10 meter polypropylene line and float attached to the hard hat bridle This line will float on the surface and a grappling hook can be thrown across it from the recovery ship to bring the IES alongside The recovery line should not be used to lift the IES aboard but should be pulled taught from the ship so that the bridle loop is exposed A hook attached to a lifting mechanism should then be attached to the bridle and the IES lifted aboard by the bridle During lifting
51. to break any bubbles that may have formed during the filling process add more oil if necessary Fill the oil reservoir in the plastic pressure fitting in the same manner Quickly flip and install the reservoir fitting into the port Oil without air should ooze from the end of the fitting tube as you tighten the fitting Be sure that the excess oil does not seep into the o ring area under the titanium fitting The reservoir fitting should be tightened by hand leaving the reservoir tube facing away from the vacuum port A pictorial of these operations is shown in Figure 9 1 Medical syringe reservoir Dow Corning 350 CS Glass sphere Pressure port Pressure sensor Install reservoir allowing excess Fill pressure port and reservoir oil to flow out Repeat the process with oil until a puddle forms if air bubbles are visable in reservoir Eliminate air bubbles with a tube Rotate reservoir fitting until clean wire tube points away from vacuum port Figure 9 1 Filling the Pressure Port 9 2 INVERTED ECHO SOUNDER MODEL 6 2 9 1 2 Pressure Sensor Calibration A calibrated dead weight tester should be used to verify the accuracy of the pressure sensor between deployments For this test the plastic fitting on the pressure port must be removed and an appropriate high pressure fitting Parker 1M3SC2 male connect to o ring pipe thread installed between the pressure port and a dead weight tester Before performing a calibr
52. when pauses will occur is to note the year day number at the start of the transmission and monitor the yr day number progression CPIES will pause every 27 days and PIES will pause every 34 days 3 If you get lots of MSB markers that s a sure sign that the gain is too high Simply enter lt ctrl c gt to stop the program then run cf m to close the comm port Restart the receiver program and enter a lower gain value 4 On the noise indicator laptop the ideal gain settings will show 3 4 returns for every data ping More than that reduce the gain less than that monitor for missed pings Use the lowest gain possible to minimize false signals Hint A gain of 2 3 will work at a range of 1 5 mile at 3km depths in calm seas 5 Be aware of the acoustic influences on your transducer e g depth sounders altimeters bow thrusters ship positioning systems water hoses running over the side dolphins air bubbles from wherever etc Use the noise monitor computer display to detect amp minimize these noise sources For example We found during KESS 2005 on the R V Revelle while using the ship s transducer air bubbles from the props would block acoustic signals when the ship was backing down CHAPTER 12 Aanderaa Acoustic Doppler Current Sensor Option 12 1 Chapter 12 Aanderaa Acoustic Doppler Current Sensor Option The IES Model 6 2 can be configured to measure horizontal current velocity 1 speed and direction at a single point up t
53. 1 gt internal communications cable standard RS 232 cable 9 pin female female P N 54 11 gt external communications cable 6ft 10ft 25ft P Ns 51 05 06 07 gt battery circuit board assy P N 12 13 gt external connector plugs ON OFF P N 32 53 RS232 P N 32 54 gt thru the glass cable assembly P N 13 12 gt pressure port titanium P N 50 13 gt resevoir assy plastic P N 50 19 gt vacuum port titanium P N 50 18 gt release block cathode P N 13 05 gt O ring grease P N 38 18 or 19 Dow Corning 4 compound or Parker O Lube Grease gt pressure system oil P N38 17 Dow Corning 350 CS lifting belt bands and grip P N 11 13 P Ns 50 22 and 50 20 transducer guard P N 50 07 gt release block guard P N 50 06 gt flag holder arm amp mounting nut P Ns 50 08 and 50 12 flag P N 52 09 recovery float P N 50 15 gt desiccant P N 37 06 Stable mooring platform for deployment with pressure sensor at sites with high bottom current gt 50cm sec P N 50 27 gt Memory cards 16 512Mbyte standard 16MByte P N 20 53 nylon bolts and nuts 1 x3 8 16 bolt P N 44 11 1 25 x3 8 16 bolt P N 44 12 2 x3 8 16 bolt P N 44 13 3 8 16 nut P N 44 14 3 8 washer P N 44 15
54. 1 SCROLL CAPS NUM Capture Print echo Figure 12 4 C PIES Self Test Menu Note Selection E Selecting E on the Self Test Menu will initiate a single DCS measurement This takes about 40 seconds and the data record will be displayed in the following format when the DCS is configured as outlined in the previous section 12 6 DCS data record lt LF gt yr mo da lt space gt hr min sec lt TAB gt s n lt TAB gt val1 lt TAB gt val2 lt TAB gt val8 field key s n DCS serial number vall current speed North component cm sec val2 current speed East component cm sec val3 water temperature C val4 signal strength in dB re 1023 val 20 log o raw value 1023 val5 compass direction degrees magnetic 0 when x axis north val6 tilt North degrees tilt toward the north val7 tilt East degrees tilt toward the east val8 ping count 0 300 number of ping sets used in one average Notes All data values are in ASCII text Each record is written on a single line with a time stamp as shown 12 7 DCS error record This is the only error message available and indicates a missing or short data record It usually indicates that there is no response from the DCS sensor lt LF gt yr mo da lt space gt hr min sec lt space gt NO DCS DATA AVAILABLE The test described above will indicate the general functionality of the DCS but does not indicate the proper operation of the Doppler flow sensor electronics unles
55. 1K 196 10uF 16V 0 tuF 4 4 1 Q TP1 t 4 4 Rs QUIET GND T U14 5V R83 330K DA7 T J MA159ACT c65 28 T do install PIC_XMIT LISTEN otur T L4 a lee XMIT LISTEN sp 4 5 152 2 6 9 Pa N 4 1 G1 D1 a 84 CF1 XMT LISTE 4 E a 01 e DRIVE DRIVE R82 2 2K IRF7317 D1 DA4 MA159ACT Uia IRL540NS BR TP24 PA DRIVE Q6 42D Namsus a 5 6 PA DRIVE gt 1 8 D2 4 1 DA5 2 NC1 NC8 7 1 D4 U13 4 5V 319 7 4 GINA c Sis gt 410940 VS s f R60100 3 NC LOAD 253 2 1N4002 J1 U15 5V 3 Pts ms 7 4 T INB t 2 CIL DNULE o IXDUCER 7Ha 015 OiduF 2 51 017 159 losen 7 CTL LOAD2 g 4 2 DA6 MA159ACT 1 8 3 6 PLB150 2 nis 003 de Bo Ress 289 E mo 8 woo e fYYTL 9 tras 3 6 10K 57 100K 000 NLS 017 IRF7314 9 50 ar L533mH 1 OUT R712 4 16V R62 RDD104 S R72 100K IRL540NS PR CAP MONITOR 226 12kHz Y 1055 CAP 1 9 Od Y2120kHz PING TRIG da ON spe F XMT gt omit a University of Rhode Island mix pati R104 105W 5 Bi yeah Graduate School of Oceanography 3 RELEASE BATT SW os e 1 5 8 OUTPUT DRIVER PING_BLOCK ids 18 D5 SMB5818 STBY aS 56 R63 Ha Do ACS BOOST SW 47 000uF 25V Size Number 1 56 2 Rev O0iuF 2 2K E E 4490 IE D8 SMB5818 x B Design Gerry Chaplin A 16 IRF7317 Date Feb 24
56. 2 3 3 TES Mission Setup Menu IES HyperTerminal File Edit View Call Transfer Help 3000000000000000000000000006 TES Mission Setup Menu Set date time clock Select travel time measurement schedule Enter water depth lockout time and output power level Enter auto release date amp hour Enable disable the acoustic telemetry data file Enter a mission statement Optional Sensors J Pressure Sensor Setup Menu S SAVE mission configuration G GO review save configuration and start data collection Q Return to Main Menu Connected 0 02 37 9600 8 N 1 A Set date time clock displays the current IES date time To modify the time enter date time that is slightly ahead of your timepiece and press lt enter gt when the times match the new time will be saved and will remain accurate even when the IES is off To confirm the correct time select while monitoring your timepiece and compare the times After selecting A simply pressing lt enter gt without entering a valid time will leave the timing unchanged B Select travel time measurement schedule displays the current schedule and other options including disabling the travel time measurements To change the schedule select an option and the new schedule will be displayed Note that a new schedule has not yet been saved to non volatile memory this will not happen until data acquisition has star
57. 2 9569 16586 9450 15557 9397 14463 9386 13365 9417 12294 9473 11272 279543 9532 10318 9593 9436 9659 8626 9717 7883 9763 7210 9810 6604 279544 9854 6048 9890 5546 9928 5093 9956 4677 9980 4305 0013 3958 279545 10029 3647 10048 3363 10063 3105 10076 2865 10094 2643 10104 2442 279546 10114 2259 10125 2089 10130 1930 10134 1787 10141 1652 10153 1526 279547 10164 1412 10167 1304 10178 1203 10180 1110 10179 1023 10181 944 279548 10189 867 10194 795 10198 727 10201 667 10209 607 10203 555 279549 10209 503 10209 452 10209 412 10214 367 10221 325 10217 288 279550 10225 251 10219 216 10228 185 10226 156 10227 129 10231 102 279551 10229 77 10236 52 10233 30 10232 11 10236 11 10239 27 279552 10243 50 10237 66 10242 83 10243 100 10241 112 10246 129 279553 10244 141 10239 151 10242 166 10241 176 10247 188 10248 201 279554 10243 211 10241 222 10240 228 10248 242 10252 252 10254 259 279555 10244 265 10248 275 10244 279 10248 288 10250 296 10254 300 279556 10247 308 10252 312 10253 315 10260 321 10257 325 10259 327 Example 1 Notes gt meta data header record is wrapped to fit this page the data records are not wrapped gt Each data record row begins with an hour number e g 279540 has up to 6 pairs depending on P amp T schedule of pressure and temperature measurements and ends with a carriage return The zeros in the example represent pressure measurements not taken gt This example shows
58. 2 D5 1 4148 VP0106 Dl3 Rae 82 TRIG LED J1 12 2 12 S1B FREQ SELECT ug 5v R14 19 14119 CONTINUOUS TRIGGER 57 DzB U5 A TP5 E 31 20 D6 R16 CD4011 alt US B 74 4049 SCOPE TRIG 0 4010 Mv gt 5 me 2 a 74HC4049 S ser Sal er U6 C E ap D START triccer 194148 gt R17 2 2K 74HC4049 0 4 10 RESET 2 us A 3 5 A 3 o U5 C SCOPE TRIGGER 1 0 14 4013 4 DESEE 7 R19 1K 17 ES R11 Sues po Y 5 UzA A ae By START SELECT WN 5 Y t UE 4013 Rig 1K 9 1 04011 U7 B R37 cis 990 8 GND NV 1 18 i J1 9 gt 5 10K 01uF XZ 57 V Jt 8 gt 8 gt 6 LEVEL ADJUST AMANDA 1N4148 K u5 D CD4001 Y 9 10 74HC404 sa 41 1 049 R24 0OHM 5V t sl 4 11 28 07 E 7 2 9 E 7129 VOX TRIG 2 a E 2 E 1 Ti jd R7 ei Htc Ba ur 204001 USC og 9 E 7134 1 1 D1 22uF 7100 U1 B 4050 2 m 74 2 24 8 Our ECHO QUT bin j 4 4 10 E 10 3 6 33 TT J1 33 47 74 14 1 4148 74HC14 E U3 D TRIAD SP 67 C6 100nF 74HC14 CD4001 MIC ooiur 1 Ba D2 UTD M Lib ty gt 24 E 1 30 3 i C2 gt u12 5v 4_ voc U3 E 7 J1 5 5 JE 7 8 2 10 H 7 GND SPEAKER E 022uF 1 4148 74 14 e 14 15 83 2N3904 1M 1 a U3 F 3 U10 5V 1 voc J1 6 2 8 GND WV
59. 200 the battery drain during current measurements 5 x 1200 60 100 mAmperes Repeat Warning The above commands should not be modified without consulting an instrumentation development engineer at the University of Rhode Island Graduate School of Oceanography Tel 401 874 6505 12 0 INVERTED ECHO SOUNDER MODEL 6 2 12 5 DCS Testing With the IES When the DCS option is installed in the Model 6 1E IES an additional test selection will be added to the general self test menu see selection E in Figure 12 4 SS IES HyperTerminal ioi Fie Edit View Call Transfer Help Di al3 alal 3 3 3 3 3 3 3 JE JE JE JE JE JE RR TES Self Test Henu 3 3 3 3 3 JE JE JE JE JE JE JE Ping Test 10 pings at programmed output level 4 sec rate Travel Time Test a single TT measurement Precision frequency reference test measure on CF1 39 Pressure sensor test a single P amp T measurement pair Doppler current sensor test a single DCS measurement RTC Clock Freq Test a single clock offset measurement Output Power Test accurate with ITC 3431B transducer only Check memory card View Engineering Data Release Relay Test ON for 38 seconds Return to Main Menu A B C D E F 6 H J K Q Connected 0 08 31 ANSI 9600 8 N
60. 4 R106 L E al 4 2 1 our u24 154K 1 C52 F ZINC 8 los 105W send gno Vat 20 C75 10UF 16V C73 074 IG SELECT KE C82 5 JACND FBIZ 4 la Q8 35V 47uF 35V MAX472CSA 47uF 35V SHON G 3 IRL540NS D REL CURR SENSE 177105 1 97 4 1 6 55 IRL540NS SYS_CURR_SENSE t 3121 C76 gt R110 R107 109 CHARGE R111 DAS 40 10K 1 1M 100K MA159ACT DISCHARGE 4 4 4 4 4 oe 3 3V U23 C U23 D R67 1 0 TP34 7 6 9 1a N U23_3V ie R114 3 3V Res R70 10 10 R155 us2av 17 MM74HC4049M 74 4049 K Ne p 5 U25_3V DAS University of Rhode Island R66 1 0 R156 D ACS BOOST on 44 1 PARE 4 8156 pro An ED HM ut RELEASE ON 21 415 SPARES MM74HC4049M Graduate School of Oceanography R68 1 0 2159 ppt y 3V 118 a ag 3V 7 in 912 7 c58 NM U 22 159 Title JES POWER CONDITIONER 0 tUFAS R126 1 0 R160 An 3V c tS VV U27 3V _1C87 _1677 U23 F MM74HC4049M Size Number IES 6 2 Rev R77 1 0 0 1uF 0 1uF U23 G END d 14 215 B Design Gerry Chaplin A Date Oct 4 2005 Drawn by Chaplin WU Filename IES62_A sch Sheet 1 of 6 A B C D THIS PAGE INTENTIONALLY LEFT BLANK
61. 99999 87100 279541 871022 871010 871123 870998 871016 871038 871022 871007 871007 871001 871108 871007 871053 871032 871087 871035 871084 871078 871056 871035 871050 871038 871038 871047 279542 871053 871062 871047 871081 871050 871044 871090 871065 871056 871065 871078 871059 871078 871078 871065 871084 871087 871087 871084 871090 871105 871102 871099 871102 279543 871123 871111 871117 871114 871117 871117 999999 871114 871117 871111 871114 871117 871114 871114 871111 871126 871123 871126 871102 871099 871111 871117 871117 871114 279544 871117 871132 871129 871132 871117 871129 871114 871120 871111 871114 871114 871114 871111 871126 871126 871126 871132 871114 871132 871129 871126 871120 871111 871126 279545 871120 871132 871120 871114 871129 871132 871126 871111 871126 871126 871129 871114 871126 871108 871123 871108 871142 871129 871129 871136 871123 871117 871126 871132 279546 871126 871117 871120 871120 871136 871129 871145 871123 871132 871129 871129 871132 871126 871123 871126 871117 871142 871132 871129 871142 871126 871132 871129 871120 Example Notes gt The rows of data are wrapped to fit this page In fact each record row begins with an hour number e g 279541 has 24 travel times representing an hour of data collection and ends with a carriage return The zeros in the example represent travel time measurements not taken and the 999999 represent measurements attempted but no echo
62. AMING 10 3 10 5 PDT RECEIVER DATA LOGGING 4 2 0 02 10 3 10 6 RECEIVING BURST PDT vs FILE PDT 10 4 10 7 BURST TELEMETRY REPORT 2 10 4 10 8 BURST TELEMETRY CHECKLIST 2 2 10 5 10 9 FILE TELEMETRY Et dct ee IR RH eed 10 7 10 10 FILE TELEMETRY CHECKLIST essen 10 10 10 11 ADDITIONAL TELEMETRY OPERATIONS NOTES 10 11 10 11 1 Telemetry Session Interrupt Saving the File Pointer 10 11 10 11 2 Telemetry Session Interrupt Pause at 2330 hours 10 11 10 11 3 Telemetry After Failed Release 2 10 12 Chapter 11 Acoustic Tracking Telemetry At Sea Operations 11 1 11 1 TELEMETRY CRUISE PREPARATIONS 22 11 1 11 1 1 Hardware amp Software 01 11 1 11 1 2 Shipboard Equipment Setup sess 11 2 11 2 PREPARATIONS PRIOR TO INDIVIDUAL SITES 11 4 11 2 1 Telemetry Log Form rS e era Be 11 5 11 3 STARTING AND MAINTAINING A TELEMETRY SESSION 11 6 Chapter 12 C PIES Aanderaa Acoustic Doppler Current Sensor Option 12 1 12 1
63. CHAPTER 5 ACOUSTIC COMMAND SUBSYSTEM ACS 5 1 Chapter 5 ACOUSTIC COMMAND SUBSYSTEM ACS The Acoustic Command Subsystem ACS of the Model 6 2 IES is a block of circuitry on the IES board that is dedicated to receiving acoustic commands from a surface ship and converting those commands into control functions used to e locate a deployed IES e release it from the sea floor e acoustic tracking signals during recovery operations e initiate the data telemetry function This chapter describes the ACS and provides instructions on 1 how to set up the ACS on an individual IES and 2 how to set up the deck box either the EdgeTech Model 8011A or the Benthos Model DS 7000 Chapter 8 describes how to use the ACS during deployment and recovery operations The ACS has been designed to decode bit encoded commands like those produced by the Model 8011A deck box manufactured by EdgeTech Inc formally EG amp G Instruments The standard Model DS 7000 manufactured by Benthos Inc of Falmouth MA USA can be customized to transmit all of the IES ACS codes contact Benthos for details and cost The ACS can be configured via hardware switches jumpers to accept one each of the following code sets 4 transpond enable codes 4 telemetry enable codes 4 beacon enable codes and 64 release codes A fifth command CLEAR was created by allowing any properly framed command regardless of whether it is a valid command for the instrument to cancel
64. CLEAR AUX 2 gt 76 IMPORTANT Allow at least 15 seconds between command transmissions Recommendation Attach a label to the display of the deck box that matches the URI ID command number with its IES serial number and command function 5 6 INVERTED ECHO SOUNDER MODEL 6 2 5 3 ACOUSTIC COMMAND DETAILS IMPORTANT Responses from the acoustic command subsystem are blocked during travel time measurements so the user must be aware of the measurement schedule when using acoustic commands To prevent the ACS system from being left in an active state XPND or TELEM ON the CF1 computer will reset the ACS controller every midnight according to the IES clock this disables all ACS functions Transpond Enable XPND This command sets the acoustic command subsystem in the transpond mode When the command is accepted the system will reply with two 12 0 kHz pulses two seconds apart The command decoder will then continuously listen for 12 5kHz interrogation pulses and if detected will respond immediately with a 12 0kHz reply pulse After each transpond reply the system will wait for 4 seconds before returning to listening so the shortest recommended interrogation interval is 6 seconds The system will continue in the transpond mode until it has been disabled by a CLEAR command see below or a reset During travel time sampling the transpond replies will be blocked by the data acquisition function While in the transpond mode the system can re
65. CTD27 CTM31L DP68H OMM PWR 3 3V R120 100 37 e moa elsa a AUX PWR ENA RESET ACS 39 mas 79071 40 IQ SELECT ib m 41 loz 42 PAROS IRQS L 43 RSRxD RSTxD 4 R80 3 3K 45 IIRQ4 RxD DE J7 u22 R167 1 0 eu PORT 47 RsRTS 5 48 1 U41 E 1 o U23 3V 49 IRscTs iRa3 cTs 52 1 5 80 025 2 027 1 O 3 U28 G VCC E PAD hce RIS CM PE E 15 0 pout lt et RR i 915 E SHT75 AUX PWR SW 12 Inc nel IT ag 11 is AAR OMIT DB9F IF 19 xi 4 Pas re Cea f 2 GND C59 R125 OMIT J5 22pF Y3 e 7 0 1uF 43 3V i 1 8432MHz 22 University of Rhode Island 2 8 2 4 7 Graduate School of Oceanography 3 V 5 Tit 4 s 2 a COMM PWR SW R154 2 2K RELEASE 4 IES CF1 INTERFACE 9 Ei 5 RELEASE EXT_SWITCH 2 Size Number IES 6 2 Rev RS232 Design Gerry Chaplin A DB9M EXTERNAL CABLE 177 WU Date Feb 24 2005 Drawn by Chaplin Filename IES62_A sch Sheet 6 of 6 A B D THIS PAGE INTENTIONALLY LEFT BLANK
66. DEPTH CONSIDERATIONS 3 9 3 8 SETTING THE AUTO RELEASE DATE amp TIME eem 3 10 3 9 DEPLOYMENT CHECKLIST conocerte nieta a 3 11 3 9 1 Important Checklist Notes 3 12 Chapter 4 4 1 4 2 4 3 Chapter 5 5 1 5 2 5 3 Chapter 6 6 1 6 2 6 3 6 4 6 5 Chapter 7 74 7 2 7 3 7 4 7 5 Chapter 8 8 1 8 2 Chapter 9 9 1 9 2 9 3 9 4 9 5 DATA RECOVERY amp ANALYSIS 2222 2 1 4 1 DATA OFFLOAD TECHNIQUES 0 4 1 MEMORY CARD FILE 0 00 4 1 4 2 1 Fide Lypes 3 sace eee e ERE e dad Rn RE ERR sehen en URN 4 2 4 2 2 Data File Creation and File Names 2 2 4 2 4 2 3 Data Recording Day Buffers and the Time Stamp 4 3 RECORD TYPES amp FORMATS 4 3 4 3 T System Log File ui mer Et ero ee e et 4 4 4 3 2 Engineering Data File 2 22 20 4 5 4 3 3 Travel Time Data File ceret degen de da eph decade ele 4 6 4 3 4 Pressure and Temperature Data File 2 4 7 4 3 5 Pressure and Temperature Raw Data 4 0 4 3 6 Telemetty Data ee Er HER se 4 10 ACOUSTIC COMMAND SUBSYSTEM ACS
67. DER MODEL 6 2 THIS PAGE INTENTIONALLY LEFT BLANK CHAPTER 10 ADVANCED ACOUSTIC TELEMETRY 10 1 Chapter 10 Advanced Acoustic Telemetry Option for PIES and C PIES Hardware Configurations If a Benthos DS 7000 Acoustic Deck Unit with a 4 channel receiver is available 8 channel for C PIES applications the IES Model 6 2 advanced telemetry option may be utilized In addition to the deck unit the appropriate URI GSO telemetry receiver amp display programs running on Matlab 6 release 13 or above are required to implement IES advanced telemetry When the IES is deployed and configured for advanced telemetry there are two data reporting protocols that can be remotely activated acoustically via the DS 7000 deck box burst telemetry and file telemetry When the IES receives the TELEM command only one of the protocols will be activated depending on the time relative to the start of the mission as follows After the IES mission is started burst telemetry will be available until the IES has collected enough data three full calendar days to implement the data processing de tiding routines After enough data have been collected to make data processing meaningful the IES makes file telemetry available exclusively Both protocols use the same acoustic technique and general format called pulse delay telemetry PDT to transfer the data from the IES to the surface Both techniques are outlined as time lines in Figures 10 1 2 amp 3 Ref
68. IES will display operating notes as it performs its data acquisition functions After this step the user can turn OFF the IES and ship it to the deployment site when the IES is turned back ON the saved mission and the clock setting will be preserved and the mission will start without any further communications During this final step before starting a mission it is a good idea to turn on the capture mode of Hyperterminal and save a record of the setup as the IES starts its mission 2 3 3 1 Saving a New Mission Configuration Modifications to the mission configuration measurement schedules timed release sensor coefficients etc made while in any of the above menus will be saved only when the user selects SAVE or GO from the Mission Setup Menu so do not change values and then shut OFF or RESET the IES your new values will be lost The mission statement text will be saved only by using the GO selection to start a mission 2 10 INVERTED ECHO SOUNDER MODEL 6 2 2 3 4 Optional Sensor Setup Menus There may be additional setup menus depending on the optional sensors installed For example the menu shown below will be available when the pressure sensor is installed If no additional sensors are installed the Optional Sensors list in the Mission Setup Menu will not be displayed See Chapter 11 for a description of the Doppler Current Setup Menu IES HyperTerminal File Edit View Call Transfer Help RER HH Pressure Se
69. LUS MARINE SERVICE GmbH Handling Procedures for VITROVEX Glass Instrument Housings You have purchased a concept in deep sea instrument housings which is completely different to the common metal or synthetic materials After a period of familiarisation No Orings are used NEVER USE GREASE or OIL as a sealing aid Surfaces must be meticulously clean Tel 49 0 421 20754 0 you will highly appreciate the host of advan tages that glass offers for many applications It is necessary to emphasise the differences in handling the glass cylinders and spheres 1 Glass is sensitive to impact always handle with best possible care Plastic protective covers should be installed Using Perspex maintains transparancy Glass housings are only strong against PRESSURE not tension or shear or torsion Do not install in instrument platforms where they are subjected to such forces Thermal shock is to be below 100 C Evacuation of the housings is recommended for three reasons settle the parts firmly avoid inside condensation avoid excess inside pressure when the instrument is heated up for instance when it is exposed to sunlight Air would try to seep out and then cause a leak in the seal Blumenthalstr 15 Telefax 49 0 421 20754 20 Wipe with residual free solvent e g toluene and do not touch again before closing Sealing is done glass to glass with outside sealing strip Sealant
70. N for 30 seconds flasher ON only when dark With acoustic transducer pointing up radio and flasher OFF B Go to Memory Card Menu 1 erase all files enter D Go to Mission Setup Menu set the clock enter set the travel time measurement schedule enter B set the pressure amp temperature measurement schedule enter C set depth and lockout and output power level enter D set auto release time enter E see Chapter 3 7 enable disable the acoustic telemetry data file enter H enable disable the pressure sensor raw data file enter J enter mission statement enter K review save and start the mission enter D Test ACS system Fill out the IES deployment sheet see Appendix E Remember any properly framed command will trigger a 2 ping reply 9 1Hz 1 XPND interrogate 12 5kHz reply 12 0Hz tune deck box for 12 0kHz reception 2 CLEAR 2 ping reply then XPND function is disabled 3 TELEM extra pings at end of every burst Refer to Manual section 10 7 for details 4 RELEASE 2 ping reply then 4 additional pings all 2 sec rate then continuous 4 sec pings when the release block anode and cathode are momentarily shorted together Final Preparations before launch 1 After the release test simply RESET the IES by removing and re installing the red ON OFF switch 2 Listen for the double ping
71. ND SPARE PARTS Some IES parts are used up during routine deployments battery sealing tape release block anode anchor and line while others need to be replaced when they show deterioration e g release block cathode rubber cables o rings plastic parts Appendix F at the end of this manual lists maintenance kits special assemblies and spare parts available from URI GSO Equivalent second source part numbers are stated where applicable Contact URI GSO for pricing and delivery schedule CHAPTER 1 OVERVIEW 1 3 1 5 IES Model 6 2 SPECIFICATIONS General measured parameters data storage data capacity data playback data format communications measurement rate battery capacity life Acoustic Travel Time acoustic travel time bottom pressure amp temperature optional type ATA compact flash card 32 Mbytes standard opt 32 192 Mbytes removable memory card memory card adapts to type ATA card reader or RS 232 download MS DOS file formats data in physical units RS 232 fixed at 9600 baud 8 bits 1 stop no parity menu selectable burst sampling at 10 minutes to hour interval 120 Amp hrs standard optional 180 and 240 Amp hrs Lithium battery pack 2 5 year deployment depends on measurement schedule options added and water depth pings measurement ping interval ping duration ping frequency operating depth acoustic transducer bandwidth 3dB acoustic output power standard echo det
72. NVERTED ECHO SOUNDER MODEL 6 2 4 2 1 File Types There are a maximum of six types of files on an IES Model 6 1 memory card System Log File This file will include RESET records OPERATE records RELEASE record ABORT record mission statement deployment notes and error messages There is only system log file on an IES memory card and it is always present Engineering Data File The E file includes one engineering meta data header record and engineering data records It is always created regardless of data acquisition schedules Travel Time Data File The T file includes one travel time meta data header record and a travel time data record for each hour of operation The file is created 1f travel time measurements are scheduled Pressure amp Temperature Data File The P file includes one pressure temperature meta data header record and a pressure and temperature data record for each hour of operation The file is created if the pressure and temperature measurements scheduled Pressure amp Temperature Raw Data File This F file has the same format as the P amp T data file above but the data are unconverted frequency measurements from the Paroscientific pressure sensor The data value units are both Hertz instead of uPascals and degrees Celsius This file is created if it is specifically enabled see Mission Setup Menu selection J Telemetry Data File This file is created if the teleme
73. O Telemetry operations are rather complex and cannot be summed up in a few paragraphs refer to Chapter 10 Advanced Acoustic Telemetry Option for a description of the technique and instructions on how to use it After the IES is on the bottom perform the following test to determine that the travel time measurements are correct e Send the TELEM command to the IES e Verify that the IES responds with its two ping command acknowledgment if it does not send TELEM again and again until the correct reply is received e If you know the depth at the IES site you can calculate what the telemetry time should be For example if the water depth is 3000 meters the round trip travel time that the IES measures will be 4 seconds assuming sound speed at 1500m sec e Note the lockout time for each IES deployed If the telemetry number is in error and is a time close to the lockout time it means that the IES echo detector is too sensitive to ocean noise or the IES output power is too high In either case adjustments should be made before leaving the IES at the site Of course telemetry values much larger than expected given the water depth indicate that the echo detector is not sensitive enough or the IES output power is too low In either case if additional telemetry tests confirm a problem the IES should be recovered and adjustments made see Chapter 2 3 3 and 3 6 for related topics Sending the CLEAR command and verifying th
74. O we test the IES penetrators after every two deployments using a 5000Volts megohmeter and reject any that show a resistance of 100MegOhms CHAPTER 9 MAINTENANCE 9 3 9 4 RELEASE BLOCK A detailed drawing of the burn wire release mechanism is shown in Appendix D 1 A diagram of the release block assembly procedure is in Appendix D 2 It is very important that every detail of this assembly procedure is followed precisely Some additional important notes on the release mechanism e Even though the cathode wire does not get destroyed during the release activity it is a good idea to replace it every 2 3 deployments Some users report that the contacts in the cathode female connector relax after repeated use and reliable connection is lost e Be sure that there is 1 8 3mm of play between the end of the fiberglass and the cathode wire no more no less Under high pressure the release block compresses more than the pin so the pin could be jammed at release time if this clearance is not maintained e Before assembling the release block when you have all the parts together it is a good idea to simulate the release activity moving all the parts through their release anticipated paths This will confirm that there is no error in parts size e USE ONLY URI GSO PARTS ANY SUBSTITUTION MAY RESULT IN THE LOSS OF THE INSTRUMENT 9 5 Loading New Firmware IES firmware upgrades may become desirable to improve performance add feat
75. P N 44 25 Glass Sphere seal up kit P N 10 04 2 wide tape 1 roll 100ft P N 38 15 soft sealing tape 1 roll 25ft P N 38 16 Lithium Battery kits circuit board and battery cells for system release 120 30 Amp hour kit 12 cells P N 12 14 120 60 Amp hour kit 16 cells P N 12 15 180 30 Amp hour kit 16 cells P N 12 16 180 60 Amp hour kit 20 cells P N 12 17 Tool kit P N 10 07 vacuum port wrench Allen 2 5mm P N 42 08 9 16 nut driver 2 each P N 42 10 5 16 nut driver P N 42 12 O ring kit P N pressure port P N 48 02 Parker P N 2 015 thru the glass cable P N 48 04 Parker P N 2 016 vacuum port glass seal P N 48 03 Parker P N 2 011 screw seal P N 48 06 IES Test Accessories Kit P N 10 02 Echo simulator P N 11 14 Signal insertion cable P N 11 15 Release simulator P N 11 16 Spare mechanical parts kit P N 10 05 nylon hardware 1 25 x3 8 16 bolts with washers and nuts 2 nylon hardware 2 00 3 8 16 release block mount bolt 1 spare release block complete assembly 1 anchor line 5 16 diameter x 93 length Dacron 2 plastic cable ties 6 Appendix 2 Replacement Parts The following individual parts and assemblies are available Contact URI GSO for pricing refer to the URI part number gt Radio Flasher module with high band VHF 156 875MHz P N 12 03 gt Radio Flasher module with low band VHF 43 528MHz P N 12 09 gt Radio Flasher module with ARGOS receiver P N 12 1
76. PTint lockout data file index mission statement REL yyyy mm dd hh mm ss reserved of pressure adjustments of clock adjustments MISSION ABORTED at yyyy mm dd hh mm ss error message Definition of terms RES This RESET record is appended to the system log file every time the IES is powered up or reset It will indicate the time of reset If a system log file does not exist at this time it will be created as IES log Besides the time stamp which indicates the time the RESET occurred the reset type is a number that will be added later OPR This record is appended to the system log file when the user exits the menu mode to start the mission data acquisition and or when the instrument is powered up or RESET without the user going to the menus If a system log file does not exist at the time it will be created Besides the time stamp which indicates the time the record was composed the OPR record will indicate all the important operating parameters that apply to the upcoming data file set IES s n the IES serial number Paros s n the pressure sensor serial number TTint the time minutes between the start of travel time measurement bursts PTint the time minutes between pressure and temperature measurements lockout the time seconds that echos are blocked from the IES detector after a transmission entered by the user via the Mission Setup Menu data file index the file index of the data files just creat
77. T quiuis TP41 D11 R130 ei R141 R136 R138 4 IM 152 100 100 1 0 5VREL 2 D12 911 G U31 Ha 31 R131 1M R137 5 2 vout 4 2085 gt 140 Hider 1 3 VNO10 1 ON TW Ref Shutdwn gt 001uF 1M U31 5V m D13 Compout FB VCMP_5V 0 HE 3 R132 8 input GND 34 086 s 1K 030 npo BAT AR tue Et D14 5 1 1 ou ces 171120 migo gt 10uF 16 C60 U14_5V P 4 2 7 le 0 tuF a 1 3 NC p 10uF 16V 1M 1015 415601 4025 U15 5V o 4 obs ND SIGN hus S7 D18 15 D16 MAX472CSA i R170 R172 330K TP35 921877 p 585818 AUX PWR TP33 1 0 u39 D17 pom Sajal 330K BOOST 4 021 2 AUX PWR SW DB15M SMB5818 6 each 1 0 026 7 J 2200057 i 4 PWR Wi S1 D1 G2 02 5 BOOST SW _ PWR TP38 TP39 4 5 152 p2 6 7 CS BOOST_ R171 2 2K SYSTEM BAT 61 oe O GND ACS BOOST NM s 01 8 R143 E 40 77 7Vde N 148 330K 116 2 2K a7 COMM PWR 10 U33 U23 A 54020 v2 8 ComM_PWR_SW R133 3 c2 lAcs BOOST_ON 2 52 ze EXT SWITCH ve 127 44 4045 4 COMM PWR ENA A 4 s pif 8 Q12 R147 2 2K IRF7317 78 019 IRF5305S S D ONE A 3512 RISS 05000 4 YSTEM_BATT 2 LOCAL ON SMBJ15 T 3 REMOTE Gh R144 100 146 R142 L6 CTX20 4 D7 5 5818 D6 5 5818 R145 A 1M 100 NN s 7 3 pL gt PA POWER GROUND TYPES i 177 POWER QUIET SIGNAL DIGITAL U32 PWR
78. TERNAL STRIP CABLE GREEN ARROW YELLOW ARROW Figure 7 2 Placing the Sphere in the Hard Hat CHAPTER 7 1 5 ASSEMBLY 7 5 HOi 1 1 2 13 x 1 5 bolt BR ey flag base nut i 8 3 8 16 x 1 5 bolts n 8 3 8 washers d 1 1 2 washer UPPER hard hat 2 3 8 16 nuts 2 3 8 washers LOWER hard hat 8 3 8 washers a 1 1 2 washer 1 2 13 nut u 8 3 8 16 nuts Flag holder 2 3 8 washers DUE o 2 3 8 16 1 bolts Release Block Assembly 1 1 4 3 8 16 x 2 bolts Figure 7 3 IES Hard Hat Assembly Hardware 7 3 BURN WIRE RELEASE MECHANISM The burn wire release mechanism used on the IES Model 6 2 has been used in hundreds of successful IES recoveries However the following details must be adhered to without exception otherwise omitting a small detail could result in the IES never releasing from the sea floor e only URI GSO replacement parts see Appendix D 1 for part numbers e follow PRECISELY the release block assembly instructions in Appendix D 2 7 6 INVERTED ECHO SOUNDER MODEL 6 2 7 4 PRESSURE amp VACUUM PORTS Both the pressure port and the vacuum port are made from titanium alloy to minimize corrosion The internal plumbing that connects the pressure port to the pressure sensor has been tested to 10 000 psia 6 9 10 kPa for 48 hours to assure safe deployments to full ocean depths If the pressure
79. a lithium cell is ten years however a conservative 20 safety margin should be added to the above system battery calculations to make up for any optimism in the battery manufacturer s specification low temperature operations and for long communications sessions e g repeated setup sessions final testing and data offloading Communications uses up about 0 045Amp hr hr e Ifthe system battery becomes exhausted during the experiment it is not catastrophic the CF 1 computer will sense that the battery is getting low and gracefully shut down the data acquisition circuits The release battery will then take care of routine recovery operations however after the system battery shuts down the auto release timer is no longer active 3 3 1 Replacing the Batteries The number of cells required on a battery board is dependent on the mission energy requirements as outlined in the previous section However after the system battery capacity is determined the position of the cells on the battery board is important in order to properly ballast the IES so that the acoustic transducer is vertical during deployment Cells should be loaded such that the battery board center of gravity remains in the middle of the board with a little examination of the diagram on the board and the circuits outline in Chapter 6 you ll see that this is possible for system battery top of board capacities of 90 120 150 180 and 240 Ampere hours The release battery bot
80. and launching use the recovery line as a control line to prevent the IES from swinging and twisting CHAPTER 9 MAINTENANCE 9 1 Chapter9 MAINTENANCE 9 1 PRESSURE SENSOR If the IES is equipped with the pressure measurement option the plastic pressure fitting oil reservoir projecting from the titanium pressure opening in the glass sphere must be cleaned and the oil supply in the sensor plumbing must be replenished after every deployment Following the simple procedures detailed below can prevent marine organisms and or silt from blocking the sensor port and sea water reaching the internal metal parts WARNING Do not remove the threaded titanium fitting pressure port from the glass sphere or allow it to rotate The sphere and the sensor plumbing must be pressure tested if the titanium fitting is disturbed 9 1 1 Cleaning amp Filling the Pressure Port Use a 7 16 12mm wrench to remove the plastic oil reservoir fitting from the pressure port do not remove the threaded titanium fitting or allow it to rotate hold it with a 7 8 23mm wrench Thoroughly empty and clean the fitting and port entrance with a cotton swab to remove any sea water silt or marine growth Next refill the port entrance with oil by using a hypodermic syringe to inject Dow Corning fluid 350 CS into the pressure port until the fluid is in a puddle on the top of the port level with the sphere s surface After adding the fluid poke the syringe into the port
81. ard The user cannot choose file names There will be only one system log file on the memory card Itis a record of the activities of the system since the file was created and is named IES log where is the instrument serial number assigned by URI GSO Regardless of the number of restarts and RESETs there will be only one system log file The number of data files will depend on the number of times the mission configuration has been modified A new edition of each type of data file as outlined above will be created whenever a new mission configuration has been saved i e after the user has restarted the IES via the menu mode To restart the IES without creating a new set of data files simply RESET the instrument without accessing the menus or RESET while in menu mode without saving the configuration Data files are named E _XX dat T _XX dat P _XX dat and F _XX dat for Engineering Travel Times Pressure amp Temperature and raw Pressure amp Temperature data respectively where is 3 digit IES serial number e g 076 and XX is a sequential index number from 1 to 32768 The data file names will be indexed to indicate the sequence in which the instrument was restarted after a mission configuration was saved For example if 076 is the IES serial number e The first since the last card erasure travel time data file will be named T076_1 dat e If the system is stopped and the user saves another mission configuration a new
82. assembly process 1 2 Start with the upper hat section on the floor resting on the acoustic transducer guard Lift the IES sphere assembly by the rubber lifting handle transducer pointing down and lower it into the hard hat rotate the IES until the yellow arrow label on the edge of the hard hat is aligned with the yellow arrow on the glass hemisphere See Figure 7 2 Place the lower hard hat over the sphere rotating it to align the green arrow labels on the inside edges of the hard hats As you are placing the lower hard hat pull all the connectors on the IES external cable through the hole in the hat beside the release block Be careful not to disturb the plastic fitting on the sphere pressure port Install the nylon bolts and nuts that clamp the two plastic hard hats together install the nylon flag holder hardware Use nylon washers on both sides when bolting the two hard hats together Install the release block as shown in Figure 7 3 Orient the release block so that the anode cathode connectors are nearest the hole in the hard hat assembly Apply a small amount of o ring grease to the mating surfaces of cable and connectors Plug in the release block cables and the yellow RS 232 communications cable sealing plug When you are ready to turn the IES ON grease the red ON FF plug and install it When the red plug is installed the IES will turn ON and acoustically respond as outlined in Chapter 2 2 2 TAPE EX
83. ata transfer takes place at the end of every day and when the IES senses that the RELEASE relay has been activated It is included here to allow the user to move data from RAM to the memory card after IES testing in the laboratory There are important details about this process in Chapter 4 2 3 INVERTED ECHO SOUNDER MODEL 6 2 THIS PAGE INTENTIONALLY LEFT BLANK CHAPTER 3 ADVANCED PLANNING amp PREDEPLOYMENT CHECKS 3 1 Chapter 3 ADVANCE PLANNING amp PREDEPLOYMENT TESTING This chapter will provide instructions on how to e determine the specific mission requirements e test the IES before deployment 3 1 ADVANCED PLANNING Advanced planning involves the IES user answering the following questions e how often do I need IES travel time measurements do I need a pressure measurement at the site how often how long do I want to deploy this IES what is the water depth at the deployment site any special precautions at the site high currents fishing activity unusual topography etc e what date and time shall I set the auto release The implications of the various answers to these questions are addressed in this section Discussions on the choices of travel time measurement schedule pressure measurement schedule battery pack capacity and loading output power lockout time special mooring requirements auto release date and hour For the general planning of an IES deployment the following time chart shows what needs to
84. ation test be sure that the IES is properly configured as follows e sealed in its glass sphere at a stable temperature for more than 6 hours is correctly oriented with the acoustic transducer facing UP the correct pressure and temperature offsets are installed see Chapter 3 5 no air in the pressure plumbing system the dead weight tester must be at the same height as the pressure sensor or a hydrostatic offset must be introduced Attach the external communications cable to the IES and go to the IES Self Test Menu Use selection D to acquire pressure measurements The IES reported pressure should indicate within 0 015 of full scale the known pressure applied to the sensor by the dead weight tester Apply pressures over the full scale range being careful not to exceed the full scale value If the pressure data reported in the record are in error contact Paroscientific Inc for information on re calibrating the pressure sensor at the factory Contact information is available from their web site www paroscientific com URI GSO does not maintain a re calibration facility 9 2 INSTRUMENT HOUSING Although there is little that can render the hardhats unusable it is a good idea to look over each of the parts prior to a deployment The hardhats are extremely flexible and should not crack It will be obvious when a glass sphere is no longer fit for deployment However a small amount of chipping or spalling may occur around the inner edges of t
85. be done when and where to find relevant information See Chapter 3 3 6 1 7 3 7 4 9 4 Time Operation 4 months before order batteries amp expendable parts 3 months before check condition of IES mechanical parts 789 2 months before pre stress the pressure sensor 1 6 1 4 weeks before preliminary electronics tests with test battery 2 amp 3 2 weeks before load new batteries amp de passivate battery pack 3 configure the mission final test at 25 C 2 1 2 weeks Vacuum seal the IES housing 7 2 day IES test with echo simulator 09 Test Accessories Guide test ACS subsystem 0 C 5 test RELOC module 0 C 8 2 3 hour before set the IES clock clear memory card 2 4 2 5 fill out Deployment Form Appendix E attach anchor amp flag 8 check the vacuum indicator 7 amp 8 at deployment test for false release Test Accessories Guide record position and time Appendix E 3 2 INVERTED ECHO SOUNDER MODEL 6 2 3 2 SELF TEST MENU The following describes the functions available from the IES Model 6 2 Self Test Menu amp IES HyperTerminal File Edit View Call Transfer Help TES Self Test Menu Ping Test 18 pings at programmed output level 4 sec rate gt Travel Time Test a single TT measurement Precision frequency reference test measure CFi pin 35 Pressure sensor test a single P amp T measurement pair Output Power Test accurate with ITC 3431B transducer only memory card
86. ble at cmari com o TRAX4 converter module available at cmari com 0000000 11 2 INVERTED ECHO SOUNDER MODEL 6 2 11 1 2 Shipboard Equipment Setup part of cruise preparations 1 Assuming an MS Windows platform create your project and data folders For example if you name your project NEGoMex2005 you would create the folders c NEGoMex2005 telemetry data 2 Copy all of the Matlab m files listed above into the folder telemetry 3 In Matlab701 toolbox local edit startup m so Matlab exe will go to your project path when it is started for our example project NEGoMex2005 you would add the following to startup m 4 With the Matlab editor go to the bottom of the receiver files PPDTb m amp CPDTb m and change the project name in the paths of the various data destinations 5 Depending on the depth of the work area change the default GAIN value see the top of the receiver files Use the following rule of thumb GAIN DEPTH 1 2 1 2 km 2 3 2 3 km 3 4 3 4 km 4 5 gt 4km Note This is just the default GAIN it can be changed at startup and during operations 6 With the Matlab editor go to the display files PPlotPDT m amp CPlotPDT m and change the project name in the path of the data source Note Both of these programs use TelemPlot m and Telem_plot m which do not require any data path modifications 7 With the Matlab editor go to the telemetry utilities RenamePDT m and DeletePDT m and change the pro
87. ceive the release command Telemetry Enable TELEM This command sets the IES data acquisition subsystem in the pulse delay telemetry PDT telemetry mode When the command is accepted the system will reply with two 12 0 kHz pulses two seconds apart After the next measurement burst is complete the IES will begin transmission of either burst telemetry or file telemetry depending on how long it has been since the mission was started The many important details of this operation are outlined in Chapter 10 The PDT telemetry is used to verify the proper functioning of the IES measurement circuits and to collect data in lieu of recovering the IES The system will remain in this mode until disabled by the CLEAR command see below the file telemetry is complete or a reset While in the TELEM mode the system can receive the release command CLEAR Disable Transpond amp Telemetry This command will disable the Transpond and Telemetry modes if either is enabled In fact any command if properly framed bits 1 amp 11 are 1 s bits 10 amp 20 are 0 s will act as a disable command When the command is accepted the system will reply with two 12 0 kHz pulses 2 seconds apart It is important to remember that the Transpond and Telemetry modes cannot be enabled simultaneously since the reception of either command disables the other If either of these commands is enabled at midnight according to the IES clock it will be disabled Beacon Enable
88. ckwise from North Example TEL 1999 12 20 14 40 43 039 375 00 234 3 3768 2532675 235 3 3768 2532675 236 3 3769 2532676 237 3 3769 2532676 238 3 3770 2532677 3 239 3 3770 2532677 Telemetry File Notes gt The time that should be assigned to a pair of data values is 12 00 00 of the specified year day The time interval is one day gt Before the detiding processing can begin the IES must collect 72 hourly mean values for travel time and pressure The IES will run the detide program at the end midnight of every day beginning after the 72 hour data buffer has been filled In other words it will not start processing data for the telemetry until the fourth midnight by the IES clock of the mission the first partial day s data will not be processed The telemetry file with the TEL meta data record will be created at the start of the mission but there will be no processed data until the fourth midnight gt Only one meta data record is written to the telemetry file Each time a new mission starts the 72 hour buffer is cleared and must be refilled hence restarts will cause a 3 day gap in the time stamp gt The acoustic telemetry process will read the file backwards LIFO last in first out and the first record 375 0 0 will provide a flag to the receiver that the end of the file has been reached Note See Chapter 10 amp 11 for a complete description of the acoustic telemetry feature and additional information on telemetry files
89. commands are encoded on an individual IES the corresponding equivalents must be entered into the deck box sending unit as shown in Table 5 2 see the following sections for examples of setting up either type of deck box EdgeTech or Benthos TELEM CODE EdgTech 8011A code Benthos DS 7000 URI code 0 1 1000 0100 0 1 0100 0100 0 64 1 1 1100 0100 0 1 0010 0100 0 65 2 1 1010 01000 1 0110 0100 0 66 3 1 1110 0100 0 1 0001 0100 0 67 XPND CODE 0 1 1000 1000 0 1 0100 1000 0 68 1 1 1100 1000 0 1 0010 1000 0 69 2 1 1010 1000 0 1 0110 1000 0 70 3 1 1110 1000 0 1 0001 1000 0 71 BEACON CODE 0 1 1000 0000 0 1 0100 0000 0 72 1 1 1100 0000 0 1 0010 0000 0 73 2 1 1010 0000 0 1 0110 0000 0 74 3 1 1110 0000 0 1 0001 0000 0 75 CLEAR CODE 1 0000 00000 1 1111 11110 76 VALID FOR ALL IESs Figure 5 2 Deck box settings for various IES commands continued on next page CHAPTER 5 ACOUSTIC COMMAND SUBSYSTEM ACS RELEASE CODES 0 00 10 tA EdgeTech 8011A codes 1 0000 1100 0 1 1000 1100 0 1 0100 1100 0 1 1100 1100 0 1 0010 1100 0 1 1010 1100 0 10110 11000 1 1110 11000 1 0001 1100 0 1 1001 1100 0 10101 1100 0 1 1101 11000 10011 1100 0 1 1011 11000 10111 11000 1 1111 11000 1 0000 0010 0 1 1000 0010 0 1 0100 0010 0 1 1100 0010 0 10010 00100 1 1010 00100 10110 0010 0 1 1110 00100 1 0001 0010 0 1 1001 0010 0 1 0101 0010 0 1 1101 00100 1 0011 0010 0 1 1011 00100 10111 00100 1 1111 00100 1 0000 1010 0 1 1000 1010 0 1 0100 1010 0 1 1100 10100
90. cquisition mode If a computer is attached to the IES the operating configuration parameters and the IES clock setting will be displayed on the terminal where it can be captured for the record If a PC is not attached and the two ping signal is not heard attach the communications cable and a PC with Hyperterminal running and repeat the RESET Monitor the messages displayed on the PC to diagnose the problem CHAPTER 2_GETTING STARTED CONFIGURING THE IES Power ON or RESET ye CF1 configure O lines get the last mission x saved enable clear the release relay create an ies_ log file if none exists and write a RESET record Y 1st O K ping keystroke input loop for 5 seconds check ui amp currents calculate mission memory requirement check capacity of flash card all systems report GO error display mission configuration amp data two pings 0 3 seconds apart any engineering files exist create a new set of data files if enabled T _xx dat P _xx dat E _xx dat F xx dat write Lu records in all three data files clear the b ne RAM write an OPERATE record Y enable amp reset the watchdog 11 min disable watchdog MENUS GO display latest mission configuration amp engineering data save configuration and start mission check amp currents calculate mission memory requirement Y
91. d as well as the number of free bytes available on the card B Read a file displays the directory as above and prompts the user for the name of a file to be read When the file name is entered the file contents will be displayed This is the equivalent of the MS DOS TYPE command C Transfer data files to computer using Hyperterminal displays the directory as above and prompts the user to enter the index of the data set to be transferred to a computer directory When a data set index is entered the display will list the available files and prompt the user to continue If the user enters Y the IES will respond by displaying the filenames and message sending filenames The user must then click the right mouse button and select receive file When the Hyperterminal file transfer window opens enter the destination directory and select Y MODEM as the transfer protocol Click OK and monitor the status window for any transfer errors E Erase ALL files format the memory card erases ALL files on the memory card There is no recycle bin when this operation is performed all data will be irretrievably lost The user will be warned and asked to approve the operation To approve the operation the user must enter an uppercase Y F Save RAM data to memory card for testing only transfers the data in volatile RAM buffers to non volatile memory card data files During routine operations this d
92. d issues dictate a pause in telemetry operations In any case a provision has been implemented to pause a telemetry session save for 24 hours only the position in the data file and restart the transmission from the saved position This works as follows 1 Once file telemetry has been initiated the data transfer will pause periodically as outlined in previous sections to allow the operator to stop the transmissions send the CLEAR command If the telemetry session is stopped the file pointer will be saved for 24 hours from the start of the initial transmission If the TELEM command is re sent within the 24 hour period the data transfer will continue from the saved file position If the entire data file is transmitted the file pointer will be reset to the end of the file and the 24 hour timer will be cleared The next TELEM command will initiate a new session If a session is paused multiple times file pointers will be saved only during the 24 hours from start of the session After 24 hours any subsequent TELEM command will initiate a new session with the file pointer at the latest data In other words the 24 hour timer does not get restarted with each TELEM command 10 11 2 Telemetry Session Interrupt Pause 2330 hours for 15 30 minutes This feature is outlined in a section above 10 12 INVERTED ECHO SOUNDER MODEL 6 2 10 11 3 Telemetry After Failed Release In standard operations acoustic telemetry file data transfers will
93. e 2 ping acknowledgment will acoustically disable TELEM mode If you forget to disable the TELEM mode before leaving the deployment site the IES will disable the function at midnight IES time CHAPTER 8 SEA OPERATIONS IMPORTANT DETAILS 8 5 8 2 RECOVERY The IES is a small package that gets left in a big ocean Besides the obvious tools used to relocate and recover an IES e g reliable shipboard navigation and acoustic systems as well as diligent record keeping a number of relocation and recovery aids are built into the instrument This section of the manual outlines the use of these devices during recovery operations refer to other sections of the manual for descriptions of the devices A summary of IES relocation and recovery aids e Acoustic Command Subsystem ACS Burn wire release mechanism VHF radio beacon and xenon flasher module RELOC Module e flag and reflective tape e floating recovery line 8 2 1 Acoustic Commands After arriving at the deployment site Listen for the IES travel time measurement pings and determine the IES clock offset remember that the ACS responses will be blocked during travel time measurements so note how the clock error will affect the IES measurement schedule and the ACS operations Remember also that there is a short time delay resulting from the sound propagation time through the water Send the XPND command and determine the slant range to the IES if it is much greater t
94. e Hyperterminal and the YMODEM transfer protocol here e When RESET or turned ON the IES responds as follows a single ping followed 15 30sec by a double ping if there is no double ping attach a computer with Hyperterminal RESET power cycle OFF ON again and check the error messages Without a computer attached the double ping is the best indication that the mission has started properly CHAPTER 4 DATA RECOVERY amp ANALYSIS 4 1 Chapter 4 DATA RECOVERY amp ANALYSIS 4 1 DATA OFFLOAD TECHNIQUES Typically data from a specific mission will be retrieved from the IES memory card as a set of 4 files 3 data files with a matching file index a T file a P file an E file and a system log file The system log file captures the system activities during the collection of all data file sets on the memory card It is easy to select that portion of the system log that applies to the data file set T P amp E files of interest The details follow Note Telemetry and current meter files do not have a file index There are two methods of retrieving data from the IES Model 6 2 instrument open and instrument closed with the second method requiring the standard RS 232 communications cable provided with the instrument The two techniques are outlined IES open When the instrument is open the easiest way to retrieve data is to shut the TES OFF and remove the compact flash memory card insert it into the PCMCIA port adapter provided wit
95. e YMODEM data send mode user must then click the right mouse button and select Receive File A window will open that allows the user to select the destination directory and the transfer protocol select YMODEM The transfer will start and the Hyperterminal window will display the status of the transfer and report any errors The baud rate for the transfer remains at 9600 however with error checking overhead the effective throughput is about 9220 bytes sec it will take about hour to offload a year deployment 3 6Mbytes without current meter data 4 2 MEMORY CARD FILE MANAGEMENT The IES Model 6 2 data acquisition system stores information on a type Compact Flash memory card This non volatile device can be removed from the IES and with the adapter supplied with the IES shipment inserted into any IBM compatible computer PC equipped with a PCMCIA port The memory card then appears as a disk drive and the IES data as MS DOS formatted files The data are stored as ASCII text in a form array matrix ingestible by Matlab or other data processing tools A detailed description of the IES Model 6 2 files and record formats follows An external drive for compact flash cards is available from MicroTech called ZiO It costs about 40 US and operates with computers running Windows with USB port support This inexpensive device is more convenient than the PCMCIA card adapter See www microtechint com for more details 4 2 I
96. e four types of commands and the number of code combinations for each are TELEM JP4 4 different codes XPND JP3 4 different codes BEACON JP2 4 different codes and RELEASE 64 different codes The selection and changing of acoustic command codes is outlined in Chapter 5 RESET This push button will RESET the Persistor computer module and restart the IES program A flow chart of the restart process is shown in Figure 2 3 data collected since the start of that day will be lost unless they have been previously saved by a data buffer flush operation see Chapter 2 5 F CHAPTER 2_GETTING STARTED CONFIGURING THE IES 2 3 2 2 COMMUNICATIONS Two custom RS 232 communications cables are provided with each Model 6 2 IES one for direct communications when the glass housing is open part 54 11 and one for use when the sphere is sealed part 51 06 The IES RS 232 protocol is fixed at 9600 baud 8 data 1 stop bit no parity Any terminal emulation software capable of the above RS 232 protocol can be used to set up the IES however it is handy to have a capture feature to document testing and a reliable data file transfer protocol YMODEM to upload data files through the external cable These software utilities are provided on the IES User s Disk An CD disk labeled IES User s Disk is provided with each Model 6 2 IES and contains two directories Hyperterminal and MotoCross Hyperterminal exe is used to c
97. e oscillator during the time between the rising edges of the pressure sensor signal A similar technique is used to simultaneously measure the temperature signal from the Digiquartz sensor The two period measurements pressure and temperature are then used along with the specific sensor calibration coefficients provide by Paroscientific to calculate the pressure in physical units The PIES 4 0MHz frequency reference circuit used as outlined above in the PIES pressure and temperature measurements employs an ultra stable crystal manufactured by Bliley Electric Inc The aging drift of this device is 1x10 day after 30 days operation The specified accuracy of the reference oscillator is Sppm re 4 0MHz but is corrected for temperature by the PIES using the uncorrected temperature measurement from the Paros temperature sensor In other words the approximate temperature from the Paros sensor is first used to correct the reference oscillator output and then the corrected reference is used to determine the temperature and pressure measurements After these corrections for temperature the accuracy of the PIES pressure measurement remains within the 0 01 FS sensor specification stated by Paroscientific Inc URI GSO has empirically determined that an order of magnitude reduction in the long term drift characteristic of the Paroscientific DigiQuartz pressure sensor can be realized if the sensor is pre stressed 1 e hold the sensor at the a
98. ection echo time resolution measurement noise acoustic telemetry Pressure optional 24 pings hour in programmable bursts of 4 8 12 or 24 pings each alternating 16 amp 18 seconds to avoid aliasing by surface waves 6 millisecond 12 0 kHz for reception on standard shipboard depth recorders 500 to 6700 meters custom transducer with conical radiation beam 150Hz centered at 12kHz adjusted under firmware control for depth 170 197 dB re luPa multi stage hard limiting receiver followed by broad amp narrow band filters 150 Hz bandwidth 0 01 millisecond each ping std deviation of 24 ping median typically lt 0 5 ms in 4500 m deployment 25 kt wind lt 1 5ms in rain pulse delay telemetry PDT of average travel time after each measurement burst sensor FS range standard FS range options freq counter time base resolution absolute accuracy drift temperature compensation Temperature optional Paroscientific Digiquartz model 410K optionally 46K 42K 10000psi 6000dbar 6000psi 4000dbar or 2000psi 1300dbar added to PIES with compatible accuracy low drift and temperature calibration 0 001 dbar 1mm H O for 4000 dbar sensor 1 part in 64x10 0 01 FS 4 ppm month coefficients provided with each sensor sensor FS range resolution Current Speed amp Direction optional see Manual Section 12 2 Paroscientific Digiquartz temperature included in Pressure option
99. ed use this integer number with the time stamp to match a specific set of data files to a time frame mission statement a single and separate line of text 80 characters max entered by the user as a note to the data analyst REL This record will contain the release time stamp It will be appended to the system log file when the acoustic or auto release function is detected Besides the time stamp a reserved field always zero the number of pressure and temperature count corrections and the number of clock corrections during the mission is recorded MISSION ABORTED Once per day at the end of the day s data collection activities the CF1 computer module checks to see if the IES battery voltage is too low or the system current is too high to support further activities In either case if a problem is detected this message is written to the system log file subsequent data collection activities are suspended and the system will enter a low power state The error message will indicate whether low voltage or high current is the problem This activity does not affect the acoustic command system the IES will still be listening waiting for acoustic commands However the auto release function will no longer be enabled Example OPR 1999 12 20 14 40 43 002 77523 10 10 1 20 0 Okinawa Frontier Project Alpha Site B3 depth 2350 m RES 1999 12 20 18 42 40 0 RES 1999 12 21 10 26 05 0 REL 1999 12 27 09 00 13 0 0 5 RES 1999 12 27 09 01
100. el 6 2 17 Lithium battery pack The battery cells are mounted on a reusable circuit board and are divided into two independent sections the lower section is for the acoustic command subsystem referred to as the release battery and the upper section is for the IES data acquisition subsystem referred to as the system battery see Figure 1 1 Note Cells B23 amp B24 are on the lower section and are part of the system battery The board is configured for size DD lithium cells with tab or pigtail terminals and open circuit voltage 3 6Volt If the full complement of batteries is not needed be sure to load the cells in such a way that the spatial symmetry of the pack is maintained i e balanced around the center otherwise the IES may sit at an angle during deployment The board is designed to accommodate symmetric packs of 120 180 and 240 Ampere hours for the system battery the release battery will always have 8 cells in a symmetric arrangement As the diagram shows parallel diodes on each release battery cell prevent an individual cell failure from influencing the entire stack other than lowering the voltage by 3 6V The IES Lithium cells unlike carbon or alkaline cells maintain their open circuit voltage 3 4 3 6 Volts until near end of life so it is not possible to determine the energy remaining in a cell with a voltage measurement Use the chart in Chapter 3 3 to estimate how long a battery will last NOTE In ca
101. er to these figures during the following discussion 10 1 PDT Telemetry Technique The idea of sending information by encoding data as the delay in arrival time between two acoustic pulses has been used for years The method has had a number of names it is referred to here as pulse delay telemetry PDT The primary feature of PDT that makes it attractive relative to other encoding techniques e g bit rate FSK or spread spectrum encoding is its very low power requirement and high reliability The primary drawback relative to the other techniques mentioned is its low speed or data throughput With its adjustable resolution PDT is inherently reliable just slow it down until it works and when using multiple frequencies the technique is relatively immune to multipath acoustic interference In the IES application the low data rate issue is solved by preprocessing the data in situ to produce mean values for a 24 hour calendar day Hence depending on whether the application is a PIES or C PIES configuration a block of data representing a full day s measurements year day tau pressure current speed and heading can be transferred from the sea floor to a surface ship in 24 or 30 seconds respectively 10 2 INVERTED ECHO SOUNDER MODEL 6 2 Note The following text describes the telemetry protocol for C PIES configuration data includes tau pressure current speed amp heading The protocol for PIES configuration data includes tau
102. et the output driver switch S1 to XMT see Figure 2 1 Set the ON OFF power override switch 52 to REMOTE see Figure 2 1 Clean the glass sealing surfaces on both hemispheres as described in Chapter 7 1 While one person holds the other hemisphere rim downward above the first hemisphere a second person plugs the pressure sensor cable into J6 of the IES board the external cable into J3 of the IES board Close the hemispheres and align their outside edges Rotate the top hemisphere to align the yellow arrows and serial numbers of the glass Open and examine with a magnifier the vacuum port Clean the port and sealing screw Replace the o ring if necessary using a little o ring lubricant see Section 7 1 Using a vacuum pump and clean rubber hose evacuate the air from the sphere to 20 50cm Hg vacuum and quickly replace the port sealing screw see Section 7 2 Confirm a good seal by trying to slide the hemispheres apart they should not move See Warning below Wrap the soft sealing goop tape around the equator joint of the sphere overlapping the ends 0 25 0 6cm Before removing the backing paper from the tape flatten the soft tape with a roller to half of its original thickness Wrap two layers of the 2 5cm wide plastic tape over the soft tape Smooth out any trapped air bubbles Install the plastic belt and rubber handles at right angles to the equator joint as shown in figure 7 1 note the position of the lifti
103. ew set of coefficients must be loaded C Enable disable the pressure sensor raw data file The signals pressure and temperature output from the Paroscientific pressure sensor are frequency modulated square waves whose frequency is a function of the applied pressure and ambient temperature This menu Selection enables disables the saving of the frequency measurements in case there are any questions regarding the validity of the conversion to engineering units process applied by the IES The format of the raw data file is identical to the converted data file except that the units are in milliHertz The IES computer will attempt to remove any wild points from the pressure and temperature converted data but will include these wild points in the raw data file CHAPTER 2_GETTING STARTED CONFIGURING THE IES 2 _11 2 3 5 IES Memory Card Menu From the IES Main Menu select B to enter the Memory Card Menu Your display should look similar to the following JES HyperTerminal File Edit View Call Transfer Help 39090000000000000000000 TES Memory Card Operations Menu Display memory card data directory and capacity Read a data file Transfer data files to computer using Hyperterminal Erase ALL DATA FILES Save RAM data to memory card for testing only Return to Main Menu A Display memory card directory and capacity displays the name size and date of creation of each file on the memory car
104. for the subsequent data acquisition mission ONLY if the mission is started with the GO selection see below it will NOT be saved by the SAVE selection and will be lost if the IES is turned OFF prior to new data files being created see Chapter 4 2 S SAVE mission configuration will write all of the current operating parameters to non volatile memory If the IES is turned OFF after a SAVE any changes to the mission configuration will be saved and a new set of data files will be created when the IES is turned back ON Note It is o k but not recommended that you start a mission this way There is no configuration review You should carefully review all of the operating parameters prior to starting a mission see the GO selection below G GO review configuration and START data collection displays the entire mission setup and prompts the user for approval to start the data acquisition mission If after review further modifications are required the user can return to the mission setup menu or continue to the final IES self test before starting the mission In the final self test the IES will measure battery voltages and currents make sure there is enough memory for the entire mission create a new set of data files on the memory card write the appropriate meta data records and start the data acquisition process At this point the user can disconnect the communications cable from the IES or continue to monitor the operations the
105. for time after the IES was released In other words the first and last data records in any data file will probably have zeros filling some of their fields As stated above the time stamp in a data record represents the number of hours elapsed since 1970 1 1 00 00 00 the first hour of day 1970 1 1 is hour zero The data in that record are collected some time during the hour indicated Hence in the case of travel time and pressure temperature data whose measurements are spread over the hour the actual time of a measurement could be as much as 50 minutes after the time stamp in accord with the measurement schedule documented for the mission in the meta data header record The meta data header record the first record in every data file contains the information start time and measurements per hour rate used to determine precisely when each measurement was taken 4 3 RECORD TYPES amp FORMATS In the following outlines indicates the IES serial number and XX indicates the file index Fields are delimited by ASCII spaces and all data are in physical units seconds degrees etc as indicated in the definition of terms Each record begins with a line feed character and ends with a carriage return CHAPTER 4 DATA RECOVERY amp ANALYSIS 4 5 4 3 1 System Log File In the IES system log file IES log you will find these record formats RES yyyy mm dd hh mm ss reset type OPR yyyy mm dd hh mm ss IES s n Paros s n TTint
106. fy coefficients enter N until you reach Tzero Add Tdif to the Tzero value and then continue through the coefficient menu until you return to the Mission Setup Menu 4 Repeat the single measurement from the Self Test Menu selection D to verify that an accurate temperature is now reported Ne The Paroscientific Digiquartz pressure sensor measurement is accurate to 01 of full scale assuming that the sensor is mounted vertically with the oil filled tube at the top In the PIES the sensor is mounted horizontally which introduces a small error Paroscientific Inc has assured URI GSO that the orientation error is a fixed offset that can be corrected by measuring a known pressure with the IES and entering a pressure offset value Pzero to make the IES measured value equal the true value To determine the size of this error locate the sealed up instrument in an area where the barometric pressure is known Follow the four steps in the previous paragraph substituting pressure for temperature and Pdif Pzero for Tzero After you have confirmed that the temperature and pressure offsets you have entered result in the correct temperature and pressure measurement values return to the Mission Setup Menu and S SAVE mission configuration Note Since the temperature measurement is used to calculate the pressure be sure to modify the temperature offset first THEN check the pressure offse
107. ge as the channels are set up When the DS 7000 deck unit has completed initialization the Matlab workspace window will display Waiting for marker 10 0kHz in the Matlab command window The receiving program will remain at this point until the IES has finished its travel time measurement burst pressure measurement and begins to transmit this information via the burst telemetry scheme Observe the Matlab command window it should step through the detection of the four different receiver frequencies 10 0 11 5 12 0 12 5 10 5 and 13 0kHz and loop to the next record frame again waiting for a 10 0kHz marker pulse 10 6 10 INVERTED ECHO SOUNDER MODEL 6 2 The received data will be converted to year day travel time and pressure and saved in the c matlab telemetry data burst dat file The data will also be converted to depth and reported in the Matlab command window Evaluate the data received 1 is the proper depth reported The program converts the incoming data to sample depth from travel time depth from pressure and saves the raw travel times and pressure data in a file If the data look good given the known water depth send the CLEAR command with the DS 7000 You can now leave the site confident that the IES is working properly If the data are not valid try to evaluate whether the problem is in the acoustic link DS 7000 gain adjustment receiver hydrophone depth ship noise or if the IES itself is ma
108. h a proven track record The controller data logger Persistor CF1 computer module incorporates the simplicity and reliability of microprocessor control and solid state flash memory data storage plus improved time base data processing and telemetering capabitities features not available on earlier versions 1 1 INSTRUMENT FEATURES e Entrely self contained in a single non corroding glass sphere acoustic amp timed release flotation buoyancy and optional recovery aids radio or GPS beacon xenon flasher and flag e 32 bit microcontroller combines high performance data manipulation tidal signal filtering of VATT and pressure data with low power operation modes e data stored on removable type ATA compact flash memory cards 16 512Mbyte capacity data stored as engineering units in MS DOS file formats many self test features through the glass communications high speed data download without opening housing acoustic command subsystem including acoustic telemetry option acoustic command and data logging circuitry and batteries are independent 17 inch 43 cm diameter glass sphere instrument housing provides buoyancy for 120 to 240 Amp hr Lithium battery Typical deployment durations of 2 5 years depending on measurement schedule water depth output power sensors installed and battery capacity pressure temperature measurement as well as current speed direction options e long term stability and barotro
109. h each IES and install it into the PCMCIA port of your computer The data files are then available as MS DOS formatted files that can be copied edited etc On Microsoft Windows systems the PCMCIA port is a plug and play device so your computer should automatically recognize the memory card when it is plugged in and assign a drive letter to it Using Windows Explorer you can then examine and transfer the files to the hard disk directories of your choice Note never uplug the memory card from your computer without first disabling the PCMCIA port see your Windows User s Guide for instructions e IES closed When the IES is sealed up the data can be uploaded through the external RS 232 cable using the IES User Interface Menus and the IES utility program IES ht from your IES Users Disk Hyperterminal must be installed on your computer for this utility to run It is usually bundled with Microsoft Windows software in the c programfiles accessories communications directory Install IES ht and IES ico in the same directory Start from the Memory Card Operations Menu and select Transfer data files to computer using Hyperterminal The IES will display the current memory card files and prompt the user for the index of the files see Chapter 4 2 2 to be transferred Enter the index and press lt enter gt the IES will respond by displaying the available files and prompt the user to continue If you continue the IES will set itself up in th
110. han the water depth maneuver the ship until it is suitably near the IES Send the RELEASE command and verify the acceptance of the command by hearing the six pings at 2 second intervals The burn wire mechanism will take about 15 20 minutes to drop the anchor If there is only a two ping response check your records to be sure that you are sending the correct code Two ping responses mean that the IES ACS is working fine but is not recognizing the command as a release command double check your records and the code entered into the deck box Once the release command has been accepted and the burn wire release is activated the IES will start to ping at a 4 second rate with its maximum power output Monitoring the ship s line scan recorder you can see when the IES leaves the bottom The model 6 1 IES will rise at about 60 65 meters minute depends on the weight of batteries so knowing the water depth the time of arrival at the surface should be roughly predictable 8 2 2 Burn wire Release Mechanism In the deep ocean where the sea water temperature is about 0 5 C the burn wire release takes about 15 20 minutes to drop the IES anchor slightly faster where the water is warmer or more salty The IES must sense the current flowing in the burn wire before it begins its 4 second rate 12kHz beacon 8 6 INVERTED ECHO SOUNDER MODEL 6 2 8 2 3 RELOC Module When the IES releases from the sea floor it will invert and a tilt switch will turn ON
111. hat are scheduled An IES data collection day ends after the 23 50 00 data collection tasks are complete At that time all the data collected during the previous day currently residing in temporary RAM storage are written to the non volatile FLASH memory card and the previous 24 hours of travel time pressure and current data are processed see IES Data Processing for File Telemetry above and stored in the telem dat file along with the year day number corresponding to the center of the preceding 72 hour period The de tiding routines require three complete and contiguous calendar days of data to be collected before any data processing occurs Hence no processed data are stored in the telem dat file until four 23 50 hour marks have occurred 10 4 PDT Record Framing The time of arrival of the marker pulse 10 0 or 11 0kHz at the receiver is recorded and the differences between that time and the arrival times of the five following pulses 11 5 12 0 12 5 10 5 13 0kHz are scaled to represent five data values As depicted in the time line figures the five pulses representing the data values delayed from the marker must always fall within specified windows If they do not fall within these specified time windows the receiving software will reject them as invalid data points The five pulses representing data values relative to the marker pulse will never overlap in time The receiving software will start receiving a data record with the detection of the
112. hdog resets the IES the IES will in turn reset the acoustic command controller and release relay 1 the entire instrument gets reset If the IES system battery is exhausted the watchdog timer is no longer operative e Battery Independence amp Low Voltage Monitor The model 6 2 IES has two independent batteries system and release The IES is designed such that if the system battery is entirely exhausted the release battery will support all recovery features When the system battery falls below 6 0 volts the data acquisition system will save all data cease collecting further data and enter a low power sleep mode Alternatively if the release battery fails the system battery will operate the recovery functions although due to the lower voltage the burn time of the release mechanism will be as much as three times longer and the acoustic responses will be 12dB weaker If the system battery is exhausted the auto release function will no longer be operative 6 5 DYNAMIC CLOCK ADJUSTMENT The time base crystal oscillator of the IES real time clock RTC is integral to the IES s CF1 computer module CF1 is the computer engine that controls the IES data collecting schedule The CF1 time base has an unacceptable frequency tolerance 30 60ppm over the IES operating temperature range 0 25 C This can result in an IES clock drift of up to 5 seconds day or 30 minutes year correct this problem the IES periodically measure
113. he depth of the receiver transducer or move back to the deployment site After the 1 minute pause and before sending the next 27 records the IES will check to see if the TELEM command has been disabled by the CLEAR command If the TELEM command is still active file telemetry will continue where it left off repeating the MSB record first and the one minute pause every 27 records until the entire telem dat file is transmitted The IES will synchronize the beginning of each data block transmission with the start of the next minute of its clock this starts a new data block every 15 minutes re from the start of the first data block for CPIES configuration NOTE Telemetry for the corresponding PIES configuration proceeds the same way except takes less time A 34 day block of data gets transmitted 34 LSB I MSB x 24 secs 14 minutes and after the 1 minute pause synchronizes with the 15th minute 10 8 INVERTED ECHO SOUNDER MODEL 6 2 File Telemetry cont d If the entire telem dat file has been transmitted the acoustic command system is reset which clears the telemetry flag and the job is finished Once the TELEM command has been CLEARed by finishing the job or by a received CLEAR command the IES will return to its data acquisition schedule Any measurement bursts that would have been scheduled during the file telemetry operation do not take place and their travel time and pressure data values will be zero Note For subseque
114. he hemispheres in response to high pressure during testing or operation This is a normal stress relieving mechanism of the glass and has only minimal effect on its strength In general if the glass will hold a vacuum it will be safe from low pressure leaks if any chips along the seal do not extend more than 1 5 of the thickness of the seal the sphere should be safe to use to 4000 meters depth Of course if there are any doubts the safest procedure is to pressure test the sphere without the electronics 9 3 GLASS PENETRATORS Examine each cable connected to the glass penetrators for cracks cuts and deterioration of the neoprene rubber Replace any suspicious looking parts the consequence of a failure of the penetrators or attached wires is so severe it is not worth taking any chances It is normally not necessary to pressure test the sphere after changing a penetrator The integrity of the penetrator o ring seal is easily visible from inside the sphere For even greater peace of mind run a high voltage megohm test on the glass penetrators in a bucket of salt water Insert dummy plugs into the penetrator cables Immerse the outside of each hemisphere with penetrators amp cables in a tub of salt water and measure the resistance between an electrode in the water and the penetrator terminal inside the glass Since the penetrators on the pinger hemisphere carry such large voltages 2500 volts a high voltage megohmeter should be used At URI GS
115. ho Figure 12 3 C PIES DCS Setup Menu The DCS Sensor Setup Menu allows the user to gt Schedule current measurements offering the same options as the pressure sensor measurements 1 every 10 20 30 or 60 minutes The schedules for pressure and current can differ The DCS measurements can also be disabled gt Modify the DCS measurement parameters The IES transfers a set of operating parameters from a configuration file A cfg stored on the IES flash card to the non volatile memory of the DCS This file is composed at URI GSO and should not be modified by the user without contacting an applications engineer Warning There are many configuration options listed in the Aanderaa DCS 3900R Operating Manual that are NOT compatible with the IES application gt View Confirm the DCS measurement parameters The DCS measurement parameters stored in the sensor are retrieved and displayed 12 4 INVERTED ECHO SOUNDER MODEL 6 2 12 4 The DCS Configuration File As of this date July 2005 the DCS configuration file for IES Model 6 2 C PIES is named A3 cfg and reads as follows Set_Property_Averagebase 300 Set_Property_Current_Type Rectangular Set_Property_Compensation_Compass On Set_Property_Compensation_Tilt On Set_Property_Compensation_Upstream On Set_Property_Output_Comprehensive Set_Property_Output_Format Engineering Set_Property_Output_Polled Off Set_Property_Pingrate 1200 The above Set commands unless otherwise
116. in as shown secondary hole p O m Bend wire up sharply Insert cathode large wire at 90 deg into plug holder until flush with edge ES N 1 2 213 14 AN CN N 4 Mount pin holder to plug holder with nylon 10 24 x 1 2 hardware including stainless steel links Insert screw nylon on right side only Wrap wire around screw 90 deg Insert second screw on left side Wrap wire around screw 180 deg and trim to length Tighten both screws Sheet 3 of 4 gfc 11 17 03 PN 56 146 Cathode PN 50 01 Anode PN 50 02 Pin Holder PN 50 01 E Plug holder PN 50 02 eo Ls DUM Pre Deployment Checklist Connectors are flush with surface Cathode wire clearly obstructs pin movement No damage to exposed connectors 1 2 3 All wiring bends are sharp 4 5 See note 5 Release 50 05 There MUST 1 8 1 32 movement between the cathode wire and the release pin The pin holder will compress 1 8 at full deployment depth 10 000 psia potentially jamming the pin which would prevent the instrument from returing to the surface Sheet 4 of 4 gfc 11 17 03 PN 56 14c E 1 IES Deployment Form E 2 IES Recovery Form THIS PAGE INTENTIONALLY LEFT BLANK
117. inimize abrasion e Add security to all knots in the anchor line with plastic cable ties No Yes Figure 8 1 Using Salvaged Chain as an Anchor Attaching the Anchor Line CHAPTER 8 SEA OPERATIONS IMPORTANT DETAILS 8 3 8 1 3 Acoustic Tracking Operations This section describes the use of the Acoustic Command Subsystem ACS during deployment operations Descriptions of the ACS subsystem and the commands themselves are provided in Chapter 5 It is assumed here that the user understands the setup and the functions of ACS commands as described in Chapter 5 and that some type of acoustic tracking system receiver amp line scan recorder is available on the ship Using the ACS there are two methods of determining the location of an IES on the sea floor e Sending the XPND transpond command will initiate the IES transpond mode In this mode the IES will immediately reply with a 12 0kHz ping whenever it detects a 12 5kHz interrogation ping from the ship Using an EdgTech model 8011A or Benthos model DS 7000 deck box in the ranging mode the slant range from ship to IES can be determined but not bearing If the ship is equipped with a hull mounted transducer that can transmit the 12 5kHz interrogation pings the operator can maneuver the ship while continually updating the slant range bearing can then easily be determined Alternatively if a lowered hydrophone is used a minimum of three slant ranges should be measured each from
118. inverted Echo Sounder Users Manual IES Model 6 2 ee Un School of Oceanography 215 South Ferry Ro ad Narragansett RI USA 02882 Revised October 2005 Table of Contents Chapter 1 TES Model 6 2 OVERVIEW 1 1 1 1 INSTRUMENT FEATURES 00004 1 1 1 2 OPTIONAL MODIFICATIONS 1 2 1 3 STANDARD ACCESSORIES 0 02 1 2 1 4 REFURBISHING KITS AND SPARE PARTS 1 2 1 5 TES Model 6 2 SPECIFICATIONS 201 1 3 1 6 TRAVEL TIME MEASUREMENTS 1 4 1 7 PRESSURE and TEMPERATURE MEASUREMENT 1 5 1 7 1 PIES Measurement Technique 1 5 1 8 IES PARTS LOCATION DIAGRAM 12 1 6 Chapter 2 GETTING STARTED CONFIGURING THE IES 2 1 2 1 INTERNAL SWITCHES amp CONNECTORS 2 2 2 2 COMMUNICATIONS AEE RES EE ER dined OPEM 2 3 2 2 1 Communications 02 2 3 2 22 RESET Sequence wa ae Ses ER ee Da 2 4 2 3 USER INTERFACE MENU MODE 42 2 2 0 221 2 6 2 34 One Minute Warning FU va LES ER
119. is property is OFF the DCS will ping its transducers a predetermined pattern TR1 gt TR2 gt TR3 gt TR4 gt TRI etc CHAPTER 12 Aanderaa Acoustic Doppler Current Sensor Option 12 5 12 6 The DCS Configuration File cont d 12 6 6 Set_Property_Output_Comprehensive The output will include the following when the DCS has this property set Current speed and direction Water temperature Signal strength Compass Tilt Ping count VVVVVV 12 6 7 Set Property Output Format Engineering Specifies the output converted to engineering units e g cm sec as opposed to raw data values 12 6 8 Set Property Output Polled Off Sets whether the DCS results must be polled requested or automatically output when available In non polled mode the DCS will collect as many pings as the averagebase is set to When the ping sets are collected the DCS will calculate and output the current values While calculating and outputting the result the DCS will halt the ping generator This means the DCS will halt for about 1 second each time it outputs data 12 6 9 Set Property Pingrate 1200 Sets the ping rate in pings minute If Pingrate 0 the ping is manual i e must use the Ping command The ping rate can be between 4 and 1200 pings per minute The ping rate has a resolution of 250useconds The current drain on the battery is a function of ping rate as follows Current drain 5mA x ping rate pings sec Thus for pingrate 1
120. is test charges the output capacitor C57 to the programmed output level reports the voltage at the capacitor before and after a single ping then calculates the power delivered to the output circuit based on this voltage difference To be accurate this test should be done with the ITC 3431B transducer in water especially at high output levels A wide range of acceptable test values are displayed that indicate the variability of the transducer when driven in air H Check memory card sectors checks each sector of the memory card to determine the integrity of the write read process Any defective sectors will be reported Any errors here indicate the memory card should be replaced J View Engineering Data reports the current values of the battery voltages system currents and the internal temperature Acceptable ranges are indicated K Release Relay Test activates the release relay and the radio flasher RELOC module if attached for 30 seconds The release indicator red LED on the circuit board see Figure 2 1 will light during the test period period This test checks the relay driver circuits and can be used to test the external release block cables release block connectors and RELOC module operations see Chapter 8 2 3 3 4 INVERTED ECHO SOUNDER MODEL 6 2 3 3 BATTERY LIFE Note As of this printing January 2005 the only battery cells suitable for the IES Model 6 2 battery pack is the size DD lithium thionyl chlo
121. it is wise to deliberately load the cells prior to use until the passivation layer is removed Once the cells have been cleaned de passivated the routine data acquisition operations of the IES will keep them clean URI GSO provides a battery tester and de passivator for this purpose This instrument will intermittently push button control load each individual battery stack in an IES battery pack to its maximum current capability The user can monitor the voltage during the loading process to determine when the passivation layer has been removed and the voltage no longer drops below minimum values 3 6 INVERTED ECHO SOUNDER MODEL 6 2 3 4 DATA ACQUISITION SCHEDULES There are two data acquisition schedules that must be configured before starting an IES mission the travel time measurements and the pressure temperature measurements if the optional high pressure sensor is installed A third measurement schedule the engineering data is on a fixed schedule of once per day as outlined below These schedules may be independently chosen and all are synchronized to the real time clock as described below 3 4 1 Travel Time Measurements If the travel time TT measurements are enabled there are always 24 TTs in an hour The user can program how these 24 measurements are spaced within the hour The TT measurements are grouped in bursts such that one burst hour programs 24 TT measurements in a single burst two bursts hour programs 12 TTs in two bursts
122. ject name in the paths to your data folder sources and destinations 8 Set up your hardware as shown in Figure 11 1 CHAPTER 11 Acoustic Tracking amp Telemetry At Sea Operations 11 RS 232 cable Benthos DS 7000 Benthos DS 7000 DB9 male female Deck Unit RS232 cable DB9 male male Switch Detail 1234 or Figure 11 1 IES Acoustic Tracking amp Telemetry Hardware Setup 11 4 INVERTED ECHO SOUNDER MODEL 6 2 11 2 Preparations Prior to Individual Sites Note The following operational procedures assume that you are using the Benthos DS 7000 over the side acoustic transducer to communicate with the IES This means that you are not able to move the ship while the transducer is in the water If you are using the ship s hull mounted transducer and can move during IES operations you can ignore the instructions dealing with ship s drift and just keep the ship positioned at the site providing the ship s propulsion system is not too noisy URI GSO has developed a form to log a telemetry session see section 11 2 1 Make a copy of this form for each site to be visited After you fill out the top portion of the form prior to arrival at the site you will know how much time the telemetry operation will require It is important to know this information if you plan on drifting during the data transfer you may have to make multiple passes if the telemetry file is very big or the drift rate is high enough t
123. l from the IES on the seafloor to the sea surface and return 1 the time it takes to detect the surface echo The IES processes 24 individual echo measurements to produce a single travel time In a typical deep sea experiment the ocean acoustic travel time sensitivity to changes in actual water surface height is about 1 3 milliseconds meter ms m with thermocline depth variations changing the travel time by approximately 0 05 ms m To eliminate early echoes from reverberation and false targets the IES echo detector is disabled immediately after the acoustic transmission for a period of time called the lockout time The detector is enabled again just before the anticipated surface echo minimize false echoes from fish and other weak targets the IES acoustic output power level is adjusted for depth under firmware control so that the sea surface is the most viable target The optimal ockout time and output power level are suggested by the IES firmware after the user estimates the deployment depth see Chapter 2 3 3 the user can override these suggestions CHAPTER 1 OVERVIEW 1 5 17 PRESSURE AND TEMPERATURE MEASUREMENTS An IES equipped with the pressure measurement option PIES uses a quartz pressure sensor made by Paroscientific Inc for high accuracy and resolution Paroscientific s stated accuracy of 0 01 for this line of sensor is well established Typical resolution of Paros sensors is better than part per million and under
124. l time and pressure measurements The Aanderaa model 3820R provides velocity heading tilt and temperature sensors The device once switched ON by the IES controls its own sampling ensemble Data are output in engineering units cm sec degrees heading etc after a number of measurements are averaged Further DCS details can be found in Aanderaa s Operating Manual Doppler Current Sensor 3900R 12 2 Doppler Current Sensor Specifications Current Speed from vector averaged velocity Range 0 300 cm s Resolution 0 03 cm s Accuracy Absolute 0 15 cm s Relative 1 of reading Statistical precision 0 5 cm s standard deviation Current Direction vector averaged Range 0 360 magnetic Resolution 0 35 Accuracy X5 for 0 15 tilt 7 5 for 15 35 tilt Temperature Range 10 to 43 C Accuracy 0 08 C Resolution 0 01 C Tilt Accuracy 1 5 Compass Accuracy 3 RS 232 output signal 4800 8 N 2 Acoustic Frequency 2MHz Acoustic Power 25W in 1ms pulses Beam Angle 1 main lobe CHAPTER 12 Aanderaa Acoustic Doppler Current Sensor Option 12 3 12 3 DCS Setup Menu The DCS can be configured scheduled and tested via the IES User s Menu interface When the DCS option is installed in the Model 6 2 IES an additional setup menu will become available from the general mission setup menu see selection K in Figure 12 2 IES HyperTerminal i ml Edi View Call Transfer Help
125. lease battery voltage in Volts SysVbat the system battery voltage in Volts IntPress the internal pressure vacuum in psia NOT INSTALLED IntTemp the internal temperature in degrees TTav the average travel time for the previous day in units of 107 second Pav the average pressure for the previous day in units of 10 uPa Tav the average temperature for the previous day in units of 107 degree C Pfrq the last pressure sensor raw data value in Hertz Tfrq the last temperature sensor raw data value in Hertz ClkfrqDiff the error from 32768Hz of the IES clock crystal in Hertz Example E 2001 11 21 12 48 26 039 279551 3 06 0 84 38 02 14 19 6 93 0 20 4 16 8 7113 10074 5222 33025 691 171162 844 0 238 279575 3 07 0 86 38 04 14 18 6 92 0 20 3 65 8 7114 10285 0 33025 504 171160 109 0 271 279599 3 07 0 84 37 98 14 18 6 90 0 19 3 48 8 7114 10384 0 33025 574 171160 469 0 270 279623 3 08 0 74 38 01 14 16 6 91 0 19 3 51 8 7114 10439 0 33025 637 171160 984 0 270 279647 3 06 0 79 38 04 14 18 6 90 0 20 3 74 8 7114 10415 0 33025 609 171161 109 0 262 Example Notes gt hour value on the first engineering data record corresponds to the 23 hour of the first day of data collection It may or may not be the 23 hour of the date in the meta data record because the IES may have been turned OFF after the mission was started but before any data were collected and then turned ON days even months later Looking at the ti
126. lemetry continues until the entire data file is transferred the IES will restart the 4 second beacon enter a low power state and NOT accept any further ACS commands The 4 second beacon will continue until the batteries are exhausted 5 If when the IES wakes up it detects a RELEASE command it will restart the 4 second beacon reset the three hour timer and loop back to step 1 above CHAPTER 11 Acoustic Tracking amp Telemetry At Sea Operations 11 1 Chapter 11 Acoustic Tracking amp Telemetry At Sea Operations 11 1 Telemetry Cruise Preparations This chapter is divided into three parts in the form of task lists that should be performed 1 Prior to the cruise as part of cruise preparations 2 Just prior to arriving at the IES deployment site 3 At the start and during the telemetry operations 11 1 1 Hardware amp Software Requirements part of cruise preparations The following hardware is recommended to conduct IES acoustic tracking amp telemetry operations gt Benthos DS 7000 Acoustic Transceiver configured for eight receiver channels and programmed to transmit URI GSO command codes special order from Benthos gt Appropriate cable connector to interface with the DS 7000 Auxiliary Port RS 232 communication output gt Data Tap Module B amp B Electronics Model No 9PCDT with appropriate RS232 cables as shown in Figure 11 1 gt Two computers one for direct RS 232 communications with the DS 7000 and one for eaves
127. lfunctioning and collecting faulty data If the former make the adjustments and return to step 1 of this operation If the problem is with the IES wait for another burst telemetry and confirm the analysis before deciding to recover the IES for repairs The ship itself can be a target for the IES echo detector so small errors in travel time on the scale of the ship s draft should be ignored Also the reported depth from pressure will usually be in error by 10 40 meters until the pressure sensor equilibrates with the bottom temperature requires 20 hours If you experience false marker pulses or other acoustic signals at inappropriate times you should reduce the gain of the DS 7000 deck unit To adjust the gain of all six channels of the DS 7000 edit the BurstPDT m script file and change the variable gain one place at the top of the file The default at this date 2 11 03 is gain 3 for all six channels Change the name of the burst dat file to include the PIES serial number and move it to an appropriately named archive directory CHAPTER 10 ADVANCED ACOUSTIC TELEMETRY 10 7 10 9 File Telemetry File telemetry is used to transfer processed scientifically significant data data collected in lieu of recovering the IES to access the data The data transfer process involves two different protocols MSB and LSB The MSB most significant bits record similar to the burst telemetry record reports the full data values The res
128. llowing sections to set up your IES mission 2 2 INVERTED ECHO SOUNDER MODEL 6 2 2 1 INTERNAL SWITCHES amp CONNECTORS Figure 2 1 displays the switches and connectors used in routine operations acoustic JP4 JP3 JP2 JP1 command code jumpers m CF1 4 acoustic transducer 3 nome connect ud HE memory 51 i card XMT STBY EIE Switch es amp release indicator red LED J4 RELOC module Bliley connect reference oscillator 402 battery RESET connect J7 2 current meter LOCAL ON OFF connect REMOTE control switch J3 RS232 connect J5 external cable connect J6 pressure sensor connect Figure 2 1 IES Model 6 2 Internal Switches and Connectors S1 turns ON OFF the high voltage to the acoustic output driver It should be in the XMIT position when the instrument is sealed up for deployment It should be in the STBY position during periods of testing when there is a risk that the user may contact the high voltages on connector J1 DANGER at full output there is 2500Volts at J1 S2 overrides the external ON OFF switch so that the IES electronics can be turned ON OFF when the external cable is removed It should be in the REMOTE position during deployment so that the external cable switch can control the ON OFF function and in the LOCAL position when the IES is being tested with the sphere opened JP2 JP3 JP4 these jumpers or switches encode the acoustic command system Th
129. long periods of time corrosion between dissimilar metals in the anchor assembly and attachment mechanism should be taken into consideration the integrity of the IES attachment point and the overall mass of the anchor should not be compromised due to long term corrosion properties The pressure sensing circuit in the IES is so sensitive that it will detect small changes 1mm the height of the IES from the sea floor deterioration of the mooring system or its response to variable bottom currents will contaminate the pressure measurement This is the reason that long gt 1 0 meter anchor lines should NOT be used If an IES with a pressure sensor is to be deployed at a site with an anticipated maximum bottom current flow greater than 0 6 knot 30cm sec a rigid mooring stand should be utilized consult URI GSO for more information regarding this application When choosing and attaching the IES anchor follow these general rules e Select an anchor that weighs between 100 120lbs 45 55 kg in air and at least 88Ibs 40kg in water e Use a 5 16 8mm diam nylon or dacron anchor line that will position the IES 1 0 meter above the seafloor Attach the anchor line at the center of mass of the anchor so that the IES cannot pick up end of the weight For example if using salvaged anchor chain clump the chain together so that it reacts as a single mass see Figure 8 1 e Double wrap and tie the line tight around the anchor to m
130. md 2 ping reply Drift Heading Position re site start finish TELEM cmd sent GMT ACS replies kHz Start telemetry GMT DS 7000 GAIN Matlab setting Conditions modifications during transmission CLEAR cmd required required ONLY if entire telemetry file was NOT transmitted Routine IES tau sampling resumed E 1 ping GMT Simultaneous CTD y n CTD data file name Tau rollovers Data quality Press rollovers y n Data quality C PIES only gt Speed Data Quality NOTES 11 6 INVERTED ECHO SOUNDER MODEL 6 2 11 3 Starting and Maintaining a Telemetry Session 1 Two Matlab sessions running simultaneously on a single computer are required one to receive and log the data and the other to plot the data Start the receiver program first The plotter program can be started at any time it will plot whatever is in available in the data file 2 At times if a data value is missing or does not make any sense the plotting program will stop and return to the Matlab prompt If this happens simply restart the display program PPlotPDT or CPlotPDT No data will be lost however a gap may appear in the plot Note The horizontal index number that appears on the plot is an indication of the number of valid data frames that the receiver has detected it is not an accurate indication of the number of frames that have been transmitted by the IES or when the transmission pauses will occur The best indication of
131. me stamps of the RES records in the system log file should help to reconstruct the ON OFF time line of the IES gt The hour stamp in the engineering data records increments by 24 hours CHAPTER 4 DATA RECOVERY amp ANALYSIS 4 7 4 3 3 Travel Time Data File The travel time data T _XX dat will begin with this meta data record T yyyy mm dd hh mm ss IES s n TTint and is followed by these data records hour TT1 TT2 TT24 Definition of terms The record is the first record of the travel time file Besides the time stamp in calendar format it contains IES s n the IES instrument serial number and the travel time burst measurement interval TTint in minutes A travel time meta data record will be composed and written to the memory card each time a new travel time data file is created it will always be the first record in the T _XX dat file The travel time data file is composed of a time stamp followed by the 24 travel time measurements that were taken during that hour Travel time data are saved in a day buffer until the end of the last daily measurement activities at which time they will be appended to the active T _XX dat file on the memory card hour the number of hours elapsed since 0 hours 1970 1 1 TT1 TT24 the 24 travel times measured during the indicated hour in units of 10 second Example T 2001 11 21 12 48 26 039 10 279540000000000000000000 0 0 999999 999999 9
132. meso scale ocean currents and frontal zones have demonstrated that VATT can often be re interpreted as geopotential height dynamic height which varies due to current meandering and eddies Thus the IES is well suited to monitor changes in temperature structure and dynamic height In many regions the vertical profiles of temperature and geopotential height which vary with time may be determined from VATT measurements Data from laterally separated IESs can then estimate horizontal gradients in geopotential height from which geostrophic ocean current profiles may be calculated In addition to the largely baroclinic IES measured VATT barotropic near bottom pressure variations may be measured with an optional pressure sensor The Paroscientific Digiquartz sensor is used to achieve the desired accuracy and long term stability and for consistency with this purpose a super stable temperature calibrated time base is added The Digiquartz sensor also measures the near bottom temperature this is used to correct for the slight temperature sensitivity of both the pressure sensor and the IES time base Our engineering research group has been directly involved in more than 25 years of development and field experience with IESs at Yale and Columbia Universities Woods Hole Oceanographic Institution WHOD and the University of Rhode Island URI The new Model 6 2 IES retains a measurement system based on a beamed acoustic transducer and our echo detector wit
133. mportant to install desiccant silica gel to absorb condensation 7 2 INVERTED ECHO SOUNDER MODEL 6 2 7 2 SEALING THE GLASS SPHERE After the battery assembly has been attached to the IES electronics follow these steps to prepare the electronic assembly for sealing in the glass sphere 1 EE eas 12 13 14 15 16 17 Select the glass hemisphere with the acoustic transducer attached and support it so that the transducer is pointing down and the open hemisphere is facing up like a bowl One of the foam blocks from the shipping container is ideal for this operation Pull the IES transducer cable from inside the glass and hang it over the side of the hemisphere Install packets of fresh dry desiccant in the orange desiccant sock on the IES frame Make sure that both hemispheres have matching serial numbers and that the pressure transducer is the correct one for the IES Lift the IES electronics assembly with the finger holes battery on the bottom and lower it between the rubber bumpers on the side of the glass Keep all the yellow arrow labels on IES and glass on the same side of the hemisphere Rotate the IES electronics assembly until it is firmly wedged under the rubber blocks Align the yellow arrow labels of the electronics package with the yellow arrows on the glass Make sure that the transducer cable is not pinched between frame and glass Plug the transducer cable into connector J1 see Figure 2 1 S
134. mulator If the URI GSO Echo Simulator is not available a 12 0kHz acoustic pulse any length gt 6 milliseconds through a speaker aimed at the IES transducer and time delayed with a stopwatch will provide a qualitative test of the echo detect circuits C Precision frequency reference test measure CF1 pin 35 turns on the Bliley 4 0 MHz frequency reference circuit for 15 seconds measured with a frequency counter at pin 35 on the connector Note There is a small white dot on the main circuit board next to CF1 35 With no temperature correction this measurement should not be more than 4 ppm 16Hz in error from 0 to 25 C CHAPTER 3 ADVANCED PLANNING amp PREDEPLOYMENT CHECKS 3 3 3 2 SELF TEST MENU cont d D Pressure Sensor Test a single P amp T measurement pair tests the pressure temperature and frequency reference 4MHz circuits This menu selection will appear only if the optional pressure sensor is installed If no pressure is applied to the IES pressure port the measurement should indicate approximate barometric pressure and ambient temperature if the IES is oriented with the acoustic transducer facing UP If a calibrated pressure is applied to the pressure port the IES should measure within 0 01 FS of the pressure applied Warning applied pressure must not exceed the pressure rating of the sensor G Output Power Test measures the power in Watts delivered to the acoustic output transformer Th
135. n Gerry Chaplin A wy Pate Feb 23 2005 Drawn by Chaplin Filename 1ES62_A sch Sheet 3 of 6 A B D D Ri 10 REL CURR SENSE Mn 1 SYS CURR SENSE WATCHD TIMER 12 5 CHDOG 2 minutes i El R85 101 017 3V OV VBATT 00K R99 R98 100 20 U22 1 R128 80 R129 v 10K 1 S 40K 1 3 3K our 929 3 3K 19 Iscik 1 2 1 18 3 5 RESETIN WDS DA13 4 x
136. ng handle buckle and clasp relative to the top of the assembly Adjust the buckle of the belt so that when the belt ends are joined together the belt is tight around the sphere Put a tape strip across the lifting strap on both sides of the lifting handle as shown in Figure 7 1 and 7 2 The IES sphere assembly is now ready to be installed into the hard hat CHAPTER 7 1 5 ASSEMBLY 7 3 PRESSURE P ORT STRAP BUCKLE TAPE STRIP Figure 7 1 IES Sphere Assembly Warning Even a slight vacuum will firmly hold the glass hemispheres together If the IES is going to be shipped by air it is important that a vacuum of 1 3 atmosphere be created inside the sphere to prevent the pressure differential at high altitudes from forcing the sphere open However do not create a vacuum greater than 20 Hg vacuum because arcing between high voltage components may occur 7 4 INVERTED ECHO SOUNDER MODEL 6 2 7 3 HARD HAT ASSEMBLY After the electronics are sealed inside the glass sphere follow these steps to install the sphere inside the white plastic hard hat as shown in Figure 7 2 The hardware required to assemble the hard hat is shown in Figure 7 3 Warning During this assembly procedure the upper hard hat is actually under the lower hard hat In the following steps don t get the terminology mixed up upper and lower refer to names of the hard hats as shown in Figure 7 1 and not to their position in this
137. nly have to collect the data accumulated since the most recent telemetry collection The telem dat file is created when the system initially starts its mission At that time two records are written to the file a time stamp record and a telemetry file empty record which has the same format as a data record but the values are year day 375 tau 0 and pressure 0 Since the telemetry file is read backwards this record will flag the end of the telemetry file data With this file it is easy to see the end of the telemetry session when the data are being plotted as they are received CHAPTER 10 ADVANCED ACOUSTIC TELEMETRY 10 9 File Telemetry cont d year day HEADING range 1 400 range 0 400 1 count 5msec 133 degree 1 msec PRESSURE TAU SPEED MARKER range 0 7000000 decaPascal range 0 9 seconds range 0 250cm sec MARKER 500 decaPascal 1msec 1 5msec tau 1msec 0833cm sec 1msec Y Y 11 5kHz 12 0kHz 12 5kHz 10 5kHz 13 0kHz A 14 sec gt 6 sec gt 2 lt 3 gt 3 gt 10 0kHz 11 0kHz es Note 0 25 second quiet zone between data words 0 lt PIES record frame 24 seconds C PIES record frame 30 seconds TIME Figure 10 2 C PIES File Telemetry MSB Record Framing Omit speed amp heading values and make record frame 24 secs for PIES telemetry year day HEADING range 1 400 range 0 400 1 count
138. noted stores data to the DCS flash memory The flash memory cannot be overwritten more than 10000 times hence these commands are only used during setup and are not used during data logging operations A brief description of each command follows For a comprehensive description of these and additional commands refer to the Aanderaa Operating Manual for the Doppler Current Sensor 3900R 12 4 1 Set Property Averagebase 300 Set the number of pings that will serve as the base for a current speed and direction measurement The Averagebase can vary between and 300 ping sets One ping set consists of two pings The Averagebase will also affect the interval between each output in non polled mode 12 4 2 Set Property Current Type Rectangular Sets whether the output is reported in polar coordinates speed direction or rectangular coordinates north east format 12 4 3 Set_Property_Compensation_Compass On Sets whether the estimated current should be compensated for compass readings or not On implies that currents are reported in coordinates relative to magnetic North 12 4 4 Set_Property_Compensation_Tilt On Sets whether the estimated current should be compensated for tilt readings or not implies that the true horizontal components of current are calculated 12 5 5 Set Property Compensation Upstream On Sets whether the DCS should sense and compensate for upstream currents 1 e the DCS will ping toward the current flow If th
139. ns regarding the release function The IES data acquisition subsystem will not detect the release activation until the next ten minute wakeup When the IES data acquisition subsystem detects the active release it performs the following tasks Writes the release time in the system log Moves all data in the day buffers to the memory card Writes an engineering data record to the memory card Stops the data acquisition schedule and returns to listening mode WARNING When performing short tests in the lab it is important to remember that after an acoustic ACS release the IES does not transfer the data to the memory card until the NEXT ten minute wakeup If during testing on the lab bench you RESET to the menu mode after an ACS release without waiting for the data to be transferred you will lose the data from that day that have been temporarily stored in RAM memory If you don t activate the release but you want to transfer the data from a short test to the memory card connect your PC wait for the next ten minute wake up establish communications with the IES go to the Memory Card Operations Menu see Chapter 2 3 4 and select F Save RAM data to Memory Card the data buffers will then be appended to the existing data files 5 8 INVERTED ECHO SOUNDER MODEL 6 2 THIS PAGE INTENTIONALLY LEFT BLANK CHAPTER 6 CIRCUIT DETAILS 6 1 Chapter 6 CIRCUIT DETAILS 6 1 BATTERY PACK Refer to Figure 6 1 for a diagram of the IES Mod
140. nsor Setup Menu Select pressure amp temperature measurement schedule Enter pressure sensor conversion coefficients Enable disable the pressure sensor raw data file Return to Mission Setup Menu 9600 8 N 1 A Select pressure amp temperature measurement schedule displays the current schedule and other options including disabling the pressure and temperature measurements if there is no pressure sensor To change the schedule select an option and the new schedule will be displayed Note that the new schedule has not yet been saved to non volatile memory this will not happen until data acquisition has started and the entire mission configuration is saved see selection S or G B Enter pressure sensor conversion coefficients displays the serial number of the pressure sensor and each of the sensor s calibration coefficients The user is prompted for modifications The serial number and temperature coefficients of the Bliley reference frequency oscillator crystal are also displayed and modifications solicited The pressure sensor and oscillator are not smart devices i e the user must load the serial numbers and coefficients the IES does not detect them The proper values are set initially for the sensor and crystal provided with the instrument and a copy of the coefficients is shipped with the documentation packet for each IES If the pressure sensor or reference oscillator crystal is changed a n
141. nt in situ data processing the IES discards these zero values The IES s daily data processing session which updates the telem dat file occurs after the day s last data acquisition tasks are complete i e after 23 50 00 The file telemetry session must not interfere with this essential function so the file telemetry process is locked out after any data block is finished after 23 30 00 i e the telemetry is locked out for 15 to 30 minutes prior to 00 00 00 In other words if a file telemetry session is in progress and the 1 minute pause occurs between 23 30 00 and 00 00 00 the telemetry session will not resume after the pause However the file pointer will be saved and if the TELEM command is re sent after the 00 00 00 tasks are complete the file data telemetry will continue from the saved point in the telem dat file If the TELEM command is disabled with the CLEAR command the file pointer will be saved for 24 hours re the start of the telemetry session If the TELEM command is re sent within this 24 hour period the data transfer will continue from where it left off otherwise after 24 hours the pointer will be returned to the end of the telem dat file and the most recent data will again be transmitted first Regardless of the position of the file pointer the telem dat file will remain in place with additional data being appended each day Since the file telemetry access is last in first out if you return months later you o
142. nticipated deployment pressure 1000dbar for some period prior to the actual IES deployment This is particularly true for new sensors Pre stressing for two months is recommended Be careful not to exceed the full scale range of the sensor 1 6 INVERTED ECHO SOUNDER MODEL 6 2 1 8 IES PARTS LOCATION DIAGRAM Take a few moments to look over the following diagram The parts pointed out in the diagram are discussed in succeeding chapters of this manual 4 Transducer Guard Recovery Line Acoustic Transducer Acoustic Output Cable Release Battery System Battery CF1 Electronic D Rubber Mounts Reloc Module Reloc Control Board Internal Cable Lower Hard Hat Pressure Sensor Pressure Port External Cable Flag Holder Release Block Vacuum Port On Off red Release Block Guard Cathode EE Release Block Anchor Line Connections Figure 1 1 IES Model 6 2 Parts Location Diagram CHAPTER 2_GETTING STARTED CONFIGURING THE IES 2 1 Chapter 2 GETTING STARTED CONFIGURING THE Model 6 2 IES This chapter provides instructions on how to use the internal and external switches and connectors understand the acoustic diagnostic signals establish communications with the IES use the menus to set up and start an IES mission Note As you read the following sections keep in mind the parts location drawing Figure 1 1
143. ntinue to be active until the IES batteries both system and release batteries are exhausted A photoelectric switch controls the flasher which only operates in darkness After the release is activated and the IES is on the surface the RELOC module will operate for about 60 hours with a 30 Amp hr stack of release battery cells or 120 hours with a 60 Amp hr stack of cells Remember The RELOC radio flasher module only operates when the acoustic transducer is facing DOWN and the flasher only when it is dark CHAPTER 6 CIRCUIT DETAILS 6 3 6 4 FAIL SAFE CIRCUITS e Watchdog Timer A watchdog alarm will attempt to restart the instrument if the IES computer module is inactive longer than 12 minutes The IES wakes up from sleep mode every 10 minutes to check its measurement schedule and resets the watchdog timer missing one of these 10 minute timer resets will cause the watchdog to RESET the IES after about 12 minutes The watchdog timer circuit operates with an independent time base and is powered exclusively by the system battery The watchdog is operating whenever the IES is in data acquisition mode but is disabled when the IES is in menu mode or when an acoustic or timed release is detected The time of each IES RESET will be noted in the IES log file as outlined in Section 4 3 1 The watchdog timer is independent of the acoustic command subsystem and does not monitor or control its operations However if the watc
144. o 50 meters above the sea floor This feature has been developed and field tested to 6000 meter depth 12 1 General Description An Aanderaa Model 3820R Doppler Current Sensor DCS can be added to the IES Model 6 2 as shown in Figure 12 1 This sensor head is the same device used in Aanderaa s Model RCM11 Current Meter For this application it has been modified for remote control and data storage floating recovery line 17 glass flotation sphere Aanderaa Doppler current sensor model 3820R p n 0973820R deep water stud p n 0973886 50 meter x 8mm cable p n 0973883E 50 meters URI GSO _ Inverted Echo Sounder pressure sensor option expendable anchor plates platform Figure 12 1 IES with Doppler Current Sensor DCS Deployed View 12 2 INVERTED ECHO SOUNDER MODEL 6 2 General Description continued An auxiliary RS 232 communications port standard on the Model 6 2 circuit board provides an interface with any sensor that conforms to smart sensor communications protocols in this case the Aanderaa DCS Power to the DCS is provided by the IES battery pack and switched via the auxiliary COM port through a glass sphere bulkhead connector to the 50 meter cable Current measurements are synchronized with the IES s travel time and pressure measurements and all scheduled by the IES real time clock DCS data are stored on the IES flash memory card in a format compatible with the IES trave
145. o push you out of range gt 1 5 mile before the process is complete 1 Put the DS 7000 in REMOTE mode and run Traxset m to set up the DS 7000 for 12 00kHz listening on channel all other channels will be OFF The output power will be set to maximum 7 and the GAIN of channel will be set to maximum 8 these are default values and should be changed to suit the conditions see below 2 After arriving at the IES site make sure the ship s propellers are stopped and lower the DS 7000 transducer to a depth that is below the ship s keel Monitor the ship s drift speed and direction during the following operations 3 Confirm that the instrument is in fact still there by gt Listen for the IES sample and note the time of the 1 ping of a burst This will indicate the drift of the IES clock and hence tell you when telemetry transmissions will start amp pause gt Send the CLEAR command and listen for the 2 ping response This confirms that the IES acoustic command system ACS is working properly Note If you have problems with the IES accepting commands especially in shallow lt 2km water lower the output power To change the DS 7000 output power press the MODE SELECT button until you get to SETUP mode Then press MISC the arrow and you will arrive at a menu that will allow you to change the output power Note The DS 7000 gain steps are not in dB but in some Benthos scale Important note The internal battery of
146. occur mid deployment typically there will not be a telemetry session immediately prior to recovering the instrument However a provision has been added to insure that in the unlikely case that the IES does not leave the sea floor after the release command has been sent the data can be recovered even if the instrument is not Instrument programmed firmware prior to March 2004 After the IES release command has been sent and acknowledged the instrument initiates a 4 second acoustic tracking beacon that for IESs programmed prior to March 2004 continues until the IES is turned OFF or RESET The IES enters a low power state and can no longer accept acoustic commands Telemetry is not possible Instruments programmed firmware after March 2004 follow these steps 1 After a RELEASE command has been acknowledged and the burn wire anchor release mechanism has been activated the 4 second beacon will continue until the end of the third full hour re the IES clock 2 At the beginning of the fourth hour the 4 second beacon will cease and the IES s acoustic command subsystem ACS will be reset enabling it to accept further commands The burn wire anchor release mechanism will NOT be reset and will continue its attempt to release the IES from its anchor 3 The IES will wake up every ten minutes and if it detects that the ACS has received TELEM command it will start a file telemetry session as outlined in previous sections 4 If file te
147. of Chapter 1 7 This diagram shows the location of many of the IES elements referred to in the text The Model 6 2 IES is usually shipped sealed with its battery installed ready to be turned ON configured and deployed Follow these steps after unpacking the IES 1 3 Find the red ON OFF plug that is taped or strapped to the IES housing Pull the IES external ON OFF jack out of the lower hard hat and attach the red ON OFF plug You should hear a single ping followed about 15 seconds later by a double ping This indicates that the IES computer has booted properly into data acquisition mode Remove the yellow RS 232 plug from the IES connector and attach the external communications cable between the IES RS 232 connector and the serial port of your computer Start the IES Hyperterminal communications program See Chapter 2 2 on your PC and set up the serial port for baud 9600 8bits 1 stop no parity and no hardware or software handshaking Remove the red ON OFF plug from the IES and then plug it back in The IES should RESET again see Chapter 2 2 3 and the IES banner should appear on your computer screen If trash characters appear the computer serial port baud rate probably needs to be changed The IES is shipped with a baud rate of 9600 After the IES banner appears you have 5 seconds to press the lt space gt key on your computer to go to the IES Main Menu Once you are at the IES Main Menu you can proceed to the fo
148. olution in MSB record values is not high enough to show scientifically significant variability but will eliminate any ambiguity in the accompanying high resolution LSB records File telemetry LSB records report the least significant bits of the daily mean values of travel time modulo 0 5seconds pressure modulo 2000 decaPascals 2 meters and water speed modulo 40cm sec that is where the signals of interest are embedded A single MSB record will be sent at the start of each file telemetry data block of 27 days to remove the ambiguity due to the modulo operator rollover To summarize file telemetry LSB records provide optimized signal resolution but the user must use the MSB record information to provide add the most significant bits for overall accuracy The following discussion outlines the process File telemetry will transmit all of the data stored in the IES s telem dat file starting at the end most recent data of the file and proceeding backwards in time A data block transfer will start with an MSB and an LSB transmission of the first telem dat record and continue with only LSB transmissions of the next 26 records 28 transmissions x 30seconds 14 minutes and then stop for one minute This pause allows time for the shipboard personnel to evaluate the data transfer and if necessary send the CLEAR command to stop the data transmission allowing time for adjustments to be made e g change the receiver gain settings adjust t
149. ommunicate and offload data from the IES and MotoCross exe is used to load new IES firmware if necessary Additional directories may exist depending on what options were installed Hyperterminal is a communications program bundled with MicroSoft Windows software in the c programfiles accessories communications directory if you do not have it copy the IES disk Hyperterminal directory to your computer and create a desktop shortcut to IES ht If you already have a Hyperterminal directory install only IES ht and ies ico in that directory then create a shortcut on the desktop to IES ht If you then right click the desktop icon and select properties you can change the desktop icon to the special URI GSO IES icon MotoCross is a communications program specifically designed to load new application programs to the IES CF1 computer module Copy the MotoCross directory from the IES User s Disk to your computer and create a desktop shortcut to MotoCross exe Instructions for loading new IES firmware are provided in Chapter 9 5 2 2 1 Communications Setup There are two ways to set up communications with the Model 6 2 IES follow either of these steps e When the glass housing is open connect RS 232 cable p n 54 11 directly to the IES circuit board at connector J3 With your computer running IES ht press the RESET button on the IES board and follow the prompts to reach the IES Main Menu e When the glass hou
150. operation of data acquisition electronics after the system is on the seafloor See Model 6 1E IES User s Manual Chapter 8 1 4 When the DCS option is installed there will be an additional 3 ping O Y sec rate signal from the C PIES after the standard telemetry pings if the DCS data is NOT available i e if the current meter is not responding In other words if you do NOT hear a three ping signal after the standard 2 ping telemetry signal you can assume that the DCS is operating properly 12 12 C PIES Recovery The recovery of the C PIES assembly is identical with that of standard IES except that it will rise from the sea floor at about 92 m min When lifting the C PIES aboard the ship the lifting line should be hooked on the lifting line of the IES DO NOT LIFT THE C PIES ON BOARD USING THE DCS SENSOR CABLE 12 8 INVERTED ECHO SOUNDER MODEL 6 2 Photo 12 1 Anchor Platform Attachment to C PIES Photo 12 2 Lifting Point for C PIES Deployment Appendix Nautilus style Glass Sealing Precautions A 2 IES Schematics A 2 1 IES Power Conditioner A 2 2 IES Preamp amp Output Driver 2 3 IES Echo Detector A 2 4 IES PIC Decoder amp Release Relay A 2 5 IES Ref Oscillator amp Dividers A 2 6 Interface 27 IES 17 Battery Pack A 3 IES Test Accessories Schematics A 3 1 Echo Simulator A 3 2 Signal Insertion Cable A 3 3 Release Simulator A 3 4 Battery Tester THIS PAGE INTENTIONALLY LEFT BLANK NAUTI
151. or this small window a one minute warning is sent as a prompt at the nine minute mark e g 09 00 19 00 29 00 etc After the one minute warning the user can simply hold down the lt space gt key on the computer and the IES will enter the Main Menu when it wakes up 50 seconds later In other words the one minute warning occurs 50 seconds before the start of the window of opportunity for communications and 1 minute before the next set of data acquisition tasks CHAPTER 2_GETTING STARTED CONFIGURING THE IES 2 7 2 3 2 IES Main Menu Once communications has been established the IES Main Menu will appear similar to the screen below The top banner lists any optional sensors that have been installed IES HyperTerminal File Edit View Call Transfer Help Inverted Echo Sounder Model 6 1E Version 12 2004 28 23 41 Serial 129 Optional Sensors Installed pressure sensor University of Rhode Island Graduate School of Oceanography Current IES day date and time is Mon Dec 6 16 03 57 2084 Adjusting transmitter power wait RESET record written to system log ping Press the space key within the next 18 seconds to enter the IES Main Menu otherwise data collection vill start with previous operating parameters ES Main Menu 9x 479 CC C BC C CIC C CC CE Self Test Menu Memory Card Menu Mission Setup amp START Menu RESET Connected 0 06
152. pace is 8500 bytes day so the standard card will support 5 year deployments There are larger memory cards available up to 192Mbytes to support longer deployments or custom high capacity data collection schemes Consult URI GSO for assistance in customizing schedules and memory capacity The memory card capacity influences the auto release date and time selection see Chapter 3 7 If there is not enough memory capacity to allow the IES as it is currently configured to collect data until the auto release date the IES will not allow the mission to start To abandon the auto release feature you cannot put the auto release date so far in the future that the memory capacity requirement as stated above is violated At this time 2005 10 10 the standard memory card size is 32 Mbytes this should allow the user to program the auto release date far enough in the future without compromising the memory requirement or the mission startup to effectively disable the auto release feature Table of Memory Requirements vs Sampling Schedule Includes requirements for pressure P amp T and Doppler current sensor DCS options Requirements in bytes for 30 days deployment Sample rate Record type 10 min 20 min 30 min 60 min Tau 125K 125K 125K 125K P amp T 23K 17K 15K 14K DCS 439K 220K 110K 55K Eng 3K 3K 3K 3K Telem 1K 1K 1K 1K Sys log will depend on errors during operations no problems no error messages
153. pic pressure resolution better than 10uPa 0 1 mbar equivalent to 0 001 m water Web page http calvin gso uri edu includes photos project descriptions and link to IES bibliography 1 2 INVERTED ECHO SOUNDER MODEL 6 2 1 2 OPTIONAL MODIFICATIONS At this printing 1 1 2005 the available options are Pressure sensor for measurement of absolute bottom pressure Aanderaa model 3820R acoustic Doppler current sensor single point up to 50 meters above the moored IES 1 3 STANDARD ACCESSORIES The following accessories with URI GSO part numbers are standard and are provided with each instrument or group of instruments e Recovery flag P N 13 07 e Polypropylene recovery line P N 11 08 e Spare release block P N 12 05 e Spare mechanical parts kit P N 10 05 see Appendix F gt nylon hardware 3 8 16 x 1 25 bolts with washers and nuts 2 gt nylon hardware 3 8 16 x 2 00 release block mount bolt 1 gt anchor line 5 16 Dacron 2 gt plastic cable ties 6 e Internal communications cable 6ft P N 54 11 2 each for each group shipment e External communications cable 6 ft P N 51 05 2 each for each group shipment e ES User Software Disk P N 59 01 e IES Model 6 2 User Manual P N 58 01 e Glass sphere sealing materials kit P N 11 12 see Appendix F e Calibration documents for pressure and temperature sensor P N 58 02 e Calibration document for IES time base P N 58 03 1 4 REFURBISHING KITS A
154. ride LiSOCL Two recommended sources are gt Tadiran Inc model no T 5137 T Contact their web site www tadiranbat com for the address of your local distributor gt ZenoEnergy Co Ltd Inc model no XL 205F IS2P TI This is a proprietary cell configuration that will require an approval of purchase from URI GSO There are two batteries in the IES a system battery to power the data acquisition functions and the release battery to power the acoustic command functions we will refer to the mechanical package that houses these two batteries as the battery pack To determine the proper system battery capacity for a given mission refer to Figure 3 1 There are only two mission configuration selections that influence the battery requirement the depth of the deployment site and pressure measurement rate both of these selections are made by the user in the Mission Setup Menu see Chapter 2 3 3 After the user has entered the depth estimate the IES will recommend the appropriate output power level the power level must be known to use Figure 3 1 Knowing the output power level and the pressure measurement rate the user can find the average system battery drain and life expectancy of two configurations of IES system batteries 120 Amp hr and 180 Amp hr Follow the example below the figure 4yr Bs 120 Ampehr 180 Amp hr gt gt batt duration batt duration 1 170 175 180 185 190
155. s a shock absorber e If the IES acoustic release has been accidentally activated during previous operations it will not be obvious since the 4 sec pinger does not become active unless current is flowing through the release block via the sea water path Immediately before launch momentarily connect the anode to the cathode of the release block if the 4 sec pinger comes on the release relay has been accidentally activated and the IES must be RESET To RESET the IES simply turn it OFF then ON and wait for the double ping that indicates proper resumption of the mission refer to Chapter 2 2 2 This action will not alter the internal clock mission configuration or the data files so the deployment can continue A record of this extra RESET will appear in the IES log file e tis also important to check the IES vacuum seal just before launch You can see the vacuum gauge altimeter thru the communications cable access hole Confirm that the gauge needle points to the green dot if the needle has moved counterclockwise toward the red dot the launch should be aborted and the IES re sealed 8 2 INVERTED ECHO SOUNDER MODEL 6 2 8 1 2 Selecting and Attaching the IES Anchor Almost any kind of high density mass can be used as an IES anchor A variety of salvaged objects have been successfully used auto engine blocks sections of train rails old ship s anchor chain and lead embedded concrete blocks Since the IES is usually deployed for
156. s a special mooring platform to avoid affecting the IES pressure gauge sensing the tilt of the 50 meter mooring line This is the same platform used for standard IES deployments where the bottom current could exceed 35 cm sec The platform is made of uncoated steel and weights about 65 Ib 30 kg The additional iron anchor 100 Ib or 45 kg is required to firmly seat the IES in the mooring stand after the assembly has landed on the bottom Both the platform and the anchor are left behind when the C PIES is released from the bottom The total system weight is about 270 lb 123 kg in air Without the anchor platform the system has about 65 lb 30 kg of buoyancy in seawater 12 10 Deploying the C PIES Attach the mooring anchor frame to the IES as shown in Photo 12 1 The C PIES assembly is deployed recovery line first with the ship underway at about knot Let the recovery line floatation sphere DCS sensor and connecting cable stream behind the ship holding the anchor frame IES on deck attached to the crane When these components are streaming behind the ship lift the frame with a quick release hook as shown in Photo 12 2 do not lift from the IES lower the C PIES to the water surface and trip the quick release hook The mooring will fall to the seafloor at about 72 meters min 12 11 Post Deployment Confirmation of DCS Operation The standard Model 6 1E IES is equipped with an acoustic telemetry feature that allows the user to confirm proper
157. s the RTC oscillator frequency using the IES s super stable Bliley crystal oscillator and corrects the IES clock This correction should keep the IES clock accurate to within an estimated 10 seconds year The IES dynamic clock adjustment works as follows At the end of each measurement hour after the xx 50 00 scheduled activities the IES will use its YSI thermistor circuit to measure the ambient temperature inside the IES This value is used to apply temperature compensation to determine the reference frequency Bliley oscillator The IES will then using the Bliley oscillator as a reference measure the CF1 RTC frequency and calculate the clock drift during the previous hour based on the error from the nominal value of 32768Hz Note that this assumes the temperature has been stable during the previous hour The IES will sum the errors from each hour s calculation until the clock drift becomes greater than 1 0 second The IES will then adjust the RTC appropriately by 1 0 second and reduce the error sum by 1 0 second Ideally if the operating temperature is stable the IES clock will never be in error by more than 1 0 second however temperature fluctuations on the order of 1 C in 30 minutes will introduce additional small errors INVERTED ECHO SOUNDER MODEL 6 2 THIS PAGE INTENTIONALLY LEFT BLANK CHAPTER 7 1 5 ASSEMBLY 7 1 Chapter 7 IES ASSEMBLY INSTRUCTIONS Note While reading this chapter refer to the IES Parts Location drawing Fig
158. s the sensor is in a calibrated flow tank or has a test unit attached A DCS testing device is available from Aanderaa Instruments Test Unit 3731 clamps over the sensor head and simulates current speed and direction See Anderaa s web site http www aanderaa com and datasheet 0320 for further details regarding this test device CHAPTER 12 Aanderaa Acoustic Doppler Current Sensor Option 12 7 12 8 C PIES Energy Budget Battery Requirements With the ping rate at 1200 and the IES measuring current every 10 minutes the DCS adds 6 0 mA to the average current drain from the IES 7 0Volt system battery This is in addition to the requirements for standard IES data acquisition Refer to the IES Model 6 1E User s Manual Chapter 3 3 for a chart that assists in the battery life calculation The C PIES system battery capacity is 240 Ampere hours this capacity is not shown on the chart but since the calculations are ratio metric you can use the 120Amp hr scale to scale your calculation For example In the example shown in Chapter 3 3 the average current drain is 3 2 mA Adding 6 0 mA for the DCS the average drain becomes 9 2 mA If we divide this in half 4 6 mA and reinterpret the 120 Amp hr scale to be a 240 Amp hr scale we see that we can get about 3 years with a 240 Amp hr battery Of course you can get a full 5 years by measuring current every 20 or 30 minutes 12 9 The C PIES mooring assembly As shown in Figure 1 1 the C PIES require
159. scribed above Errors in P amp T measurements may be caused by the sensor itself or the conversion process This feature is primarily a diagnostic tool to determine if the P amp T sensors can be eliminated as the source of error 3 4 4 Engineering Data Measurements Engineering data as described in Chapter 4 3 2 are collected once per day at the end of the measurement day at 23 50 00 hours or after any measurements scheduled for 23 50 hours This schedule is always enabled and cannot be modified by the user 3 4 5 Memory Card Operations To minimize power consumption the Model 6 1 IES collects a day s worth of data in RAM before it writes to the non volatile memory card i e the memory card is activated once per day to transfer data from RAM to the card This write operation is synchronized to the real time clock RTC of the CF1 computer module to occur at the end of the data acquisition day at 23 50 hours or after any scheduled 23 50 operations At the beginning and end of a mission there will most likely be partial days written to the card The data transfer operation will also occur when the IES detects an acoustic or auto release function CHAPTER 3 ADVANCED PLANNING amp PREDEPLOYMENT CHECKS 3 7 3 5 MEMORY CARD CAPACITY VS DEPLOYMENT TIME amp SAMPLING SCHEDULE The standard IES Model 6 2 memory card capacity is 32Mbytes If both travel time and pressure temperature measurement schedules are enabled the requirement for memory s
160. se of battery failure the system battery will attempt to assist the release battery but not vice versa SOLDER PADS ON PCB BATTERY CONNECTOR E 54 08 15 BI _ 05 B9 B11 B13 815 817 B19 821 B23 ENO VIEW E 1 1 2 ji 42 pas ck la 2 p27 51 55 3 paz 82 02 406 sr yA E i y 4 83 B4 Note ALL diodes are 1N5818 Release Battery B1 BB System Battery BB B24 2 parallel stacks of 4 ea Lithium DD cells 8 parallel stacks of 2 ea Lithium DD cells Voltage at F1 amp F2 14 4Vde Voltage at F4 FS F6 F7 F8 F9 F1 7 2Vdc Maximum total capacity 60 Ampere hours 8 14 4Vdc Maximum total capacity 240 Ampere hours 8 7 2Vdc For capacity 180 Ampere hours omit B21 B24 For capacity 120 Ampere hours omit B9 810 B19 B24 Figure 6 1 IES Model 6 2 Lithium Battery Pack for 17 Sphere 6 2 INVERTED ECHO SOUNDER MODEL 6 2 6 2 PERSISTOR COMPUTER MODULE amp MEMORY CARD All scheduling measurement data processing and storage functions of the Model 6 2 IES are controlled by the Persistor CF1 computer module manufactured by Peripheral Issues Inc of Falmouth MA USA See their web site at www persistor com The data file management and memory card s
161. sing is sealed connect RS 232 cable p n 51 06 to the external communications connector shown below RESET the IES by disconnecting and then reconnecting the external ON OFF plug and follow the prompts to the IES Main Menu A diagram of the through the glass control cable is shown in Figure 2 2 RELEASE To IES Connector J3 end view EXTERNAL ON OFF SWITCH end view 3 IES COMMON EXTERNAL RS 232 COMMON dub COMMUNICATIONS rj CABLE 2 end view Figure 2 2 IES Model 6 2 Through the Glass Communications and Control Cable 2 4 INVERTED ECHO SOUNDER MODEL 6 2 2 2 22 RESET Sequence For those who want to know the details a flow chart of the power ON or RESET function is shown in Figure 2 3 The most important details are listed below Pressing the RESET button or power cycling OFF ON restarts the model 6 2 IES Listen or watch the PC screen for for a single ping that indicates the IES has begun its initial start up tests If a communications cable is attached the user has 5 seconds to press the lt space gt key to enter the menu mode If no lt space gt key is detected the IES will check the battery voltages and currents verify that there is enough memory to store data until the auto release date and then 5 30 seconds after the 1 ping transmit two pings and display ping twice on the computer screen to indicate that the IES has entered the data a
162. t Remember orient the IES with transducer UP CHAPTER 3 ADVANCED PLANNING amp PREDEPLOYMENT CHECKS 3 9 3 7 ACOUSTIC OUTPUT vs DEPTH CONSIDERATIONS Unlike the Model 6 1C the IES Model 6 2 can adjust its acoustic output power over the full deployment depth range without hardware modification there are no hardware jumpers to change when changing deployment depth The IES model 6 2 adjusts the output power as a function of depth entered by the user using the following formula Output dB 170 depth m 500 x 0 00491 The resultant echo and various acoustic levels vs depth are shown in Figure 3 2 IES ECHO DETECT LEVELS vs DEPTH 200 aS ee 180 7 4 transmitted source level using full sonar equation 160 4 140 4 120 surface echo sl rl 2a d 20 log 2d rr 100 _ a echo detect threshold 40 kt wind amp rain noise Bc 60 10 log bw a d EN E fish or scatt layer si ts a 2d 40 log d 60 10 kt wind noise iz m _ 1 40 10 log bw a d o ER absorption loss a 1 1 dB 1000m ic c 40r source level sl 170 to 197 dB EMIL c depth d 400 to 6000 m as surface refl loss rl 6 dB target strength ts 20 20 0 dB 8 ECHOS amp OTHER ACOUSTIC LEVELS dB 20 4 10 10 10 DEPTH m Figure 3 2 Echo and Noise Levels vs Depth 3 10 INVERTED ECHO SOUNDER MODEL 6 2 3 8 SETTING THE AUTO RELEASE DATE amp TIME The auto
163. ta to year day count travel time in seconds modulo 0 500 pressure in 10Pa modulo 2000 and saves the raw timing results in file c matlab telemetry data Cfile dat or PFile dat for PIES If the data look reasonable let the receiver program run until the entire IES telem dat file is transmitted If the data do NOT look good wait for the one minute pause in the telemetry transmission every 15 minutes or 27 records 34 for PIES and send the CLEAR command with the DS 7000 to halt the telemetry transmission Evaluate potential problems DS 7000 gain adjustment receiver hydrophone depth ship noise make the adjustments and return to step 1 of this operation To adjust the gain of all six channels of the DS 7000 edit the CFilePDT m script file and change the variable gain one place at the top of the file The default at this date 2 11 03 is gain 3 for all six channels Change the names of the Pfile dat or Cfile dat files to include the PIES serial number and move them to an appropriately named directory CHAPTER 10 ADVANCED ACOUSTIC TELEMETRY 10 11 Additional Telemetry Operations Notes 10 11 1 Telemetry Session Interrupt Saving the File Pointer It may become necessary to interrupt a file telemetry session before all of the desired data have been received This may occur because the ship has drifted too far from the site for reliable reception the acoustic receiver needs adjusting or weather relate
164. ted and the entire mission configuration is saved see selection S or G D Enter water depth lockout time and output power level displays the current value of estimated water depth in meters and prompts the user for a new value For no change in depth value press lt enter gt Water depth is the primary consideration that determines the lockout time and the output power level After estimating the depth at the deployment site the IES will suggest the proper lockout time and output power level To accept these values press lt enter gt after each current value is displayed See Chapter 1 5 for some further discussion of travel time measurements The water depth is solicited so that the IES instrument can advise the user of a suitable lockout value The user can override these suggestions by entering other values as long as they do not violate the basic measurement principles e g you cannot enter a lockout time that would block the sea surface echo The selection of lockout time and output power level is critical to the mission success and is dependent upon the depth at the deployment site The IES will not operate usefully if deployed in water shallower than estimated here The lockout time and output power level will not be saved in non volatile memory until the SAVE or GO menu selection S or G is made see below CHAPTER 2_GETTING STARTED CONFIGURING THE IES 2 9 E Enter auto release date and hour displays the current automa
165. telemetry functions with the CLEAR command before departing the site If you do forget to disable these functions the model 6 2 IES will disable them at midnight by the IES clock Note Software is available to convert an inexpensive laptop computer into a line scan recorder that works well for these acoustic tracking operations It is available from Chaplin Marine Instruments Sherborn MA 01770 USA Inquire about TRAX 4 software at their web site www cmari com 8 4 INVERTED ECHO SOUNDER MODEL 6 2 8 1 4 Acoustic Telemetry Operations The Model 6 1 is equipped with an acoustic telemetry scheme to verify the correct operation of its measurement systems immediately after it is deployed A similar scheme is used to collect data from the IES in lieu of recovering the instrument 1 during a deployment To use the IES acoustic telemetry option the following additional equipment and software are required gt Benthos Inc Model DS 7000 Acoustic Transceiver Deck Box configured for 4 channels IES amp PIES applications or 8 channels C PIES application gt Model DS 7000 must also have special firmware installed to transmit IES codes Contact Benthos Inc Falmouth MA USA for pricing gt The shipboard telemetry receiver uses software from The MathWorks Matlab 7 for Windows to interface with the DS 7000 deck box and display the incoming data Matlab programs to implement IES acoustic telemetry are available from URI GS
166. tery is near depletion the IES will sense the impending failure and shut down the data acquisition functions including the auto release timer The release battery will support routine acoustic command system recovery operations WARNING The selection of an auto release date and time is also influenced by the memory card capacity Without sufficient data capacity to get to the auto release date the IES will not allow a mission to start See Chapter 4 4 for more details CHAPTER 3 ADVANCED PLANNING amp PREDEPLOYMENT CHECKS 3 11 3 9 DEPLOYMENT CHECKLIST About an hour before deployment attach the communications cable to the IES turn ON the Hyperterminal capture mode and confirm the proper setup and operations as follows A Turn ON IES and go to Self Test Menu at Main Menu record the IES version date 1 View engineering data enter H Clock Battery gt 3 0Vdc Release Battery Drain lt 1 3mA gt System Battery Drain lt 50mA Acoustic Driver any value from 0 17 Vdc Release Battery gt 14 3Vdc System Battery gt 6 8 Vdc Internal temperature ambient temp Travel time test enter B use the 12 0kHz echo box and speaker to simulate echo Pressure amp Temperature test enter D confirm barometric press and room temp Output power test enter F record power level before deployment Release Relay test enter J with acoustic transducer pointing down radio flasher O
167. that signifies that the IES is ready to be launched then remove the communications cable and install the yellow communications plug 3 Secure the locking rings on the red amp yellow cable ends and push them inside the hard hat 4 During the remaining time prior to launch listen confirm the proper timing of the travel time measurements 5 See Chapter 8 for IES launch instructions 3 12 INVERTED ECHO SOUNDER MODEL 6 2 3 9 1 Important Checklist Notes e Remember that ACS responses are blocked during TT measurements be aware of IES time e Without a computer attached an accurate stopwatch chronometer is a very handy tool to monitor the IES activities Once the IES clock is set the acoustic signals will occur at precise times e IES responses to ACS commands will be at reduced power until the release relay is latched IES will NOT START unless it is RESET power cycled OFF ON or you exit the menu mode through the Setup Menu selection G Do not simply unplug the communications cable while in menu mode the instrument will not start e Ifyoudoa SAVE selection S in the Setup Menu and then turn the IES OFF a new set of data files will be created for your new configuration when your turn the IES back ON This is an acceptable way of starting an IES mission but you don t get to review the mission configuration before the mission starts e Offloading data files is outlined in the Chapter 4 1 You MUST us
168. tic release date and hour and prompts the user for a change This is the date and hour when the IES will release its anchor and rise to the sea surface without user intervention Data acquisition will stop and the IES will initiate a 4 second acoustic beacon The IES will not start the data acquisition mission unless the auto release date and hour are in the future AND there is enough data storage available on the memory card to operate until the auto release date Note The auto release is not the primary method of IES recovery An acoustic release is the routine method The auto release is a back up in case the acoustic release system should fail F Enable disable the acoustic data telemetry file Enables the daily processing of data for transmission via the telemetry link If the file is enabled the IES will process the travel time pressure and any other sensor data at the end of each day See Chapter 10 for a description of the TELEM DAT file and the various formats associated with each sensor suite H Enter a mission statement the user is prompted to enter a line of text as a mission statement To assist in data record keeping a line of text mission statement is written to the system log file when data acquisition starts This might be a site location a project name etc End the statement 80 characters maximum by pressing the lt enter gt key The mission statement does not get saved with the operating parameters so it is valid
169. tom of board can be configured for 30 or 60 Ampere hours 1 or 2 stacks with both configurations center of gravity being in the center of the board 3 3 2 De Passivating the Battery Pack Lithium batteries are affected by a phenomenon known as passivation Passivation is a film of lithium chloride LiCl that forms on the surface of the lithium anode and it serves to protect the lithium from discharging on its own when the load is removed from the cell The film of LiCl which is essentially a high resistance layer between the electrodes is primarily responsible for the long shelf life gt 10 years of lithium cells Passivation may cause voltage delay after a load is placed on the cell When the cell is loaded the high resistance of the passivation layer causes the voltage to dip The discharge reaction slowly removes the passivation layer thereby lowering the internal resistance of the cell This in turn causes the cell s voltage to reach a peak value which should remain steady if other discharge conditions do not change If the load increases after the cell s voltage stabilizes then it may dip again until the passivation layer is sufficiently removed Battery cells that have been on the shelf for many weeks or exposed to high temperature may cause the IES supply voltage to dip below the minimum requirement and cause the instrument to reset Since it is impossible to know how long new cells have sat without a load since their manufacture
170. transfer modes 10 7 Burst Telemetry Report Burst telemetry is primarily used as a diagnostic tool to verify that the IES hardware is operating properly after it has been deployed on the sea floor Burst telemetry reports full data values poor signal resolution but no ambiguity in the value of the measurement For fast evaluation of IES performance the burst telemetry receiver software converts the travel time and the pressure data as meters of depth For example if the travel time measurement schedule is 4 pings every 10 minutes the burst telemetry if it has been activated with the ACS command will report the four travel time values accurate to 1 meter of depth The most recent pressure measurement will be converted to depth in meters and the same value will be reported in all four PDT burst telemetry frames If the pressure option is not enabled the pressure value reported will be zero in all four frames sample HEADING range 1 25 range 0 400 1 count 80msec 133 degree 1 msec PRESSURE TAU SPEED MARKER range 0 7000000 decaPascal 0 9 seconds range 0 250cm sec MARKER 500 decaPascal 1msec 1 5msec tau 1msec 0833cm sec 1msec Y Y 11 5kHz 12 0kHz 12 5kHz 10 5kHz 13 0kHz A 14 sec gt 6 gt 2sec lt 3 gt 3 sec A 10 0kHz 11 0kHz 60 Note 0 25 second quiet zone between data words 0 lt PIES record frame
171. try data processing is enabled see Mission Setup Menu selection H If enabled there is only one telemetry data file A properly equipped surface ship can command the moored IES to transmit this file via the acoustic telemetry link see Chapter 10 for acoustic telemetry details The system log file contains records of various lengths and formats with information intended as a diagnostic tool in case of system malfunction This file is not intended to be used by time series data processing tools but as a time stamped record of routine and unusual events A detailed description of system log records is given below The system log file contains information that applies to a time period inclusive of all the data files on the memory card no more no less In other words the user cannot partially erase the memory card it s all or nothing Each time a new data file is created the filename index is incremented and a meta data header record is written which provides the information required to process the data in the file see the meta data record descriptions below There is only one meta data header record per data file and it is always the first record The subsequent data records in the file have identical formats suitable for time series processing as described below CHAPTER 4 DATA RECOVERY amp ANALYSIS 4 3 4 2 2 Data File Creation and File Names The Model 6 2 IES automatically creates and names all files on the compact flash c
172. ture However the user has the option to modify an IES ACS system change the jumpers on the circuit board see Figure 2 1 so that the instrument will not detect codes intended for IESs at nearby deployment sites especially the release command The following example outlines how to set up the IES and either the EdgeTech 8011A or the Benthos DS 7000 deck box for a set of codes Assume the user has chosen the following ACS commands for a particular IES e TELEMETRY CODE 1 e TRANSPOND CODE 2 e BEACON CODE 3 e RELEASE CODE 52 First code the IES circuit board Figure 2 1 using the weights in Table 5 1 to set the hexadecimal values of each chosen command the proper settings on JP1 thru JP4 are command code 1 2 3 52 jumper installed 02NO 12 YES 01 10 11 110100 circuit board reference JP4 JP3 JP2 circuit board label TELEM XPND BEACON RELEASE After programming these commands onto the IES circuit board the corresponding binary equivalents from the tables above must be encoded into the acoustic command deck box follow these steps for the appropriate deck unit EdgeTech 8011A Deck Box Setup Go to Command Setup menu Choose Custom Cmd Setup 2 gt Choose a custom command number lt 0 9 gt Choose a Bit encoded Custom Command 1 Set 0 freq 12500 Hz Set 1 freq 12000 Hz Set Bit ON time 22 msec Set OFF time 228 msec lt enter gt Enter the 20 bit binary code from Table 5 2
173. ubsystems are integral parts of the CFlmodule The CF1 mounts on the IES circuit board with a simple connector so that any problems traceable to the computer module can be resolved with a CF1 module replacement 6 3 RECOVERY AIDS the RELOC Module In addition to the acoustic command subsystem which controls the mechanical release mechanism and the relocation and recovery acoustic signals there is an optional radio flasher module RELOC which mounts inside the glass sphere to aid in recovery after the IES has reached the surface The RELOC module contains a high intensity 1 million candlepower xenon flasher flash at 1Hz and a VHF radio beacon Channel 77 that transmits a CW pulse about every 4 seconds The flash can be seen through the white translucent hard hat of the IES and the radio can transmit 100mWatts through the glass amp hard hat radio range varies with sea state from to 2 miles Radio direction finder RDF receivers are available to indicate relative bearing e g those made by Taiyo see web site www taiyomusen co jp and NovaTech Designs Ltd see web site www novatechdesigns com Also see Chapter 8 3 3 RELOC module is activated when the IES RELEASE relay is activated but uses an additional tilt switch to keep the radio flasher OFF until the IES turns over acoustic transducer facing DOWN this will be the orientation of the IES when it is on the sea surface Once on the surface the RELOC module will co
174. ure 1 1 in Chapter 1 to see the proper positioning of the elements in a properly assembled IES General precautions for sealing glass instrument housings are provided in a separate document provided by Nautilus Marine Service Bremen Germany See Appendix A 1 Specific instructions for sealing the IES model 6 2 are provided in this chapter The assembly procedure is divided into two parts 1 sealing the electronics in the glass sphere and 2 installing the sphere in the hard hat First some notes about the use of glass instrument housings 7 1 GLASS INSTRUMENT HOUSINGS Although new users of this type of instrument housing are initially apprehensive about handling glass they usually become advocates because most of the corrosion issues concerning undersea equipment disappear The most important advice we can offer after hundreds of successful deployments is the need for cleanliness during the seal up process Clean your hands with rubbing alcohol before cleaning the glass mating surfaces and the o rings This is very important Once your fingers are clean of grease they become excellent detectors of any dirt or grease on the glass gently slide your clean finger over the glass mating surfaces The glass itself should be cleaned with a residue free solvent such as toluene Make sure that you have adequate ventilation when using strong solvents the fumes are hazardous to your health The preferred method of sealing the sphere is to remove most
175. ures or to add some custom functions for a specific project IES firmware upgrades will be sent to you in the form of a IESe APP file on a floppy disk The will indicate a year month and day such as IESel_9_11 APP for September 11 2001 This file will be transferred to the IES using a communications program from your IES User s Software Disk Motocross exe as follows 1 Run MotoCross exe it s on your IES User s Disk and connect to the IES at 57600 baud see MotoCross File menu Communications Settings to change baud rate of PC See Chapter 2 for IES communications details RESET or power cycle the IES press the lt space gt bar and proceed to the Main Menu Select P this is a hidden menu selection to get to the PicoDOS mode prompt c gt From the MotoCross Toolbar Transfer Menu select Load CPM68K Inthe MotoCross window find amp select the new firmware file that was sent to you named TESe APP After the new firmware is in place the transfer window will close and appears at the gt prompt press lt enter gt and the new IES application will start 7 Be sure to verify that the new firmware is in place by examining the IES banner header that is displayed immediately after RESET The IES version date should match that in the documentation shipped with the new firmware same year month and day as in the filename IESe APP CA gt wm INVERTED ECHO SOUN
176. urned OFF after the mission was started and the data files were created but before any data were collected days or months later Looking at the time stamps of the OPR and RES records in the system log file should help to reconstruct the ON OFF time line of the IES 4 3 5 Pressure and Temperature Raw Data File The pressure and temperature raw data F file is identical in format to that of the P file described above the meta data record is the same except it has an F instead of a P as the first character and the relationship of the measurements to the time stamp is the same The only difference is in the units of the data P file pressure and temperature measurement pairs are in units of 10uPa 1 10millibar and 10 degree respectively and the P file measurements are in units of 10 Hertz See Example 1 Example 1 F 2001 11 21 12 48 26 039 87087 10 5 842375 4036 615 2110 00 0 00 47948 39 3713 318 162670 80 0 037720 0 00 30 28409 2 333273 60 53492 71 7080 0 00 0 00 0 00 279540 00 00 00 00 00 33036868 171304816 279541 33036824 171305040 33036730 171304608 33036528 171303136 33036204 171300336 33035790 171296080 33035296 171290512 279542 33034742 171283776 33034156 171276224 33033562 171268224 33032980 171260176 33032426 171252336 33031898 171244880 279543 33031406 171237904 33030950 171231472 33030528 171225568 33030136 171220176 33029778 171215280 33029454 171210864 279544
177. using 0 amp 1 keys lt enter gt Choose guarded for RELEASE command not guarded for others Return to Command mode and enter the custom cmd 0 9 Set the output level and use lt enter gt again to send the command Set the deck box receive frequency at 12 00kHz For our example the binary codes entered in the deck box are TELEM 1 Custom command 1 gt 1 1100 0100 0 1 0010 0100 0 XPND 2 Custom command 2 gt 1 1010 1000 0 1 0110 1000 0 BEACON 3 Custom command 3 gt 111100000 0 1 0001 0000 0 RELEASE 52 Custom command 4 gt 1 0001 1001 0 1 1001 1001 0 IMPORTANT Allow at least 15 seconds between command transmissions Recommendation Attach a label to the display of the deck box that matches the custom command number with its IES serial number and command function CHAPTER 5 ACOUSTIC COMMAND SUBSYSTEM ACS 5 5 Benthos DS 7000 Deck Box Setup e press POWER and verify that the display shows BENTHOS DS7000 ES 7331 A 500 114 1 41 only deck sets with these firmware codes will work with URI IES units Set the RX FREQ 12 0 kHz press MODE SELECT until ID URI is in AUX 3 display window press AUX 2 scroll arrows until the desired URI code is displayed see Table 5 2 press SEND COMMAND SINGLE to transmit the URI IES command For our example the codes entered in the AUX 2 window of the deck box are TELEM 1 AUX 2 gt 65 XPND 2 AUX 2 gt 70 BEACON 3 AUX 2 gt 75 RELEASE 52 AUX 2 gt 52
178. ustic deck unit to send the appropriate ACS TELEM command to the IES Verify that the IES replies with the standard two ping response see IES User s Manual Chapter 5 Connect the DS 7000 serial cable to the port of the receiver laptop computer Switch the DS 7000 to REMOTE mode Using the Windows Explorer program delete the Cfile dat or Pfile dat data files if they exist in c matlab telemetry data Start Matlab 6 release 13 or above From the c matlab telemetry directory run the CFilePDT m or PFilePDT m program This will initialize the DS 7000 and the computer as a telemetry file data receiver Watch the DS 7000 display change as the channels are set up When the DS 7000 deck unit has completed initialization the program display will have stopped at the Waiting for marker 10 0 or 11 0kHz line The receiving program will remain at this point until the IES has finished its travel time measurement burst pressure measurement if scheduled and begins to transmit the data in the IES telem dat file Observe the Matlab command window it should step through the detection of the six different receiver frequencies 11 0 11 5 12 0 and 12 5kHz and loop to the next record frame again waiting for a 11 0kHz marker pulse The received data will be plotted in a Matlab graphics window Evaluate the data received 1 e is the waveform smooth are the data changing appropriately This program converts the incoming da
179. was detected gt The hour value on the first travel time data record corresponds to the first hour of data collection However it may or may not be an hour of the day stamped in the meta data record because the IES may have been turned OFF after the mission was started and the data files and meta records were created but before any data were actually collected Looking at the time stamps of the OPR and RES records in the system log file should help to reconstruct the ON OFF time line of the IES 48 INVERTED ECHO SOUNDER MODEL 6 2 4 3 4 Pressure and Temperature Data File The pressure and temperature data file P _XX dat will begin with this meta data record P yyyy mm dd hh mm ss IES s n Paros s n PTint Paros coefficients and is followed by these pressure and temperature data records hour P1 T1 P2 T2 P6 T6 Definition of terms P This record is the first record of the pressure and temperature data file and contains a time stamp in calendar format the IES instrument serial number IES s n the Paros serial number Paros s n the pressure and temperature measurement interval PTint in minutes Paros coefficients A list of the fourteen Paroscientific pressure sensor conversion coefficients in this order Up Yi Y2 Ci Di D2 Ti Ta T5 Tzero Refer to Chapter 3 5 and Appendix B to see how these coefficients are applied by the IES to calculate

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