Webb Research Corporation
Contents
1. 19 amp 20 Down time two in hours 21 Ascend time one in hours 22 Ascend time two in hours 23 amp 24 park pressure in counts 25 Park piston position in counts 26 Depth correction factor in counts 27 Storage piston position P4 in counts 28 Fully extended piston position P5 in counts 29 Month software version number in decimal 30 Day software version number in decimal 31 Year software version number in decimal Flag 2 byte 1 Deep profile Flag 1 byte 1 Trip interval time 2 Pressure reached zero 2 Profile in progress 3 25 minute Next Pressure timeout 3 Timer done 4 piston fully extended before surface 4 UP DOWN 5 Ascend time out 5 Data entry error 6 Test message at turn on 6 Measure battery 7 Six hour surface message 7 Piston motor running 8 Seabird String length error 8 Negative SBE no 11 Test message 2 Byte 01 CRC described in section C 02 message number 02 03 Message block number begins as 1 and increments by one for every ARGOS message 04 amp 05 Serial number identifies the controller board number This may not be the same as instrument number 06 amp 07 amp 08 Time from start up HR MIN SEC 09 Flag 2 Byte 10 amp 11 Current pressure in bar 12 Battery voltage 13 Current Bladder pressure in counts 14 Flag 1 Byte 15 Park pressure least significant byte only2. END IF END SUB 18 Appendix C Surface arrival time and total surface time Some users may wish to determine surface arrival time and total surface time in order to calculate drift vectors Although each 31 byte message is time stamped by ARGOS there may not be a satellite in view when the float surfaces When the float surfaces ie detects surface pressure recorded before last descent it will begin ARGOS telemetry Messages are transmitted in numerical order starting with message no 1 When all messages have been transmitted the cycle starts again at message no 1 Elapsed time since surfacing Te Te m 1 n r Where m message block number byte 03 of message 01 n total number of messages to transmit profile r repetition rate Total number of messages n is described in section IV b or may be determined from the ARGOS data Note n may be less than specified in user manual if the float is operating in shallow water causing reduced profile length Repetition rate r is the time interval between ARGOS transmissions This value can be determined from section V or from the ARGOS data Approximate time of surfacing Subtracting Te from the ARGOS time stamp can determine approximate time of surfacing Example Below is message 01 in DS format 2001 11 02 22 47 54 1 CF 01 05 02 AF 02 2F 00 85 01 01 01 16 92 17 19 9E 94 01 AD 85 09 1F 48 97 9B 00 46 62 24 0E z message block number b
3. 16 park piston position 17 depth correction factor 18 Storage piston position 19 Full Piston position 20 OK Vacuum count 21 Max Air Bladder Pressure 22 amp 23 profile 1 pressure 24 profile 1 piston position 25 deep profile cycle count 26 amp 27 profile 2 pressure 28 profile 2 piston position 29 Month software version number in decimal 30 Day software version number in decimal 31 Year software version number in decimal 12 F Telemetry error checking CRC Because ARGOS data contains transmission errors the first byte of each message contains an error checking value This value is a Cyclic Redundancy Check CRC and is calculated as a function of the message content bytes 2 to 32 For each message calculate a CRC value Compare the calculated CRC to the transmitted CRC byte no 2 Ifthe calculated and transmitted CRC values are not equal the message has been corrupted and should be deleted before further data processing Appendix B lists a sample program in BASIC to calculate the CRC value for a message This program can be provided upon request in Basic Fortran or C G Conversion from hexadecimal to useful units The pressure is measured every 6 seconds Temperature salinity and pressure are measured and stored at each point in the depth table Two hex bytes are stored for each sensor The decimal numbers from the STD sensors are c
4. Below is a list of what each bit in each byte signifies bit Flag 2 byte 1 Deep profile 2 Pressure reached zero 3 25 minute NextP timeout 4 Piston fully extended 5 Ascend timed out 6 Test message at turn on 7 Six hour surface message 8 Seabird string length error bit Flag 1 byte 1 Trip interval time 2 Profile in progress 3 Timer done 2 min bladder deflate time 4 UP DOWN 5 Arithmetic round up 6 Measure battery while pumping 7 Piston motor running 8 Negative SBE number The flag bytes are transmitted as two hex characters with four bits of information encoded in each character Each hex character can have one of 16 different values as shown in the following table 1 0 0000 10 9 1001 2 1 0001 11 A 1010 3 2 0010 12 B 1011 4 3 0011 13 C 1100 5 4 0100 14 D 1101 6 5 0101 15 E 1110 7 6 0110 16 F 1111 8 7 Olll 9 8 1000 Bit 8 is the most significant bit and bit 1 is the least significant bit in the byte 16 As an example if a deep profile ended with the piston fully extended and ascend had timed out then bits 1 4 and 5 would be set in the termination byte This binary pattern 0001 1001 would be transmitted as the two hex characters 19 As another example if a regular profile ended with the piston fully extended and the 25 minute next pressure had timed out then bits 3 and 4 would be set in the termination byte This binary pattern 0000 1100 would be transmitted as the two hex characters 0C 17 Appen
5. avoid pumping the cell dry and or ingesting surface oil slicks The shallowest profile point is taken at either 4 dbar or at the last recorded surface pressure plus 5 dbar whichever value is larger The number of sample points ie profile length will be reduced if the float is unable to reach intended depth for any reason Bottom pressure may change due to several causes such variation of insitu density internal waves float grounding in shallows change of float mass etc APEX automatic depth adjustment will compensate in most but not all cases 10 E TEST MESSAGE FORMAT The test message is sent whenever an I2 command is given the six transmissions during the startup cycle and during the six hour surface mode period prior to the first dive Each test message has 31 Bytes in hex unless otherwise noted with the following format Test message 1 Byte 01 CRC described in section C 02 message number 01 03 Message block number begins as 1 and increments by one for every ARGOS message 04 amp 05 Serial number identifies the controller board number This may not be the same as instrument number 06 amp 07 amp 08 Time from start up HR MIN SEC 09 Flag 2 Byte 10 amp 11 Present CTD pressure in bar 12 Battery voltage 13 Present bladder pressure in counts 14 Flag 1 Byte 15 Up time one in hours 16 Up time two in hours 17 amp 18 Down time one in hours
6. BE ARGOS ID number 030 seconds repetition rate UP DOWN ASCEND in hours Ul U2 DI D2 Til T2 014 008 106 112 009 006 0350 d bar park pressure P1 115 park piston position P2 012 ascent rate correction P3 100 storage piston position P4 248 piston full extension P5 2000 d bar profile pressure P6 025 profile piston position P7 0700 d bar PFL 2 pressure PF 075 PFL 2 piston position PG 115 OK vacuum count P8 149 air bladder pressure PB 010 deep profile count PD 025 Initial piston extension 006 hours sink to depth one 003 hours sink to depth two INSTRUMENT 3796 APEX version 05 18 04 sn 3728 019 064 38421C7 ARGOS ID number 028 seconds repetition rate UP DOWN ASCEND in hours Ul U2 Di D2 Til T2 014 008 106 112 009 006 0350 d bar park pressure P1 115 park piston position P2 012 ascent rate correction P3 100 storage piston position P4 249 piston full extension P5 2000 d bar profile pressure P6 025 profile piston position P7 0700 d bar PFL 2 pressure PF 075 PFL 2 piston position PG 115 OK vacuum count P8 149 air bladder pressure PB 010 deep profile count PD 025 Initial piston extension 006 hours sink to depth one 003 hours sink to depth two INSTRUMENT 3797 APEX version 05 18 04 sn 3729 019 064 38421D4 ARGOS ID number 032 seconds repetition rate UP DOWN ASCEND in hours Ul U2 Di D2 TI T2 014 008 106 112 009 006 0350 d bar park pressure P1 115 park piston position P2 012 ascent rate c
7. Webb Research Corporation 82 Technology Park Drive E Falmouth MA 02536 4441 508 548 2077 FAX 508 540 1686 USER MANUAL APEX SBE PROFILER Serial 3795 3798 REV DATE 01 29 08 WRC Job no 1308 INNOVA Software Rev 05 18 04 Type Park and Profile x2 with 28 bit ID IT ALKALINE BATTERY WARNING ssssessssscsisvscserssssessusoesossosssvossosvossesessvoessusossosorss e sovossesoosos sssrses rsssse TI RESET AND SELF TEST ccssscsssssssscssressscssscssrssssecssnescsscsssceasssssssssescsssesscsasssesassssecssnescescsscssasessenes HI DEPLOYMENT E AEE TA T IV PARK AND PROFILE X2 FEATURE eseesseseeserseeeesoeseeeoeseeeerseecesoeeeeeoeseeeoeseeoesoeeereoesereorseeeesoeeeeeeeeeee Ve ARGOS DADA sos csasceis sostautisassonts lt oasessa secede sosasvostesasunsse cveuodsesssutestsescssvecespesus coscesuesoasuebtsosssevesese seasosseasesaceuesee SERVICE ARGOS PARAMETERS cnn nenene e aE SEE AE A EAT ESE TSS DATA FORMAT NO 19 FOR 28 BIT ARGOS ID 00 ceccccecceessesseeeseeeeeesecesecaecaecnaecaeecaeeeaeeseeeneeeerenerens THIMIES PAMMIPS E cate S240 Pia nd Sued ag a tone Me tens oe E Pen Ud Marsa ot E ects ce hie tan T DEPTH TABLE NO Gf Sowcvcss cisestte rein nsi eee ae eee ence hein e ite ie TEST MESSAGE FORMAT sz ccs sedevecedie ds Gaces covets aks ook deacvec N E E deduce A A E cesta E N TELEMETRY ERROR CHECKING CRO Jroa anii E Vass eine eee Maelo le R CONVERSION FROM HEXADECIMAL TO USEFUL UNITS cssssesssecs
8. dded a catalyst inside of these instruments to recombine Hydrogen and Oxygen into H2O and the instrument has been designed to relieve excessive internal pressure buildup by having the upper end cap release Webb Research Corp knows of no way to completely eliminate this hazard The user is warned and must accept and deal with this risk in order to use this instrument safely as so provided Personnel with knowledge and training to deal with this risk should seal or operate the instrument Webb Research Corp disclaims liability for any consequences of combustion or explosion Il Reset and Self Test Profilers are shipped to the deployment site in Hibernate mode Shortly before deployment reset the profiler by passing a magnet over the marked location on the pressure case The profiler will run a self test transmit for 6 hours with the bladder extended and then begin its pre programmed mission The six ARGOS transmissions during self test and the transmissions during the initial 6 hour period contain data about the instrument and are outlined in V ARGOS DATA part C TEST MESSAGE FORMAT Procedure 1 Secure float in horizontal position using foam cradles from crate IMPORTANT Remove plastic bag and three plugs from CTD sensor if they J have not already been i removed 3 o gt 2 2 Minimum temperature 2 deg C If necessary let float warm indoors before proceding 3 Carefully remove black rubber plu
9. dix B CRC Algorithm in BASIC for 28 bit Id Below is a sample program in BASIC to calculate the CRC value for a message This program can be provided upon request in Basic Fortran or C DECLARE FUNCTION CRC IN AS INTEGER N AS INTEGER CRC routine to check data validity in ARGOS message Bathy Systems Inc RAFOS Float data transmission 3 December 1990 The Ist of 31 bytes in an ARGOS message is the CRC The function CRC will compute CRC for byte 2 through 31 Hasard is used for Random because Random is reserved by BASIC Stored as file CRC in C RAFOS RAF11 DECLARE SUB Hasard ByteN AS INTEGER DEFINT A Z DIM in 31 AS INTEGER RAF11F message number 08 HEX ID 11502 01 02 93 CRC is O K A d802075d87c64e15078187c64c 1 07b287 74a3007ce87c6483f07 fe87c246 N 31 FORI 1toN in I VAL amp H MIDS A 2 I 1 2 NEXT I PRINT in 1 CRCGnQ N FUNCTION CRC INQ AS INTEGER N AS INTEGER STATIC DIM ByteN as INTEGER I 2 ByteN in 2 DO CALL Hasard ByteN I I 1 ByteN ByteN XOR in D LOOP UNTIL I N CALL Hasard ByteN CRC ByteN END FUNCTION DEFINT A Z SUB Hasard ByteN AS INTEGER STATIC x 0 IF ByteN 0 THEN ByteN 127 EXIT SUB IF ByteN AND 1 1 THEN x x 1 IF ByteN AND 4 4 THEN x x 1 IF ByteN AND 8 8 THEN x x 1 IF ByteN and 16 16 THEN x x 1 IF X AND 1 1 THEN ByteN INT ByteN 2 128 ELSE ByteN INT ByteN 2
10. e the antenna Do not leave the rope with the instrument release one end and retrieve the rope The float will remain on the surface until the 6 hour interval has expired PARK and PROFILE x2 Feature The optional park and profile feature allows the float to drift i e park at an intermediate depth then descend to a greater depth before making profile measurements during ascent to the surface The park and profile x2 feature allows use of two profile depths in a programmed sequence Terminology PARK intermediate depth at which the float drifts menu parameter P1 PROFILE deeper depth to which the float descends before profiling up parameters P6 and PF DOWN time spent during descent and at park depth parameters D1 and D2 UP time includes ascent and time at surface parameters U1 and U2 Cycle timing UP and DOWN times are defined by parameters U1 and D1 for profile pressure P6 parameters U2 and D2 for profile pressure PF The sequence of profile pressures is set by parameter PD For example if PD is set to 10 profile pressure P6 occurs during cycles 1 11 21 profile pressure PF occurs during cycles 2 10 12 20 Ascent rate approximately 08 meters per second Total Up time is typically set to 12 to 20 hours increasing proportional to depth and amount of data to be transmitted per profile Another factor is deployment location due to the polar orbit of ARGOS the number of passes per day increases a
11. escends to target depth 21 amp 22 Park salinity sampled just before instrument descends to target depth 23 amp 24 Park pressure sampled just before instrument descends to target depth 25 Park battery voltage no load 26 Park battery current 27 amp 28 Surface Pressure as recorded just before last descent with an offset of 5 dbar 29 Internal vacuum measure in counts approximately 101 counts 30 Park piston position 31 SBE pump Voltage Format for message number 2 Byte O01CRC described in section C 02 Message number 03 amp 04 time of profile start 05 amp 06 first profile temperature 07 amp 08 first profile salinity 09 amp 10 first profile pressure 11 to 31 6 bytes in sequence and continuing in the next message 2 bytes temperature 2 bytes salinity 2 bytes pressure Note some byte pairs will split between messages Format for message number 3 Byte 01CRC described in section C 02 Message number 03 31 temperature salinity pressure points per depth table Sampling continues as shown above per the depth table After the last data point in last message two bytes surface detect time will be followed by a Hex value of FF filing remaining bytes C Timestamps As mentioned above two timestamps are included The first timestamp bytes 03 amp 04 of message no 2 marks start of upcast profile The second timestamp 2 bytes preceded by the shallowest p
12. essage Total number of messages per profile is shown below Messages are transmitted in sequential order starting with 1 and incrementing by one for the data set 03 Message block number begins as 1 and increments by one for every ARGOS message data set This combined with the ARGOS repetition rate section VI allows the user to track surface drift Byte 03 will roll over at 256 and will reset to 1 on each new profile 04 amp 05 Serial number identifies the controller board number This may not be the same as instrument number 06 Profile number begins with 1 and increases by one for every float ascent 07 Profile length is the number of six byte STD measurements in the profile Total number of bytes of STD data from each profile depends on the sampling strategy chosen 08 Profile termination flag byte 2 see section D 09 Piston position recorded as the instrument reaches the surface 10 Format Number identifier for message one type 11 Depth Table Number identifier for profile sampling depths 12 amp 13 Pump motor time in two second intervals multiply by 2 for seconds 14 Battery voltage at initial pump extension completion 15 Battery current at initial pump extension completion one count 13 mA 16 Profile 1 piston position park and profile floats only 17 Profile 2 piston position 18 Air bladder pressure measured in counts approximately 148 counts 19 amp 20 Park temperature sampled just before instrument d
13. g from bottom center of yellow cowing to verify bladder inflation per below Use fingers only tools may puncture bladder Be sure to replace plug before deployment Note it can be very difficult to replace plug when air bladder is fully inflated Replace plug during beginning of air bladder inflation Purpose of plug is to prevent silt entry if float contacts sea floor 4 Hold provided magnet at RESET position marked on for several seconds then remove magnet Note Magnetic switch must be activated held for at least one second to reset the instrument This is to provide a safety against accidental reset during transport Thus if the float does not respond as below the instrument was probably not reset 5 The air pump will operate for 1 second 6 The PTT will transmit 6 times at 6 second intervals Place ARGOS receiver beeper close to antenna to detect transmissions 7 The piston pump will begin to operate The piston will move to the retracted Storage Position if not already there pause 2 seconds and then move to full extension 8 The oil bladder will expand this should take 15 25 minutes 9 After the piston pump stops PTT will transmit at specified ARGOS rate 10 At every PTT transmission the air pump will turn on for 6 seconds until the air portion of the bladder has been inflated The pump should turn on 8 10 times 11 6 hours after reset transmissions will cease the bladder will deflate and the pis
14. nal VOS or aircraft deployment containers are used these must be kept dry and should be stored indoors only APPENDIX G Returning APEX for factory repair or refurbishment Contact WRC before returning APEX floats for repair or refurbishment All returns from outside USA please specify our import broker Logan International Airport Boston c o DHL Danzas Freight Forwarding Agents Phone 617 886 5605 FAX 617 241 5917 500 Rutherford Avenue Charlestown MA 02129 Note on shipping documents US MADE GOODS 21 APPENDIX G CTD Calibration and Ballasting records 22
15. onverted to hex for compression in the ARGOS transmission as follows Temperature 5 digits 1 milli degree resolution Salinity 5 digits 001 resolution Pressure 5 digits 10 cm resolution To convert the hex ARGOS message back to decimal numbers hex gt dec converted units Temperature 3EA6 gt 16038 16 038 C Temperature F58B gt 02677 2 677 C Salinity 8FDD gt 36829 36 829 Pressure 1D4C gt 7500 750 0 decibars Current 0A gt 10 130 mA Volts 99 gt 153 15 7 volts Voltage V counts 10 4 counts is in decimal number nominally 15 V and decreasing Current mA counts 13 counts is in decimal number Vacuum inHg counts 0 209 26 23 counts is in decimal number nominally 5 inHg Note regarding negative temperatures T C lt 0 Positive temperature range is 0 to 62 535C 0 to F447 hex Negative temperature range is 0 001 to 3 000C FFFF to F448 hex If hex value gt F448 then compute FFFF hex value Y Convert Y to decimal dec_Y dec Y 1 1000 1 degrees C The 5 most significant salinity digits are telemetered The 6 digit salinity number is rounded up and converted to hex 36 8286 rounds to 36 829 and converts to 8FDD 13 VI MISSIONS This section lists the parameters for each float covered by this manual The parameter listing appears when the float is RESET while connected to a terminal INSTRUMENT 3795 APEX version 05 18 04 sn 3727 019 064 38421
16. orrection P3 100 storage piston position P4 248 piston full extension P5 2000 d bar profile pressure P6 025 profile piston position P7 0700 d bar PFL 2 pressure PF 075 PFL 2 piston position PG 115 OK vacuum count P8 149 air bladder pressure PB 010 deep profile count PD 025 Initial piston extension 006 hours sink to depth one 003 hours sink to depth two INSTRUMENT 3798 APEX version 05 18 04 sn 3730 019 064 38421E1 ARGOS ID number 030 seconds repetition rate UP DOWN ASCEND in hours Ul U2 DI D2 Til T2 014 008 106 112 009 006 0350 d bar park pressure P1 115 park piston position P2 012 ascent rate correction P3 100 storage piston position P4 249 piston full extension P5 2000 d bar profile pressure P6 025 profile piston position P7 0700 d bar PFL 2 pressure PF 075 PFL 2 piston position PG 115 OK vacuum count P8 149 air bladder pressure PB 010 deep profile count PD 025 Initial piston extension 006 hours sink to depth one 003 hours sink to depth two 15 Appendix A Flag Byte Description Two memory bytes are used one bit at a time to store 16 different bits of program flow information Both of these bytes are telemetered in the test messages sent at startup and for the initial 6 hour surface period Only flag byte 2 is sent in the data messages as part of message number 1 Bit one is set for each deep profile and bit 8 is set each time the last SBE sensor value used an arithmetic round up
17. ressure value followed by FF filling remaining bytes of last message marks detection of surface pressure 5 db Each time count equals two seconds elapsed since the float was reset The clock resets to zero every 24 hours D Depth Table No 64 Sample Pressure Sample Pressure Sample Pressure Point dbar Point dbar Point dbar Bottom 1 2000 37 600 73 240 2 1950 38 590 74 230 3 1900 39 580 75 220 4 1850 40 570 76 210 5 1800 41 560 77 200 6 1750 42 550 78 190 7 1700 43 540 79 180 8 1650 44 530 80 170 9 1600 45 520 81 160 10 1550 46 510 82 150 11 1500 47 500 83 140 12 1450 48 490 84 130 13 1400 49 480 85 120 14 1350 50 470 86 110 15 1300 51 460 87 100 16 1250 52 450 88 95 17 1200 53 440 89 90 18 1150 54 430 90 85 19 1100 55 420 91 80 20 1050 56 410 92 75 21 1000 57 400 93 70 22 950 58 390 94 65 23 900 59 380 95 60 24 850 60 370 96 55 25 800 61 360 97 50 26 750 62 350 98 45 27 700 63 340 99 40 28 690 64 330 100 35 29 680 65 320 101 30 30 670 66 310 102 25 31 660 67 300 103 20 32 650 68 290 104 15 33 640 69 280 105 10 34 630 70 270 106 4 35 620 71 260 36 610 72 250 APEX records a profile during ascent ie upcast Pressure is measured every 6 seconds during ascent Whenever pressure is equal to or less than a value in the depth table a CTD sample is recorded The first i e deepest sample is taken at the first point in the depth table above bottom pressure The SeaBird CTD is not sampled at zero pressure to
18. ssceeseecsseceseeecsseeesseccaeeeeseecaeeeeseecsseeeeseeees VI MISSIONS cccsssssssssssscsssssssssssessssssessessssessessssessessssesecssssessassssessessssessesessesscsesseseasessaseesossessasenseseesers AMMOOWS APPENDIX A FLAG BYTE DESCRIPTION csssssssssssssssssessssssecssssscsssesssssssssnsesssessssssesesssssseesecsseees APPENDIX B CRC ALGORITHM IN BASIC FOR 28 BIT ID eseesseseeseeseeeesoeseeeoeseseorseeoeseseorseeoesoeeeesoesee APPENDIX C SURFACE ARRIVAL TIME AND TOTAL SURFACE TIME ccssccssssssssesceseeseeee APPENDIX D ARGOS ID FORMATS 28 BIT AND 20 BIT csscssssssssssscsssssssesesssesssesseseseneseseeseceseees APPENDIX E STORAGE CONDITIONS ccsscssscssesssesssecsscssensssnsesesssesssssssssscsscnsesssecssessesnsesssssseseseoeees APPENDIX G RETURNING APEX FOR FACTORY REPAIR OR REFURBISHMENT ccccssseees APPENDIX G CTD CALIBRATION AND BALLASTING RECORDS eesseseeserseeeesoesereoesereorseeoesoeeersoesee l ALKALINE BATTERY WARNING The profiler contains alkaline D cells There is a small but finite possibility that batteries of alkaline cells will release a combustible gas mixture This gas release generally is not evident when batteries are exposed to the atmosphere as the gases are dispersed and diluted to a safe level When the batteries are confined in a sealed instrument mechanism the gases can accumulate and an explosion is possible Webb Research Corp has a
19. t high latitudes DOWN time UP time D Surface E P Park T H Profile TIME SCHEMATIC Depth versus Time Parameter PD determines the frequency of deep profiles Schematic examples PD 2 vet deep profile every 2 cycle deep profile every cycle V ARGOS DATA A SERVICE ARGOS PARAMETERS The user must specify various options to Service ARGOS These choices depend on how the user wishes to receive and process data Typical parameters are listed below Standard location Processing Type A2 pure binary input hexadecimal output Results Format DS all results from each satellite pass Uncompressed Distribution Strategy Scheduled all results every 24 hours Number of bytes transmitted 31 per message Note Webb Research strongly recommends all users to use ARGOS Multi Satellite Service which provides receptions from 3 satellites instead of 2 for a small incremental cost Using Argos 28 bit ID Format 31 data bytes are transmitted in each message With 20 bit ID Format each message had 32 data bytes see Appendix D for more information B DATA FORMAT no 19 for 28 bit ARGOS ID Data are sent via ARGOS in 31 byte hex messages The number of 31 byte messages sent depends on the programmed quantity of temperature measurements per profile Format for message number 1 only Byt e 01 CRC described in section C 02 Message number Assigned sequentially to each 32 byte m
20. ton pump will retract the profiler begins its programmed mission 12 Reminder replace black rubber plug in cowling hole before deployment During self test the controller checks the internal vacuum sensor If the internal pressure has increased above a preset limit i e hull leakage caused loss of vacuum the instrument will not pump If you do not detect the 6 test transmissions and if the bladder does not inflate then the self test has failed and the instrument should not be deployed IV Deployment RESET instrument SELF TEST starts automatically see above When piston pump stops air pump inflates external bladder is full PTT will transmit for 6 hours at ARGOS Repetition rate intervals Typical repetition rate is 90 seconds or less Programmed repetition rate can be found in the Missions section of this manual If the repetition rate is 120 seconds the controller is not communicating properly with the CTD and the float should not be deployed Six hours after reset the piston pump will retract and bladder will deflate Deploy before this time is up or reset the instrument again to re initialize the 6 hour period The purpose is to have the instrument on the surface and receive test transmissions Pass a rope through the hole in the damper plate Holding both ends of doubled up rope carefully lower the float into the water Do not let rope slide through hole in disk this may cut the plastic disk Take care not to damag
21. yte 03 5 total number of messages to transmit profile 11 5 II 19 r repetition rate 62 seconds Te elapsed time since surfacing m 1 n r 5 1 11 62 s 2728 s 00h 45m 28s Approximate time of arrival at surface ARGOS time stamp Te 22 47 54 00 45 28 22 02 26 Total time spent at surface transmitting Tsurf This is determined by subtracting ascent time from UP time Tsurf UP time hr bottom pressure ascent rate 0 08 dbar s 3600 Bottom pressure is telemetered as bytes 7 amp 8 of message 02 Example For bottom pressure of 2000 dbar and UP time of 18 hours Tsurf 18 hr 2000 0 08 3600 11 hr 20 APPENDIX D Argos ID formats 28 bit and 20 bit In 2002 Service Argos notified its users there were a limited number of 20 bit Ids available and to begin preparing for a transition to 28 bit IDs The 28 bit IDs reduced from 32 to 31 the number of data bytes in each message Data provided by Argos will consist of 31 hex bytes per message Data acquired by use of an uplink receiver will consist of 32 hex bytes per message The first byte when using an uplink receiver is a 28 bit ID identifier used by Argos and is not represented in the Apex Data formats included in this manual APPENDIX E Storage conditions For optimum battery life storage temperature range is 10 to 25 degrees C When activated the floats should be equilibrated at a temperature between 2 and 54 degrees C If optio
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