Bremen, den 21.10.96 MITTEILUNG von: SAQ1 an: SVV2, SPA, SAS3, SAT2, Betr.:Schnittstellenspezifikation GE 6017 F102 SB, Stand 24.02.93, ATLAS HYDROSWEEP DS, Magnetic Tape Recording [ ]Die o.gen. Spezifikation wurde neu herausgegeben. Aenderungs-/Ergaenzungswuensche sind ggf innerhalb einer Woche an SAQ1 zu geben. Es wird empfohlen, die Spezifikation erst fruehestens in zwei Wochen an externe Stellen weiterzugeben. [ ]Die o. gen. Spezifikation wurde wie folgt geaendert: Seiten Aenderungshinweis 21 Event Record Type 6, Item 11, LSB geaendert 22 Item 21 geaendert, Remark 2 gestrichen SAQ1 - Geering Anlage: Neue, bzw geaenderte Seiten Redaktionelle Bemerkungen: Schnittstellen-HW (nicht relevant) Baugr.: Entwickler: Schnittstellen-SW Inhalt geprueft: Entwickler: Freking, SAS3 Datei-Nr.: \SS\STD\GE601702 I N T E R F A C E S P E C I F I C A T I O N A T L A S H Y D R O S W E E P D S MAGNETIC TAPE RECORDING Issued by: V.Geering, SAQ1 LIST OF CONTENTS 1 SCOPE OF APPLICABILITY 2 CONTENTS AND DEFINITIONS OF TRANSFERRED INFORMATION 2.1 OVERVIEW 2.1.1 Sources of Information 2.1.2 General Structure of Information 2.1.3 Quantity of Magnetic Tape 2.2 TRANSFERRED INFORMATION 2.2.1 Survey Parameter 2.2.2 Information about the Ship's Orientation and Motion 2.2.3 Measurement Values 2.2.4 Operation Parameter 3 SPECIFICATION OF INFORMATION TRANSFER 3.1 APPLICATION LAYER 3.1.1 Files 3.1.2 Records 3.2 PRESENTATION LAYER 3.3 TRANSPORT LAYER 3.3.1 Overview 3.3.2 Volume 3.3.3 Files 3.3.4 Blocks 3.3.5 Records 3.3.6 Examples 3.4 PHYSICAL LAYER This document is our property for which we reserve all rights. 1 SCOPE OF APPLICABILITY The specification describes the present capability of the HYDROSWEEP DS equipment to output measurement data and other data as a magnetic tape recording. The magnetic tape recording is provided for post-processing of the measured data on board or on shore. This specification covers the entire set of the standard output data of the HYDROSWEEP DS equipment configuration implemented at present. The output data of each individual HYDROSWEEP DS equipment implemented only forms a subset of the data mentioned in this specification. The output data formats differ only in the differing selection of the record types. 2 CONTENTS AND DEFINITIONS OF TRANFERRED INFORMATION 2.1 OVERVIEW 2.2.1 SOURCES OF INFORMATION Atlas HYDROSWEEP DS is a hydrographic "multi-beam echosounder" which provides measurements of depths, signal strengths, and a "mean velocity of sound in water" by 59 preformed beams (PFBs),which cover a sector of 90 degrees below the vessel.In the "survey mode" the fan of PFBs is oriented across the ship's axis, in the "calibration mode" it is oriented along the ship's axis. The HYDROSWEEP DS system is also connected to a variety of other equipment of the vessel, such as - navigation-/position determination system, - gyro compass, - speed log, - motion sensor (roll, pitch, heave), - sensor for water sound velocity. Selected information from these sensors is acquired by the HYDROSWEEP DS system, partially used for operational control of the system, partially only fed through to the output. 2.1.2 GENERAL STRUCTURE OF INFORMATION The smallest unit of the information to be evaluated as a single set is the "record combination". Depending on the desired type and accuracy of postprocessing, there are different record combinations, some of them to be evaluated additively, and some of them to be evaluated as alternatives to each other. A Bathymetric Depth Postprocessing A1 Postprocessing Without Corrections It is sufficient to evaluate the record combination ERGNMESS. ERGNMESS contains the PFB data of the survey mode fan: - Depth values and lateral distances of the 59 PFBs. - Ship's orientation and motion at the measurement instant. A2 Postprocessing With Correction Possibilities Instead of ERGNMESS, the associated record combination ERGNSLZT and the record combination ERGNHYDI are used. The record combination ERGNSLZT assigned to ERGNMESS contains: - Sound travelling times of the 59 PFBs of the survey mode fan. - Ship's position, orientation and motion at the measurement instant. ERGNHYDI contains: - Sound velocity (Cmean and Ckeel). - Draught, tide. If a correction is to be made by means of the sound velocity profile recorded at the measurement location, the record combination ERGNCTDS is necessary as well. ERGNCTDS contains the sound velocity profile value pairs that were input for the measurement instant. B Backscattering Analysis The record combinations ERGNAMPL and ERGNSLZT are required. ERGNAMPL contains: - Echo amplitudes of the 59 PFBs, determined at the output of the HYDROPSWEEP's bottom echo processor. - Echo duration of the 59 PFBs. - All parameters of the HYDROSWEEP DS that are needed for computing the area scattering strengths. C Position Postprocessing If the navigation system reports jumps in the ship's position, postprocessing of the geographical position is possible with the aid of the record combination ERGNPOSI. ERGNPOSI contains: - Magnitude and direction of the position jump. - Identification of the position sensor used. D Other Correction Possibilities With the record combination ERGNEICH and with the associated record combination ERGNSLZT, information is available which makes it possible to correct various parameters. Content of ERGNEICH: Similar to ERGNMESS, but for the calibration fan. E Compatibility with Older Systems To ensure compatibility with older systems, the record combination ERGNPARA is still included. Evaluation is not recommended. 2.1.3 QUANTITY OF MAGNETIC TAPE The quantity of magnetic tape required depends mainly on the sounding period, which depends on the water depth. Per magnetic tape (2500 feet), the following can be recorded (approximate values for logistic purposes): - Depth up to 700 m: 5.5 h pure measurement operation - Depth 5000 m: 60 h pure measurement operation 2.2 TRANSFERRED INFORMATION 2.2.1 SURVEY PARAMETERS Cruise Name Source: Navigation system or manual input, whichever is selected by the HYDROSWEEP operator. Station Name Source: Navigation system or manual input, whichever is selected by the HYDROSWEEP operator. Track Number The track is the lowest hierarchy designation of a survey section. Source: Navigation system or manual input, whichever is selected by the HYDROSWEEP operator. Date and Time The date and time of the transmission instant (the time system is specified by the source). Source: Navigation system or manual input, whichever is selected by the HYDROSWEEP operator. The date and time are contained as a reference quantity in every record combination. They apply to all data contained in the record combination, unless specified otherwise in individual cases. Ship's Position Geographical position of the ship at the transmission instant (the reference grid is specified by the source). Source: Navigation system. The ship's position is contained as a reference quantity in every record combination. It applies to all data contained in the record combination, unless specified otherwise in individual cases. Correction Value of Position (X-axis, Y-axis) Value by which the ship's position was corrected relative to the ship's position at the preceding transmission instant. Sign: + means "new position is easterly" (x-axis) or "new position is northerly" (y-axis) Source: Navigation system. Position Sensors Navigation sensors whose data are used to determine the position. Source: Navigation system. Survey Section Time Time which has elapsed since the beginning of the present survey section. Source: HYDROSWEEP DS 2.2.2 INFORMATION ABOUT THE SHIP'S ORIENTATION AND MOTION All values apply to the transmission instant (unless stated otherwise). Heading Angle between the direction of geographic north ("true north") and the ship's longitudinal axis in the ahead direction ("dead ahead"). Source: Navigation system. Gyro Heading Same as heading, but the source is: Gyro compass. For eleven PFBs distributed over the fan, the gyro heading which exists at the echo reception instant is transferred. Course over Ground Angle between the direction of geographic north ("true north") and the direction of the track over ground. Source: Navigation system. Longitudinal Speed, Transverse Speed Ship's speed, referenced to the ship coordinates. Sign: + means "speed ahead" or "speed to starboard". Source: Navigation system. In the standard system configuration, the navigation system merely passes these values on to the HYDROSWEEP DS system in unchanged form from a two-component log. Reference for Speed The reference for speed indicates whether the longitudinal speed and transverse speed of the ship are relative to the sea bed (bottom track) or to the water (water track). Source: Navigation system. Speed over the Ground The magnitude of the ship's speed over ground. (Together with the course over ground, this magnitude represents the motion over ground.) Source: Navigation system. Roll Angle Angle between the normal orientation of the ship and its actual orientation, measured about the ship's longitudinal axis. Sign: + means "starboard side goes down". Source: Reference platform. Pitch Angle Angle between the normal orientation of the ship and its actual orientation, measured about the ship's transverse axis. Sign: + means "stern goes down". Source: Reference platform. Heave Instantaneous vertical deviation of the HYDROSWEEP DS transducer from its long-term average position. A positive heave corresponds to a position above the mean value. Source: Heave sensor. Conversion to the installation location of the HYDROSWEEP DS transducer is performed by the HYDROSWEEP DS. Draught Depth of water below the HYDROSWEEP DS transducer. Source: Manual input by the HYDROSWEEP operator. Tide Height of the tide (water level relative to the local chart datum). Source: Manual input by the HYDROSWEEP operator. 2.2.3 MEASUREMENT VALUES Unless stated otherwise, all of the following values are determined by the HYDROSWEEP DS system. Most of the following data are for individual PFBs. The PFBs are numbered consecutively as follows: - Survey mode: PFB1 outer beam on port side PFB59 outer beam on starboard side - Calibration mode: PFB1 outer beam astern PFB59 outer beam ahead The fan of beams is stabilised electronically against the effects of roll and pitch. PFB30 is thus always the vertical beam. Mean Velocity of Sound in Water Mean velocity of sound in the water at the measurement location, averaged over the mean travelling distance of the sound. Source: - HYDROSWEEP DS on the basis of the measurements in calibration mode, or - HYDROSWEEP DS on the basis of the sound speed profile, or - manual input, whichever is selected by the HYDROSWEEP operator. Velocity of Sound in Water at the Keel Source: Sound velocity sensor or manual input, whichever is selected by the HYDROSWEEP operator. Sound Velocity Profile Sound velocity in the water at the measurement location, stated as a function of the depth by means of value pairs. Source: Manual input by the HYDROSWEEP operator. Depth Vertical distance between the transducer and the sea bed. In calibration mode, the depth is transferred for every PFB that is evaluated. (In survey mode, the smoothed depth is transferred instead of the depth.) The computation is based on the transferred mean velocity of sound in water. The heave value is taken into account. The draught and the tide value are not taken into account. Lateral Distance The horizontal distance between the transducer centre and the centre of the element of area on the sea bed that is probed by the PFB. In calibration mode, the lateral distance is transferred for every PFB that is evaluated. (In survey mode, the smoothed lateral distance is transferred instead of the lateral distance.) Sound Travelling Time The sound travelling time of the PFB from the transmission instant (centre of the tranmission pulse) to the reception instant (centroid of that part of the reception pulse that is situated between the "3 dB down" points). The sound travelling time is transferred for every PFB that is evaluated. Output Amplitude The voltage amplitude of a received PFB, determined at the output of the HYDROSWEEP DS system's bottom echo processor. It is the RMS value averaged over the echo duration. The output amplitude is transferred for every PFB that is evaluated. Echo Duration The time between the "3 dB down" points of the output amplitude. The echo duration is transferred for every PFB that is evaluated. Smoothed Depth Definition and computation are the same as for depth, but, in addition, smoothing of the individual values is performed by weighted averaging from - the depth of the PFB to which the smoothed depth information refers, - the depth values of the adjacent PFBs of the same sweep (two values on the right and two values on the left), - the depth values of the same PFBs of the preceding sweeps and of the following sweeps (three values ahead and three values astern). In the computation of the smoothed depth of each PFB, a total of 11 depth values are thus taken into account. The weighting de- creases with increasing distance from the PFB to which the smoothed depth information refers. In survey mode, the smoothed depth is transferred for every PFB that is evaluated. (In calibration mode, the depth is transferred instead of the smoothed depth.) Smoothed Lateral Distance Definition same as for lateral distance. However, the computation is based on the smoothed depth instead of the depth. In survey mode, the smoothed lateral distance is transferred for every PFB that is evaluated. (In calibration mode, the lateral distance is transferred instead of the smoothed lateral distance.) 2.2.4 OPERATION PARAMETERS As operation parameters, all HYDROSWEEP DS variables needed for the backscattering analysis are transferred. They are listed and briefly defined in the following. For further understanding, for the application of these data, and with regard to the relevant HYDROSWEEP DS constants, please see the Interface Specification "Data for Backscattering Analysis", document No. GE 6017 F 101 SB. Operation Mode The HYDROSWEEP DS mode selected during the measurement. Swath Mode Mode which defines angular coverage. PFB Angle-Constant Angle between adjacent PFBs. Transmission Beam Angle Angle between central axis of transmission beam and the vertical. Transmission Beam Width Transmission beam width between the "3dB down" points. Transmission Level, LS Nominal value of the transmission sound level specified by the HYDROSWEEP DS computer (RMS value between the "3 dB down" points). The transmission level is transferred for all transmission beams that are radiated. Pulse Length, tau The duration of the transmission beam between the "3 dB down" points. The pulse length is transferred for all transmission beams that are radiated. TVC Starting Gain, V0 Gain of the TVC amplifier, including the gain of the preamplifier at the transmission instant. Factor for A(r) Compensation, A1 TVC gain increase per km of sound travelling distance (sound travelling distance computed with c = 1500 m/s). It is the factor for compensation of the frequency-dependent attenuation of sound in seawater, which the processor uses as the basis for the computation of the TVC function. Start of Continuous 20 lg r Compensation, R0 After the sound has travelled the distance R0 (computation with c = 1500 m/s), the TVC amplifier starts the correction of the geometrical spreading loss. Start of "Increasing Interval Near", RB After the sound has travelled the distance RB (computation with c = 1500 m/s), the "increasing interval near" begins. "Increasing Interval Near", I3 The length of the "increasing interval near", expressed as the quotient I3 = (RU - RB)/RB, where RU is the end of the "increasing interval near". "Increasing Interval", I2 The length of the "increasing interval far", including the "increasing interval near", expressed as the quotient I2 = (RE - RB)/RB, where RE is the end of the "increasing interval far". (The "increasing interval far" begins at RU.) "TVC Increase Near", VA3 Increase in the TVC gain during the "increasing interval near". TVC Increase, VA2 Increase in the TVC gain during the "increasing interval"; sum of the increase during the "increasing interval near" and the increase during the "increasing interval far". Beamformer Basic Gain, V'BF Basic gain of the beamformer. V'BF is transferred for every PFB group whose "beamformer basic gain" is specified individually by the processor. Filter Gain, VFilt Gain factor of the PFB filter. 3 SPECIFICATION OF INFORMATION TRANSFER All user data are organised on the magnetic tape in the form of files. 3.1 APPLICATION LAYER 3.1.1 FILES The following files are used: - Tape header file - Survey section file Each tape contains one tape header file as the first file. It is followed by one or more survey section files. 3.1.2 RECORDS Within the files, the user data are organised in the form of records. Furthermore, records without user data exist which are used only for organisation of the data transfer. 3.1.2.1 Types of Record The following different types of record exist: - Block number records - Identifier records - Data records All user data are contained in the data records. For standard application the following types of record exist, differing in their content and structure. Each type of record has a particular format and thus a particular length. - Block number record One type only - Identifier record One type only - Data records 1 tape header record (one type only) 3 survey section header records (types 1, 2, 3) 8 event records (types 1,2,3,4,6,7,10,11) 11 measurement data records (types 1,2,3,4,5,6,7,8,9,10,11) 1 auxiliary data record (type 1) 3.1.2.2 Record Combinations The transfer of the records takes place in the form of defined groups, the "record combinations"; the selection and sequence of the record types are defined for each record combination. All record combinations begin with an identifier record, which is followed by one ore more data records. The identifier record contains the record combination name, from which, with the aid of the following listing, it is possible to identify the types of the data records which follow, i.e. how these data records are to be interpreted. The following record combinations are transferred (instead of the identifier record type, the record combination name contained in the identifier record is stated): a) In the tape header file: - Record combination BANDHEAD, consisting of: - Identifier record bandhead - Tape header record b) In the survey section file: - Record combination MEABPDAT, consisting of: - Identifier record meabpdat - Survey section header record type 1 - Record combination MEABHYDI, consisting of: - Identifier record meabhydi - Survey section header record type 2 - Record combination MEABCOMM, consisting of: - Identifier record maebcomm - Survey section header record type 3 - Record combination ERGNHYDI, consisting of: - Identifier record ergnhydi - Event record type 1 - Record combination ERGNPARA, consisting of: - Identifier record ergnpara - Event record type 2 - Record combination ERGNPOSI, consisting of: - Identifier record ergnposi - Event record type 3 - Record combination ERGNEICH, consisting of: - Identifier record ergneich - Event record type 4 - Measurement data record type 1 - Measurement data record type 2 - Measurement data record type 3 - Measurement data record type 4 - Record combination ERGNMESS, consisting of: - Identifier record ergnmess - Event record type 4 - Measurement data record type 1 - Measurement data record type 2 - Measurement data record type 3 - Measurement data record type 4 - Record combination ERGNSLZT, consisting of: - Identifier record ergnslzt - Event record type 6 - Measurement data record type 5 - Measurement data record type 6 - Measurement data record type 7 - Record combination ERGNCTDS, consisting of: - Identifier record ergnctds - Event record type 7 - Auxiliary data record type 1 (If there are more data than can be contained in one auxiliary data record, a further auxiliary data record of the same type is appended.) - Record combination ERGNAMPL, consisting of: - Identifier record ergnampl - Event record type 10 - Measurement data record type 8 - Measurement data record type 9 - Measurement data record type 10 - Measurement data record type 11 - The HYDROSWEEP equipment can be configured that the record combination ERGNAMP5, consisting of: - Identifier record ergnamp5 - Event record type 11 - Measurement data record type 8 - Measurement data record type 9 - Measurement data record type 10 - Measurement data record type 11 is transferred instead of record combination ERGNAMPL . 3.1.2.3 Transfer Rate The transfer of the record combination is event-controlled. The frequency of transfer of the individual record combination thus depends on various operational parameters and on events. The various record combinations are recorded with the following dependences: - BANDHEAD: Single record-combination of each tape header file. - MEABPDAT: - At the beginning of each survey section file - After each start of magnetic tape recording - MEABHYDI: - After each MEABPDAT - MEABCOMM: - After each MEABHYDI - ERGNPARA: - After each MEABCOMM. - Only if the equipment is in the "stand-by" or "search" state: Every whole minute - ERGNHYDI: - If one or more values of the following parameters have changed: - Mean sound velocity used - Keel sound velocity used - Draught used - Tide value used. - After the first ERGNPARA after each start of magnetic tape recording. - After each change of the recording between two magnetic tape drives. - ERGNPOSI: - When the navigation system reports that a position update has taken place. - When a GPS receiver is switched off (or, to be more precise, when the data of one of the existing GPS receivers are no longer being used for the determination of position data). - After the first ERGNHYDI after each start of magnetic tape recording if a previous position fix has been occured while the tape recording was switched off. - ERGNEICH: Immediately after each measurement in the calibration mode. (The minimum time interval between two measurements is 1 second.) - ERGNMESS: Immediately after each measurement in the survey mode. (The minimum time interval between two measurements is 1 second.) - ERGNSLZT: - After each ERGNEICH - After each ERGNMESS - ERGNCTDS: After completion of the input of a sound velocity profile. - ERGNAMPL respectively ERGNAMP5: After each ERGNSLZT For the standard cases, this leads to the transfer of the following record combinations in the sequence stated. - At the beginning of each survey section file: MEABPDAT MEABHYDI MEABCOMM ERGNPARA ERGNHYDI ERGNPOSI - At each measurement in the survey mode: ERGNMESS ERGNSLZT ERGNAMPL or ERNAMP5 - At each measurement in the calibration mode: ERGNEICH ERGNSLZT ERGNAMPL or ERGNAMP5 3.1.2.4 Desciption of the records In the following, the record format and the transfer format of the items contained are specified. For the definition of the information contained, see para. 2.2. Remarks (valid unless specified otherwise in individual cases): 1) All number fields, including signs if any, are written right-justified and are filled up with spaces (20H) on the left. 2) If a value is not available, spaces (20H) or zeros (30H) are transferred. 3) All decimal points are transferred at the specified places even if the corresponding value is not transferred. 4) In the case of positive values, a + (2BH) is transferred as the the sign (if a sign has been defined as part of the item). 5) Characters listed under "format" which are not explained under "description" are constants which are transferred. 6) If no LSB value is stated, the scaling factor is 1. BLOCK NUMBER RECORD Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Block number nnnnnn 1 0006 2 Termination, CR(0DH) LF(0AH) Remarks: 1) The block number is the sequential number of the block within a file. IDENTIFIER RECORD Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Record combination name 8 printable characters 0008 2 Termination, CR(0DH) LF(0AH) TAPE HEADER RECORD Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Name of the actual magnetic tape 60 printable 1 characters 0060 2 Name of the last magnetic tape 60 printable 1 characters 0120 3 Termination, CR(0DH) LF(0AH) Remarks: 1) Source: HYDROSWEEP operator The field is written left-justified, including any preceeding blank fields entered by the operator, and is filled up with spaces (20H) on the right. SURVEY SECTION HEADER RECORD TYPE 1 Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Cruise name 12 printable 1 characters 0012 2 Station name 12 printable 1 characters 0024 3 Date (y=year m=month d=day) yyyymmdd 0032 4 Time (h=hour m=minute s=second) hhmmss 0038 5 Termination, CR(0DH) LF(0AH) Remarks: 1) Source: HYDROSWEEP operator The field is written left-justified, including any preceeding blank fields entered by the operator, and is filled up with spaces (20H) on the right. SURVEY SECTION HEADER RECORD TYPE 2 Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 120 printable 1 characters 0120 2 Termination, CR(0DH) LF(0AH) Remarks: 1) Spare, spaces (20H) at present SURVEY SECTION HEADER RECORD TYPE 3 Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 36 printable 1 characters 0036 2 Termination, CR(0DH) LF(0AH) Remarks: 1) Spare, spaces (20H) at present EVENT RECORD TYPE 1 Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Ship's position,longitude (s=sign d=degree) sddd.ddddddd 0012 2 Ship's position,latitude (s=sign d=degree) sddd.ddddddd 0024 3 Date (y=year m=month d=day) yyyymmdd 0032 4 Time (h=hour m=minute s=second) hhmmss 0038 5 Survey section time (m=minute, s=second) mmmmmss 0045 6 Draught (m=meter) mm.m 0049 7 Mean velocity of sound in water, Cmean (m=meter/second) mmmm.mm 0056 8 Velocity of sound in water at the keel, Ckeel (m=meter/second) mmmm.mm 0063 9 Tide (s=sign m=meter) smm.mm 0069 10 Termination, CR(0DH) LF(0AH) EVENT RECORD TYPE 2 Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Ship's position, longitude (s=sign d=degree) sddd.ddddddd 0012 2 Ship's position, latitude (s=sign d=degree) sddd.ddddddd 0024 3 Date (y=year m=month d=day) yyyymmdd 0032 4 Time (h=hour m=minute s=second) hhmmss 0038 5 Survey section time (m=minute s=second) mmmmmss 0045 6 Haeding (d=degree) ddd.d 0050 7 Transverse speed (s=sign, m=meter/second) smmmmmm.m 0059 8 Longitudinal speed (s=sign m=meter/second) smmmmmm.m 0068 9 Reference for speed, x x=B bottom track x=W water track 0069 10 Pitch angle (s=sign d=degree) sd.d 0073 11 Track number nnnn 0077 12 Depth PFB 30 (m=meter) mmmmm.m 0084 13 Termination, CR(0DH) LF(0AH) EVENT RECORD TYPE 3 Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Ship's position, longitude (s=sign d=degree) sddd.ddddddd 0012 2 Ship's position, latitude (s=sign d=degree) sddd.ddddddd 0024 3 Date (y=year m=month d=day) yyyymmdd 0032 4 Time (h=hour m=minute s=second) hhmmss 0038 5 Survey section time (m=minute s=second) mmmmmss 0045 6 Correction value of position, east (s=sign m=meter) smmmmm. 0045 7 Correction value of position, north (s=sign m=meter) smmmmm. 0059 8 Position sensors, (x=position sensor) POSxxxxx 1 0067 9 Termination, CR(0DH) LF(0AH) Remarks: 1) Each "x" stands for a sensor whose data are used to determine the ship's position. These data are transferred unaltered in form and content, exactly as they were received from the navigation system. The characters "POS" are added by the HYDROSWEEP DS system. Definitions: x = G First GPS system x = g Second GPS system All other flags are non-defined. Recommendations: D = DECCA Mainchain L = LORAN T = Transit SatNav S = Syledis O = Omega EVENT RECORD TYPE 4 Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Ship's position, longitude (s=sign d=degree) sddd.ddddddd 0012 2 Ship's position, latitude (s=sign d=degree) sddd.ddddddd 0024 3 Date (y=year m=month d=day) yyyymmdd 0032 4 Time (h=hour m=minute s=second) hhmmss 0038 5 Survey section time (m=minute s=second) mmmmmss 0045 6 Haeding (d=degree) ddd.d 0050 7 Transverse speed (s=sign m=meter/second) smmmmmm.m 0059 8 Longitudinal speed (s=sign m=meter/second) smmmmmm.m 0068 9 Reference for speed, x x=B bottom track x=W water track 0069 10 Pitch angle (s=sign d=degree) sd.d 0073 11 Track number nnnn 0077 12 Depth PFB 30 (m=meter) mmmmm.m 0084 13 Scaling factor (m=meter) m.mm 1 0088 14 2 printable 2 character 0090 15 Termination, CR(0DH) LF(0AH) Remarks: 1) Multiplication factor for lateral distance and depth mantissa contained in the associated measurement data records Example: Item 13 value is 0.05, item 3 value of measurementdata record type 2 is 6420 means: Depth of PFB 32 is 321m. 2) Spare, at present the value 1 is recorded (20H 31H) EVENT RECORD TYPE 6 Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Ship's position, longitude (s=sign d=degree) sddd.ddddddd 0012 2 Ship's position, latitude (s=sign d=degree) sddd.ddddddd 0024 3 Date (y=year m=month d=day) yyyymmdd 0032 4 Time (h=hour m=minute s=second) hhmmss 0038 5 Haeding (d=degree) ddd.d 0043 6 Course over ground (d=degree) ddd.d 0048 7 Speed over the ground (s=sign m=meter/second) smmmmmm.m 0057 8 Heave (s=sign m=meter) smm.mm 0063 9 Pitch angle (s=sign d=degree) sd.d 0067 10 Roll angle (s=sign d=degree) sd.d 0072 11 Sound travelling time PFB 30 (s=second LSB=0.0001) ssssss 0078 12 Scaling factor (s=second) s.ssss 1 0084 13 Termination, CR(0DH) LF(0AH) Remarks: 1) Multiplication factor for sound travelling time mantissa contained in the associated measurement data records Example: Item 12 value is 0.0010, item 3 value of measurementdata record type 6 is 3528 means: Sound travelling time of PFB 28 is 3.528 sec. EVENT RECORD TYPE 7 Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Ship's position, longitude (s=sign d=degree) sddd.ddddddd 0012 2 Ship's position, latitude (s=sign d=degree) sddd.ddddddd 0024 3 Date (y=year m=month d=day) yyyymmdd 0032 4 Time (h=hour m=minute s=second) hhmmss 0038 5 Number of sound velocity profile value pairs present in nn the associated auxiliary data record(s) 0040 6 Termination, CR(0DH) LF(0AH) EVENT RECORD TYPE 10 Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Ship's position, longitude (s=sign d=degree) sddd.ddddddd 0012 2 Ship's position, latitude (s=sign d=degree) sddd.ddddddd 0024 3 Date (y=year m=month d=day) yyyymmdd 0032 4 Time (h=hour m=minute s=second) hhmmss 0038 5 Operation mode x x=S shallow water survey mode x=M medium depth survey mode x=D deep sea survey mode x=s shallow water calibration mode x=m medium depth calibration mode x=d deep sea calibration mode 0039 6 Transmission level starboard, [astern], LSs (d=dB rel 1uPa,m)ddd 1 0042 7 Transmission level vertical, LSv (d=dB rel 1uPa,m) ddd 0045 8 Transmission level port [ahead], LSp (d=dB rel 1uPa,m) ddd 1 0048 9 Pulse length starboard [astern], taus (s=second LSB=0.001) ss 1 0050 10 Pulse length vertical, tauf (s=second LSB=0.001) ss 0052 11 Pulse length port [ahead], taup (s=second LSB=0.001) ss 1 0054 12 TVC starting gain, V0 (d=dB) dd 0056 13 Factor for A(r) compensation, A1 (d=dB/km; LSB = 0.1) dd 0058 14 Start of continuous 20 lg r compensation, R0 (m=meter) mmmm 0062 15 Start of increasing interval near, RB (m=meter) mmmmm 0067 16 TVC-increase near, VA3 (d=dB) dd 0069 17 TVC-increase, VA2 (d=dB) dd 0071 18 Increasing interval near, I3 (LSB=0.001) nnn 0074 19 Increasing interval, I2 (LSB=0.001) nnn 0077 20 Beamformer basic gain PFB 27-30, V'BF (d=dB LSB=6) d 0078 21 Filter gain, Vfilt (s=sign d=dB) sdd.d 0083 22 Output amplitude PFB 30, UA (v=Veff LSB=2/256) vvv 0086 23 Echo duration (mantissa) PFB 30, mtau nnn 0089 24 Echo duration (scaling factor) PFB 27-30 x x=0 1/1000000 sec x=1 1/100000 sec x=2 1/10000 sec x=3 1/1000 sec x=4 1/100 sec x=5 1/10 sec x=6 1 sec 0090 25 Termination, CR(0DH) LF(0AH) Remarks: 1) Expressions in square brackets are related to calibration mode. EVENT RECORD TYPE 11 Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Ship's position, longitude (s=sign d=degree) sddd.ddddddd 0012 2 Ship's position, latitude (s=sign d=degree) sddd.ddddddd 0024 3 Date (y=year m=month d=day) yyyymmdd 0032 4 Time (h=hour m=minute s=second) hhmmss 0038 5 Operation mode x x=S shallow water survey mode x=M medium depth survey mode x=D deep sea survey mode x=s shallow water calibration mode x=m medium depth calibration mode x=d deep sea calibration mode 0039 6 Swath mode x x=0 90ø coverage x=1 120ø coverage 0040 7 PFB angle-constant, Ca (d=degree LSB=0.0001) ddddd 0045 8 Transmission level starboard, outer, [astern, outer], ddd 1 LSso (d=dB rel 1uPa,m) 0048 9 Transmission level starboard, [astern], LSs (d=dB rel 1uPa,m)ddd 1 0051 10 Transmission level vertical, LSv (d=dB rel 1uPa,m) ddd 0054 11 Transmission level port [ahead], LSp (d=dB rel 1uPa,m) ddd 1 0057 12 Transmission level port, outer [ahead, outer], ddd 1 LSpo (d=dB rel 1uPa,m) 0060 13 Pulse length starboard, outer [astern, outer], ss 1 tauso (s=second LSB=0.001) 0062 14 Pulse length starboard [astern], taus (s=second LSB=0.001) ss 1 0064 15 Pulse length vertical, tauf (s=second LSB=0.001) ss 0066 16 Pulse length port [ahead], taup (s=second LSB=0.001) ss 1 0068 17 Pulse length port, outer [ahead, outer], ss 1 taupo (s=second LSB=0.001) 0070 18 Transmission beam angle starboard, outer, [astern, outer], dd 1 BAso (d=degree) 0072 19 Transmission beam angle starboard, [astern], BAs (d=degree)dd 1 0074 20 Transmission beam angle vertical, BAv (d=degree) dd 0076 21 Transmission beam angle port, [ahead], BAp (d=degree) dd 1 0078 22 Transmission beam angle starboard, outer [astern, outer], dd 1 BApo (d=degree) 0080 23 Transmission beam width starboard, outer, [astern, outer], dd 1 BWso (d=degree) 0082 24 Transmission beam width starboard, [astern], BWs (d=degree)dd 1 0084 25 Transmission beam width vertical, BWv (d=degree) dd 0086 26 Transmission beam width port, [ahead], BWp (d=degree) dd 1 0088 27 Transmission beam width starboard, outer [astern, outer], dd 1 BWpo (d=degree) 0090 28 TVC starting gain, V0 (d=dB) dd 0092 29 Factor for A(r) compensation, A1 (d=dB/km; LSB = 0.1) dd 0094 30 Start of continuous 20 lg r compensation, R0 (m=meter) mmmm 0098 31 Start of increasing interval near, RB (m=meter) mmmmm 0103 32 TVC-increase near, VA3 (d=dB) dd 0105 33 TVC-increase, VA2 (d=dB) dd 0107 34 Increasing interval near, I3 (LSB=0.001) nnn 0110 35 Increasing interval, I2 (LSB=0.001) nnn 0113 36 Beamformer basic gain PFB 27-30, V'BF (d=dB LSB=6) d 0114 37 Filter gain, Vfilt (s=sign d=dB) s sdd.d 2 0119 38 Output amplitude PFB 30, UA (v=Veff LSB=2/256) vvv 0122 39 Echo duration (mantissa) PFB 30, mtau nnn 0125 40 Echo duration (scaling factor) PFB 27-30 x x=0 1/1000000 sec x=1 1/100000 sec x=2 1/10000 sec x=3 1/1000 sec x=4 1/100 sec x=5 1/10 sec x=6 1 sec 0126 41 Termination, CR(0DH) LF(0AH) Remarks: 1) Expressions in square brackets are related to calibration mode. 2) The sign remains left-justified, the value remains right-justified. In the case of values smaller than 10 dB, the gap is filled up with spaces (20H). MEASUREMENT DATA RECORD TYPE 1 (Lateral distances to starboard [ahead]) Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Number of PFBs selected by the operator nn 1 0002 2 Lateral distance (mantissa) PFB 31 nnnn 2 0006 3 Lateral distance (mantissa) PFB 32 nnnn 2 0010 4 Lateral distance (mantissa) PFB 33 nnnn 2 0014 5 Lateral distance (mantissa) PFB 34 nnnn 2 0018 6 Lateral distance (mantissa) PFB 35 nnnn 2 0022 7 Lateral distance (mantissa) PFB 36 nnnn 2 0026 8 Lateral distance (mantissa) PFB 37 nnnn 2 0030 9 Lateral distance (mantissa) PFB 38 nnnn 2 0034 10 Lateral distance (mantissa) PFB 39 nnnn 2 0038 11 Lateral distance (mantissa) PFB 40 nnnn 2 0042 12 Lateral distance (mantissa) PFB 41 nnnn 2 0046 13 Lateral distance (mantissa) PFB 42 nnnn 2 0050 14 Lateral distance (mantissa) PFB 43 nnnn 2 0054 15 Lateral distance (mantissa) PFB 44 nnnn 2 0058 16 Lateral distance (mantissa) PFB 45 nnnn 2 0062 17 Lateral distance (mantissa) PFB 46 nnnn 2 0066 18 Lateral distance (mantissa) PFB 47 nnnn 2 0070 19 Lateral distance (mantissa) PFB 48 nnnn 2 0074 20 Lateral distance (mantissa) PFB 49 nnnn 2 0078 21 Lateral distance (mantissa) PFB 50 nnnn 2 0082 22 Lateral distance (mantissa) PFB 51 nnnn 2 0086 23 Lateral distance (mantissa) PFB 52 nnnn 2 0090 24 Lateral distance (mantissa) PFB 53 nnnn 2 0094 25 Lateral distance (mantissa) PFB 54 nnnn 2 0098 26 Lateral distance (mantissa) PFB 55 nnnn 2 0102 27 Lateral distance (mantissa) PFB 56 nnnn 2 0106 28 Lateral distance (mantissa) PFB 57 nnnn 2 0110 29 Lateral distance (mantissa) PFB 58 nnnn 2 0114 30 Lateral distance (mantissa) PFB 59 nnnn 2 0118 31 Termination, CR(0DH) LF(0AH) Remarks: 1) The PFBs are always selected in ascending consecutive order, beginning with PFB 31. 2) - Instead of those PFBs which are not selected any alphanumerical characters are transferred. - Instead of those selected PFBs which are recognised by the HYDOSWEEP equipment as incorrect measurement any alphanumerical characters are transferred. For recognition of the incorrect measurements see measurement data record 2. - For scaling factor, see associated event record. - In survey mode, it is not the lateral distance that is transferred, but the smoothed lateral distance. - The PFBs that are nt selected by the are always the outer PFBs. MEASUREMENT DATA RECORD TYPE 2 (Depth to starboard [ahead]) Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Number of PFBs selected by the operator nn 1 0002 2 Depth (mantissa) PFB 31 nnnn 2 0006 3 Depth (mantissa) PFB 32 nnnn 2 0010 4 Depth (mantissa) PFB 33 nnnn 2 0014 5 Depth (mantissa) PFB 34 nnnn 2 0018 6 Depth (mantissa) PFB 35 nnnn 2 0022 7 Depth (mantissa) PFB 36 nnnn 2 0026 8 Depth (mantissa) PFB 37 nnnn 2 0030 9 Depth (mantissa) PFB 38 nnnn 2 0034 10 Depth (mantissa) PFB 39 nnnn 2 0038 11 Depth (mantissa) PFB 40 nnnn 2 0042 12 Depth (mantissa) PFB 41 nnnn 2 0046 13 Depth (mantissa) PFB 42 nnnn 2 0050 14 Depth (mantissa) PFB 43 nnnn 2 0054 15 Depth (mantissa) PFB 44 nnnn 2 0058 16 Depth (mantissa) PFB 45 nnnn 2 0062 17 Depth (mantissa) PFB 46 nnnn 2 0066 18 Depth (mantissa) PFB 47 nnnn 2 0070 19 Depth (mantissa) PFB 48 nnnn 2 0074 20 Depth (mantissa) PFB 49 nnnn 2 0078 21 Depth (mantissa) PFB 50 nnnn 2 0082 22 Depth (mantissa) PFB 51 nnnn 2 0086 23 Depth (mantissa) PFB 52 nnnn 2 0090 24 Depth (mantissa) PFB 53 nnnn 2 0094 25 Depth (mantissa) PFB 54 nnnn 2 0098 26 Depth (mantissa) PFB 55 nnnn 2 0102 27 Depth (mantissa) PFB 56 nnnn 2 0106 28 Depth (mantissa) PFB 57 nnnn 2 0110 29 Depth (mantissa) PFB 58 nnnn 2 0114 30 Depth (mantissa) PFB 59 nnnn 2 0118 31 Termination, CR(0DH) LF(0AH) Remarks: 1) The PFBs are always selected in ascending consecutive order, beginning with PFB 31. 2) - Instead of those PFBs which are not selected any alphanumerical characters are transferred. - Instead of those selected PFBs which are recognised by the HYDOSWEEP equipment as incorrect measurement value 0 (20H 20H 20H 30H) is transferred. - For scaling factor, see associated event record. - In survey mode, it is not the depth that is transferred, but the smoothed depth. MEASUREMENT DATA RECORD TYPE 3 (Lateral distances to port [astern]) Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Number of PFBs selected by the operator nn 1 0002 2 Lateral distance (mantissa) PFB 29 nnnn 2 0006 3 Lateral distance (mantissa) PFB 28 nnnn 2 0010 4 Lateral distance (mantissa) PFB 27 nnnn 2 0014 5 Lateral distance (mantissa) PFB 26 nnnn 2 0018 6 Lateral distance (mantissa) PFB 25 nnnn 2 0022 7 Lateral distance (mantissa) PFB 24 nnnn 2 0026 8 Lateral distance (mantissa) PFB 23 nnnn 2 0030 9 Lateral distance (mantissa) PFB 22 nnnn 2 0034 10 Lateral distance (mantissa) PFB 21 nnnn 2 0038 11 Lateral distance (mantissa) PFB 20 nnnn 2 0042 12 Lateral distance (mantissa) PFB 19 nnnn 2 0046 13 Lateral distance (mantissa) PFB 18 nnnn 2 0050 14 Lateral distance (mantissa) PFB 17 nnnn 2 0054 15 Lateral distance (mantissa) PFB 16 nnnn 2 0058 16 Lateral distance (mantissa) PFB 15 nnnn 2 0062 17 Lateral distance (mantissa) PFB 14 nnnn 2 0066 18 Lateral distance (mantissa) PFB 13 nnnn 2 0070 19 Lateral distance (mantissa) PFB 12 nnnn 2 0074 20 Lateral distance (mantissa) PFB 11 nnnn 2 0078 21 Lateral distance (mantissa) PFB 10 nnnn 2 0082 22 Lateral distance (mantissa) PFB 9 nnnn 2 0086 23 Lateral distance (mantissa) PFB 8 nnnn 2 0090 24 Lateral distance (mantissa) PFB 7 nnnn 2 0094 25 Lateral distance (mantissa) PFB 6 nnnn 2 0098 26 Lateral distance (mantissa) PFB 5 nnnn 2 0102 27 Lateral distance (mantissa) PFB 4 nnnn 2 0106 28 Lateral distance (mantissa) PFB 3 nnnn 2 0110 29 Lateral distance (mantissa) PFB 2 nnnn 2 0114 30 Lateral distance (mantissa) PFB 1 nnnn 2 0118 31 Termination, CR(0DH) LF(0AH) Remarks: 1) The PFBs are always selected in ascending consecutive order, beginning with PFB 29. 2) - Instead of those PFBs which are not selected any alphanumerical characters are transferred. - Instead of those selected PFBs which are recognised by the HYDOSWEEP equipment as incorrect measurement any alphanumerical characters are transferred. For recognition of the incorrect measurements see measurement data record 4. - For scaling factor, see associated event record. - In survey mode, it is not the lateral distance that is transferred, but the smoothed lateral distance. MEASUREMENT DATA RECORD TYPE 4 (Depth to port [astern]) Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Number of PFBs selected by the operator nn 1 0002 2 Depth (mantissa) PFB 29 nnnn 2 0006 3 Depth (mantissa) PFB 28 nnnn 2 0010 4 Depth (mantissa) PFB 27 nnnn 2 0014 5 Depth (mantissa) PFB 26 nnnn 2 0018 6 Depth (mantissa) PFB 25 nnnn 2 0022 7 Depth (mantissa) PFB 24 nnnn 2 0026 8 Depth (mantissa) PFB 23 nnnn 2 0030 9 Depth (mantissa) PFB 22 nnnn 2 0034 10 Depth (mantissa) PFB 21 nnnn 2 0038 11 Depth (mantissa) PFB 20 nnnn 2 0042 12 Depth (mantissa) PFB 19 nnnn 2 0046 13 Depth (mantissa) PFB 18 nnnn 2 0050 14 Depth (mantissa) PFB 17 nnnn 2 0054 15 Depth (mantissa) PFB 16 nnnn 2 0058 16 Depth (mantissa) PFB 15 nnnn 2 0062 17 Depth (mantissa) PFB 14 nnnn 2 0066 18 Depth (mantissa) PFB 13 nnnn 2 0070 19 Depth (mantissa) PFB 12 nnnn 2 0074 20 Depth (mantissa) PFB 11 nnnn 2 0078 21 Depth (mantissa) PFB 10 nnnn 2 0082 22 Depth (mantissa) PFB 9 nnnn 2 0086 23 Depth (mantissa) PFB 8 nnnn 2 0090 24 Depth (mantissa) PFB 7 nnnn 2 0094 25 Depth (mantissa) PFB 6 nnnn 2 0098 26 Depth (mantissa) PFB 5 nnnn 2 0102 27 Depth (mantissa) PFB 4 nnnn 2 0106 28 Depth (mantissa) PFB 3 nnnn 2 0110 29 Depth (mantissa) PFB 2 nnnn 2 0114 30 Depth (mantissa) PFB 1 nnnn 2 0118 31 Termination, CR(0DH) LF(0AH) Remarks: 1) The PFBs are always selected in ascending consecutive order, beginning with PFB 29. 2) - Instead of those PFBs which are not selected any alphanumerical characters are transferred. - Instead of those selected PFBs which are recognised by the HYDOSWEEP equipment as incorrect measurement value 0 (20H 20H 20H 30H) is transferred. - For scaling factor, see associated event record. - In survey mode, it is not the depth that is transferred, but the smoothed depth. MEASUREMENT DATA RECORD TYPE 5 (Sound travelling time to starboard [ahead]) Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Number of PFBs selected by the operator nn 1 0002 2 Sound trav. time (mantissa) PFB 31 nnnn 2 0006 3 Sound trav. time (mantissa) PFB 32 nnnn 2 0010 4 Sound trav. time (mantissa) PFB 33 nnnn 2 0014 5 Sound trav. time (mantissa) PFB 34 nnnn 2 0018 6 Sound trav. time (mantissa) PFB 35 nnnn 2 0022 7 Sound trav. time (mantissa) PFB 36 nnnn 2 0026 8 Sound trav. time (mantissa) PFB 37 nnnn 2 0030 9 Sound trav. time (mantissa) PFB 38 nnnn 2 0034 10 Sound trav. time (mantissa) PFB 39 nnnn 2 0038 11 Sound trav. time (mantissa) PFB 40 nnnn 2 0042 12 Sound trav. time (mantissa) PFB 41 nnnn 2 0046 13 Sound trav. time (mantissa) PFB 42 nnnn 2 0050 14 Sound trav. time (mantissa) PFB 43 nnnn 2 0054 15 Sound trav. time (mantissa) PFB 44 nnnn 2 0058 16 Sound trav. time (mantissa) PFB 45 nnnn 2 0062 17 Sound trav. time (mantissa) PFB 46 nnnn 2 0066 18 Sound trav. time (mantissa) PFB 47 nnnn 2 0070 19 Sound trav. time (mantissa) PFB 48 nnnn 2 0074 20 Sound trav. time (mantissa) PFB 49 nnnn 2 0078 21 Sound trav. time (mantissa) PFB 50 nnnn 2 0082 22 Sound trav. time (mantissa) PFB 51 nnnn 2 0086 23 Sound trav. time (mantissa) PFB 52 nnnn 2 0090 24 Sound trav. time (mantissa) PFB 53 nnnn 2 0094 25 Sound trav. time (mantissa) PFB 54 nnnn 2 0098 26 Sound trav. time (mantissa) PFB 55 nnnn 2 0102 27 Sound trav. time (mantissa) PFB 56 nnnn 2 0106 28 Sound trav. time (mantissa) PFB 57 nnnn 2 0110 29 Sound trav. time (mantissa) PFB 58 nnnn 2 0114 30 Sound trav. time (mantissa) PFB 59 nnnn 2 0118 31 Termination, CR(0DH) LF(0AH) Remarks: 1) The PFBs are always selected in ascending consecutive order, beginning with PFB 31. 2) - Instead of those PFBs which are not selected any alphanumerical characters are transferred. - Instead of those selected PFBs which are recognised by the HYDOSWEEP equipment as incorrect measurement value 0 (20H 20H 20H 30H) is transferred. - For scaling factor, see associated event record. MEASUREMENT DATA RECORD TYPE 6 (Sound travelling time to port [astern]) Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Number of PFBs selected by the operator nn 1 0002 2 Sound trav. time (mantissa) PFB 29 nnnn 2 0006 3 Sound trav. time (mantissa) PFB 28 nnnn 2 0010 4 Sound trav. time (mantissa) PFB 27 nnnn 2 0014 5 Sound trav. time (mantissa) PFB 26 nnnn 2 0018 6 Sound trav. time (mantissa) PFB 25 nnnn 2 0022 7 Sound trav. time (mantissa) PFB 24 nnnn 2 0026 8 Sound trav. time (mantissa) PFB 23 nnnn 2 0030 9 Sound trav. time (mantissa) PFB 22 nnnn 2 0034 10 Sound trav. time (mantissa) PFB 21 nnnn 2 0038 11 Sound trav. time (mantissa) PFB 20 nnnn 2 0042 12 Sound trav. time (mantissa) PFB 19 nnnn 2 0046 13 Sound trav. time (mantissa) PFB 18 nnnn 2 0050 14 Sound trav. time (mantissa) PFB 17 nnnn 2 0054 15 Sound trav. time (mantissa) PFB 16 nnnn 2 0058 16 Sound trav. time (mantissa) PFB 15 nnnn 2 0062 17 Sound trav. time (mantissa) PFB 14 nnnn 2 0066 18 Sound trav. time (mantissa) PFB 13 nnnn 2 0070 19 Sound trav. time (mantissa) PFB 12 nnnn 2 0074 20 Sound trav. time (mantissa) PFB 11 nnnn 2 0078 21 Sound trav. time (mantissa) PFB 10 nnnn 2 0082 22 Sound trav. time (mantissa) PFB 9 nnnn 2 0086 23 Sound trav. time (mantissa) PFB 8 nnnn 2 0090 24 Sound trav. time (mantissa) PFB 7 nnnn 2 0094 25 Sound trav. time (mantissa) PFB 6 nnnn 2 0098 26 Sound trav. time (mantissa) PFB 5 nnnn 2 0102 27 Sound trav. time (mantissa) PFB 4 nnnn 2 0106 28 Sound trav. time (mantissa) PFB 3 nnnn 2 0110 29 Sound trav. time (mantissa) PFB 2 nnnn 2 0114 30 Sound trav. time (mantissa) PFB 1 nnnn 2 0118 31 Termination, CR(0DH) LF(0AH) Remarks: 1) The PFBs are always selected in ascending consecutive order, beginning with PFB 29. 2) - Instead of those PFBs which are not selected any alphanumerical characters are transferred. - Instead of those selected PFBs which are recognised by the HYDOSWEEP equipment as incorrect measurement value 0 (20H 20H 20H 30H) is transferred. - For scaling factor, see associated event record. MEASUREMENT DATA RECORD TYPE 7 (Gyro heading at receiving instant) Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Gyro heading PFB 1 (d=degree) ddd.d 1 0005 2 Gyro heading PFB 6 (d=degree) ddd.d 1 0010 3 Gyro heading PFB 11 (d=degree) ddd.d 1 0015 4 Gyro heading PFB 16 (d=degree) ddd.d 1 0020 5 Gyro heading PFB 21 (d=degree) ddd.d 1 0025 6 Gyro heading PFB 30 (d=degree) ddd.d 1 0030 7 Gyro heading PFB 39 (d=degree) ddd.d 1 0035 8 Gyro heading PFB 44 (d=degree) ddd.d 1 0040 9 Gyro heading PFB 49 (d=degree) ddd.d 1 0045 10 Gyro heading PFB 54 (d=degree) ddd.d 1 0050 11 Gyro heading PFB 59 (d=degree) ddd.d 1 0055 12 Termination, CR(0DH) LF(0AH) Remarks: 1) The heading values refer to the receiving instant of the PFB concerned. MEASUREMENT DATA RECORD TYPE 8 (Output amplitudes to starboard [ahead]) Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Beamformer basic gain PFB 31-34, V'BF (d=dB LSB=6) d 0001 2 Beamformer basic gain PFB 35-38, V'BF (d=dB LSB=6) d 0002 3 Beamformer basic gain PFB 39-42, V'BF (d=dB LSB=6) d 0003 4 Beamformer basic gain PFB 43-46, V'BF (d=dB LSB=6) d 0004 5 Beamformer basic gain PFB 47-50, V'BF (d=dB LSB=6) d 0005 6 Beamformer basic gain PFB 51-54, V'BF (d=dB LSB=6) d 0006 7 Beamformer basic gain PFB 55-58, V'BF (d=dB LSB=6) d 0007 8 Beamformer basic gain PFB 59, V'BF (d=dB LSB=6) d 0008 9 Number of PFBs selected by the operator nn 1 0010 10 Output amplitude PFB 31, UA(v=Veff LSB=2/256) vvv 2 0013 11 Output amplitude PFB 32, UA(v=Veff LSB=2/256) vvv 2 0016 12 Output amplitude PFB 33, UA(v=Veff LSB=2/256) vvv 2 0019 13 Output amplitude PFB 34, UA(v=Veff LSB=2/256) vvv 2 0022 14 Output amplitude PFB 35, UA(v=Veff LSB=2/256) vvv 2 0025 15 Output amplitude PFB 36, UA(v=Veff LSB=2/256) vvv 2 0028 16 Output amplitude PFB 37, UA(v=Veff LSB=2/256) vvv 2 0031 17 Output amplitude PFB 38, UA(v=Veff LSB=2/256) vvv 2 0034 18 Output amplitude PFB 39, UA(v=Veff LSB=2/256) vvv 2 0037 19 Output amplitude PFB 40, UA(v=Veff LSB=2/256) vvv 2 0040 20 Output amplitude PFB 41, UA(v=Veff LSB=2/256) vvv 2 0043 21 Output amplitude PFB 42, UA(v=Veff LSB=2/256) vvv 2 0046 22 Output amplitude PFB 43, UA(v=Veff LSB=2/256) vvv 2 0049 23 Output amplitude PFB 44, UA(v=Veff LSB=2/256) vvv 2 0052 24 Output amplitude PFB 45, UA(v=Veff LSB=2/256) vvv 2 0055 25 Output amplitude PFB 46, UA(v=Veff LSB=2/256) vvv 2 0058 26 Output amplitude PFB 47, UA(v=Veff LSB=2/256) vvv 2 0061 27 Output amplitude PFB 48, UA(v=Veff LSB=2/256) vvv 2 0064 28 Output amplitude PFB 49, UA(v=Veff LSB=2/256) vvv 2 0067 29 Output amplitude PFB 50, UA(v=Veff LSB=2/256) vvv 2 0070 30 Output amplitude PFB 51, UA(v=Veff LSB=2/256) vvv 2 0073 31 Output amplitude PFB 52, UA(v=Veff LSB=2/256) vvv 2 0076 32 Output amplitude PFB 53, UA(v=Veff LSB=2/256) vvv 2 0079 33 Output amplitude PFB 54, UA(v=Veff LSB=2/256) vvv 2 0082 34 Output amplitude PFB 55, UA(v=Veff LSB=2/256) vvv 2 0085 35 Output amplitude PFB 56, UA(v=Veff LSB=2/256) vvv 2 0088 36 Output amplitude PFB 57, UA(v=Veff LSB=2/256) vvv 2 0091 37 Output amplitude PFB 58, UA(v=Veff LSB=2/256) vvv 2 0094 38 Output amplitude PFB 59, UA(v=Veff LSB=2/256) vvv 2 0097 39 Termination, CR(0DH) LF(0AH) Remarks: 1) The PFBs are always selected in ascending consecutive order, beginning with PFB 31. 2) - Instead of those PFBs which are not selected any alphanumerical characters are transferred. - Instead of those selected PFBs which are recognised by the HYDOSWEEP equipment as incorrect measurement any alphanumerical characters are transferred. For recognition of the incorrect measurements see measurement data record 2. MEASUREMENT DATA RECORD TYPE 9 (Output amplitudes to port [astern]) Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Beamformer basic gain PFB 1-2, V'BF (d=dB LSB=6) d 0001 2 Beamformer basic gain PFB 3-6, V'BF (d=dB LSB=6) d 0002 3 Beamformer basic gain PFB 7-10 V'BF (d=dB LSB=6) d 0003 4 Beamformer basic gain PFB 11-14, V'BF (d=dB LSB=6) d 0004 5 Beamformer basic gain PFB 15-18, V'BF (d=dB LSB=6) d 0005 6 Beamformer basic gain PFB 19-22, V'BF (d=dB LSB=6) d 0006 7 Beamformer basic gain PFB 23-26, V'BF (d=dB LSB=6) d 0007 8 Beamformer basic gain PFB 27-30, V'BF (d=dB LSB=6) d 0008 9 Number of PFBs selected by the operator nn 1 0010 10 Output amplitude PFB 29, UA (v=Veff LSB=2/256) vvv 2 0013 11 Output amplitude PFB 28, UA (v=Veff LSB=2/256) vvv 2 0016 12 Output amplitude PFB 27, UA (v=Veff LSB=2/256) vvv 2 0019 13 Output amplitude PFB 26, UA (v=Veff LSB=2/256) vvv 2 0022 14 Output amplitude PFB 25, UA (v=Veff LSB=2/256) vvv 2 0025 15 Output amplitude PFB 24, UA (v=Veff LSB=2/256) vvv 2 0028 16 Output amplitude PFB 23, UA (v=Veff LSB=2/256) vvv 2 0031 17 Output amplitude PFB 22, UA (v=Veff LSB=2/256) vvv 2 0034 18 Output amplitude PFB 21, UA (v=Veff LSB=2/256) vvv 2 0037 19 Output amplitude PFB 20, UA (v=Veff LSB=2/256) vvv 2 0040 20 Output amplitude PFB 19, UA (v=Veff LSB=2/256) vvv 2 0043 21 Output amplitude PFB 18, UA (v=Veff LSB=2/256) vvv 2 0046 22 Output amplitude PFB 17, UA (v=Veff LSB=2/256) vvv 2 0049 23 Output amplitude PFB 16, UA (v=Veff LSB=2/256) vvv 2 0052 24 Output amplitude PFB 15, UA (v=Veff LSB=2/256) vvv 2 0055 25 Output amplitude PFB 14, UA (v=Veff LSB=2/256) vvv 2 0058 26 Output amplitude PFB 13, UA (v=Veff LSB=2/256) vvv 2 0061 27 Output amplitude PFB 12, UA (v=Veff LSB=2/256) vvv 2 0064 28 Output amplitude PFB 11, UA (v=Veff LSB=2/256) vvv 2 0067 29 Output amplitude PFB 10, UA (v=Veff LSB=2/256) vvv 2 0070 30 Output amplitude PFB 9, UA (v=Veff LSB=2/256) vvv 2 0073 31 Output amplitude PFB 8, UA (v=Veff LSB=2/256) vvv 2 0076 32 Output amplitude PFB 7, UA (v=Veff LSB=2/256) vvv 2 0079 33 Output amplitude PFB 6, UA (v=Veff LSB=2/256) vvv 2 0082 34 Output amplitude PFB 5, UA (v=Veff LSB=2/256) vvv 2 0085 35 Output amplitude PFB 4, UA (v=Veff LSB=2/256) vvv 2 0088 36 Output amplitude PFB 3, UA (v=Veff LSB=2/256) vvv 2 0091 37 Output amplitude PFB 2, UA (v=Veff LSB=2/256) vvv 2 0094 38 Output amplitude PFB 1, UA (v=Veff LSB=2/256) vvv 2 0097 39 Termination, CR(0DH) LF(0AH) Remarks: 1) The PFBs are always selected in descending consecutive order, beginning with PFB 29. 2) - Instead of those PFBs which are not selected any alphanumerical characters are transferred. - Instead of those selected PFBs which are recognised by the HYDOSWEEP equipment as incorrect measurement any alphanumerical characters are transferred. For recognition of the incorrect measurements see measurement data record 4. MEASUREMENT DATA RECORD TYPE 10 (Echo duration to starboard [ahead]) Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Echo duration (scaling factor) PFB 31-34, sftau x 1 0001 2 Echo duration (scaling factor) PFB 35-38, sftau x 1 0002 3 Echo duration (scaling factor) PFB 39-42, sftau x 1 0003 4 Echo duration (scaling factor) PFB 43-46, sftau x 1 0004 5 Echo duration (scaling factor) PFB 47-50, sftau x 1 0005 6 Echo duration (scaling factor) PFB 51-54, sftau x 1 0006 7 Echo duration (scaling factor) PFB 55-58, sftau x 1 0007 8 Echo duration (scaling factor) PFB 59, sftau x 1 0008 9 Number of PFBs selected by the operator nn 2 0010 10 Echo duration (mantissa) PFB 31, mtau vvv 3 0013 11 Echo duration (mantissa) PFB 32, mtau vvv 3 0016 12 Echo duration (mantissa) PFB 33, mtau vvv 3 0019 13 Echo duration (mantissa) PFB 34, mtau vvv 3 0022 14 Echo duration (mantissa) PFB 35, mtau vvv 3 0025 15 Echo duration (mantissa) PFB 36, mtau vvv 3 0028 16 Echo duration (mantissa) PFB 37, mtau vvv 3 0031 17 Echo duration (mantissa) PFB 38, mtau vvv 3 0034 18 Echo duration (mantissa) PFB 39, mtau vvv 3 0037 19 Echo duration (mantissa) PFB 40, mtau vvv 3 0040 20 Echo duration (mantissa) PFB 41, mtau vvv 3 0043 21 Echo duration (mantissa) PFB 42, mtau vvv 3 0046 22 Echo duration (mantissa) PFB 43, mtau vvv 3 0049 23 Echo duration (mantissa) PFB 44, mtau vvv 3 0052 24 Echo duration (mantissa) PFB 45, mtau vvv 3 0058 26 Echo duration (mantissa) PFB 47, mtau vvv 3 0061 27 Echo duration (mantissa) PFB 48, mtau vvv 3 0064 28 Echo duration (mantissa) PFB 49, mtau vvv 3 0067 29 Echo duration (mantissa) PFB 50, mtau vvv 3 0070 30 Echo duration (mantissa) PFB 51, mtau vvv 3 0073 31 Echo duration (mantissa) PFB 52, mtau vvv 3 0076 32 Echo duration (mantissa) PFB 53, mtau vvv 3 0079 33 Echo duration (mantissa) PFB 54, mtau vvv 3 0082 34 Echo duration (mantissa) PFB 55, mtau vvv 3 0085 35 Echo duration (mantissa) PFB 56, mtau vvv 3 0088 36 Echo duration (mantissa) PFB 57, mtau vvv 3 0091 37 Echo duration (mantissa) PFB 58, mtau vvv 3 0094 38 Echo duration (mantissa) PFB 59, mtau vvv 3 0097 39 Termination, CR(0DH) LF(0AH) Remarks: 1) x=0 1/1000000 sec x=1 1/100000 sec x=2 1/10000 sec x=3 1/1000 sec x=4 1/100 sec x=5 1/10 sec x=6 1 sec 2) The PFBs are always selected in ascending consecutive order, beginning with PFB 31. 3) - Instead of those PFBs which are not selected any alphanumerical characters are transferred. - Instead of those selected PFBs which are recognised by the HYDOSWEEP equipment as incorrect measurement any alphanumerical characters are transferred. For recognition of the incorrect measurements see measurement data record 2. MEASUREMENT DATA RECORD TYPE 11 (Echo duration to port [astern]) Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Echo duration (scaling factor) PFB 1-2, sftau x 1 0001 2 Echo duration (scaling factor) PFB 3-6, sftau x 1 0002 3 Echo duration (scaling factor) PFB 7-10, sftau x 1 0003 4 Echo duration (scaling factor) PFB 11-14, sftau x 1 0004 5 Echo duration (scaling factor) PFB 15-18, sftau x 1 0005 6 Echo duration (scaling factor) PFB 19-22, sftau x 1 0006 7 Echo duration (scaling factor) PFB 23-26, sftau x 1 0007 8 Echo duration (scaling factor) PFB 27-30, sftau x 1 0008 9 Number of PFBs selected by the operator nn 2 0010 10 Echo duration (mantissa) PFB 29, mtau vvv 3 0013 11 Echo duration (mantissa) PFB 28, mtau vvv 3 0016 12 Echo duration (mantissa) PFB 27, mtau vvv 3 0019 13 Echo duration (mantissa) PFB 26, mtau vvv 3 0022 14 Echo duration (mantissa) PFB 25, mtau vvv 3 0025 15 Echo duration (mantissa) PFB 24, mtau vvv 3 0028 16 Echo duration (mantissa) PFB 23, mtau vvv 3 0031 17 Echo duration (mantissa) PFB 22, mtau vvv 3 0034 18 Echo duration (mantissa) PFB 21, mtau vvv 3 0037 19 Echo duration (mantissa) PFB 20, mtau vvv 3 0040 20 Echo duration (mantissa) PFB 19, mtau vvv 3 0043 21 Echo duration (mantissa) PFB 18, mtau vvv 3 0046 22 Echo duration (mantissa) PFB 17, mtau vvv 3 0049 23 Echo duration (mantissa) PFB 16, mtau vvv 3 0052 24 Echo duration (mantissa) PFB 15, mtau vvv 3 0055 25 Echo duration (mantissa) PFB 14, mtau vvv 3 0058 26 Echo duration (mantissa) PFB 13, mtau vvv 3 0061 27 Echo duration (mantissa) PFB 12, mtau vvv 3 0064 28 Echo duration (mantissa) PFB 11, mtau vvv 3 0067 29 Echo duration (mantissa) PFB 10, mtau vvv 3 0070 30 Echo duration (mantissa) PFB 9, mtau vvv 3 0073 31 Echo duration (mantissa) PFB 8, mtau vvv 3 0076 32 Echo duration (mantissa) PFB 7, mtau vvv 3 0079 33 Echo duration (mantissa) PFB 6, mtau vvv 3 0082 34 Echo duration (mantissa) PFB 5, mtau vvv 3 0085 35 Echo duration (mantissa) PFB 4, mtau vvv 3 0088 36 Echo duration (mantissa) PFB 3, mtau vvv 3 0091 37 Echo duration (mantissa) PFB 2, mtau vvv 3 0094 38 Echo duration (mantissa) PFB 1, mtau vvv 3 0097 39 Termination, CR(0DH) LF(0AH) Remarks: 1) x=0 1/1000000 sec x=1 1/100000 sec x=2 1/10000 sec x=3 1/1000 sec x=4 1/100 sec x=5 1/10 sec x=6 1 sec 2) The PFBs are always selected in descending consecutive order, beginning with PFB 29. 3) - Instead of those PFBs which are not selected any alphanumerical characters are transferred. - Instead of those selected PFBs which are recognised by the HYDOSWEEP equipment as incorrect measurement any alphanumerical characters are transferred. For recognition of the incorrect measurements see measurement data record 4. AUXILIARY DATA RECORD TYPE 1 (Sound velocity profile) Rel.Byte Item Name, Description, Scaling Format Remarks 0000 1 Depth (m=meter) mmmmm 1 0005 2 Sound velocity belonging to item 1 (m=meter/second) mmmm.m 1 0011 3 Depth (m=meter) mmmmm 1 0016 4 Sound velocity belonging to item 3 (m=meter/second) mmmm.m 1 0022 5 Depth (m=meter) mmmmm 1 0027 6 Sound velocity belonging to item 5 (m=meter/second) mmmm.m 1 0033 7 Depth (m=meter) mmmmm 1 0038 8 Sound velocity belonging to item 7 (m=meter/second) mmmm.m 1 0044 9 Depth (m=meter) mmmmm 1 0049 10 Sound velocity belonging to item 9 (m=meter/second) mmmm.m 1 0055 11 Depth (m=meter) mmmmm 1 0060 12 Sound velocity belonging to item 11 (m=meter/second) mmmm.m 1 0066 13 Depth (m=meter) mmmmm 1 0071 14 Sound velocity belonging to item 13 (m=meter/second) mmmm.m 1 0077 15 Depth (m=meter) mmmmm 1 0082 16 Sound velocity belonging to item 15 (m=meter/second) mmmm.m 1 0088 17 Depth (m=meter) mmmmm 1 0093 18 Sound velocity belonging to item 17 (m=meter/second) mmmm.m 1 0099 19 Depth (m=meter) mmmmm 1 0104 20 Sound velocity belonging to item 19 (m=meter/second) mmmm.m 1 0110 21 Termination, CR(0DH) LF(0AH) Remarks: 1) - The sequence of the value pairs corresponds to the sequence on the input mask of the HYDROSWEEP DS console. - Transfer always takes place in pairs. - The only value pairs that are transferred are those for which a sound velocity has been input. - If less than 10 value pairs are input, spaces (20H) are set instead of the value pairs, that have not been input (gaps are filled in). - If more than 10 value pairs are input, the value pairs not included in this record are written in a following record of the same type. 3.2 PRESENTATION LAYER Only ASCII characters (00H to 7FH) are used. 3.3 TRANSPORT LAYER 3.3.1 OVERVIEW The file structure and labelling are as defined by: ISO 1001-1986 and DIN 66029, issue 9/87 and ISO 1001-1979 and DIN 66029, issue 5/79 Any deviations from this are stated as such in the following. The complete basic structure of a magnetic tape recording is shown in Fig. 3-1 (only available in WP-text). 3.3.2 VOLUME The "volume" is the content of a magnetic tape. It consists of a sequence of labels, tape marks, gaps and files. Each volume begins with the label VOL1 (see 3.3.2.1) and ends with two consecutive tape marks. Note: If the operator of the HYDROSWEEP DS equipment does not switch the tape recording off or over in good time before the end of the tape, the recording is interrupted at any place without conforming to ISO 1001 at this place. The receiving system should be able to process such a magnetic tape with appropriate support by the user. Fig. 3 - 1 Structure of Volume (only available in WP-text) 3.3.2.1 Labels The following labels are used: - Volume header label VOL1 - File header label HDR1 - File header label HDR2 - End-of-file label EOF1 - End-of-file label EOF2 The labels have the following contents only (deviations from ISO 1001 in some cases) - VOL1: Places 1 to 4 VOL1 5 to 79 Space 80 4 - HDR1: Places 1 to 4 HDR1 5 to 27 Space 28 to 31 0001 32 to 35 0001 36 to 39 0001 40 and 41 00 42 to 47 A space, followed by 00000 48 to 53 000000 54 Space 55 to 60 000000 61 to 80 Space - HDR2: Places 1 to 15 HDR2D0819200132 16 to 50 Spaces 51 and 52 00 53 to 80 Spaces - EOF1: Places 1 to 4 EOF1 5 to 54 Same as the corresponding fields in HDR1 55 to 60 Number of file blocks which form the file 61 to 80 Same as the corresponding fields in HDR2 - EOF2: Places 1 to 4 EOF2 5 to 80 Same as the corresponding fields in HDR2 Labels are separated from each other by gaps or by tape marks. 3.3.2.2 Tape Marks Standard file tape mark pattern 3.3.2.3 Gaps Interblock gaps, length: 0.6 inch Arrangement see figure 3-1. 3.3.3 FILES Each file consists of one or more blocks. The tape header file consists of one block only. Each file has labels and tape marks (*) assigned to it as follows: HDR1 HDR2 * File * EOF1 EOF2 * The length of the survey section file is variable, and contains a maximum of 32006 records. The length of the tape header file is 152 bytes. The present file is finished and a new survey section file is started - after a tape header file - after input of a new track No. - after no position data have arrived at the HYDROSWEEP DS equipment via the navigation data interface for 2 minutes - 8 hours at the latest after the beginning of the present file - at the latest, when the present file contains 32006 records - at midnight. 3.3.4 BLOCKS Each block consists of a sequence of record control words and records. Each block begins with the block number record, followed immedi- ately by a sequence of identifier records and data records. Each record is preceded by a record control word. Except for the gaps in the tape recording, the blocks of a file are not separated from on another by separator characters. The block length is variable and has a maximum value of 8192 bytes. The recording of a block is started - after the beginning of a file - when the present block is so full that the present record no longer fits into the present block. 3.3.5 RECORDS Each record consists exclusively of items without any further separator characters. The contents of the records is specified in Para 3.1.2.4. A record control word is placed in front of each record. Variable-length records are used (within the meaning of ISO 1001). The maximum length of a record is 128 bytes 3.3.5.1 Record control word (RCW) The RCW consists of four characters and expresses the sum of the length of the following record and of the RCW as a four-digit decimal number (filled up with zeros (30H) on the left). 3.3.6 EXAMPLES Example 1: File arrangement, labels and tape marks on a magnetic tape containing "n" survey section files. VOL1 HDR1 HDR2 * tape header file * EOF1 EOF2 * HDR1 HDR2 * survey section file 1 * EOF1 EOF2 * HDR1 HDR2 * survey section file 2 * EOF1 EOF2 * HDR1 HDR2 * survey section file 3 * EOF1 EOF2 * HDR1 HDR2 * survey section file 4 * EOF1 EOF2 * . . . . . . . . . . HDR1 HDR2 * survey section file n * EOF1 EOF2 ** Example 2: Data of a magnetic tape containing a survey section file in hex and ASCII notation. In this example, the file arrangement, labels and tape marks are as follows: VOL1 HDR1 HDR2 * tape header file * EOF1 EOF2 * HDR1 HDR2 * survey section file 1 * EOF1 EOF2 ** Because of the space requirement in this document, from the survey section only the beginning and one measurement in survey mode and one measurement in calibration mode is shown. $0000 : 56 4F 4C 31 20 20 20 20 20 20 20 20 20 20 20 20 : VOL1 $0010 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0020 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0030 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0040 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 33 : 3 $0000 : 48 44 52 31 20 20 20 20 20 20 20 20 20 20 20 20 : HDR1 $0010 : 20 20 20 20 20 20 20 20 20 20 20 30 30 30 31 30 : 00010 $0020 : 30 30 31 30 30 30 31 30 30 20 30 30 30 30 30 20 : 001000100 00000 $0030 : 30 30 30 30 30 20 30 30 30 30 30 30 20 20 20 20 : 00000 000000 $0040 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0000 : 48 44 52 32 44 30 38 31 39 32 30 30 31 33 32 20 : HDR2D0819200132 $0010 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0020 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0030 : 20 20 30 30 20 20 20 20 20 20 20 20 20 20 20 20 : 00 $0040 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : TAPEMARK $0000 : 30 30 31 32 30 30 30 30 30 31 0D 0A 30 30 31 34 : 0012000001__0014 $0010 : 42 41 4E 44 48 45 41 44 0D 0A 30 31 32 36 41 43 : BANDHEAD__0126AC $0020 : 54 55 41 4C 20 54 41 50 45 20 20 20 20 20 20 20 : TUAL TAPE $0030 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0040 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0050 : 20 20 20 20 20 20 20 20 20 20 4C 41 53 54 20 54 : LAST T $0060 : 41 50 45 20 20 20 20 20 20 20 20 20 20 20 20 20 : APE $0070 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0080 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0090 : 20 20 20 20 20 20 0D 0A : __ TAPEMARK $0000 : 45 4F 46 31 20 20 20 20 20 20 20 20 20 20 20 20 : EOF1 $0010 : 20 20 20 20 20 20 20 20 20 20 20 30 30 30 31 30 : 00010 $0020 : 30 30 31 30 30 30 31 30 30 20 30 30 30 30 30 20 : 001000100 00000 $0030 : 30 30 30 30 30 20 30 30 30 30 30 33 20 20 20 20 : 00000 000003 $0040 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0000 : 45 4F 46 32 44 30 38 31 39 32 30 30 31 33 32 20 : EOF2D0819200132 $0010 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0020 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0030 : 20 20 30 30 20 20 20 20 20 20 20 20 20 20 20 20 : 00 $0040 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : TAPEMARK $0000 : 48 44 52 31 20 20 20 20 20 20 20 20 20 20 20 20 : HDR1 $0010 : 20 20 20 20 20 20 20 20 20 20 20 30 30 30 31 30 : 00010 $0020 : 30 30 32 30 30 30 31 30 30 20 30 30 30 30 30 20 : 002000100 00000 $0030 : 30 30 30 30 30 20 30 30 30 30 30 30 20 20 20 20 : 00000 000000 $0040 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0000 : 48 44 52 32 44 30 38 31 39 32 30 30 31 33 32 20 : HDR2D0819200132 $0010 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0020 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0030 : 20 20 30 30 20 20 20 20 20 20 20 20 20 20 20 20 : 00 $0040 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : TAPEMARK $0000 : 30 30 31 32 30 30 30 30 30 31 0D 0A 30 30 31 34 : 0012000001__0014 $0010 : 4D 45 41 42 50 44 41 54 0D 0A 30 30 34 34 20 20 : MEABPDAT__0044 $0020 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0030 : 20 20 20 20 20 20 31 39 39 31 30 33 32 39 30 39 : 1991032909 $0040 : 32 33 35 30 0D 0A 30 30 31 34 4D 45 41 42 48 59 : 2350__0014MEABHY $0050 : 44 49 0D 0A 30 31 32 36 20 20 20 20 20 20 20 20 : DI__0126 $0060 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0070 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0080 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0090 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $00A0 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $00B0 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $00C0 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $00D0 : 0D 0A 30 30 31 34 4D 45 41 42 43 4F 4D 4D 0D 0A : __0014MEABCOMM__ $00E0 : 30 30 34 32 20 20 20 20 20 20 20 20 20 20 20 20 : 0042 $00F0 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : $0100 : 20 20 20 20 20 20 20 20 0D 0A 30 30 31 34 45 52 : __0014ER $0110 : 47 4E 50 41 52 41 0D 0A 30 30 39 30 2B 31 33 34 : GNPARA__0090+134 $0120 : 2E 36 36 36 37 34 38 30 20 2B 33 32 2E 33 34 31 : .6667480 +32.341 $0130 : 30 36 34 34 31 39 39 31 30 33 32 39 30 39 32 33 : 0644199103290923 $0140 : 35 30 20 20 20 32 33 33 34 31 39 34 2E 39 20 20 : 50 2334194.9 $0150 : 20 20 20 2B 34 2E 31 20 20 20 20 20 2B 32 2E 34 : +4.1 +2.4 $0160 : 42 20 2B 2E 34 30 30 30 30 20 33 36 38 38 2E 35 : B +.40000 3688.5 $0170 : 0D 0A 30 30 31 34 45 52 47 4E 48 59 44 49 0D 0A : __0014ERGNHYDI__ $0180 : 30 30 37 35 2B 31 33 34 2E 36 36 36 37 34 38 30 : 0075+134.6667480 $0190 : 20 2B 33 32 2E 33 34 31 30 36 34 34 31 39 39 31 : +32.34106441991 $01A0 : 30 33 32 39 30 39 32 33 35 30 20 20 20 20 30 20 : 0329092350 0 $01B0 : 30 20 35 2E 39 31 35 30 30 2E 30 30 31 35 30 30 : 0 5.91500.001500 $01C0 : 2E 30 30 2B 30 30 2E 30 30 0D 0A 30 30 31 34 45 : .00+00.00__0014E $01D0 : 52 47 4E 50 4F 53 49 0D 0A 30 30 37 33 2B 31 33 : RGNPOSI__0073+13 $01E0 : 34 2E 36 36 36 39 36 31 36 20 2B 33 32 2E 33 36 : 4.6669616 +32.36 $01F0 : 38 39 32 37 30 31 39 39 31 30 33 32 39 30 39 31 : 8927019910329091 $0200 : 31 31 38 20 20 20 31 31 20 32 2B 30 30 30 30 30 : 118 11 2+00000 $0210 : 2E 2B 30 30 30 30 30 2E 50 4F 53 47 32 20 20 20 : .+00000.POSG2 $0220 : 0D 0A : __ : : : : : : : : : : : : : : : : : : : : : $0760 : 30 30 31 34 45 52 : 0014ER $0770 : 47 4E 4D 45 53 53 0D 0A 30 30 39 36 2B 31 33 34 : GNMESS__0096+134 $0780 : 2E 36 36 36 36 35 36 34 20 2B 33 32 2E 33 33 38 : .6666564 +32.338 $0790 : 30 34 33 32 31 39 39 31 30 33 32 39 30 39 32 35 : 0432199103290925 $07A0 : 30 39 20 20 20 20 31 31 39 31 39 34 2E 33 20 20 : 09 119194.3 $07B0 : 20 20 20 2B 34 2E 30 20 20 20 20 20 2B 32 2E 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20 20 20 20 20 : 00 $0040 : 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 : TAPEMARK TAPEMARK 3.4 PHYSICAL LAYER Medium Magnetic tape Tape Width 1/2 inch (0.498 +/- 0.002 inch) Tape Thickness 1.5 mils Tape Tension 8 oz Reel Diameter 10.5 inches maximum Reel Capacity 2500 feet maximum Beginning of Tape and End of Tape Detectors Photo-electric Recording Mode 9 Track 1600 CPI Phase Encoded to ANSI X3.39-197