Specifications and Dimensions

Transcription

1 Specifications and Dimensions Specifications and Dimensions Appendix E E-1 Introduction A brief review of AD operation may help you understand the specifications listed in this section. NOTE The specifications and dimensions listed in this section are subject to change without notice. The AD emits an acoustic pulse called a ING. Scatterers that float ambiently with the water currents reflect some of the energy from the ping back to the AD. The AD uses the return signal to calculate a velocity. The energy in this signal is the echo intensity. Echo intensity is sometimes used to determine information about the scatterers. The velocity calculated from each ping has a statistical uncertainty; however, each ping is an independent sample. The AD reduces this statistical uncertainty by averaging a collection of pings. A collection of pings averaged together is an ensemble. The AD s maximum ping rate limits the time required to reduce the statistical uncertainty to acceptable levels. The AD does not measure velocity at a single point; it measures velocities throughout the water column. The AD measures velocities from its transducer head to a specified range and divides this range into uniform segments called depth cells (or bins). The collection of depth cells yields a profile. The AD produces two profiles, one for velocity and one for echo intensity. The AD calculates velocity data relative to the AD. The velocity data has both speed and direction information. If the AD is moving, and is within range of the bottom, it can obtain a velocity from returns off the bottom. This is called bottom-tracking. The bottom-track information can be used to calculate the absolute velocity of the water. The AD can get absolute direction information from a heading sensor. Table E-1 through Table E-18 lists the specifications for all roadband DR/S AD models. About the specifications: a. All these specifications assume minimal AD motion - pitch, roll, heave, rotation, and translation. DR/S Technical Manual (March 1997) E-1

2 Appendix E b. Except where noted, this specification table applies to typical setups and conditions. Typical setups use the default input values for each parameter (exceptions include ings er Ensemble and Number of Depth ells). Typical conditions assume uniform seawater velocities at a given depth, moderate shear, moderate AD motion, and typical echo intensity levels. c. The total measurement error of the AD is the sum of: Long-term instrument error (as limited by instrument accuracy). The remaining statistical uncertainty after averaging. Errors introduced by measurement of AD heading and motion. d. ecause individual pings are independent, the statistical uncertainty of the measurement can be reduced according to the equation: Statistical uncertainity for one ping number of pings E-2 roadband AD Specifications Table E-1. Available roadband Models Model Frequency 20º oncave 30º oncave 20º onvex 30º onvex DR/S 75 X X 150 X X 300 X X 300/600* X X 600 X X 600* X X 1200 X X X X DR/S 5-EAM 600 X X *Special (smaller ceramic) Table E-2. roadband Frequency options System (khz) Actual (Hz) 76, , , ,400 1,228,800 E-2.1 Water Velocity Measurements Relative to the AD Table E-3. General roadband Water Velocity Measurement Specifications Accuracy (long-term) 0.2% of measured velocity ±0.2 cm/s Number of depth cells 1 to 128 cells Depth cell size 5 to 3200 centimeters ( 2 inches to 105 feet) E-2 DR/S Technical Manual (March 1997)

3 Specifications and Dimensions Velocity range ±10 m/s (horizontal) Table E-4. roadband recision (cm/s) Depth cell size (m) Water-current velocity precision is the statistical uncertainty (1σ) of the horizontal velocities for single pings when operating in the normal mode. The precision will decrease proportional to the square root of the number of pings averaged together. Higher precision profiling modes can be used when current shear and instrument dynamics are low. Table E-5. roadband Minimum Time etween ings (seconds) System frequency (khz) ased on 1.57 ms nominal bottom-track range DR/S Technical Manual (March 1997) E-3

4 Appendix E Table E-6. roadband Maximum rofiling Range (meters) Frequency (khz) eamwidth (degrees) Depth cell size (m) High-power mode Low-power mode Ranges are for systems using the indicated frequency, transducer beamwidth, depth cell size, and power mode in typical water conditions. Range decreases about 10% each time cell size is halved. Table E-7. roadband Minimum Range to Start of First Depth ell (meters) System frequency (khz) Table E-8. roadband Loss of rofiling Range Near a oundary 30 beam angle 13.4% of range to boundary + one depth cell 20 beam angle 6% of range to boundary + one depth cell NOTE: AD pitch and roll may reduce range. E-4 DR/S Technical Manual (March 1997)

5 Specifications and Dimensions E-2.2 AD Velocity Measurements Relative to the ottom and ottom Depth Measurements Table E-9. roadband General ottom-track Specifications Accuracy (long-term) recision (cm/s) 0.2% of measured velocity ±0.2 cm/s V + (a V)/(1 + baf), where: a = 1 cm/s b = khz 1 m 1 A = Altitude in Meters F = System Frequency in khz V = Velocity in cm/s Altitude accuracy (meters) Velocity range 1% of measured altitude ±120/Frequency (khz) ± 10 m/s (horizontal) Note: bottom-track velocity precision is the statistical uncertainty (1σ) of the horizontal velocities for single pings when operating in the normal mode. The precision will decrease proportional to the square root of the number of pings averaged together. Table E-10. roadband Maximum and Minimum Altitudes (meters) Frequency (khz) eamwidth (degrees) Max. altitudes High-power mode Low-power mode Min. altitudes Altitudes are for systems using the indicated frequency, transducer beamwidth, and power mode in typical seawater conditions. E-2.3 Echo Intensity Measurements Table E-11. Accuracy roadband Echo Intensity Specifications ±2 d rofiling range (meters) Number of depth cells Depth cell size Dynamic range 85% of water-profiling range 1 to 128 cells 5 to 3200 centimeters ( 2 inches to 105 feet) 80 d DR/S Technical Manual (March 1997) E-5

6 Appendix E E-2.4 Table E-12. Interface Input data format Data ommunication S data storage capacity (Standard) S data storage capacity (Optional) roadband Data ommunications Specifications Serial communications at 300 to 115,200 baud using two RS-422 cables, or one RS-232 cable and one RS-422 cable (see Appendix-A) ASII commands (see Appendix-) 10 to 80 megabytes of solid-state memory 90 to 320 megabytes of solid-state memory. This optional unit fits into the power module section of the S-AD and takes up to 72 millimeters of space. You may use either the standard solid state memory or the optional memory pack. The units may not be combined. E-2.5 ower Table E-13. roadband ower Specifications Deck box external power 20 to 60 VD 98 to 264 VA, Hz 12 VD External (DR models) 20 to 60 VD Internal (S models) Alkaline battery packs supplying 45 to 60 VD Table E-14. roadband Dissipation (watts) Source / Mode Standby Operate VD - High-power VD - Low-power VD A - High-power A - Low-power E-6 DR/S Technical Manual (March 1997)

7 Specifications and Dimensions E-2.6 Table E-15. Sensors roadband Internal Sensor Specifications Sensor Accuracy Resolution Heading *±5 0.2 Tilt ± Temperature ± Depth ±1% FS 0.03% FS 10 to 10,000-m full-scale (fs) depth sensors available. Heading accuracy assumes you are working in an environment where the horizontal magnetic field strength is 10,000 to 40,000 nt (nano-teslas) and the operational temperature of External Sensors - RS-485 serial interface at baud (future) E-2.7 Table E-16. Temperature Humidity Environmental roadband Environmental Specifications Operating: -5 to +35 Storage : -50 to +80 Must be non-condensing Vibration Meets MIL-STD-167-1, type 1 Shock DR/S depth ratings 20 g static 200 m, 1000 m, 3000 m, or 6000 m DR/S Technical Manual (March 1997) E-7

8 Appendix E E-2.8 roadband AD hysical haracteristics NOTE See outline drawings for dimensions and weights for specific AD frequencies. TRANSDUER TRONIS TRONIS HASSIS OWER MODULES 4-EAM SEE OUTLINE DRAWINGS AND WEIGHT TALE (ONAVE) (ONVEX) WEIGHT = 1.45 kg (3.2 lbs) WEIGHT = 3.13 kg (6.9 lbs) EXANDALE MAX WEIGHT= 4.7 kg (10.5 lbs) TRANSDUER TRONIS TRONIS HASSIS OWER MODULES 5-EAM SEE OUTLINE DRAWINGS AND WEIGHT TALE kg (3.2lbs) kg (6.9 lbs) EXANDALE MAX WEIGHT = 4.7 kg (10.5 lbs) Figure E-1. roadband Electronics hassis Dimensions Overview E-8 DR/S Technical Manual (March 1997)

9 Specifications and Dimensions Table E-17. roadband ower Module Dimensions and Weights Description Width (mm) Weight (kg) apacitor bank Hi-ower module ower conditioner module (earlier Revision ADs) ower conditioner module Single battery pack module Double battery pack module Triple battery pack module Single battery pack (earlier revision ADs) Optional memory module (up to 160 M) Optional memory module (up to 320 M) DR-AD Slider late (earlier revision ADs) S-AD Slider plate (earlier revision ADs) Latch Lock bracket N/A Slider rail N/A /mm NOTE See configuration drawings for power module locations. 483 mm (19.0 in.) mm (17.5 in.) 88.9 mm (3.5 in.) (FRONT) (RIGHT SIDE) Figure E-2. DR-AD Deck ox Dimensions (Earlier Revision Deck ox) NOTE See outline/installation drawing for dimensions of present deck box. DR/S Technical Manual (March 1997) E-9

10 Appendix E E-2.9 roadband AD Standard onfiguration Drawings S-AD users may convert their systems to a DR-AD configuration by installing the following components: DR-AD end cap DR-AD slider plate (if your AD uses a slider plate) apacitor banks See the configuration drawings for standard configurations. The order in which the modules are placed is important: Do not change. LEGEND = OWER ONDITIONER = ATTERY AK N = ART NUMER HIGH OWER TRONIS N -02 TRONIS A ANK A ANK A ANK A ANK HIGH A A OWER ANK ANK N -02 LUE WATER 75 S ONFIGURATION SHOWN Number of battery packs ressure ase Length (mm) LUE WATER 75 WITH DR ONVERSION DR ONFIGURATION SHOWN Minimum ressure ase Length = 1060mm HIGH TRONIS OWER N -02 A TRONIS ANK A ANK HIGH A OWER ANK N -02 Figure E-3. LUE WATER 150 S ONFIGURATION SHOWN Number of battery packs ressure ase Length (mm) lue Water Systems Standard onfiguration LUE WATER 150 WITH DR ONVERSION DR ONFIGURATION SHOWN Minimum ressure ase Length = 1060mm E-10 DR/S Technical Manual (March 1997)

11 Specifications and Dimensions LEGEND = OWER ONDITIONER = ATTERY AK N = ART NUMER TRONIS A TRONIS ANK A ANK A ANK HIGH OWER N -02 ONTINENTAL SHELF 150 S ONFIGURATION SHOWN Number of battery packs ressure ase Length (mm) ONTINENTAL SHELF 150 WITH DR ONVERSION DR ONFIGURATION SHOWN Minimum ressure ase Length = 830 (mm) TRONIS A TRONIS ANK ONTINENTAL SHELF 300 S ONFIGURATION SHOWN Number of battery packs ressure ase Length (mm) ONTINENTAL SHELF 300 WITH DR ONVERSION DR ONFIGURATION SHOWN Minimum ressure ase Length = 830 (mm) TRONIS TRONIS ONTINENTAL SHELF 1200/600 S ONFIGURATION SHOWN Number of battery packs ressure ase Length (mm) ONTINENTAL SHELF 1200/600 WITH DR ONVERSION DR ONFIGURATION SHOWN Minimum ressure ase Length = 830 (mm) Figure E-4. ontinental Shelf Systems Standard onfiguration DR/S Technical Manual (March 1997) E-11

12 Appendix E LEGEND = OWER ONDITIONER = ATTERY AK N = ART NUMER TRONIS A A A A A A ANK ANK ANK ANK ANK ANK HIGH OWER N -03 DR75 TRONIS A ANK A ANK A ANK HIGH OWER N -03 DR150 TRONIS A ANK DR300 TRONIS DR2400/1200/600 Figure E-5. Direct-Reading Systems Standard onfigurations E-12 DR/S Technical Manual (March 1997)

13 Specifications and Dimensions LEGEND = OWER ONDITIONER = ATTERY AK N = ART NUMER TRONIS ALL ONTINENTAL SHELF SYSTEMS Number of battery packs ressure ase Length (mm) TRONIS HIGH OWER N-02 LUE WATER 75/150 Number of battery packs ressure ase Length (mm) Figure E-6. Self-ontained Systems Standard onfiguration DR/S Technical Manual (March 1997) E-13

14 Appendix E E-2.10 Outline Installation Drawings Table E-18. Outline Installation Drawings Description Drawing Number DR/S 1200kHz 20 oncave DR/S 1200kHz 30 oncave DR/S 1200kHz 20 onvex DR/S 1200kHz 30 onvex DR/S 600kHz 20 onvex, small ceramic DR/S 600kHz 30 onvex, small ceramic DR/S 600kHz 20 onvex DR/S 60kHz 30 onvex DR/S 300/600kHz 20 oncave, small ceramic DR/S 300/600kHz 30 oncave, small ceramic DR/S 300kHz 20 onvex DR/S 300kHz 30 onvex DR/S 150kHz 20 onvex DR/S 150kHz 30 onvex DR/S 75kHz 20 onvex DR/S 75kHz 30 onvex DR/S 600kHz 30 onvex, 5-beam DR/S 600kHz 20 onvex, 5-beam DR/S 1000 meter ressure ase DR/S 3000/6000 meter ressure ase DR/S 90 Adapter Elbow DR Deck ox E-14 DR/S Technical Manual (March 1997)