ImpactSubsea ISA500 Installation & Operation Manual Download Page 1

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www.impactsubsea.com

Innovative Underwater Products

ISA500

Altitude, Pitch, Roll &

Heading Sensor

Installation & Operation

Manual

Revision:

1.7

Date:

15/01/2020

Impact Subsea Ltd
T. +44 (0) 1224 460 850
E.

[email protected]

www.impactsubsea.com

Summary of Contents for ISA500

Page 1: ...Innovative Underwater Products ISA500 Altitude Pitch Roll Heading Sensor Installation Operation Manual Revision 1 7 Date 15 01 2020 Impact Subsea Ltd T 44 0 1224 460 850 E info impactsubsea co uk W w...

Page 2: ...3 2 1 Acoustics Altitude Measurement Performance 11 3 2 2 Magnetic Disturbers Heading Performance 11 3 2 3 Alignment with Vehicle Pitch Roll Accuracy 12 3 2 4 Heat Sources Temperature Accuracy 13 3 3...

Page 3: ...apability with a high degree of accuracy and stability The availability of heading pitch and roll provides the capability to clearly understand the orientation of the unit at all times This can also b...

Page 4: ...rwater Products 2 0 Specification 2 1 Overview ISA500 Forward Looking Titanium Housing ISA500 Right Angle Acetal Housing 2 2 Dimensions 2 2 1 Forward Looking Housing 2 2 2 Right Angle Housing All dime...

Page 5: ...0 1 Heading Accuracy 1 Resolution 0 1 2 4 Communications Power Physical Communications Power Physical Digital RS232 RS485 F L Weight Air Water R A Weight Air Water 0 5 0 325kg Titanium 0 3 0 11kg Acet...

Page 6: ...ill mate to a SubConn MCIL8F connector cable assembly 3 1 1 Connector Pin Out The standard connector pin out is provided below Male Connector on ISA500 Unit Pin Function Mating Wire Colour 1 0VDC Blac...

Page 7: ...output to use the digital and analogue 0V reference pin 3 1 3 Serial Interface The RS232 and RS485 interface is isolated from the supply and has in line fused protection on the serial lines A prolong...

Page 8: ...3 1 5 RS485 Wiring The RS485 termination resistor is software selectable The digital 0V must be connected on an RS485 interfaces otherwise the voltage potential between one of the A or B lines to grou...

Page 9: ...will blow the surface mount fuses which will require replacement by Impact Subsea or an approved distributor The TTL input can be used to trigger a ping update the analogue output and transmit the us...

Page 10: ...he serial interface setting will revert back to the last configuration 3 1 8 Connector Mating When mating the cable to the SubConn connector to maximise the life of the connector it is important to ob...

Page 11: ...ment Performance The transducer must have a clear view of the seabed Any items which obstruct this view may result in erroneous Altitude measurements If entirely obstructed no Altitude readings will b...

Page 12: ...as far as possible from magnetically active materials 3 2 3 Alignment with Vehicle Pitch Roll Accuracy When mounting vertically the ISA500 should be mounted with the transducer facing downwards to th...

Page 13: ...n body to enable a clamp to be tightened securely around the unit The right angled unit has a 46mm recess Ideally a non metallic clamp should be used however in the event that this is not possible eff...

Page 14: ...ned for use with a PC running the Windows 7 8 or 10 operating system and require Microsoft s net framework 4 5 2 or above seaView uses an advance framed binary protocol to communicate to the ISA500 an...

Page 15: ...figured to operate in one or both of these modes at the same time ISA500 s with the HMRU option make use of the same interrogated and autonomous mechanises to output heading pitch and roll data over t...

Page 16: ...ading High correlation Weak signal but likely a good reading Ideal conditions very trust worthy readings These values can also give some insight for adjusting the transmit power If the energy level is...

Page 17: ...wth and salt deposits If required a light detergent such as that used to clean household dishes can be used DO NOT USE SOLVENTS TO CLEAN THE UNIT Following rinsing the unit should be dried with a clot...

Page 18: ...eee c cccc tt t C xx CR LF ddd ddd distance in meters from the transducer face to the target e eeee energy level 0 to 1 c cccc correlation factor 0 to 1 tt t temperature in Celsius xx NEMA standard ch...

Page 19: ...n factor 0 to 1 another ddd ddd e eeee c cccc reading xx NEMA standard checksum Example string format for 2 echoes ISAMD tt t C ddd ddd e eeee c cccc ddd ddd e eeee c cccc xx CR LF ID5 Tritech 3P3 Str...

Page 20: ...dd dd CR LF or when there s no echo return Rdd ddE CR LF dd dd distance in meters from the transducer face to the target ID10 Valeport String format PRVAT dd ddd M 0000 000dBar xx CR LF dd dd distance...

Page 21: ...face to the target ID15 Impact Subsea time and temperature String format ISATS dddddd us tt t C xx CR LF dddddd time in micro seconds to target tt t temperature in Celsius xx NEMA standard checksum ID...

Page 22: ...of multi echoes that can be detected ISAMD tt t C dddddd dddddd dddddd xx CR LF ID18 Impact Subsea temperature and multi echo time with energy and correlation String format ISAMV tt t C dddddd e eeee...

Page 23: ...rs ID20 NMEA SDDPT String format SDDPT x x x x hh First x x distance in meters from the transducer face to the target Second x x Offset from transducer positive means distance from transducer to water...

Page 24: ...the orientation of a 3D body in a 4 dimensional world This avoid the associated gimbal lock singular problems with conventional heading pitch roll String format ISQUA w x y z xx CR LF w floating poin...

Page 25: ...x CR LF a aaa Accelerometer reading X then Y then Z g ggg Gyroscope reading X then Y then Z m mmm magnetometer reading X then Y then Z xx NEMA standard checksum All values are floating point numbers S...

Page 26: ...es are used by the ISA500 due to their high efficiency in travelling long distances through water Through water acoustics can travel far greater distances than signals in the light or radio frequency...

Page 27: ...assume a speed of sound of 1 500m s For example if an acoustic pulse takes 0 1 seconds to return to the ISA500 after being sent we can calculate its round trip travel distance as Distance Speed x Tim...

Page 28: ...fundamental equation which is at the heard of all hydro acoustic systems SL TL NL DI DT SL Source Level TL Transmission Loss NL Noise Level DI Directional Index DT Detection Threshold 7 2 1 Source Lev...

Page 29: ...e Level NL Noise level is environment specific which can often be the reason for acoustic systems experiencing different levels of performance in different locations or even when operating at differen...

Page 30: ...Detection Threshold is a property of the acoustic system It is defined as the minimal signal to noise ratio required in order to detect the acoustic signal The threshold can be lowered by minimising...

Page 31: ...n MEMS sensor to provide you with a Compass Heading and spirit level Pitch Roll The ISA500 makes use of accelerometers gyroscopes and magnetometer data fused in a digital algorithm to provide heading...

Page 32: ...or repair the Product at no charge using new or refurbished replacement parts Replacement or repair is at the discretion of Impact Subsea Ltd How long does the coverage last The Warranty Period for t...

Page 33: ...ensure that a number of engineers are copied into your support request and will ensure a prompt response When contacting our Support team please provide the following details of the ISA500 Serial Numb...

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