PORT LF Small Diameter (SD)
Contents
1. 6 1 2 O Ring Considerations The end cap assemblies of the PORT use a standard o ring to provide watertight integrity to the electronics housing Under normal usage proper care and lubrication the o ring should provide several years of usage However like the batteries the o ring is an inexpensive component which is absolutely critical to the successful operation of the entire system It is good practice to replace the o rings periodically depending on frequency of use It is essential to inspect the o rings and sealing surfaces before and after each deployment Prepare the sealing surfaces for assembly by cleaning with a lint free towel or swab moistened if needed with alcohol Inspect for scratches or nicks which could impair the o ring s ability to provide a seal Apply a light coat of o ring lubricant typically silicone based grease to the housing bore and o ring to facilitate insertion of the end cap Make sure the lubricant is compatible with Nitrile rubber Inspect the o ring for damage such as tears dimples or other defects in the rubber Replace any o ring that is questionable or old Lightly coat the o ring with lubricant Protect o rings when stretching them over large diameters i e cover diameter with plastic sleeve if needed CAUTION Applying too much lubricant to the o ring can compromise the seal 6 1 3 Additional O Rings There are additional o rings that provide the watertight integrity to the housing Th2. Push Off Release Transponder 0010189 REV C Xi TABLE OF CONTENTS ATTENTION READ THIS FIRST sved iv HARDWARE VARIATIONS AND COMPATIBILITY sssisscnsccavacsesiasassvacnswssdsvasagunancawavadteassssworsyuctssnaiarninenenienss V ABOUT THIS DOCUMENT us sdenasiulniiuadutitu usi Sew niaN A raduN UE nasi c E aM EN rud vi Purpose ofthis III Ic Ros vi Kien RR E vi Warnings Cautions and NOLES EE t stum t istut obo tM DuPv oix UP DO Mid ec EET vi WARRANTISPIATEMENT nuni une din E ie E uud saME Ml nE et UTE esM vii RETURNED MATERIAL AUTHORIZATION iissavstastinkdvenkE eu NR RE uU A RE REED NN EEE s ORTA EUN RARV NR A AT EDK ES M REEF Os2S viii CUSTONIER SERVICE m Ix COMPANY BACKGROUND eres X TABLE OF CONTENTS reel xi Bie dlc loe E m xiii EG c xiv BT EY cR 1 1 SEIN PENIS aged aeons 2 1 MENNENE 2 1 PP ri MNT 2 2 2 3 Acoustic SEN 2 2 2 34 C mmand NE EE pRP ERN MEMU EE 2 2 2 2 2 BACS TN 2 3 2 3 3 BACS Command Coding Lauvsnes oda aD Fus EES E ga d ups 2 3 2 3 4 Standard Command FULTCELIOTIS i eooocua sa abs lades e teen ss bae ebne s capat addc eatad eto aet Da snas Gu peR dd intuitu abus 2 3 235 Transponder FEIGT Sv 2 4 2 4 Power Supply SpecifiCatiOFiS sa 2 4 2 5 Environmental Specifications usse eee nnns annes aene naa
3. Edgetech PUSH OFF RELEASE TRANSPONDER Low Frequency Small Diameter USER HARDWARE MANUAL 0010189 REV C September 2015 EdgeTech 4 Little Brook Road West Wareham MA 02576 Tel 508 291 0057 Fax 508 291 2491 EdgeTech Push Off Release Transponder 0010189 REV C The information figures and specifications in this manual are proprietary and are issued in strict confidence on condition that they not be copied reprinted or disclosed to a third party either wholly or in part without the prior written consent of EdgeTech Any reproduction of EdgeTech supplied software or file sharing is strictly prohibited Copyright 2015 by EdgeTech All rights reserved V Edgelech ATTENTION READ THIS FIRST All personnel involved with the installation operation or maintenance of the equipment described in this manual should read and understand the warnings and cautions provided below CAUTION This equipment contains devices that are extremely sensitive to static electricity Therefore extreme care should be taken when handling them Normal handling precautions involve the use of anti static protection materials and grounding straps for personnel WARNING High Voltage may be present in all parts of the system Therefore use caution when the electronics are removed from their containers for servicing CAUTION Operation with improper line voltage may cause serious damage to the equip
4. guarded commands these are used for critical functions such as release V Edgelech MAINTENANCE The PORT requires minimal maintenance Pre deployment preparations and checks and post deployment cleaning will fulfill most of the maintenance requirements The important tasks are battery replacement O ring care and maintenance and general cleaning inspection and lubrication of operational elements 6 1 Battery Replacement The PORT uses a welded battery pack made up of high quality AA alkaline batteries see Figure 2 2 for orientation 6 1 1 Battery Replacement Procedure WARNING If the underwater unit has been deployed there is the possibility of internal pressurization Exercise extreme caution when opening the unit To replace the batteries 1 2 Open the instrument referring to sub section 4 1 1 Separate the transducer end from the housing by gently pulling them apart Be careful not to scratch the housing throat when pulling the assembly from the tube Disconnect the motor cable from the electronics assembly JP2 Remove the two screws that hold each of the battery pack retaining brackets Remove the old battery pack and properly dispose of it Insert new battery pack on the plate and install the retaining brackets Be sure to include the small pattern flat and lock washers on the screws Assemble the instrument refer to sub section 4 1 3 V Edgelech 6 2 SECTION 6 MAINTENANCE OE
5. Epoxy painted Release Type Mechanical motor driven push off Table 2 1 Mechanical Specifications V Edgelech 2 2 SECTION 2 SPECIFICATIONS 2 2 Printed Circuit Board PCB A photo of the PCB connectors on the PORT LF s board are shown in Figure 2 1 RELEASE MOTOR CABLE TO JP2 o a gt p gt iz y BE o i f D p oO Tw AN gt gt Up TGS Oe lt gt TRANSDUCER BATTERY CABLE CABLE TO JP1 TO JP3 Figure 2 1 PCB Connectors TI EEE 2 3 Acoustic Specifications The acoustic specifications for the PORT LF unit are described in the following sub sections 2 3 1 Command Receiver Specifications for the command receiver are as follows SPECIFICATION VALUE Sensitivity 78 dB re 1 Pa Multi stage band pass with hard limited output Receiver Type 2 000 Hz 300 Hz Bandwidths Pulse Width 22 ms Period 250 ms Total Command Time 9 seconds Total Lock Out Time 14 s re beginning Commands Per Tone Pair 2 000 Table 2 2 Command Receiver Specifications Push Off Release Transponder 0010189 REV C 2 3 2 BACS Command Structure The BACS command structure consists of two 8 bit words separated by a 5 sec interval Each word is comprised of 8 bits from a 16 bit command The 16 bit command is a 15 bit 11 block cyclic code with an overall parity bit appended to the end to form a 16 bit code with a minimum Hamming distance of 4 bits Additionally two transition
6. SECTION 6 MAINTENANCE V Edgelech BACS SERIES CODING BACS codes are 16 bits long with 11 bits of information Specifically each code is referred to as a 15 11 block cyclic code with an overall even parity bit appended to the end The information bits occupy the first 11 bit positions the cyclic parity or redundant bits occupy the four positions after the information bits and the overall parity bit occupies the last position This particular code has good mathematical structure The parity bits are easily calculated and a minimum Hamming distance of four bits exists between any two codes The command timing is as follows 1 8 bits are sent with a period of roughly 250 ms and a pulse width of 22 ms 2 Aword decode interval is 2 718 seconds 3 Following the first decode interval a 40 ms detection window is open 4 Ifa detection occurs in the window a second word decode interval occurs 5 During any of the sample gate intervals if both DO and D1 are present or if neither one is present then a command abort will occur and the command will not go through From the 11 information bits there are approximately 2000 unique commands for each tone pair employed Commands composed of equal or repeated words are excluded as are some containing very few transitions Since there are six tone pairs available refer to Table 2 3 over 12 000 unique commands exist Certain ranges of these codes which are rich in transitions are designated as
7. This prevents running the batteries down if it is left enabled by mistake The ping counter is reset to zero each time it is enabled When disabled the transponder will not reply when interrogated This ensures that the unit will not interfere with nearby instruments and that no battery energy will be wasted replying to spurious noise sources during the deployment The transponder Enable Disable command has no effect on the Release command The RELEASE command causes the mechanism on the instrument to rotate and to push off the threaded release link While releasing the PORT will ping once for every rotation of the release shaft This provides confirmation that the shaft is turning and the release link is being pushed off Once the threaded link is completely pushed out the instrument is free The RELEASE command is not affected by the state of the transponder function enabled or disabled V Edgelech SPECIFICATIONS This section describes the specifications for the PORT LF SD 2 1 Mechanical Specifications Mechanical specifications for the PORT LF SD are as follows Depth Rating 3 500 m 3 828 yd Maximum Release Threshold 250 kg 550 Ib Maximum Static Load 750 kg 1 650 Ib Overall Length 71 8 cm 28 3 in Main Diameter 10 6 cm 4 2 in Weight in Water 2 5 kg 5 6 Ib Weight in Air 7 2 kg 15 9 Ib Housing Material Type 6061 Aluminum Other Materials Delrin Nylon Kynar Ultem Neoprene 316SS Finish Hard anodized and
8. 0007200 2 Anode 0007318 1 Adaptor assembly purge port 0002332 1 Purge port adaptor O ring 0005920 Table 6 1 Common Spares V Edgelech 6 4 MAINTENANCE A photo of some of the basic PORT LF SD parts is shown below Release Link Anti Rotation Block Release Shaft Figure 6 1 PORT LF SD Basic Parts Push Off Release Transponder 0010189 REV C APPENDIX A POP UP OPTION The PORT LF SD can be shipped with an optional pop up option This allows the unit to float to the surface upon detaching from a payload EdgeTech Figure A 1 Pop Up Option A 1 Assembly PORT LF Pop Up system is shipped with one 1 bottom line holding cup one 1 top flotation cup one 1 PORT acoustic release and a package containing all necessary assembly hardware Tools needed for assembly are a 1 8 hex key allen wrench a flat head screwdriver and a 9 16 socket wrench set To assemble the Pop Up 1 Install top collar by inserting 316SS point set screw through the threaded hole into the notch where the pressure housing meets the transducer end cap 2 The collar will fit in the same position regardless if the MF flush 3 5 transducer cap or LF 4 2 exposed potting cap It is recommended the tapped hole in the collar should be offset away from the end cap although reversal will not prevent proper release The set screw should be screwed all the way in pushing the two ends of the closure rod apart DO NOT OVERTIGH
9. 50 uA Design Life O C 1 25 years Design Life O C 10 000 replies 10 ms Table 2 6 Power Supply Specifications Push Off Release Transponder 0010189 REV C Figure 2 2 Battery Pack Orientation 2 5 Environmental Specifications The environmental specifications for the PORT LF SD unit are concerned with temperature as shown below TEMPERATURE VALUE Operating 10 C to 40 C 14 F to 104 F Storage Batteries Removed 20 C to 60 C 4 F to 140 C Table 2 7 Environmental Specifications Temperature V Edgelech 2 6 SECTION 2 SPECIFICATIONS 2 6 Mechanical Drawings Mechanical drawings for the PORT LF SD is shown below 2827 2721 43 48 id Figure 2 3 PORT LF SD Mechanical Drawing Push Off Release Transponder 0010189 REV C INSTALLATION This section contains the information relative to the basic set up of EdgeTech s Push Off Release Transponder PORT LF SD including important details concerning the orientation of the unit on a mooring structure Note that the transponder will operate in any orientation However specifics of the intended deployment will mandate special installation concerns 3 1 Acoustic Efforts should be made to ensure that there is a clear acoustic path between the PORT LF SD transducer and the source typically a dunking transducer from a deck unit Structural elements of a mooring system which have significantly diffe
10. TEN The collar should be rigidly affixed when set screw is properly tightened Edgelech A 2 POP UP Figure A 2 Installing the Top Mating Collar 3 Slide included O Ring flexible soacer down the release and rest on mating collar 4 The release is mated to the top cup by first sliding the release down the open channel in the flotation such that the top collar lies flush with the top of the cup Figure A 3 Inserting Release into the Top Cup from Above 5 The mating to the top cup is completed by installing the thick anti slip ring around the release and securing is with the included 316SS hose clamp DO NOT OVERTIGHTEN Over torqueing can squeeze the housing out of round compromising the o ring seal The anti slip ring functions as a catch in the unlikely case the pop up is over turned on ascent it holds no load during standard operation Push Off Release Transponder 0010189 REV C Figure A 4 Installing Anti Slip Ring 6 Fill bottom cup with desired line weight using proper line packing procedure Coiling the line around the center tube should be avoided as it promotes binding during the rapid pay out after release Affix one end to the nylon pad eye protruding from the flotation wind the other end out through the lip notch for future attachment to a secure fixture on bottom mooring It recommended to use light duty tie wraps to secure line tightly to the outside of the cup utilizing the small holes linin
11. UNE LENGTH SET TO 2X OPERATING DEPTH 28 45 21 5 16 HOG CHAIN MOORING POINT UNLESS OTHERWISE NOTED aique nd id DIMENSIONS ARE IH INCHES WEST WAREHAM HA 02575 TEL 508179 1 sr moen DECIMALS OnE ELEC Lem sx ewm pss 0015749 A fy Figure A 6 PORT LF SD 200M Pop up Drawing e Q S SV
12. ansducer with no obstructions to the acoustic path Depending on the environment some experimentation may be necessary to find a suitable location 4 3 2 Tests For the following tests it will be necessary to have the proper six digit commands unique to the unit being tested If it appears that commands are not getting through verify that the serial number of the unit being tested matches that on the sheet of command codes 1 Using a deck unit ascertain whether the PORT LF SD is enabled or disabled by interrogating it if the unit has just be powered up it will be enabled Unless otherwise specified the PORT will be shipped from EdgeTech with the interrogate frequency tuned to 11 kHz and the reply frequency set to 12 kHz 2 Using the deck unit send the ENABLE command The instrument should reply with a series of pings based on the orientation tilt in the electronics assembly 3 Next send the RELEASE command and the shaft should rotate through seven rotations and send 1 ping for each complete rotation During a successful release cycle the system will transmit 7 Push Off Release Transponder 0010189 REV C 4 5 E pings The system does not send status for the release command If the shaft fails to turn 7 times or the cycle is somehow interrupted then the system will send the standard status message 4 Interrogate the instrument using the deck unit set at the appropriate interrogate frequency and tuned to the proper reply fre
13. ased paints should not be used Tin based paints may be used Furthermore using plenty of grease is an important consideration for instruments deployed for long periods Apply grease to the threaded release shaft EdgeTech recommends using a silicone based grease V Edgelech 3 2 SECTION 3 INSTALLATION 3 3 Status Reply The PORT LF SD is equipped with sensors that monitor the tilted or not tilted orientation of the system and release shaft rotation This information allows the unit to send a coded status reply based on the instruments orientation and to emit one ping each time the release shaft completes a rotation The tilt status is useful for ascertaining whether the mooring or platform that has been deployed and or has landed as planned At the end of a deployment the information is useful in determining whether forces such as strong currents or trawl activity have affected the mooring or platform The status reply indicates one of two states e upright within 45 of upright e tilted more than 45 from upright After a disable or enable command has been received the unit transmits a series of pings encoded as follows PATTERN STATUS 15 pings at 2 second intervals upright 7 pings at 2 second intervals tilted Table 3 1 Status Reply Meanings The tilt sensor is a 45 mechanical switch that is mounted on the release circuit board assembly In the standard instrument configuration with the release mechani
14. ation that is particular to the material being presented Push Off Release Transponder 0010189 REV C vii WARRANTY STATEMENT All equipment manufactured by EdgeTech is warranted against defective components and workmanship for a period of one year after shipment Warranty repair will be done by EdgeTech free of charge Shipping costs are to be borne by the customer Malfunction due to improper use is not covered in the warranty and EdgeTech disclaims any liability for consequential damage resulting from defects in the performance of the equipment No product is warranted as being fit for a particular purpose and there is no warranty of merchantability This warranty applies only if i The items are used solely under the operating conditions and in the manner recommended in Seller s instruction manual specifications or other literature li The items have not been misused or abused in any manner nor have repairs been attempted thereon without the approval of EdgeTech Customer Service lii Written notice of the failure within the warranty period is forwarded to Seller and the directions received for properly identifying items returned under warranty are followed iv The return notice authorizes Seller to examine and disassemble returned products to the extent Seller deems necessary to ascertain the cause for failure The warranties expressed herein are exclusive There are no other warranties either expressed or
15. der to move through customs quickly and without duties being charged Whenever possible please send copies of original export shipping documents with the consignment 2 If the value of the equipment is over 1000 the following Shipper s oath must be sent with the invoice This oath can be typed on the invoice or on a separate letterhead declare that the articles herein specified are the growth produce or manufacture of the United States that they were exported from the United States from the port of _ _ on or about that they are returned without having been advanced in value or improved in condition by any process of manufacture or any other means and that no drawback or allowance has been paid or admitted hereof Signed 3 If there is more than one item per consignment a packing list must accompany the shipment It is acceptable to combine the proforma invoice and packing list as long as the contents of each carton are clearly numbered and identified on the invoice 4 Small items can be shipped prepaid directly to EdgeTech by FedEx DHL UPS Airborne etc 5 f the equipment is the property of EdgeTech formerly EG amp G Marine Instruments Division please insure for full value 6 Faxone invoice packing list and a copy of the airway bill to EdgeTech upon shipment Push Off Release Transponder 0010189 REV C CUSTOMER SERVICE Customer service personnel at EdgeTech are always eager to hear from use
16. e certain that the O rings and O ring surfaces are clean and lightly greased use only silicone grease 2 As the O ring enters the housing bore firm but gentle pressure must be applied to seat the end cap fully against the housing 3 Gently guide the release end cap and motor assembly back into the housing taking care not to damage the sealing surface of the housing or pinch any cables Be sure to align the orientation key while inserting it While holding the end cap in place insert the Kynar retaining rod back into the slot Continue inserting the rod until it comes out the other end of the slot 4 After connecting the motor cable gently guide the electronics assembly back into the housing taking care not to damage the sealing surface of the housing or pinch any cables Be sure to align the orientation key to the housing While holding the end cap in place insert the Kynar retaining rod back into the slot Continue inserting the rod until it comes out the other end of the slot 5 Install the release link Ultem plastic threaded link by threading it on to the shaft rhe shaft should have a light coating of silicone grease applied the release link should be screwed on all the way then backed off 1 8 to a turn At this point it is good practice to perform an air Push Off Release Transponder 0010189 REV C 4 3 acoustic test of the system by running through the command set for the PORT LF SD See section 3 3 6 Replace the purge
17. ese are located on the purge port and release shaft Check and replace these o rings periodically as well 6 2 General Cleaning and Inspection Whenever the unit has been recovered from a deployment the unit should be cleaned and rinsed with fresh water to avoid salt buildup and deterioration of mechanical parts A visual check of the housing and release mechanism should be performed to detect any signs of damage excessive wear corrosion etc Push Off Release Transponder 0010189 REV C 6 2 1 Inspection Particulars e Check the condition of the threaded release shaft particularly in the area of contact with the release link e Check for wear corrosion or distortion of the top pad eye lifting eye e Check for corrosion of the purge plug e Check and replace if needed all o rings e Check and replace if needed the two zinc anodes e Check the housing for signs of corrosion or damage to the hard coat 6 3 Common Spares Common spares for the PORT LF unit are listed below along with their EdgeTech part numbers QTY DESCRIPTION EDGETECH PART 1 Battery Pack AA Alkaline Battery Pack 0007569 1 Release Link 0005844 2 ORING Endcap to Housing 0005939 2 ORING Back Up Endcap to Housing 0005955 1 ORING Release Shaft 0005952 1 ORING Release Shaft Insert 0009058 2 ORING Purge Port 0005920 2 Kynar Retaining Rod 0009623 2 Nylon Screw 10 32x1 for Anti Rotation Block 0005381 2 Isolation Washer for Anti Rotation Block
18. g down from the lip notch e 4 PE Figure A 5 Bolting Release to Pop Up Bottom Cup 7 Complete assembly by sliding the 3 8 galvanized bolt through the bottom post of the pop up through the last two links of the anchoring chain and mating the Ultem release link in the center 8 This connection is secured by double nutting the bolt with a split lock washer between the two nuts Edgelech A 4 APPENDIX A POP UP A 2 Mechanical Drawings A mechanical drawing for the Pop Up is shown on the following page Push Off Release Transponder 0010189 REV C THESE DRAWINCS AND SPECIFICATIONS ARE THE PROPERTY OF EDGEONE LLC DBA EDCGETEGH OR ORE REVISIONS AND ARE SUED N ETRICT CONFIDENCE THEY SHALL MOT BE REFRCODUCELD COPIED OF USED IN AMT WATY ERE REW DE SCRIETION DATE APPROVED i i P WITHOUT THE EXFRESS WRITTEN FERMIESION OF EDGEDNE LLT 2012 EDGECAE LLE RELEASED TO PRODUCTION 10 14 AGENT LIFTING LINE CAPACITY CHART CANISTER SYNTACTIC FOAM FILLED MDPE TRANSPONDER 6061 AL HARD COAT ANODIZED LINE DIAMETER LINE LENGTH LIFTING LINE DOUBLE BRAID NYLON AMSTEEL BLUE EYCUSTOMER SUPPLIED CHAIN SHACKLE HDG STEEL 24 00 45M 150 DEPTH RATING 200M WEIGHT IN AIR 42 6 LBS WEIGHT OF LINE EFFECTIVE BUOYANCY IN WATER AFTER RELEASE 15 LBF POSITIVE OPTIONAL 5 LBF BUOY SUPPLIED 8 00 NOTES e MATERIALS 100m 1325 FT 5p 200M 450 FT 400M 11300 FT MOTE SUGGESTED
19. he purge plug with the anti rotation block and nylon screws CAUTION When purging the instrument be careful not to draw more than 5 PSIG vacuum Exceeding this figure can damage the batteries which in turn can result in instrument failure If a purging set up is not available then place a desiccant pack inside the housing to help reduce moisture V Edgelech 4 4 SECTION 4 OPERATING INSTRUCTIONS 4 2 Arming the Instrument The release mechanism is easily armed Items required for arming are one release link silicone grease and a flat blade screwdriver 1 Make certain that the release shaft is free of debris and is not damaged 2 Grease the threads on the shaft and inside the link with silicone grease 3 Thread the release link on to the shaft until it bottoms out then unscrew it turn 4 Install the anti rotation block using two nylon screws 5 If you wish to test the release then send the release command When the unit receives this command it will rotate the release shaft and push off the link 4 3 Acoustic Air Testing This section describes the acoustic air testing to ensure proper function of the unit before deployment 4 3 1 Setup The specific acoustic impedance of air is quite different from that of seawater which renders the transducer a far less efficient receiver when out of water For this reason it is necessary to place the source deck unit transducer or speaker within a meter or two of the PORT tr
20. implied beyond those set forth herein and Seller does not assume any other obligation or liability in connection with the sale or use of said products Any product or service repaired under this warranty shall be warranted for the remaining portion of the original warranty period only Equipment not manufactured by EdgeTech is supported only to the extent of the original manufacturer s warranties V Edgelech viii RETURNED MATERIAL AUTHORIZATION Prior to returning any equipment to EdgeTech a Returned Material Authorization RMA number must be obtained The RMA will help us identify your equipment when it arrives at our receiving dock and track the equipment while it is at our facility The material should be shipped to the address provided in the EdgeTech Customer Service section Please refer to the RMA number on all documents and correspondences as well All returned materials must be shipped prepaid Freight collect shipments will not be accepted EdgeTech will pay freight charges on materials going back to the customer after they have been evaluated and or repaired The following steps apply only to material being returned from outside the Continental United States Follow them carefully to prevent delays and additional costs 1 All shipments must be accompanied by three copies of your proforma invoice showing the value of the material and the reason for its return If the reason is for repair it must be clearly stated in or
21. lease Transponder Low Frequency Small Diameter PORT LF SD At EdgeTech it is our policy to provide high quality cost effective products and support services that meet or exceed your requirements We also strive to deliver them on time and to continuously look for ways to improve them We take pride in the products we manufacture and want you to be entirely satisfied with your equipment Purpose of this Manual The purpose of this manual is to provide the user with information on the setup and use of EdgeTech s PORT LF SD Although this manual encompasses the latest operational features of the PORT LF SD some features may be periodically upgraded Therefore the information in this manual is subject to change and should be used for reference only Liability EdgeTech has made every effort to document the PORT LF SD in this manual accurately and completely However EdgeTech assumes no liability for errors or for any damages that result from the use of this manual or the equipment it documents EdgeTech reserves the right to upgrade features of this equipment and to make changes to this manual without notice at any time Warnings Cautions and Notes Where applicable warnings cautions and notes are provided in this manual as follows WARNING Identifies a potential hazard that could cause injury or death CAUTION Identifies a potential hazard that could damage equipment or data NOTE Recommendations or general inform
22. ment Always ensure that the proper line voltage is used Push Off Release Transponder 0010189 REV C HARDWARE VARIATIONS AND COMPATIBILITY The Push Off Release Transponder contains both standard and proprietary hardware At times EdgeTech may change the standard components due to their availability or performance improvements Although the component manufacturers along with their models and styles may change from unit to unit replacement parts will generally be interchangeable EdgeTech will make every effort to see that replacement components are interchangeable and use the same software drivers if applicable At times however direct replacements may not exist When this happens EdgeTech will provide the necessary drivers with the replacement part if applicable EdgeTech may also change certain hardware per customer requirements Therefore portions of this manual such as parts lists and test features are subject to change These sections should be used for reference only When changes are made that affect system operation they will be explicitly noted Also some options and features may not be active in the customer s unit at time of delivery Upgrades will be made available when these features are implemented Contact EdgeTech Customer Service with any questions relating to compatibility V Edgelech vi ABOUT THIS DOCUMENT We the employees at EdgeTech would like to thank you for purchasing Push Off Re
23. port plug and the anti rotation block using the two nylon screws 7 Purge the instrument as per the following section 4 1 4 Leak Detection and Condensation Prevention EdgeTech s releases are provided with a 3 8 inch diameter purging port on the bottom release end end cap The recommended procedure for preparation of the instruments atmosphere is as follows The procedure assumes that the user has a vacuum pump dry nitrogen gas cylinder and compound pressure vacuum gauge all arranged on a manifold setup 1 Verifying that all other other than the purge port o ring seals have been cleaned lubricated and assembled 2 Prepare the purge port plug for installation by cleaning and greasing it the plug must be ready for immediate insertion 3 Insert a purge port adaptor and draw a 3 PSIG vacuum do not exceed 3 PSI 4 Close the manifold valve to the instrument and allow the instrument to sit of for 15 minutes Check the gauge afterwards and verify that the vacuum did not change This step is done to detect gross o ring problems cut or missing 5 Openthe valve to the instruments purge port and a Backfill the housing with dry nitrogen gas do not exceed 5 PSIG b Draw a 3 PSIG vacuum on the instrument do not exceed 5PSIG c In humid environments you should repeat this process up to four times d After drawing the final vacuum in this process quickly insert the purging plug before the 3 PSIG vacuum is lost 6 Secure t
24. quency It is unlikely that the deck unit will display a valid range because of the proximity of the two transducers but you should be able to verify that the instrument transmits a reply pulse by listening to the alarm on the front panel 5 Next send the DISABLE command The instrument should reply with the appropriate series of pings to indicate tilt status 6 Now range on the instrument again with the deck unit This time the unit should not transmit a reply pulse 7 Itis a good practice to finish up by sending the ENABLE command so that during deployment the instrument will reply to range interrogations If the PORT is being shipped or stored it should be disabled to conserve battery life The PORT should also be left disabled while deployed to conserve battery life If the system is left enabled and it pings 512 times it will disable itself to save battery life Simply send the ENABLE command to use it again 4 4 Post Deployment After recovery the unit should be cleaned and rinsed with fresh water to avoid salt buildup and deterioration of mechanical parts A visual check of the housing and release mechanism should be performed to detect any signs of damage excessive wear corrosion etc If the PORT LF SD is not to be used again soon the unit should be turned off follow procedure described in sub section 4 1 If the unit is to be stored for a long period of time the batteries should be removed See Maintenance proceduresin
25. r enean 2 5 2 5 Tuechanical DE EE EN CNN AdEUNUE 2 6 SECTION Rd ut dup een 3 1 FACO m NEDE 3 1 NNN 3 1 V Edgelech xii RNET NNN 3 1 NNN 3 2 SECTION 4 Operating Instructions i2 divi bd eoa via dd CERE ME iri a Pied a Pda I p Lo VER RL CLA datt d 4 1 FT TEN 4 1 LLED NNE LNE g 910 EE 4 1 ALL APPNO EE EEE 4 2 2 1 te 4 2 4 1 4 Leak Detection and Condensation Prevention rrrrrnnnnnrrnnnnnnnvnvnnnnnrvrrnnnnnnnnnneeessssssnnnnnnnsrsvnnnnnnn 4 3 12 Armine thensteulie FIE secsi ues tssaspptiSe qur cubat e pres d ups 0s PrUPEtuPRIE SE UI Cea ti PESE sees 4 4 4 3 Acoustic Alr EE mmm 4 4 rE o E 4 4 2 TEN e A A S 4 4 LAPOT NNN N 4 5 SECTION 5 BACS SERIES CODING Len 5 1 SECTION 6 MANTES M 6 1 6 1 Battery Replace MeNi EEE 6 1 6 1 1 Battery Replacement Procedure ssessseseseesssrreserrerssrreesrreressrrsssrreesrresssreroserressrereseereserereseeeesse 6 1 bl NENNE 6 2 6 1 3 Additional O RINES scicodssacesiceesdeacadesntodeontadewadanateeswagseasieoeGesinnndodecstuncdesnewadeunndveaVedaeeindeusdvastasevedanes 6 2 6 2 General Cleaning and Inspection ccccccesscccceeseccccesecccceescceceusececseecceeeeneceseesecesseneceeseeecesseneeeesees 6 2 5 2 inspection as CU EEE pH Oni dab nda NM P MM E ERES dew 6 3 63L OMMON NE 6 3 APPENDIX A POP UP PIN A 1 MANN NN A 1 HEG re Eee E ee ee A 4 P
26. rent acoustic impedance than that of seawater will cause absorption or reflection of acoustic signals which will degrade the operation of the unit Floatation including glass spheres syntactic foam and plastic floats are particularly problematic A float placed physically close to the transducer can create a blind area in the transducers beam pattern 3 2 Mechanical The release load is held through the top pad eye housing and release link There are isolation shoulder washers on the top pad eye to prevent electrical contact with the mooring In some installations such as a trawl resistant bottom mooring the unit needs to be secured to the structure It is important to verify that the release link is not obstructed in its motion which could prevent it from disengaging The release mechanism is designed for in line loads side loading will severely degrade performance Generally the release link is treated as a disposable item It is used to electrically isolate the release from the rest of the mooring The release link is fabricated from Ultem a very high strength plastic Arbitrary choice of an alternate release link could result in jamming galvanic corrosion or mooring failure due to insufficient strength 3 2 1 Bio Fouling Prevention Anti fouling paint can be used to prevent bio fouling on the housing and other external parts However note that the system is made of aluminum so do not use paints that will react with it Copper b
27. rs of our products Your feedback is welcome and is a valuable source of information which we use to continually improve these products Therefore we encourage you to contact EdgeTech Customer Service to offer any suggestions or to request technical support NOTE Please have your system Serial Number available when contacting Customer Service E mail service edgetech com Mail 4 Little Brook Road West Wareham MA 02576 Telephone 508 291 0057 Facsimile 508 291 2491 24 Hour Emergency Technical Support Line 508 942 8043 For more information please go to www EdgeTech com V Edgelech COMPANY BACKGROUND EdgeTech formerly EG amp G Marine Instruments traces its history in underwater data acquisition and processing back to 1966 EdgeTech has designed developed and manufactured products instruments and systems for the acquisition of underwater data including marine estuarine and coastal applications for over 45 years The company has responded to the needs of the scientific Naval and offshore communities by providing equipment such as sub bottom profilers side scan sonar acoustic releases USBL positioning systems and bathymetric systems that have become standards in the industry EdgeTech has also consistently anticipated and responded to future needs through an active research and development program Current efforts are focused on the application of cutting edge CHIRP and acoustic technology
28. s are required within each word and no repetitions of words are allowed in a command 2 3 3 BACS Command Coding BACS command coding is described in the following table PAIR NUMBER o 1 1 9 5 kHz 9 9 kHz 2 9 5 kHz 10 3 kHz 3 9 5 kHz 10 7 kHz 4 9 9 kHz 10 3 kHz 5 9 9 kHz 10 7 kHz 6 10 3 kHz 10 7 kHz Table 2 3 BACS Command Coding 2 3 4 Standard Command Functions Functions for the three standard commands are given in the table below COMMAND FUNCTION ENABLE Enable Transponder DISABLE Disable Transponder RELEASE Activate mechanical release Table 2 4 Standard Command Functions V EdgeTech 2 4 SECTION 2 SPECIFICATIONS 2 3 5 Transponder Specifications Specifications for the transponder are given below SPECIFICATION VALUE Sensitivity 80 dB re 1 uPa RCV Detection Jitter lt 0 1 ms Interrogate Frequency 11 kHz standard others are optional Post Filter Bandwidth 300 Hz Minimum Interrogate Pulse Width 5 ms Reply Frequency 12 kHz standard other frequencies available Reply Pulse Width 10 ms Reply Source Level 192 dB re 1uPa 0 1m Turnaround Time 12 5 ms Lockout Time 1 second Table 2 5 Transponder Specifications 2 4 Power Supply Specifications The PORT LF SD uses a pack of 24 welded AA alkaline batteries as a power supply Figure 2 2 Specifications for this battery pack are shown in the following table SPECIFICATION VALUE Main Supply 5V regulated Quiescent Current Drain 2
29. sm down the unit is defined as not tilted For applications requiring a narrower maximum allowable angle of tilt optional tilt switches are available The switch can also be installed at different angles to change the standard orientation Push Off Release Transponder 0010189 REV C OPERATING INSTRUCTIONS This section of the manual covers instructions for normal operations including turning on the instrument opening and closing the housing air acoustic tests and post deployment considerations 4 1 Turning on the Unit The Push Off Release Transponder PORT LF SD is carefully tested and shipped from the factory with a new battery pack installed battery packs are disconnected unless otherwise requested To use the PORT LF SD all that is required is opening the housing plugging in the battery which is JP3 on the electronics board and then closing and purging the housing 4 1 1 Opening the Housing To open the housing 1 Remove the anti rotation block from the release end of the instrument Black Delrin block that keeps the release link from turning by unscrewing the two nylon screws that hold it in place 2 Pull the purge port plug out of the end cap under the anti rotation block 3 Remove the Kynar retaining rod white plastic rod from the transducer end of the housing Simply pull the rod out and away from the housing 4 Gently pull the transducer end cap free from the housing You may need to work it side
30. sseeceseeeeceseuseeesseness 2 5 Table 3 1 Status Reply Meanings rrnrrannrnnnnnnrrnnnnnrrnnnnnernnnnnerrnnnnnnnnnnnnennnnnnnsvnnnnnsnnnnnnesnnnnnesnnnnnnenennnnesennnene 3 2 TRONE 6 3 Push Off Release Transponder 0010189 REV C OVERVIEW This manual describes the EdgeTech low frequency small diameter Push Off Acoustic Release Transponder PORT LF SD This model is a lightweight robust and easily deployable instrument It can function both as an acoustic release and or transponder at depths up to 3500 meters and with release loads up to 250 Kg The PORT LF SD has been designed for use as an instrument location and recovery system on oceanographic moorings and platforms Additionally the precision high output power transponder feature makes this instrument ideal for use in long baseline LBL positioning and navigation systems The PORT uses a version of the EdgeTech s field proven Binary Acoustic Command System BACS code structure The BACS coding structure provides 12 000 possible secure command codes Each release is factory programmed with its own unique command set including ENABLE DISABLE and a RELEASE command Whenever the instrument receives a Disable or Enable command it responds with a status reply message that indicates the orientation of the instrument tilted or not tilted The transponder function can be turned on or off with the ENABLE and DISABLE commands The transponder will self disable after 512 pings
31. to side to get it started but once the initial resistance is overcome the transducer should slide out easily CAUTION Separate the transducer end from the housing by gently pulling them apart Be careful not to scratch the housing throat when pulling the assembly from the tube The main electronics and battery pack assembly is connected to the transducer end cap Carefully slide the assembly out enough to plug the connector from the battery pack into the electronics board if you are turning the system on V Edgelech 4 2 SECTION 4 OPERATING INSTRUCTIONS 5 If you are servicing o rings or you simply wish to inspect the release end then slide the transducer and electronics assembly out enough to disconnect the cable from JP2 which goes to the motor 6 To remove the release end cap pull the Kynar rod from the release end of the housing and then gently pull the end cap off 4 1 2 Applying Power The electronics assembly and battery pack are mounted to an aluminum plate that is attached to the transducer end cap 1 If the transducer cable JP1 has been disconnected from the electronics assembly plug it back into its header on the circuit board 2 The battery pack has a lead wire with a connector on it simply plug this connector into the header JP3 on the circuit board The PORT will ping once after it has powered up and the transponder will be enabled 4 1 3 Closing the Housing To close the housing 1 Mak
32. ush Off Release Transponder 0010189 REV C xiii LIST OF FIGURES Figure 2 1 Figure 2 2 Figure 2 3 Figure 6 1 Figure A 1 Figure A 2 Figure A 3 Figure A 4 Figure A 5 Figure A 6 PLB OAS CONS ceirnin EES 2 2 PPT 2 5 PORTSEP DNA NNN 2 6 PORTLF S0 Basie jr 6 4 POP UD ODON EE NE A 1 stalling the Top Mating Collar 444 A 2 Inserting Release into the Top Cup from Above rrrrannrnnnnnnrrnnnnnernnnnnernnrnnnrrnnnnnernnnnnevnnnnnssensnene A 2 l se Ua SINS RINE esetatscentietitmp Dedi vedettes is entis EE A 3 Bolting Release to Pop Up Bottom Cup rrrrnnnnnrrrnrnnnrrnnnnnernnnnnerrnnnnnernnnnnernnnnnesnnnnnssvnnnnnesensnnee A 3 PORT TF SD 200M Pop up Durst A 5 V Edgelech LIST OF TABLES Table 2 1 Mechanical Spe cifications cccccccsssccccsseccceseccccesececceesececeuececeeuscceseuecessunecessunsceeseuecetsgness 2 1 Table 2 2 Command Receiver SPECIFICATIONS ssscccceeseccccesececceusececeusececceuecceceusecessenececeeeeceeseeecetseness 2 2 TAR 2 3 BACS NONNE 2 3 Table 2 4 Standard Command FunctionsS aarnnnnvnvvrvnnnnnnnnnnenrnensssnnnnnnnnnvnnnnnnnnnnnnnensnsnsssnnnnnnnssvnnnnnnnnnnnnnesen 2 3 Table 2 5 Transponder Specifications ccccccessccccssseccccsececcesececceuscccceeececeeuscceseunecessuaecessueeceessusesetseness 2 4 Table 2 6 Power Supply Specifications avvises 2 4 Table 2 7 Environmental SpecificatioNS TeMperature cccccccsssccccessececceseccceesece
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