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- Page 1 PORT LF (Low Frequency) U S E R H A R D W A R E M A N U A L 0008595_REV_E September 2017 EdgeTech 4 Little Brook Road West Wareham, MA 02576 Tel: (508) 291-0057 Fax: (508) 291-2491...
- Page 2 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.
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Page 3: Attention - Read This First
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. -
Page 4: Hardware Variations And Compatibility
HARDWARE VARIATIONS AND COMPATIBILITY The PORT LF 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. -
Page 5: About This Document
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. Although this manual encompasses the latest operational features of the PORT-LF, some features may be periodically upgraded. -
Page 6: Revision History
Revision History REVISION DESCRIPTION DATE APPROVAL Release to Production Updates Updates Updated Images and Content 09/2016 Updated Images and Content 09/21/2017 PORT LF 0008595_REV_E... -
Page 7: 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. -
Page 8: Returned Material Authorization
4. Small items can be shipped prepaid directly to EdgeTech by FedEx, DHL, UPS, Airborne, etc. 5. If the equipment is the property of EdgeTech (formerly EG&G Marine Instruments Division), please insure for full value. - Page 9 6. Fax one invoice, packing list, and a copy of the airway bill to EdgeTech upon shipment.
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Page 10: Customer Service
CUSTOMER SERVICE Customer service personnel at EdgeTech are always eager to hear from users 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... -
Page 11: Company Background
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... -
Page 12: Table Of Contents
2.3.2 BACS Command Structure ......................2-3 2.3.3 BACS Command Coding ......................2-3 2.3.4 Standard Command Functions ....................2-3 2.3.5 Transponder Specifications ....................... 2-3 2.4 Power Supply Specifications ......................2-4 2.5 Environmental Specifications ......................2-4 2.6 Mechanical Drawings ........................2-4 PORT LF 0008595_REV_E... - Page 13 xiii SECTION 3: Installation ......................3-1 3.1 Acoustic ............................3-1 3.2 Mechanical ............................3-1 3.2.1 Bio-Fouling Prevention ......................3-1 3.3 Status Reply ............................3-2 SECTION 4: Operating Instructions .....................4-1 4.1 Turning the Unit On ......................... 4-1 4.1.1 Removing the Purge Port Plug ....................4-1 4.1.2 Removing the Release End ......................
- Page 14 Top Pad Eye: ............................A-1 Purging: ..............................A-1 Pre-Deployment Check: ........................A-1 Deployment:............................A-1 REMOTE RELEASE ....................B-1 Mechanical Drawing ..........................B-1 LF TANDEM KIT OPTION..................C-1 Mechanical Drawing ..........................C-1 STRONGBACK OPTION ..................D-1 Mechanical Drawing ..........................D-1 PORT LF 0008595_REV_E...
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Page 15: List Of Figures
LIST OF FIGURES Figure 2-1: PCB Connectors ........................2-2 Figure 2-2: PORT-LF Mechanical (Standard) - 0010815 ................2-5 Figure 2-3: PORT-LF DEEP Mechanical- 0019564 ..................2-6 Figure 4-1: Unscrew the Anti-Rotation Block to Remove it ............... 4-1 Figure 4-2: Pulling the Purge Port Plug ...................... 4-2 Figure 4-3: The Kynar Retention Rod ...................... - Page 16 Figure 6-23: Cross Section of Round and Back-up O-rings ..............6-15 Figure 6-24: PORT LF Callout Assembly Drawing Page 1 of 2 0008118 ........... 6-17 Figure 6-25: PORT LF Callout Assembly Drawing Page 2 of 2 - 0008118 ..........6-18 Appendix Figure B-1: Remote Release - 0012120 ..................B-2 Appendix Figure B-2: PORT LF Optional Remote Release - 0012266 ............
- Page 17 Table 2-8: Environmental Specifications—Temperature ................2-4 Table 3-1: Status Reply Meanings ......................3-2 Table 6-1: General Inspection and Replacement Schedule ..............6-16 Table 6-2: Common Spares Refer to 0008118 ..................6-16 Appendix Table C-1: PORT LF Tandem Kit Parts - Refer to 0008237 ............C-1...
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Page 19: Section 1: Overview
Long Baseline (LBL) Positioning and Navigation Systems. The PORT-LF uses a version of the EdgeTech’s field-proven, Binary Acoustic Command System (BACS) code structure. This makes the POR-TLF compatible with the 8011, 8011A, 8011M, AMD200R, and PACS deck Units available from EdgeTech. -
Page 21: Section 2: Specifications
SECTION 2: SPECIFICATIONS This section describes the specifications for the PORT-LF. 2.1 Mechanical Specifications Mechanical specifications for the PORT-LF are as follows: SPECIFICATION VALUE Depth Rating 3,500 m (11,480 ft) Maximum Release Threshold 350 kg (770 lb) Maximum Static Load 750 kg (1,650 lb) Overall Length 66 cm (26 in) -
Page 22: Printed Circuit Board (Pcb)
(2,000 Hz / 300 Hz Bandwidths) Pulse Width 22 ms Pulse Period 250 ms 9 seconds Total Command Time Total Lock Out Time 14 s re beginning Commands Per Tone Pair 2,000 Table 2-3: Command Receiver Specifications PORT LF 0008595_REV_E... -
Page 23: Bacs Command Structure
2.3.2 BACS Command Structure The BACS’ command structure consists of two 8-bit words separated by 5-sec intervals. Each bit encoded 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. -
Page 24: Power Supply Specifications
-10° C to + 40° C (14° F to 104° F) Operating --20° C to + 60° C (-4° F to 140° C) Storage (Batteries Removed) Table 2-8: Environmental Specifications—Temperature 2.6 Mechanical Drawings Mechanical drawings for the PORT-LF and PORT-LF Deep are shown on the following pages: PORT LF 0008595_REV_E... -
Page 25: Figure 2-2: Port-Lf Mechanical (Standard) - 0010815
Figure 2-2: PORT-LF Mechanical (Standard) - 0010815... -
Page 26: Figure 2-3: Port-Lf Deep Mechanical- 0019564
SECTION 2: SPECIFICATIONS Figure 2-3: PORT-LF DEEP Mechanical- 0019564... -
Page 27: Section 3: Installation
SECTION 3: INSTALLATION This section contains the information relative to the basic set up of EdgeTech’s Push Off Release Transponder (PORT-LF) including important details concerning the orientation of the Unit on a mooring structure. NOTE: The transponder will operate in any orientation. However, specifics of the intended deployment will mandate special installation concerns. -
Page 28: Status Reply
INSTALLATION Furthermore, when instruments are deployed for long periods, the use of grease is considered important. Apply grease to the threaded release shaft. EdgeTech recommends the use of Novagard G624, be sure to use only silicone grease. 3.3 Status Reply The PORT-LF is equipped with sensors that monitor the tilted or not tilted orientation of the system and release shaft rotation. -
Page 29: Section 4: Operating Instructions
To use the PORT LF, the Housing MUST be opened so that the battery can be plugged into the JP3 header connector on the electronic board. Then, the unit must be closed and the Housing purged. -
Page 30: Figure 4-2: Pulling The Purge Port Plug
2. Once the Anti-Rotation Block has been removed, the Purge Port Plug will be visible. Pull the Purge Port Plug out of the end cap as shown in and 4-2. IGURE Purge Port Plug Figure 4-2: Pulling the Purge Port Plug PORT LF 0008595_REV_E... -
Page 31: Removing The Release End
4.1.2 Removing the Release End CAUTION! Separate the Release End from the Housing by gently pulling them apart. Be careful not to scratch the Housing when pulling the assembly from the tube. The main electronics and battery pack assembly is connected to the Release End Cap. -
Page 32: Figure 4-4: Pulling The Kynar Rod From The Housing
4-5. You may need to IGURE work it side-to-side to get it started, but once the initial resistance is overcome, the Release End should slide out easily. Figure 4-5: The Release End Cap being Pulled Free from the Housing PORT LF 0008595_REV_E... -
Page 33: Applying Power
4.1.3 Applying Power The Electronics Assembly and Battery Pack are mounted to an aluminum plate, which is attached to the Release End Cap. 1. Plug the 3-pin battery connector into the header JP3 on the circuit board. When doing so, ensure to line the pins up correctly as shown in 4-7. -
Page 34: Closing The Release End
Housing. Whenever servicing the unit, be sure to check the orientation of cables to ensure they won’t be damaged. Transducer Cable comes through the Electronic Chassis Support Bracket Figure 4-8: The Proper Alignment of the Motor Cable in the Electronics Chassis Support Bracket PORT LF 0008595_REV_E... -
Page 35: Figure 4-9: Consider The Grounding Spring When Inserting The Release End Cap
To close the Release End: 1. The Release End Cap with the Grounding Spring, as shown in 4-9. IGURE Grounding Spring Figure 4-9: Consider the Grounding Spring When inserting the Release End Cap 2. Gently guide the Electronics assembly back into the Housing, taking care not to damage the sealing surface of the Housing or pinch any cables as shown in 4-10 4-11. -
Page 36: Figure 4-11: Lightly Press The Grounding Spring To Guide It Into The Housing
IGURE Bare Aluminum Band Figure 4-12: The Bare Aluminum Band a. Be sure to align the Orientation key to the Housing as shown in 4-15. IGURE Figure 4-13: The Proper Alignment of the Release End Orientation Key PORT LF 0008595_REV_E... -
Page 37: Figure 4-14: Ensure Unit Is Firmly Closed
b. As the O-ring enters the Housing, firm but gentle pressure must be applied to seat the end cap fully against the Housing as shown in 4-14. IGURE Figure 4-14: Ensure Unit is Firmly Closed... -
Page 38: Figure 4-15: Replacing The Kynar Retention Rod
5. While holding the Release 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 as shown in 4-15 IGURE 4-16. IGURE Figure 4-15: Replacing the Kynar Retention Rod Figure 4-16: The Fully Inserted Kynar Retention Rod PORT LF 0008595_REV_E... -
Page 39: Replacing The Purge Port Plug
4-11 4.1.5 Replacing the Purge Port Plug 1. Purge the instrument as per the following sub-section 4.1.6. 2. Replace the Purge Port Plug as shown in 4-17. IGURE Inserted Purge Port Figure 4-17: Replace the Purge Port Plug 3. Replace the Anti-Rotation Block using the two nylon screws as shown in 4-18. -
Page 40: Leak Detection And Condensation Prevention
4-12 4.1.6 Leak Detection and Condensation Prevention EdgeTech’s releases are provided with a 5/16-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. -
Page 41: Arming The Instrument
4-13 4.2 Arming the Instrument The Release mechanism is easily armed. The shaft should be wiped clean and lubricated with silicone grease before installing the link. Items required for arming: • One (1) Release Link • Silicone grease • Phillips screw driver (#1 Phillips preferred) To Arm the Instrument: 1. -
Page 42: Figure 4-20: A Clean Release Shaft
3. Grease the threads on the shaft and inside the link with silicone grease. 4. Thread the Release Link on to the Shaft until it bottoms out, then unscrew it ¼ turn as shown in 4-21. IGURE Figure 4-21: Thread the Release Link onto the Shaft PORT LF 0008595_REV_E... -
Page 43: Figure 4-22: Replace The Anti-Rotation Block Using The Two Nylon Screws
4-15 5. Replace the anti-rotation block using two nylon screws as shown in 4-22. IGURE Figure 4-22: Replace the Anti-Rotation Block using the Two Nylon Screws... -
Page 44: Acoustic Air Testing
If the Unit has just been turned on it will be enabled. b. Unless otherwise specified, the PORT-LF will be shipped from EdgeTech, with the interrogate frequency tuned to 11 kHz and the reply frequency set to 12 kHz. -
Page 45: Post Deployment
4-17 6. Now range on the instrument again with the Deck Unit. This time the Unit should not transmit a reply pulse. 7. It is a good practice to finish up by sending the ENABLE command, so that during deployment the instrument will reply to range interrogations. -
Page 47: Section 5: Bacs Series Coding
SECTION 5: BACS SERIES CODING BACS’ codes are 16-bits long with 11-bits of information. Each code is specifically referred to as 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. -
Page 49: Section 6: Maintenance
SECTION 6: MAINTENANCE The PORT-LF requires minimal maintenance, including pre-deployment preparations and checks, and post-deployment cleaning. The important tasks include battery replacement, O-ring care and maintenance, and general cleaning, inspection, and lubrication of operational elements. 6.1 To Open the PORT-LF Should the need arise for service or replacement of parts, the following instructions detail complete disassembly and reassembly of the Unit. -
Page 50: Port-Lf Disassembly
IGURE Figure 6-2: The Transducer Cable Connected to the JP1 Header Connector 4. Remove the Transducer End Cap, pull the Kynar Retention Rods, as shown in 6-3. IGURE Figure 6-3: Remove the Kynar Rod from the Slot PORT LF 0008595_REV_E... -
Page 51: Figure 6-4: Gently Pull The Transducer End From The Housing
5. Gently pull the Transducer End Cap free from the Housing. You may need to work it side-to-side to get it started, but once the initial resistance is overcome, the Release should slide out easily, as shown in 6-4. IGURE Figure 6-4: Gently Pull the Transducer End from the Housing 6. -
Page 52: Port-Lf Assembly
IGURE of the housing, where the Release End must be inserted. The Bare Aluminum Ring Figure 6-5: The Bare Aluminum Ring Within the Housing PORT LF 0008595_REV_E... -
Page 53: Figure 6-6: Feed The Transducer Cable From Transducer Side Of The Housing To The Release Side
2. Feed the Transducer Cable through the part of the Housing without the Aluminum Band as shown 6-7, ensuring it comes out the opposite end. IGURE Figure 6-6: Feed the Transducer Cable from Transducer Side of the Housing to the Release Side 3. -
Page 54: Figure 6-8: The Proper Alignment Of The Transducer Orientation Key
As the O-ring enters the Housing, firm but gentle pressure must be applied to seat the end cap fully against the Housing as shown in 6-9. IGURE Figure 6-9: Firm, Gentle Pressure will secure the End Cap to the Housing PORT LF 0008595_REV_E... -
Page 55: Figure 6-10: Insert The Kynar Rod Into The Slot
4. While holding the Transducer End Cap in place, insert the Kynar retaining rod back into the slot as shown in 6-10. Continue inserting rod until it comes out the other end of the slot as IGURE shown in 6-11. IGURE Figure 6-10: Insert the Kynar Rod into the Slot Figure 6-11: The Proper Orientation of the Kynar Retention Rod... -
Page 56: Figure 6-12: The Transducer Cable Connected To The Jp1 Header Connector
Figure 6-12: The Transducer Cable Connected to the JP1 Header Connector 6. Close the Release End, referring to sub-section 4.1.4. 7. Purge the instrument as per sub-section 4.1.6. 8. Replace the Purge Port Plug and Anti-rotation block using the two nylon screws, referring to sub- section 4.1.5. PORT LF 0008595_REV_E... -
Page 57: Battery Replacement
6.2 Battery Replacement The PORT-LF uses a welded Battery Pack made up of standard “AA” alkaline batteries. 6.2.1 Battery Replacement Procedure WARNING! IF THE UNDERWATER UNIT HAS BEEN DEPLOYED, THERE IS THE POSSIBILITY OF INTERNAL PRESSURIZATION, EXERCISE EXTREME CAUTION WHEN OPENING THE INSTRUMENT! CAUTION! The PORT-LF’s battery pack is on the underside of the Electronics’... -
Page 58: Figure 6-13: Unplug The Transducer Cable From The Jp1 Header Connector
Battery Pack Retainer Brackets (2) Figure 6-14: The Battery Pack is on the underside of the Electronics Chassis Battery Pack Retainer Brackets Screws (4) Figure 6-15: The Retainer Brackets holding the Battery to the Electronics Chassis PORT LF 0008595_REV_E... -
Page 59: Figure 6-16: The Proper Wire Orientation For The Port-Lf Battery Pack
6-11 5. Note the orientation of the wires as shown in 6-16. These wires MUST be inserted as seen IGURE to avoid being pinched by the retainer brackets, which may result in Unit failure. Figure 6-16: The proper wire orientation for the PORT-LF battery pack 6. -
Page 60: Figure 6-18: Install The New Battery Pack
8. Be sure to include the small pattern flat and lock washers on the screws as shown in 6-19. IGURE Screw Lock Washer Pattern Flat Washer Figure 6-19: The Hardware for one Bracket 9. Assemble the instrument, refer to sub-section 4.1.4. PORT LF 0008595_REV_E... -
Page 61: O-Ring Considerations
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 (EdgeTech recommends Parker’s Super O-lube, be sure to use only silicone grease) to the Housing and O-ring to facilitate insertion of the end cap. Make sure the lubricant is compatible with Nitrile rubber. -
Page 62: Figure 6-21: The Release End Cap O-Rings
5. Clean, Inspect, and lightly Grease the O-rings as shown in 6-21 6-22. EdgeTech IGURE IGURE recommends the use of Parker’s Super O-lube silicone compound grease. Figure 6-21: The Release End Cap O-rings Figure 6-22: The Transducer End Cap O-rings PORT LF 0008595_REV_E... -
Page 63: General Cleaning And Inspection
6-15 6.3 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. -
Page 64: General Inspection And Replacement Schedule
Block Deployment needed Table 6-1: General Inspection and Replacement Schedule 6.4 Common Spares Common spares for the PORT-LF Unit are listed below along with their EdgeTech part numbers: DESCRIPTION EDGETECH MTL NUMBER Screw, 10-32 x 1”, PH, Nylon MTL 34... -
Page 65: Figure 6-24: Port Lf Callout Assembly Drawing Page 1 Of 2 0008118
6-17 Figure 6-24: PORT LF Callout Assembly Drawing Page 1 of 2 0008118... -
Page 66: Figure 6-25: Port Lf Callout Assembly Drawing Page 2 Of 2 - 0008118
MAINTENANCE 6-18 Figure 6-25: PORT LF Callout Assembly Drawing Page 2 of 2 - 0008118... -
Page 67: Expert Tips
EXPERT TIPS Kynar Retention Rods: EdgeTech recommends that prior to deployment the Kynar Retention Rods’ glands be protected from sediment accumulation. Field trials show that under certain environmental conditions these glands can become tightly packed with fine sediment. Buildup of this sediment can make Kynar Retention Rod removal difficult. -
Page 68: Remote Release
REMOTE RELEASE The Remote Release is a means of physically separating the Release and Transceiver ends of the PORT for use in certain operations. Mechanical Drawing Mechanical Drawings of the Remote Release are shown below. -
Page 70: Appendix Figure B-1: Remote Release - 0012120
REMOTE RELEASE Appendix Figure B-1: Remote Release - 0012120... -
Page 71: Appendix Figure B-2: Port Lf Optional Remote Release - 0012266
Appendix Figure B-2: PORT LF Optional Remote Release - 0012266... -
Page 72: Appendix Figure B-3: Port Lf Optional Remote Release Callout - 0007639
Appendix Figure B-3: PORT LF Optional Remote Release Callout - 0007639... -
Page 73: Lf Tandem Kit Option
MTL 13 Anode (small) MTL 14 Bolt, Shoulder 5/16-18 x 0.375 x1.50”, 316SS MTL 15 Appendix Table C-1: PORT LF Tandem Kit Parts - Refer to 0008237 Mechanical Drawing Mechanical Drawings of the Tandem Kit are shown on the following pages:... -
Page 74: Appendix Figure C-1: Optional Tandem Kit Diagram - 0017625
Appendix Figure C-1: Optional Tandem Kit Diagram - 0017625... -
Page 75: Appendix Figure C-2: Port Lf Optional Tandem Kit Callout Diagram - 0008237
Appendix Figure C-2: PORT LF Optional Tandem Kit Callout Diagram - 0008237... - Page 77 The strong back portion of the unit increases lift load rating to support heavy mooring deployments. The Strong Back option for the PORT acoustic release increases the release rating of a PORT LF-SD to 2,500 pounds (1,136 kg) and the lifting load to 3,500 pounds (1,590 kg). Mechanical Drawing...
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Page 78: Appendix Figure D-1: Port Lf Optional Strongback Diagram - 0017674
Appendix Figure D-1: PORT LF Optional Strongback Diagram - 0017674... -
Page 79: Appendix Figure D-2: Port Lf Optional Strongback Kit Callout Diagram - 0008166
Appendix Figure D-2: PORT LF Optional Strongback Kit Callout Diagram - 0008166...
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