INSTRUCTIONS FOR THE INSTALLATION, OPERATION … 865A... · instructions for the installation, operation and maintenance of the benthos model 865 -a deep sea acoustic release transponder

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INSTRUCTIONS FOR THE INSTALLATION,

OPERATION AND MAINTENANCE OF THE

BENTHOS MODEL 865-A DEEP SEA

ACOUSTIC RELEASE TRANSPONDER

M-855-009 Rev. B

INSTRUCTIONS FOR THE INSTALLATION,

OPERATION AND MAINTENANCE OF THE

BENTHOS MODEL 865-A DEEP SEA

ACOUSTIC RELEASE TRANSPONDER

M-855-009 Rev. B

March 28,2001

(For Units With Microprocessor Based Board Set A-855-179)

Benthos, Inc.

49 Edgerton Drive, North Falmouth, Massachusetts 02556 U.S.A. Telephone: 1-508-563-1000 / 1-800-446-1222

Fax: 1-508-563-6444 www.benthos.com

Model 865-A Deep Sea Acoustic Release/Transponder M-855-009

Benthos, Inc. i

TABLE OF CONTENTS

Section Title Page

1.0 INTRODUCTION ................................................................................................1 2.0 GENERAL DESCRIPTION ................................................................................4 2.1 Construction............................................................................................................4 3.0 SPECIFICATIONS...............................................................................................8 3.1 Electrical..................................................................................................................8 3.1.1 Power Source..........................................................................................................8 3.1.1.1 Standard Battery Pack.............................................................................................8 3.1.2 Operating Life..........................................................................................................8 3.1.2.1 Standard Battery Pack.............................................................................................8 3.1.3 Acoustic Output.......................................................................................................8 3.1.4 Receive Frequency...................................................................................................8 3.1.5 Transmit Frequency..................................................................................................8 3.1.6 Transmit Pulse Width...............................................................................................8 3.1.7 Command Channels .................................................................................................8 3.1.8 Release Indication....................................................................................................9 3.1.9 Slant Range..............................................................................................................9 3.1.10 Enable Time.............................................................................................................9 3.1.11 Minimum Detectable Signal......................................................................................9 3.1.13 Turnaround Delay....................................................................................................9 3.1.14 Detection Jitter (or Repeatability)..............................................................................9 3.1.15 Receive Lockout Time .............................................................................................9 3.1.16 Tilt Switch..............................................................................................................10 3.1.17 Backup Timer........................................................................................................10 3.2 Mechanical ............................................................................................................10 3.2.1 Load Capacity.......................................................................................................10 3.2.2 Depth Rating..........................................................................................................10 3.2.3 Dimensions ............................................................................................................10 3.2.4 Weight...................................................................................................................10 3.2.5 Accessories ...........................................................................................................10 4.0 OPERATIONAL USE ........................................................................................11 4.1 The Switch.............................................................................................................11 4.2 Testing...................................................................................................................11 4.2.1 Power On..............................................................................................................11 4.2.2 Single Transpond ...................................................................................................11 4.2.3 Command Enable...................................................................................................13 4.2.4 Command Release.................................................................................................14 4.3 Deployment ...........................................................................................................15


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4.4 Recovery...............................................................................................................15 5.0 HARDWARE DESCRIPTION..........................................................................16 5.1 Mechanical Parts....................................................................................................16 5.1.1 Housing .................................................................................................................16 5.1.2 End Cap Assembly ................................................................................................16 5.2 Electrical Parts .......................................................................................................18 5.2.1 Battery Packs ........................................................................................................18 5.2.2 Electronics Chassis Assembly.................................................................................18 5.2.2.1 865-A Board No. 1...............................................................................................18 5.2.2.2 865-A Board No. 2...............................................................................................21 6.0 THEORY OF OPERATION ..............................................................................21 6.1 Receiver ................................................................................................................21 6.2 Command Theory..................................................................................................22 6.2.1 Command Release.................................................................................................22 6.3 Transmitter.............................................................................................................22 6.3.2 Backup Timer Feature............................................................................................23 6.4 Tilt Theory.............................................................................................................24 7.0 CHANGING THE RELEASE SETUP ..............................................................24 7.1 Changing The Command Assignments ....................................................................25 7.2 Changing The Transmit Frequency..........................................................................25 7.3 Changing The Enable Time .....................................................................................26 7.4 Changing the Backup Timer....................................................................................26 7.5 Enabling And Disabling The Tilt Function (on initial power up).................................26 8.0 MAINTENANCE ...............................................................................................27 8.1 Step-by-Step Turnaround Procedure for the 865-A................................................27 8.2 865-A Turnaround Checklist..................................................................................32 8.3 Preventative ...........................................................................................................33 8.4 Replacing the Sealing Rings ....................................................................................33 8.4.1 End Cap to Housing Seals......................................................................................33 8.4.2 End Cap Rotary Switch Shaft Seals........................................................................33 8.4.3 Release Pin Seals ...................................................................................................34 8.5 Battery Pack Replacement .....................................................................................35 9.0 TROUBLESHOOTING .....................................................................................35 10.0 DRAWINGS AND SPARE PARTS LISTS ......................................................37

APPENDICES

Application Note 210-003, Alkaline Batteries


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Application Note 500-001, Minimum Detectable Signal of Underwater Transponders

Application Note 865-001, 865-A Acoustic Release, Definition of Load Ratings


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LIST OF FIGURES

Figure 1-1 Outline Drawing ......................................................................................................2

Figure 1-2 Typical Acoustic Release Application.....................................................................3

Figure 2-1 Exploded View of 865-A Release ............................................................................5

Figure 2-2 DS-7000 Acoustic Deck Set ....................................................................................6

Figure 4-1 Actuation and Test Switch, shown in the HOLD-EXTEND position....................11

Figure 4-2 Transducer Configuration for Command Test in Air............................................13

Figure 5-1 Release Switching System.....................................................................................17

Figure 5-2 Board No. 1 Top View..........................................................................................18

Figure 5-3 Board No. 2 Top View..........................................................................................18

Figure 7-1 Setup Opening Screen...........................................................................................23

Figure 8-1 Removal of Chassis ...............................................................................................25

Figure 8-2 Connector Installation...........................................................................................26

Figure 8-3 Battery Pack Connector P.C. Board .....................................................................26


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1.0 INTRODUCTION This manual describes the use and operation of the standard Model 865-A Deep Sea Acoustic Release/Transponder, that have the microprocessor based board set, A-855-170. The unit, shown in figure 1.1 Outline Drawing, is designed for long range, heavy duty, deep or shallow water applications. It can support a load of 10,000 pounds (4540 Kg) and is tested to a simulated depth of 12,000 meters prior to leaving the factory. It is primarily intended to be used as the release link for the recovery and relocation of moored instrument arrays (see Figure 1-2). For ease of location and measurement of slant range, the unit will transpond when interrogated at a predetermined frequency. Upon recovery, the release can be easily and externally recocked for repetitive deployment. The standard battery pack will easily provide 2 years use, with many releases and a minimum of 250,000 transponds. Interrogations and commands are transmitted by the Model DS-7000 Deck Unit, which also provides a four-digit readout of slant range up to 10,000 meters. The deck unit provides seventeen different interrogate frequencies and eight different command codes per receiver frequency, so that location and ranging can be carried out on many deployed Release/Transponders without interaction. The Model DS-7000 Deck Unit has its own manual and is not described in detail here. Upon completion of a RELEASE command, the 865-A will change its transponder reply from one to five pings for every interrogate pulse from the deck unit. At the deck unit the verification that the RELEASE command has been received and acted upon is seen as a series of flashes from the receiver LED when the proper receive frequency is selected. The 865-A reverts to a single ping when the unit is recocked. In order to ensure the maximum battery life of the 865-A, there is an integral transpond enable/disable feature. After a predetermined time, the transpond capability is automatically disabled. This prevents unintended pings, which would waste energy. By sending an ENABLE command the timer is reset and the release will again reply when interrogated.


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Figure 1-1


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MOORING

RELEASE

DEEP SEABENTHOS

ARRAYINSTRUMENT

PACKAGEBUOYANCY

Typical Acoustic Release Application

Figure 1-2


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2.0 GENERAL DESCRIPTION The Model 865-A Acoustic Release is supplied to the customer as follows. The customer should check the shipment upon receipt to be sure the order is received complete and undamaged. Please contact Benthos before returning any equipment damaged in shipment. a. Model 865-A Acoustic Release/Transponder unit b. Model 865-SL (Spare Link) c. Spare Parts Kit 865-A-SPK (see Section 9) d. Instruction Manual.

2.1 Construction (see Figure 2–1) The Model 865-A consists of a transducer, electronics assembly, power pack and release assembly, contained in a stainless steel housing. The electronics, battery and release assembly can be withdrawn as one assembly by simply removing the two stainless steel nuts and pulling on the end cap. The internal connection to the transducer at the other end is automatically broken when the assembly is withdrawn, and remade when the assembly is inserted. When withdrawn, it can be seen that the release mechanism takes up about one third of the assembly, the electronics and battery, the remainder. The electronics/battery section can be separated from the release mechanism by removal of two No. 10-32 stainless steel nuts found on the opposite side of the release mechanism mounting plate. The electronics are protected by the short aluminum tube nearest the transducer connector. The circuit boards may be exposed by simply removing two 1/4-20 flathead screws on the end plate, removing the plate and sliding off the tube (see Figure 2-1). There are two circuit boards back to back, separated by four spacers and a connector. They are:

a. 865 Board No. 1, Driver Board, C-855-130 (with largest components) b. 865 Board No. 2, Logic Board, C-855-132.

The stainless steel housing consists of the tubing, a mooring eye, protective rails for the transducer, two padeyes for attachment of other equipment and an end cap for the release mechanism. A 1018 carbon steel sacrificial anode is mounted to the housing for corrosion protection (reference Drawing B-855-81, Instructions for Anode Installation). Most of the external surface of the housing is painted to reduce the exposed surface area. NOTE: Minor scrapes or chips in the paint are not a problem as long as the anodes are properly installed.


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NOTE: Older units with unpainted housings still require sacrificial anodes on each handle for sufficient protection. Request 865-A Anode Kit 865-SA-K2 for units with unpainted housings.


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BATTERY

CONNECTOR

COVER PLATEASSEMBLY TUBE

CONNECTOR(FEMALE)

CHASSIS BATTERYPACK

(MALE)

CHASSIS

END CAP

BENTHOS

BATTERY PACK

HOUSING

NO. 2 PLATETUBE

CONNECTOR(FEMALE)

TRANSDUCERNO. 1P.C. BOARD

TRANSDUCER CONNECTOR (MALE)

DELRIN BUSHING

ELECTRONICSP.C. BOARD

TRANSDUCER

END

ANODE

Exploded View of 865-A Release

Figure 2-1


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DS-7000 Acoustic Deck Set

Figure 2-2


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3.0 SPECIFICATIONS 3.1 Electrical 3.1.1 Power Source 3.1.1.1 Standard Battery Pack 18 alkaline 'D' cells to provide two strings at a nominal 13.5 volts (Benthos P/N 865-SB-13). Capacity: 22 Amp-hours (de-rated for cold temperature use and two year deployment time)

3.1.2 Operating Life 3.1.2.1 Standard Battery Pack Release after 2 years and 250,000 transponds.

3.1.3 Acoustic Output Greater than 192 dB re 1 micropascal at 1 meter from 9.0 to 16.0 kHz. Greater than 185 dB from 7.5 to 8.5 kHz.

3.1.4 Receive Frequency The receiver frequency is factory set to any one frequency between 7.0 kHz and 15.0 kHz in 500 Hz increments (12.5 Khz is reserved and not used as a standard receive frequency). The receiver bandwidth is ± 125 Hz. All of the above frequencies are transmitted as standard by the DS-7000 deck unit.

3.1.5 Transmit Frequency User selectable 7.5 to 17.0 kHz in 250 Hz increments.

3.1.6 Transmit Pulse Width 10 ms ±1 ms.

3.1.7 Command Channels


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Eight standard channels (A,B,C,D,E,F,G or H) are available from the deck unit which, in combination with the receive frequencies, provide 128 different codes of non-interfering operation. NOTE: The enable feature and the release feature require one command code each.

3.1.8 Release Indication a. Before releasing, unit will reply with one ping when interrogated. b. Immediately upon releasing, unit will automatically transmit four pings with 200 millisecond spacing. c. After releasing, unit will reply with five pings when interrogated, again separated by 200 milliseconds.

3.1.9 Slant Range Up to 10 km when used with the Model DS-7000 Deck Unit.

3.1.10 Enable Time Selectable up to 255 hours, normally shipped set to 12 hours. If “0” hours is selected, the unit will remain enabled permanently.

3.1.11 Beam Pattern Essentially omnidirectional in the upper hemisphere.

3.1.12 Minimum Detectable Signal Less than 85 dB re 1 micropascal.

3.1.13 Turnaround Delay 3 ms, standard (3-30 ms, optional).

3.1.14 Detection Jitter (or Repeatability)

±.1 milliseconds.

3.1.15 Receive Lockout Time 1.5 seconds, re-triggerable.


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3.1.16 Tilt Switch If selected, unit will respond to an interrogation with the normal respond ping, plus four additional pings 200 milliseconds apart, when the release is tilted more than 25 degrees from vertical.

3.1.17 Backup Timer

Note: As standard, this feature is NOT included in the release software. If requested, at the time of order, the backup timer will be included, and operates as described in this manual.

If enabled, the BACKUP timer will cause the 865 to automatically RELEASE a fixed number of hours (up to 65,535 hours , > 7 years!) after the unit is turned on. This feature can be used in the very special applications where a timed release function is desired. When this function is enabled, the unit will still respond to an acoustically transmitted RELEASE command.

WARNING: EXERCISE EXTREME CAUTION WHEN USING THE BACKUP TIMER FUNCTION.

3.2 Mechanical

3.2.1 Load Capacity 10,000 pounds (4540 Kg). Please refer to Application Note #865-001 in the Appendix.

3.2.2 Depth Rating 12,000 meters (39,370 feet). All units tested for acoustic actuation under pressure and load.

3.2.3 Dimensions Refer to Figure 1.1, Outline Drawing.

3.2.4 Weight Refer to Figure 1.1, Outline Drawing.

3.2.5 Accessories


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n 865-SL Spare Link (supplied) n 865-A-SPK Spare Parts Kit (supplied) n Model DS-7000 Deck Unit n 865-SB-13 Spare Battery Pack n 865-SA-K1 Spare Anode Kit.

4.0 OPERATIONAL USE

4.1 The Switch A rotary switch is mounted in the release end cap (see Figure 4-1). An engraved arrowhead marks the switch position. There are three positions: a. HOLD-EXTEND. Here the 865-A is OFF. When switched to this position, the pin will extend

if it is not already extended. Store the unit with the switch in this position.

IMPORTANT: When switching to HOLD-EXTEND, be sure that the lever is off to one side so that the pin will not jam into the end of the lever. If this does happen, the fuse will blow.

b. ON-ARMED. Here the 865-A is ON. This is the position the switch MUST be in when the unit

is deployed. The 865-A will ping four times to let you know it has powered-up successfully. c. TEST-RETRACT. Here the 865-A is ON and the pin will retract. Use this position when

reloading an expendable link. Note that a four-ping burst occurs when the pin is fully retracted.

4.2 Testing It is always a good idea to test any instrument on deck prior to deployment. To test the 865-A, simply follow these steps:

4.2.1 Power On Using a coin or screwdriver, turn the switch to the ON-ARMED position. The release will signal to you that it has powered up successfully by transmitting four pings.

4.2.2 Single Transpond a. Place your deck unit transducer near the 865-A transducer. Set the TRANSMIT

FREQUENCY (Tx) to the receive frequency of the 865-A and the RECEIVE FREQUENCY


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(Rx) to the transmit frequency of the 865-A. The receive and transmit frequencies are written on the external label of the 865-A.

b. Send a single transpond from the deck unit. The release should reply once simultaneously. Place

your finger on the transducer and you will be able to actually feel the transmission.

Actuation and Test Switch, shown in the HOLD-EXTEND position

Figure 4-1


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Note that the 865-A will not respond to transmissions within 1.5 seconds of each other. This is the standard LOCKOUT feature which prevents extra replies from multipaths.

Also note that if the ENABLE time has run out, the 865-A will not reply at all. (See Section

6.3.1.) c. Change the Tx Frequency selected on the deck unit and now verify that the unit DOES NOT

reply when interrogated. The unit should only respond to the proper frequency.

4.2.3 Command Enable To test the ENABLE feature, leave the release ON-ARMED until the Enable Timer runs out. This may take 12 hours, depending on value selected. Then verify that it will not reply when interrogated. Place the deck unit transducer very close to the 865-A, similar to Figure 4-2. Next send an ENABLE command and afterwards verify that the unit will reply when interrogated. To send a command, follow these steps: a. Set the TRANSMIT FREQUENCY (Tx) on the deck unit to the receive frequency of the 865-A

being commanded, as in 4.2.2a. b. In the Command Mode, select the letter codes designated on the 865-A for ENABLE. c. Send a command. During the middle of the command you may hear the 865-A ping once as it

"wakes up". d. Send a single transpond and verify that the ENABLE command was successful, i.e. the 865-A

does reply. If not, move the deck unit transducer slightly and try another command.

NOTE: It is sometimes very difficult to get a command through the air. If you have trouble, do not panic! This is normal, as the system is designed to operate in water where the sound paths are more predictable. Simply move the transducers to slightly different positions, often a change of as little as one inch (1") is all that is necessary to make the difference. It may be helpful to line the test area with foam rubber to dampen reverberations.

Because of the long wait for the ENABLE timer it is not necessary to test this feature routinely.

However, it is recommended that you test it at least once so that you are completely familiar with its operation.


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4.2.4 Command Release To test the RELEASE function, be sure that the unit is ON-ARMED with the pin extended. Place the deck unit transducer very close to the 865-A, similar to Figure 4-2. Send a RELEASE command: a. Set the deck unit TRANSMIT FREQUENCY (Tx) to the receive frequency of the 865-A, as in

4.2.2a. b. Set the COMMAND to the letter code designated on the 865-A for RELEASE. c. Send a Command. NOTE: It is sometimes very difficult to get a command through in air. If you have trouble, do not

panic! This is normal, as the system is designed to operate in water where the sound paths are more predictable. Simply move the transducers to slightly different positions - often as little as one inch (1") is all that is necessary to make the difference. It may be helpful to line the test area with foam rubber to dampen reverberations.

When a command is successfully received, note that the release pin will fully retract so that the lever may swing free. At full retraction, the motor shuts off and the 865-A will automatically transmit four pings.

d. Now send several single transponds on the proper code and verify that bursts of five pings occur

from the 865-A.

Transducer Configuration for Command Test in Air

Figure 4-2


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4.3 Deployment Before deployment be sure the following has been done: n Inspection for damage, inside and out n O-rings inspected and lightly greased n Battery voltage tested and battery changed if necessary n New anode properly installed and tightened n Functional test complete. The unit may now be attached to the mooring assembly to be deployed. The mooring assembly should have been designed with the following considerations: n Maintain electrical isolation between the 865-A and the rest of the assembly to avoid corrosion

problems. The 865-A and spare links are fitted with plastic (Delrin) bushings for this purpose. n Have a long enough tether between the 865-A and the anchor to avoid damage due to overshoot

when the anchor hits the bottom. n Provide a clear acoustic path to the surface from the transducer of the 865-A.

WARNING: Be sure that the 865-A is switched to ON-ARMED before deploying.

After the 865-A, with its instrumentation and mooring packages is deployed, the deck unit can be put into RANGING MODE Repetitive STOP/START ENABLED. (Please refer to the DS-7000 manual for a detailed discussion of this feature.) Now a constant update of SLANT RANGE will be maintained until the maximum range is reached. NOTE: The 865-A will stop replying at the end of the programmed enable time. See Section 6.3.1 for details.

4.4 Recovery Using surface navigation techniques, return to the general area of the mooring. Then stop the vessel and lower the deck unit transducer over the side, as deep as possible. Chances are by this time the ENABLE timer has run out, so first send an ENABLE command. Then send a single transpond and verify that the release does reply. Read the slant range off the deck unit and move the ship if you wish to get closer.


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NOTE: In some extreme cases, ship noise may prevent the deck unit from receiving replies from the 865-A. Try to reduce the background noise by shutting down unnecessary equipment, especially propulsion. If there is still no response, do not panic! Most likely, the 865-A is hearing the deck unit fine, but the noise at the surface is too great to hear the 865-A. Go ahead and send the RELEASE command and as the release approaches the surface, you will probably be able to range on it. Also, remember that the 865-A will automatically ENABLE itself when the release occurs, even if you were not able to successfully command it to ENABLE. Normally, when the ship is in position and consistent slant ranges are being achieved, then the RELEASE command may be transmitted. If successful, the release will automatically transmit a four-ping burst which will be seen or heard by watching the receive LED or listening on the head phones of the deck unit. The ascent may be tracked by sending single transponds from the deck unit. Now the release will reply with five pings. An accurate slant-range will be displayed and the blink of the reply LED will indicate that the unit has released. The five-ping acknowledgment may also be clearly heard in the headphones. The 865-A will continue replying with five pings when interrogated until it is turned OFF. Watch for the surfacing floats and recover the package. Once on deck, turn the switch to HOLD-EXTEND (being careful not to jam the lever) and scrub the unit off with fresh water. If the release is going to be redeployed, follow the turnaround procedure in Section 7.1. 5.0 HARDWARE DESCRIPTION

5.1 Mechanical Parts

5.1.1 Housing (Part No. C-855-19) The housing consists of a 17-4 PH stainless steel tube with transducer guard, end cap, padeyes and closure bolts welded on. All parts are also 17-4 PH stainless steel. The housing is painted and a 1018 carbon steel anode is attached between the padeyes for corrosion protection.

5.1.2 End Cap Assembly (Part No. D-855-21) This modular subassembly consists of the release end cap, motor and pin retraction mechanism (see Drawing D-855-21). For pin retraction or extension, an extremely high torque motor is used to rotate a screw. The pin is attached to a low friction, ball-bearing nut which rides up and down the screw as the screw rotates, thus causing the pin to extend or retract. By design, the water pressure exerts a force which actually aids in the retraction, thus eliminating any fears of fouling or jamming.


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Limit switches mounted on the end cap control the range of the pin movement (see Figure 5-1).


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5.2 Electrical Parts 5.2.1 Battery Packs The standard battery pack consists of 18 alkaline 'D' cells arranged in two parallel strings of 9 cells each. These strings have an open circuit voltage of 13.5 volts when new and are tied together through isolation diodes on the battery pack connector board. The isolation diodes serve to protect the good string in the unlikely event that one string fails. Thus, there is redundancy designed into the battery pack. The battery pack is easily replaceable in the field. No soldering is required. See Section 7.1 for step-by-step instructions. Replacement battery packs are available from stock at Benthos at very reasonable prices.

5.2.2 Electronics Chassis Assembly (Part No. D-855-73) This modular assembly includes the battery tube, electronics tube, chassis end plates, connectors and circuit boards. The battery pack fits snugly into the battery tube and the circuit boards are protected by the electronics tube. When installed, a connector on the motor mates with a connector on the chassis assembly, thus providing circuit paths to the switches on the end cap assembly. Also, a connector on the top end automatically mates with the transducer when the housing is closed. Locating pins serve to align all connectors and prevent incorrect insertions. Two circuit boards are installed back to back with a connector in between. All critical signals are double pinned on this connector for the highest possible reliability.

5.2.2.1 865-A Board No. 1 (Part No. C-855-130) Board No. 1 contains all the large components required for transmitting, i.e. output transformer, inductor, power transistors and capacitors. It also contains the circuitry for transmit pulse gating, and the sensitive receiver preamplifier. The transducer is connected to this board. To remove Board No. 1, power OFF, disconnect the transducer connector, then remove the four corner screws and unplug the board (see Figure 5-2).


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Release Switching System

Figure 5-1


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Board No. 1 (Driver Board) Top View

Figure 5-2

Transducer Connector

Board No. 2 (Logic Board) Top View

Figure 5-3

Interface Connector

Programming Cable Connector


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5.2.2.2 865-A Board No. 2 (Part No. C-855-132) Board No. 2 contains the remaining receiver circuitry including the limiter amplifier, detector and the microprocessor based command decoder. Other functions on this circuit board are: n Transmit frequency synthesizer. n RELEASE acknowledgment (four extra pings). n RELEASE motor drive. n 5-volt regulation. To remove Board No. 2, power OFF, disconnect the interface connector; and remove the four corner screws and unplug the board (see Figure 5-3).

6.0 THEORY OF OPERATION

6.1 Receiver The receiver consists of four basic blocks: 1. Transducer 2. Preamplifier 3. Limiter-amplifier 4. Detector. The hydrophone converts the acoustic energy into an electrical signal. At long ranges, this signal may be very small, approximately 20 microvolts mixed with noise. The preamplifier is a very low noise amplifier which provides approximately 52 dB of gain and some filtering. The limiter amplifier provides another 52 dB of amplification and hard limits the signal to 1.2 volts peak to peak. The total gain of the system is more than 100,000! The limited signal, plus noise, is then fed into a frequency detector, which is factory tuned to detect a specific frequency between 7.0 and 15.0 kilohertz. If the correct frequency (±105 Hz) is present, then the detector output goes true.

WARNING: DO NOT ATTEMPT TO ADJUST THE FACTORY SET TUNING OF THE DETECTOR CIRCUIT .


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6.2 Command Theory The standard Benthos acoustic command consists of two separate frequencies alternating at a specific shift rate. One frequency, called the "in-band" frequency, is set to the RECEIVE frequency of the release. The other frequency, called the "out-of-band" frequency, is arbitrarily fixed at 12.5 kHz (actually the “out-of-band” frequency alternates between 12.5 kHz and 18 kHz on successive command transmissions) which are otherwise unused frequencies. The detector in the underwater release will respond "true" for the in-band frequency and "false" for the out-of-band frequency. Its output, therefore, will be a square wave whose frequency is the shift rate of the command. The command receive circuit then checks for a specific frequency of this square wave and, if it is correct for two complete seconds, the release function will be executed. There are a total of thirteen shift rates, although only eight are supported in the standard release (A-H) and they are designated by the letter part of the code. The shift rates are: A: 82.5 Hz B: 110.9 Hz C: 136.5 Hz D: 100.0 Hz E: 71.9 F: 77.0 G: 118.8 H: 127.3 Hz Codes I thru M require special release software and are typically reserved for special applications, they are: I: 123.0 Hz J: 131.8 K: 107.2 Hz L: 114.8 Hz M: 103.5 Hz The command code is decoded by a microprocessor on the logic board.

6.2.1 Command Release Upon receipt of the proper command code for RELEASE, a power MOSFET transistor is latched on, thus allowing the motor to run. Once started, the motor will run until the pin is fully retracted. Once the pin is fully retracted, the RELEASE LIMIT switch is actuated causing the motor to stop. A backup timer will disable the motor drive after approximately 40 seconds has elapsed, if the shaft has failed to reach the release position (it normally takes approximately 20 seconds).

6.3 Transmitter The transmitter consists of three basic blocks: 1. Transmit frequency synthesizer 2. Pulse control 3. Power amplifier.


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The transmit frequency synthesizer is based on a 50 kHz crystal oscillator. This oscillator feeds a phase lock loop network which synthesizes a particular frequency based on the stored value within the microprocessor. If the unit is ENABLED and the detector output goes true, then the pulse control circuitry allows the transmit frequency through to the power-amplifier for 10 milliseconds. The power-amplifier consists of two power MOSFET transistors, and a transformer steps up the AC signal to approximately 3,000 volts peak to peak. This is applied across the transducer which converts the electrical energy into acoustic energy. The same transducer element is used for both transmit and receive. 6.3.1 Command Enable/Timed Disable Feature The ENABLE feature prevents unwanted transmissions from occurring due to unauthorized transponding, other sonar equipment, or random interference. Whatever the source, the result could be a large number of unnecessary transponds by the 865-A which could result in premature battery drain. Basically it works as follows: The release powers up in the ENABLED state; that is, it will reply when it receives the proper frequency. It will then remain ENABLED for the selected time, up to 255 hours (a setting of “0” hours will disable this function, leaving the release enabled all the time). The default enable time is 12 hours which will usually be enough time to deploy the unit and range on it (if desired). If not, the user may simply send it an "ENABLE" command to extend (reset the timer) the enable time. Once the enable time runs out, the transmitter portion of the release is disabled until an ENABLE command is received or a release occurs. NOTE: If for whatever reason the unit is not "ENABLED" when a RELEASE command is received, the release will still take place. Upon completion of the release operation the unit will automatically ENABLE itself so that its ascent may be tracked.

6.3.2 Backup Timer Feature

If requested at the time of order, the 865 features a BACKUP timer function that is both very powerful and very dangerous. All standard releases are shipped with this function disabled (value set to 0). Extreme care should be exercised whenever using this feature. If enabled, the BACKUP timer will cause the 865 to automatically RELEASE a fixed number of hours (up to 65,535 hours , > 7 years!) after the unit is turned on. This feature can be used in the very special applications where a timed release function is desired. When this function is enabled, the unit will still respond to an acoustically transmitted RELEASE command.


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6.4 Tilt Theory The 865 Release contains a tilt sensor that will allow the operator to determine the general orientation of the release. The standard sensor will indicate when the release is tilted more than 25 degrees from vertical. When the tilt function is enabled and the release is tilted more than 25 degrees, it will respond to an interrogation with the normal respond ping, plus four additional pings 200 milliseconds apart (if not tilted, the unit will respond with the normal single ping). The tilt function can be turned on and turned off via an acoustic command (see section 7.1) and the power up state can be defined via the serial setup ( see section 7.5).

7.0 CHANGING THE RELEASE SETUP The model 865 release is shipped from the factory with all operating parameters set to the values specified by the customer. These values are visible on the waterproof label attached to the outside of the release, and thus in most instances, these values will not need to be changed by the operator. If , however, changes are required (to any parameter EXCEPT the receive frequency which is only set at the factory), they may be easily made via the RS-232 programming cable A-855-171 (see drawing in the back of the manual for a schematic of the required cable) supplied with the release. To connect the serial cable, open the housing to gain access to the electronics boards. Connect the cable to the board via J13 (see figure 5.3). Connect the DB-9 connector on the other end of the cable to the a computer running a terminal emulator (Procomm, Hyperterminal etc). Set the communications to the appropriate serial port (normally 1 or 2), with the following operating parameters: Baud Rate: 9600 Parity: (N)one Data Bits: 8 Start Bits: 1 Handshake: None Turn on the release, or if the unit is already on press the “Reset” switch SW1 on the board. The following opening screen should appear:


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Benthos Inc. – A-855-168 Rev X – MM/DD/YYYY Functions: N=None, R=Release, E=Enable, D=Disable, “+” = Tilt On, “-” = Tilt Off Command: A B C D E F G H --- --- --- --- --- --- --- --- Function: N E D R - + N N Transmit Frequency (Hz): 09500 Enable Time (Hrs): 00012 Backup Release Time (Hrs): 00000 Tilt Sensor Power Up State (E)nabled or (D)isabled: D Change: (C)ommands, (X)mit Freq, (B)ackup Time, (E)nable Time, (T)ilt:

Fig 7-1 Setup Opening Screen The following operating parameters may be changed from this menu:

7.1 Changing The Command Assignments

In the screen above, each command (A thru H) has a function assigned to it. The possible functions for each command are: N None No action taken R Release The release is RELEASED E Enable The release is ENABLED D Disable The release is DISABLED + Tilt On The TILT sense function is turned ON - Tilt Off The TILT sense function is turned OFF To change the command mapping. Press the <C> key (it is not necessary to type the <ENTER> key) from the main screen. You will be prompted to enter the desired function for each command as shown below: Functions: N=None, R=Release, E=Enable, D=Disable, “+” Tilt On, “-” Tilt Off Enter Desired Function (N,R,E,D, + or -) For Command A: N Enter Desired Function (N,R,E,D, + or -) For Command B: E Enter Desired Function (N,R,E,D, + or -) For Command C: D Enter Desired Function (N,R,E,D, + or -) For Command D: R Enter Desired Function (N,R,E,D, + or -) For Command E: + Enter Desired Function (N,R,E,D, + or -) For Command F: - Enter Desired Function (N,R,E,D, + or -) For Command G: N Enter Desired Function (N,R,E,D, + or -) For Command H: N

7.2 Changing The Transmit Frequency


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From the main the main screen press the <X> key to set the transmit frequency. The unit can be set to transmit any frequency from 7.000 Khz to 17.500 Khz, in 250 Hz increments. The value is entered in Hz, and 5 digits MUST be entered. So to enter 9.5Khz, enter 09500 (it is not necessary to type the <ENTER> key). Enter Transmit Frequency, 07000-17500 Hz (Enter 5 Digits): 09500

7.3 Changing The Enable Time To change the enable time, press <E> from the main screen. Enter the desired enable time. The valid range for this function is from 0 (which disables the ENABLE timer, leaving the unit permanently enabled) to 255 hours (>10 days). You MUST enter 5 digits, thus 0 is entered <00000> and 255 is entered <00255>. After power up, or the receipt of an ENABLE or RELEASE command, the 865 will respond to interrogations with an acoustic response until the time period selected has elapsed (unless a <0> is entered), after which the unit will be mute. If an ENABLE time of 0 Hours is selected, the unit will remain ENABLED until shut off or commanded acoustically to DISABLE. Enter Enable Time, 00000-00255 hrs, 0 = None (Enter 5 Digits): 00012

7.4 Changing the Backup Timer To change the BACKUP timer setting, press <B> from the main menu. Enter the desired BACKUP time from 0 (which disabled this function – the normal setting) to 65,539 hours (greater than 7 years). Upon being turned on, the 865 will wait for the prescribed BACKUP time and then automatically cause the unit to RELEASE.


Enter Backup Release Time,00000-65535 Hrs,0=None(Enter 5 Digits): 00000

7.5 Enabling And Disabling The Tilt Function (on initial power up) To ENABLE or DISABLE the tilt function (when unit powers up) press <T> from the main menu. To enable tilt sensing press <E>, to disable press <D>.


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This selection only establishes the POWER UP STATE of the tilt sense function. If ENABLED the unit will power up with the tilt indicator functioning. Regardless of this menu selection, the tilt function can be enabled or disabled via an acoustic command (if selected), see section 7.1. Enter Tilt Power Up State, (E)nabled or (D)isabled: D

8.0 MAINTENANCE

8.1 Step-by-Step Turnaround Procedure for the 865-A One big advantage of the Benthos 865-A Acoustic Release is its simple, low maintenance design which allows for very quick shipboard turnarounds. The following turnaround procedure and checklist are provided for ease of maintenance at sea.

Tools Needed Parts Needed

Bristle brush Battery Pack: 865-SB-13

Screwdriver

3/8" ignition wrench or small adjustable wrench

Voltmeter, ohmmeter Anode Kit: 865-SA-K

3/4" open end wrench Silicone grease

3/4" socket wrench Benthos Deck Unit: DS-7000

Scotch brite or wire brush Benthos Expendable Link: 865-SL STEP 1: RECOVERY

Promptly scrub the unit down with fresh water and bristle brushes. Clean all scum off of the transducer. Remove and discard all old anodes, but save the mounting hardware. STEP 2: REPLACE BATTERY PACK.

a. Move unit to a clean, dry workbench. Turn the release off by turning switch to HOLD-EXTEND. Open housing and slowly slide chassis assembly out, being careful not to scratch the O-ring surfaces. Unplug the battery pack connector. Remove the battery/electronics package by removing two nuts on opposite side of release mechanism mounting plate and pulling straight out (see Figure 8-1).


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Removal of Chassis

Figure 8-1 b. Next, remove the two nuts holding the battery pack cover plate on. c. Remove the old pack and discard it. d. Slide the new pack into the tube, so the locating pin at the bottom of the tube aligns with the

third (non-symmetric) hole in the battery pack. e. Replace the battery pack cover plate. Again, the locating pin on the underside of the cover

plate must be lined up with the third hole in the battery pack and the pin on the electronics section bulkhead.

f. Replace the nuts and washers of the pack interconnect rods and tighten. g. Slide the BATTERY/ELECTRONICS PACKAGE back on to the END CAP/ RELEASE

MECHANISM ASSEMBLY. Be sure that no wires are being pinched and that no connections are strained. Feed the connector(s) up through the large hole in the release mechanism mounting plate.

h. Attach the chassis ground and tighten the nuts holding the package on. Be sure to use the split

lock washers. i. Plug in the battery pack connector as shown in Figure 8-2 (two connectors for the double battery

version). Check for secure and complete seating.

Connector Installation

Figure 8-2


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j. Check the voltage at points 1 and 2 with respect to ground (chassis), (see Figure 8-3). The

voltage at each point should be very close to 13.5 volts.

Battery Pack Connector P.C. Board

Figure 8-3 k. Run the motor by turning the switch to "TEST-RETRACT". Notice that the voltage drops

slightly at points 1 and 2. This test verifies that both battery strings are supplying current. l. Return the switch to the HOLD-EXTEND position. Plug the electronic chassis back on and

secure it with two nuts, including the split and flat washers. STEP 3 - LIGHTLY GREASE THE O-RINGS a. Inspect the face and radial sealing O-rings for damage. If necessary, see Section 8.7 of this

manual for replacement instructions. b. Using silicone grease, lightly grease the face and radial sealing O-rings. It is EXTREMELY

IMPORTANT that only a very thin coating of grease is used. Too much grease could displace the O-ring when it is under pressure.

c. Also, very lightly grease the metal face seal outside of the O-ring and on the end of the

housing. Use just a very thin film of grease here to prevent crevice corrosion. STEP 4 - CLOSE THE HOUSING a. It is strongly recommended that the air inside the housing be very dry to prevent condensation

when the instrument is deployed. As the housing is being closed, purge the inside with dry nitrogen gas, then quickly close the housing.


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b. If dry nitrogen is not available, open the electronics tube and change the desiccant pack, (or dry out the old one in a low temperature oven). The indicator turns pink if the desiccant is saturated, blue if it is dry. Replace the desiccant pack on top of the blue capacitors and close the electronics tube.

c. Close the housing and tighten the nuts tight, i.e. approximately 15 foot/pounds. STEP 5 - INSTALL NEW ANODE a. Install the anode as shown on Drawing B-855-81, "Anode Installation Instructions". Be sure

to use all the specified hardware. STEP 6 - SYSTEM TEST a. Turn release to ON-ARMED. Listen for four pings.

NOTE: Pings on power-up only occur if unit was previously off for more than one or two seconds.

b. Set the deck unit to the proper code and send a single transpond. Because the transmit and reply

are happening almost simultaneously, the reply lamp may not always light. However, by lightly touching the transducer on the 865-A one can often feel the output pulse and thus verify that a reply is occurring.

Remember: If the unit is left on for longer than the enable time, it will stop replying.

c. Set the deck unit to the proper code and send a RELEASE command. For best results, place

the DS-7000 transducer about six inches away from the 865-A transducer (see Figure 4-2).

NOTE: It is sometimes very difficult to get a command through in air. If you have trouble, do not panic! This is normal, as the system is designed to operate in water where the sound paths are more predictable. Simply move the transducers to slightly different positions - often as little as one inch (1") is all that is necessary to make the difference. It may be helpful to line the test area with foam rubber to dampen reverberations.

When a command is successfully received, note that the release pin will fully retract so that the

lever may swing free. At full retraction, the motor shuts off and the 865-A will automatically transmit a burst of four pings.


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d. Now send several single transponds on the proper code and verify that five replies occur from the 865-A with each transpond.

STEP 7 - PREPARE FOR DEPLOYMENT At this point, the 865-A is ready for installation into the mooring or other appropriate hardware. a. With the release pin retracted, install the Benthos stainless steel expendable release link, then

turn the switch to HOLD-EXTEND. Be careful to avoid jamming the pin. b. When the pin has fully extended, turn the switch to ON- ARMED. Listen for power-up pings. c. Check that the white plastic inserts on each end of the 865-A are not damaged to reduce the

possibility of corrosion problems. The 865-A is now ready for deployment.


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8.2 865-A Turnaround Checklist DATE / /

865-A S/N ________, RELEASE CODE: , ENABLE CODE: ____, DISABLE CODE:

TILT PWR UP STATE: , TILT ON CODE: , TILT OFF CODE: , BACKUP TIME: Step 1: Recovery.

Scrub down, remove old anode. _______

Step 2: Replace battery pack.

New battery voltage: String No. 1 _______ volts String No. 2 _______ volts

Step 3: Very lightly grease O-rings and metal face seal. _______

Step 4: Close housing, purge with nitrogen. _______

Step 5: Install new anode. _______

All bolts tight. _______

Step 6: System test.

a. Single transpond _______ b. Command _______ c. Automatic four pings _______ d. Five ping reply _______

Step 7: Prepare for deployment.

a. Link installed _______ b. Switch "ON-ARMED" _______ c. Plastic inserts OK _______

DEPLOYMENT INFORMATION

Date: ____________________ Lat: ____________________ Lon: ______________ Set: ____________________ Drift: ______________ Depth: ____________________

Slant Ranges: ___________ meters at Lat: ___________ Lon: ___________

___________ meters at Lat: ___________ Lon: ___________

___________ meters at Lat: ___________ Lon: ___________


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Comments:

8.3 Preventative NOTE: Benthos offers several levels of standard refurbishment at reasonable prices. Contact the factory for further details. The end cap to housing seals comprise two large O-rings, No. 240 and No. 243. Every time the housing is opened, the following procedure should be adopted before reassembly. a. Wipe each O-ring and O-ring groove with a soft cloth to remove the dirt, old grease, etc. b. Carefully inspect each O-ring for signs of physical damage, holes, nicks, extrusions, etc. If the rings show no damage, then apply a thin film of silicone grease and reassemble. If the rings show damage, then follow the replacement procedure below. c. Avoid opening the housing on an open deck where salt, water, etc. can be blown onto the release

motor mechanism. If this happens, use a soft brush and air line to clean the mechanism. A solvent is not recommended as it may wash the lubricant from the thrust bearings.

d. A fine coating of oil applied to the exposed metal surfaces will assist in corrosion prevention, but be

careful not to get grease on the transducer or anode.

8.4 Replacing the Sealing Rings

8.4.1 End Cap to Housing Seals a. Remove the old O-ring by levering it gently out of its groove. Clean the groove with a soft cloth or

cotton swab dampened with alcohol.

CAUTION: Be very careful not to damage the O-ring grooves. Use a pliable material with dulled edges and corners to act as a lever.

b. Inspect the new O-ring for damage. Coat it with a thin film of high quality silicone grease. c. Press the new O-ring into the groove and ensure that it seats evenly.

8.4.2 End Cap Rotary Switch Shaft Seals


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This shaft is sealed with two No. 010 O-rings. It is advisable to replace these seals after every two years of operation. a. Use a 1/16-inch punch to drive the 1/16 x 1/4-inch roll pin out of the switch cam. b. Remove the cam from the shaft. The shaft will now easily push outward from the end cap. c. Replace both O-rings, as described in Section 7.7.1, except use a moving parts grease such as

"Versilube". d. Clean the shaft hole using alcohol and a cotton swab. e. Refit the switch shaft into the hole and mount the cam, making sure that it points in the same

direction as the arrow. Refit the roll pin.

8.4.3 Release Pin Seals This shaft is sealed with two No. 012 O-rings. It is advisable to replace these seals after every two years of operation. a. Set the end cap rotary switch to the TEST-RETRACT position. b. Open the housing and unplug the battery pack connector. c. Remove the battery/electronics chassis from the end cap assembly. d. Remove the 1.5 amp Slo-blo motor fuse. e. Remove the microswitches from the end cap complete with the wires, by removing the six switch-

mounting screws. After noting the location of each switch and the hardware associated with it, store carefully.

f. To remove the end cap from the release pin, cut the safety wire attached to the four end cap

mounting bolts, and remove the bolts using an 1/2-inch wrench while supporting the end cap. g. Carefully remove the end cap from the release pin leaving the spacers on the bolts in order to

prevent the release pin ball nut assembly from turning. Note the ball nut orientation. Once the end cap is off, tape the ball nut assembly in place so that it will not accidentally spin off.

CAUTION: It is VERY IMPORTANT that the ball nut assembly does not come off the threaded shaft as it has an assembly of loose internal ball bearings.


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h. Replace both O-rings as described in Section 7.7.1, except use a moving parts grease such as Versilube.

i. Clean the shaft hole using alcohol and a cotton swab. j. Making sure that the release pin ball nut assembly is correctly oriented, slide the end cap onto the

release pin and rotate the end cap so that the microswitch assembly screw holes correctly align. Also, the flat of the release lever should swing up against the flat on the release pin. Start the four retaining bolts and hand tighten.

k. Using an 1/2-inch wrench, tighten all four bolts uniformly in sequence ensuring that the release pin

remains square with respect to the end cap. Finally, torque all four bolts to 15 foot/pounds. l. Remount the microswitches onto the proper locations.

1. The limit switches SWE and SWD should straddle the roll pin on the release pin ball

nut assembly, and the levers should face inward.

2. The assembly of two microswitches, SWA and SWB, should be mounted on the HOLD-EXTEND side of the switch cam, with the levers facing outwards. There should be two insulator pads, one between the switches and one against the end cap.

3. The microswitch SWC is mounted on the TEST/RETRACT side of the switch cam, with its lever facing outwards. There should be an insulator pad against the end cap.

m. Turn the end cap rotary switch to the ON- ARMED position. n. Install the battery/electronics chassis and reconnect the battery pack connector. o. Install the motor fuse 1.5 amp Slo-Blo. p. Test the release operation by turning the end cap rotary switch to HOLD-EXTEND and TEST-

RETRACT positions while inspecting the correct operation. q. Install and bolt the assembly into the housing and test the operation, as described in Section 7.1.

8.5 Battery Pack Replacement See Section 8.1 step 2.

9.0 TROUBLESHOOTING


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NOTE: If the unit is opened, it will be necessary to use the extender cable included in the accessory kit. A. UNIT FAILS TO OPERATE WITH END SWITCH ROTATION.

(1) Battery cannot supply the motor current - new battery required.

(2) Motor fuse has blown - check the 1.5 amp Slo-Blo fuse situated on the battery lower end plate. Check that the limit switches are not faulty.

(3) Faulty microswitch or faulty mechanical actuation of microswitch. B. UNIT WILL NOT TRANSMIT SINGLE OR MULTIPLE PULSES.

(1) Is the selected interrogate frequency correct for the unit?

(2) Is the end cap switch set to ARMED?

(3) Is the Enable Board timed out? See Section 6.3.1. C. UNIT WILL TRANSMIT, BUT WILL NOT RELEASE.

(1) Check that manual release operates (end plate switch). If not, then check battery voltage and microswitches.

(2) Check that the switch is left in the ARMED position.

(3) Recheck that the deck unit TRANSMIT SELECT switch and the COMMAND SELECT switch are set correctly for release with this transponder.

(4) Reposition the deck unit transducer and try again.

(5) If there is still difficulty, open the housing and expose the P.C. boards. Replace the board set to repair any electrical board problems. Return the faulty boardset to Benthos for repair.


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10.0 DRAWINGS AND SPARE PARTS LISTS End Cap Assembly for Deep Sea Release D-855-21 + BOM List of Supplied Spare Parts (13 volt) A-855-100-SPK Chassis Assembly for Deep Sea Release D-855-73 + BOM Wiring Diagram for Octal Connectors B-855-191 Instructions for Anode Installation B-855-81 Tandem Release Configuration B-855-82 Tandem Release Link/Chain Assembly C-855-40 Top Assembly D-855-74 Programming Cable A-855-171

APPENDICES Application Note 500-001, Minimum Detectable Signal of Underwater Transponders Application Note 865-001, 865-A Acoustic Release, Definition of Load Ratings


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APPLICATION NOTE #500-001 SUBJECT: Minimum Detectable Signal (MDS) of Underwater Transponders Benthos specifies the MDS to be less than 85 dB re 1 uPascal for our underwater transponders. Most units typically test out to be between 75-80 dB re 1 uPascal during our standard acoustic pool test. The noise level in our pool approaches that of the deep ocean, i.e. approximately 50-60 dB re 1 uPascal at 10 kHz. What does this mean in terms of ranging capability? Let's take an example at 10 kHz. First, assume the Source Level Output (SLO) of the surface unit is 192 dB re 1 uPascal at 1 meter. Then, the transmission loss at maximum range is simply the difference between the SLO at the surface and the MDS on the bottom:

Transmission Loss = 192 dB - 85 dB = 107 dB From transmission loss tables, this figures corresponds to a maximum range of about 28 kilometers. This is more than adequate sensitivity, since the limiting factor in ranging capability is the reception at the surface, where the noise environment may be worse than the deep ocean by a factor of 30 dB or more, due to ship and surface noise. Therefore, further improvement of the sensitivity of the underwater receiver is not only unnecessary, but in fact, somewhat detrimental. As the sensitivity is brought closer and closer to the ambient noise level, the False Alarm Rate goes up resulting in unnecessary transponds that will drain the battery and confuse the surface receiver. Thus, by specifying the MDS to be less than 85dB re 1 uPascal at 1 meter, Benthos has insured adequate ranging capability while maintaining a negligible False Alarm Rate. It should also be noted that all Benthos receivers will maintain a Constant False Alarm Rate even if the ambient noise environment changes. This is known as a Constant False Alarm Rate or CFAR receiver. All Benthos deck units also have sensitivity controls that allow the operator to maximize the sensitivity for a particular noise environment. This essentially allows the operator to choose an acceptable False Alarm Rate, which is then held constant at that level by the electronics.


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APPLICATION NOTE #865-001 SUBJECT: 865-A Acoustic Release Definition of Load Ratings The Benthos Model 865-A Acoustic Release was designed as a deep water/high load releasing device. The current data sheet and manual state the "...load capacity is 4,540 kg (10,000 lbs.). This statement necessitates the definition of load rating. All loads discussed are assumed to be axial. Prior to shipment, all units are tested in a load-frame in our hydrostatic pressure chamber to 10,000 psi (6,700 meter depth) which induces a load of 6,600 lbs. (3,000 kg) and the unit is acoustically commanded through the chambers' wall as a second check of the release mechanism under hydrostatic conditions. The units have been tested to failure and, typically, the release lever will fail at around 17,000 lbs. (7,730 kg). What does all this mean? Conventional oceanographic mooring design typically employs hardware which will either experience static or dynamic loading. Static loads typically incorporate a 2:1 safety margin by their users, and dynamic loads usually have a 5:1 factor of safety on design. The 10,000 lb. (4,540 kg) rating is applied to the maximum load under any conditions. Therefore, if you anticipate only static loading and wish to work within a 2:1 safety margin, the maximum working load should be 5,000 lbs. (2,270 kg). For dynamic situations, the maximum working load should be 2,000 lbs. (900 kg). Any specific concerns should be addressed to Benthos where we can perform calibrated testing under static load conditions.


Benthos, Inc.

October 16, 1992 FRI, NOV 3, 2000, 11:52 AM BILL OF MATERIAL PAGE NO: 1 ================ AS OF 11/03/00 D-855-21 OPCODE: 0 IM REV: X ASSY,END CAP,865A Y=PART REQUIRED MODEL: 865A PF: N=PART DOES NOT PRINT ON SALES ORDER ECO NO: 7414 Y=PART PRINTS ON SALES ORDER W/O PRICE DATE OF LAST ECO: 10/06/99 P=PART PRINTS ON SALES ORDER WITH PRICE R DAYS O ITEM QTY PER YIELD EP DEFAULT OFF REFERENCE EFFECTIV OBSOLETE PART NUMBER DESCRIPTION P RV NO. ASSEMBLY FACTR UM SC QF QUANTITY SET SEQ DESIGNATOR DATE DATE ------------------ ------------------------------ - -- ---- --------- ----- -- -- -- -------- --- ---- ---------- -------- -------- A-855-27 SPACER,BEARING SUPP PLATE 0 A 1 4.000 1.000 EA B NN 4.000 0 0 00/00/00 99/99/99 A-855-30 SPACER,MOTOR SUPP PLATE 0 2 4.000 1.000 EA B NN 4.000 0 0 00/00/00 99/99/99 A-855-32 BRACKET,MTG,MICROSWITCH 0 A 3 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99 A-855-35 PIN,STOP 0 C 4 .000 1.000 EA B YN .000 0 0 00/00/00 99/99/99 A-855-38 SHAFT,SWITCH CAM 0 B 5 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99 A-855-39 CAM,SWITCH 0 A 6 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99 A-855-42 MOTOR,GLOBE #M5M199 0 J 7 1.000 1.000 EA B YN 1.000 0 0 00/00/00 99/99/99 A-855-47 SHAFT,CAM REL PIVOT 0 E 8 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99 A-855-51 WASHER,THRUST 0 C 9 2.000 1.000 EA B NN 2.000 0 0 00/00/00 99/99/99 A-855-53 PIN,GROOVE,5/16X1-3/16 0 A 10 2.000 1.000 EA B NN 2.000 0 0 00/00/00 99/99/99 A-855-54 MOD,SOCKET,MTG 0 B 11 1.000 1.000 EA M NN 1.000 0 0 00/00/00 99/99/99 A-855-56 BASE,CONN TUBE MTG 0 B 12 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99 A-855-57-1 TUBE,CONN MTG,DSR,1" LONG 0 C 13 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99 A-855-64-1 BOLT MODF,HEX,5-16-24X2-3/8 0 14 4.000 1.000 EA B NN 4.000 0 0 00/00/00 99/99/99 A-855-64-2 BOLT MODF,HEX,5/16-24X4-13/16 0 15 4.000 1.000 EA B NN 4.000 0 0 00/00/00 99/99/99 0119-046 SCREW,SKHDCP,DRILLED,10-32X3/8 0 16 4.000 1.000 EA F NN 4.000 0 0 00/00/00 99/99/99 B-855-14 MOUNT,BALL SCREW 0 B 17 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99 B-855-24 MOD,SCREW,BALL 0 E 18 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99 B-855-91 PLATE,MTG,RELEASE 0 A 19 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99 B-855-32 PLATE,BEARING SUPPORT 0 E 20 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99 B-855-184 LEVER,RELEASE,SS 0 A 21 1.000 1.000 EA B YN 1.000 0 0 10/06/99 99/99/99 0204-010 RING,O,1/4 X 1/16,#2-010,70,BN 0 22 2.000 1.000 EA B NN 2.000 0 0 00/00/00 99/99/99 0204-243 RING,0,4-1/8X1/8,70DURO,2-243 1 23 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99 0204-240 RING-O,3-3/4 X 1/8,#2-240,70 0 24 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99 0503-046 SWITCH,MICRO,111SM1-T 0 25 5.000 1.000 EA B NN 5.000 0 0 00/00/00 99/99/99 0412-108 HOLDER,FUSE,LITTELFUSE#357001 0 26 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99 0501-016 FUSE,1-1/2A,SB,BUSS MDL1-1/2 1 27 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99 0423-044 STANDOFF,CAMB #572-4823-020516 0 28 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99 0222-018 NUT,BALL,SAGINAW 570-7508 0 29 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99 0222-014 BEARING,NDLE THR,TOR NTA-1220 0 30 2.000 1.000 EA B NN 2.000 0 0 00/00/00 99/99/99 0222-015 RACE,NDL THR BRNG,TOR TRA-1220 0 31 4.000 1.000 EA B NN 4.000 0 0 00/00/00 99/99/99 0222-017 WASHER,BEARING LOCK,WHITT WO-2 0 33 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99 0222-016 LOCKNUT,BEARING,WHITTET N-02 0 34 1.000 1.000 EA B NN 1.000 0 0 00/00/00 99/99/99


Benthos, Inc.

0801-001 WIRE,.032 DIA,SAFETY,SS 0 35 .000 1.000 RL F NN .000 0 0 00/00/00 99/99/99 R DAYS PAGE NO: 2 O ITEM QTY PER YIELD EP DEFAULT OFF REFERENCE EFFECTIV OBSOLETE PART NUMBER DESCRIPTION P RV NO. ASSEMBLY FACTR UM SC QF QUANTITY SET SEQ DESIGNATOR DATE DATE ------------------ ------------------------------ - -- ---- --------- ----- -- -- -- -------- --- ---- ---------- -------- -------- 0144-007 WASHER,SPLIT LOCK,300,#2X .020 0 40 10.000 1.000 EA F NN 10.000 0 0 00/00/00 99/99/99 0143-007 WASHER,FLAT,18-8,#2,7/32X .020 0 41 8.000 1.000 EA F NN 8.000 0 0 00/00/00 99/99/99 0144-019 WASHER,SPLIT LOCK,18-8,#6X.031 0 43 6.000 1.000 EA F NN 6.000 0 0 00/00/00 99/99/99 0144-013 WASHER,SPLIT LOCK,300,#4X .025 0 44 4.000 1.000 EA F NN 4.000 0 0 00/00/00 99/99/99 0198-101 NUT,HEX,3/8-16,316SS 0 45 1.000 1.000 EA F NN 1.000 0 0 00/00/00 99/99/99 0198-201 WASHER,SPLIT LOCK,3/8,316SS 0 46 1.000 1.000 EA F NN 1.000 0 0 00/00/00 99/99/99 0198-200 WASHER,FLAT,3/8,316SS 0 47 1.000 1.000 EA F NN 1.000 0 0 00/00/00 99/99/99 0423-015 TERMINAL,RING,#10,AMP #36154 0 48 1.000 1.000 EA F NN 1.000 0 0 00/00/00 99/99/99 0128-077 SCREW,PH MACH,18-8,2-56 X 1 0 49 2.000 1.000 EA F NN 2.000 0 0 00/00/00 99/99/99 0128-065 SCREW,PH MACH,18-8,2-56 X 7/16 0 51 6.000 1.000 EA F NN 6.000 0 0 00/00/00 99/99/99 0128-259 SCREW,PH MACH,18-8,6-32 X 3/8 0 52 1.000 1.000 EA F NN 1.000 0 0 00/00/00 99/99/99 0128-253 SCREW,PH MACH,18-8,6-32 X 1/4 0 53 2.000 1.000 EA F NN 2.000 0 0 00/00/00 99/99/99 0128-160 SCREW,PH MACH,18-8,4-40 X 7/16 0 54 4.000 1.000 EA F NN 4.000 0 0 00/00/00 99/99/99 D-855-9 MOD.,END CAP,865 RELEASE 0 L 55 1.000 1.000 EA M NN 1.000 0 0 00/00/00 99/99/99 0905-004 GREASE,SPECIAL MARINE,LUB-A 0 57 .000 1.000 EA F NN .000 0 0 00/00/00 99/99/99 0222-013 BUSHING, BRONZE, BOS GR B10125 0 58 .000 1.000 EA B YN .000 0 0 00/00/00 99/99/99 0420-102 SOCKET,WIREPRO #78S8,BLACK 0 60 .000 1.000 EA B YN .000 0 0 00/00/00 99/99/99 0222-019 BUSHING,BRNZ BO-GEAR# B1012-10 0 61 .000 1.000 EA B YN .000 0 0 00/00/00 99/99/99 D-855-14 CASTING,RELEASE END CAP, 865 0 D 62 .000 1.000 EA B YN .000 0 0 00/00/00 99/99/99 0204-012 RING-O,3/8 X 1/16,#2-012,70,BN 0 63 2.000 1.000 EA B NN 2.000 0 0 00/00/00 99/99/99 0119-047 SCREW,SKHDCP,18-8,10-32 X 3/8 0 64 .000 1.000 EA F YN .000 0 0 00/00/00 99/99/99 0199-039 BOLT,HEX,5/16-24X5-1/2 0 65 .000 1.000 EA B YN .000 0 0 00/00/00 99/99/99 0199-038 BOLT,HEX,5/16-24X2-1/2 0 66 .000 1.000 EA B YN .000 0 0 00/00/00 99/99/99 0411-201 WIRE,BLK,20AWG,19/32 0 67 .000 1.000 FT F NN .000 0 0 00/00/00 99/99/99 0125-121 SCREW,FHMACH,18-8,4-40X1-1/4 0 69 2.000 1.000 EA F NN 2.000 0 0 00/00/00 99/99/99 0128-071 SCREW,PH MACH,18-8,2-56 X 5/8 0 70 2.000 1.000 EA F NN 2.000 0 0 00/00/00 99/99/99 0902-018 SPRAY,SILICONE,WD-40 0 71 .000 1.000 EA F NN .000 0 0 00/00/00 99/99/99 0503-109 PAD,INSULATOR,MICRO,AT-11416 0 73 5.000 1.000 EA B NN 5.000 0 0 00/00/00 99/99/99 0128-275 SCREW,PH MACH,18-8,6-32X1-1/8 0 74 2.000 1.000 EA F NN 2.000 0 0 00/00/00 99/99/99 0217-007 SPACER,#6X3/4"BR,SMITH #2103 0 75 2.000 1.000 EA B NN 2.000 0 0 00/00/00 99/99/99 0425-012 TUBING,CLEAR,MYLAR,1.312X.005 0 76 1.000 1.000 EA F NN 1.000 0 0 00/00/00 99/99/99 B-855-77 DIAGRAM,WIRING,RELEASE END CAP 0 C 77 .000 1.000 EA F YN .000 0 99 00/00/00 99/99/99 0425-001 TUBING,SHRINK,3/32,CLEAR 0 78 .000 1.000 FT F NN .000 0 0 00/00/00 99/99/99 0143-018 WASHER,FLAT,18-8,#6,1/4 OD 0 79 2.000 1.000 EA F NN 2.000 0 0 00/00/00 99/99/99 B-855-92 ASSY,PCB,BATTERY CONNECTOR 0 D 80 1.000 1.000 EA M NN 1.000 0 0 00/00/00 99/99/99 B-855-102 PLATE,COUPLING CENTER,865B 0 81 1.000 1.000 EA B YN 1.000 0 0 00/00/00 99/99/99 A-855-99 END PLATE ASSY,SHAFT COUPLING 0 A 82 2.000 1.000 EA B YN 2.000 0 0 00/00/00 99/99/99


Benthos, Inc.

0114-051 SCREW,SET,SKHD,18-8,6-32X1/8 0 83 2.000 1.000 EA F YN 2.000 0 0 00/00/00 99/99/99 A-855-67 KEY,SHAFT 0 C 84 4.000 1.000 EA B YN 4.000 0 0 00/00/00 99/99/99 A-855-78 MOD,MOTOR 0 A 85 .000 1.000 EA B YN .000 0 0 00/00/00 99/99/99 0905-020 GREASE,DRYDENE#55553 0 86 .000 1.000 EA F YN .000 0 0 00/00/00 99/99/99 TR.D85521 TRAVELLER,END CAP,DEEP SEA REL 0 E 87 .000 1.000 EA F YN .000 0 0 00/00/00 99/99/99 IP.D85521 INSPECTION PROC,END CAP,865 0 C 89 .000 1.000 EA F YN .000 0 0 00/00/00 99/99/99


Benthos, Inc.


Benthos, Inc.


Benthos, Inc.

A-855-100-SPK OPCODE: 0 IM REV: E SPK,DEEP SEA REL,13V Y=PART REQUIRED MODEL: PF: N=PART DOES NOT PRINT ON SALES ORDER ECO NO: 7073 Y=PART PRINTS ON SALES ORDER W/O PRICE DATE OF LAST ECO: 07/08/98 P=PART PRINTS ON SALES ORDER WITH PRICE R DAYS O ITEM QTY PER YIELD EP DEFAULT OFF REFERENCE EFFECTIV OBSOLETE PART NUMBER DESCRIPTION P RV NO. ASSEMBLY FACTR UM SC QF QUANTITY SET SEQ DESIGNATOR DATE DATE ------------------ ------------------------------ - -- ---- --------- ----- -- -- -- -------- --- ---- ---------- -------- -------- 0403-129 JUMPER,BERG 65474-001 0 2 2.000 1.000 EA B YN 2.000 0 0 00/00/00 99/99/99 0501-105 FUSE,5A,PICOFUSE 255005 0 3 2.000 1.000 EA B YN 2.000 0 0 00/00/00 99/99/99 0501-016 FUSE,1-1/2A,SB,BUSS MDL1-1/2 1 4 2.000 1.000 EA B YN 2.000 0 0 00/00/00 99/99/99 IP.SPK INSPECTION PROCEDURE,SPK 0 B 6 .000 1.000 EA F YN .000 0 0 00/00/00 99/99/99


Benthos, Inc.

FRI, NOV 3, 2000, 2:11 PM BILL OF MATERIAL PAGE NO: 1 ================ AS OF 11/03/00 CLASS CODE GROUP: 1 UNCLASSIFIED CLASS CODE: 501 FUSES D-855-73 OPCODE: 0 IM REV: A ASSY CHASSIS 865/866 DIG Y=PART REQUIRED MODEL: PF: N=PART DOES NOT PRINT ON SALES ORDER ECO NO: Y=PART PRINTS ON SALES ORDER W/O PRICE DATE OF LAST ECO: 00/00/00 P=PART PRINTS ON SALES ORDER WITH PRICE R DAYS O ITEM QTY PER YIELD EP DEFAULT OFF REFERENCE EFFECTIV OBSOLETE PART NUMBER DESCRIPTION P RV NO. ASSEMBLY FACTR UM SC QF QUANTITY SET SEQ DESIGNATOR DATE DATE ------------------ ------------------------------ - -- ---- --------- ----- -- -- -- -------- --- ---- ---------- -------- -------- A-855-54 MOD,SOCKET,MTG 0 B 1 1.000 1.000 EA M YN 1.000 0 0 00/00/00 99/99/99 A-855-55 MOD,PLUG,DEEP SEA REL 0 B 2 1.000 1.000 EA M YN 1.000 0 0 00/00/00 99/99/99 A-855-57-5 TUBE,CONN MTG,DSR,.972" LONG 0 C 3 1.000 1.000 EA B YN 1.000 0 0 00/00/00 99/99/99 A-855-95 TIE ROD, 865B DSR BATTERY PACK 0 4 2.000 1.000 EA B YN 2.000 0 0 00/00/00 99/99/99 A-855-172 LABEL, ACOUSTIC MODEL/SERIAL 0 *A 5 .000 1.000 EA B YN .000 0 0 00/00/00 99/99/99 B-855-93 PLATE,INTERMEDIATE,865B DSR 0 E 6 1.000 1.000 EA B YN 1.000 0 0 00/00/00 99/99/99 B-855-94 PLATE,BOTT COVER,865B DSR 0 C 7 1.000 1.000 EA B YN 1.000 0 0 00/00/00 99/99/99 B-855-95 TUBE,BATTERY,865B DSR 0 E 8 1.000 1.000 EA B YN 1.000 0 0 00/00/00 99/99/99 B-855-96 PLATE,MTG,TOP,865B PCB 0 E 9 1.000 1.000 EA B YN 1.000 0 0 00/00/00 99/99/99 B-855-97 TUBE,ELEC CHASSIS,865B DSR 0 E 10 1.000 1.000 EA B YN 1.000 0 0 00/00/00 99/99/99 B-855-98 PLATE,COVER,PCB 0 C 11 1.000 1.000 EA B YN 1.000 0 0 00/00/00 99/99/99 B-855-100 TUBE,BATTERY END CONN.MTG,865B 0 B 12 1.000 1.000 EA B YN 1.000 0 0 00/00/00 99/99/99 A-855-170 ASSY,PCB SET,865,DIG COMMAND 0 A 15 1.000 1.000 EA M YN 1.000 0 0 00/00/00 99/99/99 0217-036 SPACER,5/16 X 1/2 0 16 3.000 1.000 EA B YN 3.000 0 0 00/00/00 99/99/99 0199-074 SCREW,BUTTON HEAD CAP 8-32X3/4 0 17 3.000 1.000 EA F YN 3.000 0 0 00/00/00 99/99/99 0144-022 WASHER,SPLIT LOCK,18-8,#8 0 18 3.000 1.000 EA F YN 3.000 0 0 00/00/00 99/99/99 0128-079 SCREW,PH 2-56 X 1 3/16 18-8 SS 0 20 2.000 1.000 EA F YN 2.000 0 0 00/00/00 99/99/99 0125-114 SCREW,FHMACH,18-8,4-40X5/8 0 21 2.000 1.000 EA F YN 2.000 0 0 00/00/00 99/99/99 0125-113 SCREW,FHMACH,18-8,4-40X1/2 0 22 2.000 1.000 EA F YN 2.000 0 0 00/00/00 99/99/99 0125-056 SCREW,FHMACH,18-8,2-56X1/2 0 23 2.000 1.000 EA F YN 2.000 0 0 00/00/00 99/99/99 0128-078 SCREW,PH MACH,18-8,2-56X1-1/8 0 24 2.000 1.000 EA F YN 2.000 0 0 00/00/00 99/99/99 0144-007 WASHER,SPLIT LOCK,300,#2X .020 0 25 4.000 1.000 EA F YN 4.000 0 0 00/00/00 99/99/99 0125-250 SCREW,FHMACH,18-8,10-32X7/16 0 26 2.000 1.000 EA F YN 2.000 0 0 00/00/00 99/99/99 0101-028 NUT,HEX,18-8,10-32 0 27 4.000 1.000 EA F YN 4.000 0 0 00/00/00 99/99/99 0144-025 WASHER,SPLIT LOCK,300,#10X.047 0 28 2.000 1.000 EA F YN 2.000 0 0 00/00/00 99/99/99 0425-004 TUBING,SHRINK,1/4,ASTRA AF 0 29 .000 1.000 FT F YN .000 0 0 00/00/00 99/99/99 0425-012 TUBING,CLEAR,MYLAR,1.312X.005 0 30 .500 1.000 EA F YN .500 0 0 00/00/00 99/99/99 A-855-143 LABEL,WARNING HIGH VOLTAGE 0 A 31 1.000 1.000 EA F YN 1.000 0 0 00/00/00 99/99/99 B-855-107-1 CUSHION,FOAM BATTERY 0 A 35 1.000 1.000 EA B YN 2.000 0 0 00/00/00 99/99/99 B-855-167 WIRING DIAGRAM,OCTAL CONNECTOR 0 A 36 .000 1.000 EA M YN .000 0 0 00/00/00 99/99/99 0903-012 TAPE,DBL-SIDED,2" X 36 YDS. 0 38 .000 1.000 EA F YN .000 0 0 00/00/00 99/99/99 B-500-13 LABEL,PCB FOR INSIDE XT-6000 0 A 39 2.000 1.000 EA F YN 2.000 0 0 00/00/00 99/99/99


Benthos, Inc.

0900-022 THREADLOCKER,LOCTITE#290-21 0 40 .000 1.000 EA F YN .000 0 0 00/00/00 99/99/99 008955 SWITCH, TIP-OVER CM1725-1 0 43 1.000 1.000 EA B YN 1.000 0 0 10/17/00 99/99/99 B-867-13 MOUNT,TILT SWITCH 0 A 44 1.000 1.000 EA B YN 1.000 0 0 10/17/00 99/99/99 0125-112 SCREW,FHMACH,18-8,4-40X5/16 0 45 2.000 1.000 EA F YN 2.000 0 0 10/17/00 99/99/99 0128-150 SCREW,PH MACH,18-8,4-40 X 3/16 0 46 1.000 1.000 EA F YN 1.000 0 0 10/17/00 99/99/99 0144-013 WASHER,SPLIT LOCK,300,#4X .025 0 47 1.000 1.000 EA F YN 1.000 0 0 10/17/00 99/99/99 0143-013 WASHER,FLAT,18-8,#4,5/16X.032 0 48 1.000 1.000 EA F YN 1.000 0 0 10/17/00 99/99/99 IP.RELCHS INSPECTION PROC,RELEASE CHASS. 0 C 998 .000 1.000 EA F YN .000 0 0 00/00/00 99/99/99 TR.RELCHS TRAVELLER,RELEASE CHASSIS ASSY 0 C 999 .000 1.000 EA F YN .000 0 0 00/00/00 99/99/99


Benthos, Inc.


Benthos, Inc.


Benthos, Inc.


Benthos, Inc.


Benthos, Inc.


Benthos, Inc.


Benthos, Inc.


Benthos, Inc.

D-855-74 OPCODE: 0 IM REV: A ASSY,RELEASE,865A DIG Y=PART REQUIRED MODEL: PF: N=PART DOES NOT PRINT ON SALES ORDER ECO NO: Y=PART PRINTS ON SALES ORDER W/O PRICE DATE OF LAST ECO: 00/00/00 P=PART PRINTS ON SALES ORDER WITH PRICE R DAYS O ITEM QTY PER YIELD EP DEFAULT OFF REFERENCE EFFECTIV OBSOLETE PART NUMBER DESCRIPTION P RV NO. ASSEMBLY FACTR UM SC QF QUANTITY SET SEQ DESIGNATOR DATE DATE ------------------ ------------------------------ - -- ---- --------- ----- -- -- -- -------- --- ---- ---------- -------- -------- C-855-67 ASSY,XDUCER 865A 0 N 1 1.000 1.000 EA M YN 1.000 0 0 00/00/00 99/99/99 D-855-21 ASSY,END CAP,865A 0 X 2 1.000 1.000 EA M YN 1.000 0 0 00/00/00 99/99/99 B-855-186 ASSY,LINK,EXPENDABLE,MACHINED 1 A 3 1.000 1.000 EA M YN 1.000 0 0 03/09/00 99/99/99 A-855-81 ANODE,BAR 0 H 4 1.000 1.000 EA B YN 1.000 0 0 00/00/00 99/99/99 C-855-49 HOUSING,865,PAINTED 0 B 5 1.000 1.000 EA MS YN 1.000 0 0 00/00/00 99/99/99 C-855-60 BATTERY PACK ASSY,865A 0 F 6 1.000 1.000 EA B YN 1.000 0 0 10/18/00 99/99/99 D-855-73 ASSY CHASSIS 865/866 DIG 0 A 7 1.000 1.000 EA M YN 1.000 0 0 00/00/00 99/99/99 0904-023 LABEL,BENTHOS MYLAR,12X3 0 9 2.000 1.000 EA F YN 2.000 0 0 00/00/00 99/99/99 0101-028 NUT,HEX,18-8,10-32 0 10 2.000 1.000 EA F YN 2.000 0 0 00/00/00 99/99/99 0144-025 WASHER,SPLIT LOCK,300,#10X.047 0 11 2.000 1.000 EA F YN 2.000 0 0 00/00/00 99/99/99 A-855-163 BUSHING,BAIL JUNCT 0 A 12 2.000 1.000 EA B YN 2.000 0 0 03/09/00 99/99/99 0101-046 NUT,HEX,18-8,1/2-13 0 13 2.000 1.000 EA F YN 2.000 0 0 00/00/00 99/99/99 0143-043 WASHER,FLAT,18-8,1/2X.078 0 14 4.000 1.000 EA F YN 4.000 0 0 00/00/00 99/99/99 0198-210 WASHER,SPLIT LOCK,316,1/2 0 15 2.000 1.000 EA F YN 2.000 0 0 00/00/00 99/99/99 0144-043 WASHER,SPLIT LOCK,18-8,1/2 0 17 4.000 1.000 EA F YN 4.000 0 0 00/00/00 99/99/99 0002-013 COPPER,3/16",ANNEALED BALLS 0 18 2.000 1.000 EA B YN 2.000 0 0 00/00/00 99/99/99 M-855-009 MANUAL,ACOUSTIC RELEASE 0 A 19 1.000 1.000 EA M YN 1.000 0 0 00/00/00 99/99/99 0600-117 DESICCANT 02-00040AG19 0 20 1.000 1.000 EA F YN 1.000 0 0 00/00/00 99/99/99 0198-103 NUT,HEX,316,1/2-20 0 21 2.000 1.000 EA F YN 2.000 0 0 00/00/00 99/99/99 0212-312 CONTAINER,SHIPPG,865-A RELEASE 0 22 1.000 1.000 EA B YN 1.000 0 0 00/00/00 99/99/99 0119-138 SCREW,SKHDCP,18-8,1/4-28 X 1 0 23 2.000 1.000 EA F YN 2.000 0 0 00/00/00 99/99/99 0144-031 WASHER,SPLIT LK,18-8,1/4 X.031 0 24 2.000 1.000 EA F YN 2.000 0 0 00/00/00 99/99/99 D-855-74-SPK SPK,DEEP SEA REL,13V 0 E 25 1.000 1.000 EA M YN 1.000 0 0 00/00/00 99/99/99 B-855-69 CABLE,EXTENDER 865A 1 F 29 .200 1.000 EA M YN .200 0 0 00/00/00 99/99/99 A-855-172 LABEL, ACOUSTIC MODEL/SERIAL 0 B 45 2.000 1.000 EA B YN 2.000 0 0 00/00/00 99/99/99 TP.865_866 TEST PROC,865/866 W/A855170 0 A 990 .000 1.000 EA F YN .000 0 0 REF 00/00/00 99/99/99 A-855-171 CABLE,PROGRAMMING,867-A 0 1 994 .000 1.000 EA X YN .000 0 0 00/00/00 99/99/99 IP.RELEASE INSPECTION PROC,HSG AND ASSY 0 E 995 .000 1.000 EA F YN .000 0 0 00/00/00 99/99/99 TR.RELEASE TRAVELLER,RELEASE HOUSING ASSY 0 D 996 .000 1.000 EA F YN .000 0 0 00/00/00 99/99/99 RS.D85574 REV.SHEET,865 REL W/A855170 0 A 997 .000 1.000 EA F YN .000 0 0 REF 11/01/00 99/99/99 PS.RELEASE PROCESS SHEET800 & 900 RELEASE 0 A 998 .000 1.000 EA F YN .000 0 0 00/00/00 99/99/99 TP.POOLTEST TEST PROCEDURE,POOL TEST 0 B 999 .000 1.000 EA F YN .000 0 0 REF 00/00/00 99/99/99


Benthos, Inc.


Benthos, Inc.


Benthos, Inc.


Benthos, Inc.

A-855-171 OPCODE: 0 IM REV: 1 CABLE,PROGRAMMING,867-A Y=PART REQUIRED MODEL: PF: N=PART DOES NOT PRINT ON SALES ORDER ECO NO: Y=PART PRINTS ON SALES ORDER W/O PRICE DATE OF LAST ECO: 00/00/00 P=PART PRINTS ON SALES ORDER WITH PRICE R DAYS O ITEM QTY PER YIELD EP DEFAULT OFF REFERENCE EFFECTIV OBSOLETE PART NUMBER DESCRIPTION P RV NO. ASSEMBLY FACTR UM SC QF QUANTITY SET SEQ DESIGNATOR DATE DATE ------------------ ------------------------------ - -- ---- --------- ----- -- -- -- -------- --- ---- ---------- -------- -------- 0403-501 HOUSING,TERM,MOLEX #22-01-3057 0 1 1.000 1.000 EA B YN 1.000 0 0 00/00/00 99/99/99 0403-505 TERMINAL,CRIMP,MOLEX#08560110 0 2 5.000 1.000 EA B YN 5.000 0 0 00/00/00 99/99/99 009025 ASSY, CBL, DE9F-DE9F, 3M 0 3 .500 1.000 EA B YN .500 0 0 08/22/00 99/99/99


Benthos, Inc.

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INSTRUCTIONS FOR THE INSTALLATION, OPERATION … 865A... · instructions for the installation, operation and maintenance of the benthos model 865 -a deep sea acoustic release transponder