Benthos 865-A Instructions For The Installation, Operation And Maintenance Download Page 35 | Manualshive

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Model 865-A Deep Sea Acoustic Release/Transponder

M-855-009

Benthos, Inc.

27

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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Summary of Contents for 865-A

Page 1: ...fffff INSTRUCTIONS FOR THE INSTALLATION OPERATION AND MAINTENANCE OF THE BENTHOS MODEL 865 A DEEP SEA ACOUSTIC RELEASE TRANSPONDER M 855 009 Rev B ...

Page 2: ......

Page 3: ...DEL 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 ...

Page 4: ......

Page 5: ...ncy 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 Weig...

Page 6: ...lt 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...

Page 7: ...eep Sea Acoustic Release Transponder M 855 009 Benthos Inc iii Application Note 500 001 Minimum Detectable Signal of Underwater Transponders Application Note 865 001 865 A Acoustic Release Definition of Load Ratings ...

Page 8: ...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 Pa...

Page 9: ...ds 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 manu...

Page 10: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc 2 Figure 1 1 ...

Page 11: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc 3 MOORING RELEASE DEEP SEA BENTHOS ARRAY INSTRUMENT PACKAGE BUOYANCY Typical Acoustic Release Application Figure 1 2 ...

Page 12: ... 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 removi...

Page 13: ...ic Release Transponder M 855 009 Benthos Inc 5 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 ...

Page 14: ...VER PLATE ASSEMBLY TUBE CONNECTOR FEMALE CHASSIS BATTERY PACK MALE CHASSIS END CAP BENTHOS BATTERY PACK HOUSING NO 2 PLATE TUBE CONNECTOR FEMALE TRANSDUCER NO 1 P C BOARD TRANSDUCER CONNECTOR MALE DELRIN BUSHING ELECTRONICS P C BOARD TRANSDUCER END ANODE Exploded View of 865 A Release Figure 2 1 ...

Page 15: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc 7 DS 7000 Acoustic Deck Set Figure 2 2 ...

Page 16: ...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 abo...

Page 17: ...ally transmit four pings with 200 millisecond spacing c After releasing unit will reply withfive 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 Essenti...

Page 18: ...e 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 ...

Page 19: ...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 re...

Page 20: ...ive 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 ...

Page 21: ... 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 rep...

Page 22: ...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 t...

Page 23: ...its 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 con...

Page 24: ...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 w...

Page 25: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc 17 Limit switches mounted on the end cap control the range of the pin movement see Figure 5 1 ...

Page 26: ...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 ...

Page 27: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc 19 Release Switching System Figure 5 1 ...

Page 28: ...ep Sea Acoustic Release Transponder M 855 009 Benthos Inc 20 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 ...

Page 29: ...r 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 amplifica...

Page 30: ...xecuted 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 H...

Page 31: ...es 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 e...

Page 32: ...perating 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 ca...

Page 33: ...en 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 N...

Page 34: ...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 t...

Page 35: ...nce 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...

Page 36: ...le 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 ...

Page 37: ... 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 greas...

Page 38: ...multaneously 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 aw...

Page 39: ...allation 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 t...

Page 40: ...using 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 ...

Page 41: ...g 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...

Page 42: ...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...

Page 43: ...he 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 TE...

Page 44: ...ULTIPLE 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 TRANSM...

Page 45: ...embly 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 ...

Page 46: ...ting 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 Fa...

Page 47: ...nd 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 dynam...

Page 48: ...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 BAL...

Page 49: ...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 0...

Page 50: ...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 ...

Page 51: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc ...

Page 52: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc ...

Page 53: ... 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 00...

Page 54: ...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 ...

Page 55: ...REW 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 99...

Page 56: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc ...

Page 57: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc ...

Page 58: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc ...

Page 59: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc ...

Page 60: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc ...

Page 61: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc ...

Page 62: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc ...

Page 63: ...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 DESICCAN...

Page 64: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc ...

Page 65: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc ...

Page 66: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc ...

Page 67: ...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...

Page 68: ...Model 865 A Deep Sea Acoustic Release Transponder M 855 009 Benthos Inc ...

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