SSB-2001B-2 - Ocean Technology Systems
Contents
1. 1 Conducta pool checkout and have more pool practice before using the system in open water Aquacom systems provide divers with good underwater com munications but do not change or eliminate potential diving hazards 2 Use any standard safe entry into the water but be aware of the additional equipment you are wearing The transceiver and cables should be positioned so they do not snag or hit against anything during entry Keep a copy of the above checklist handy for reference before entering the water 3 It is absolutely essential for all divers to be properly trained and equipped before responding to distress emergency and safety calls 4 Never begin an ascent while holding your breath air embolism may occur 3 3 POWER ACTIVATION The power is activated by simultaneous contact of the two activating water contact screws Fig 2 13 with water so the power will activate automatically when the transceiver is submerged The red indicator LED Fig 2 14 will illuminate when the transceiver power is on The unit s power remains activated for approximately 2 minutes out of water 3 4 RECEPTION When the power is activated the SSB 2001B 2 will automatically be in receive mode so you will hear all communications within range and on the same chan nel For optimal reception adjust the squelch sensitivity to the setting that best screens out background noises while still providing the reception range you require see Se2. 26 Under some conditions when your diving suit is directly between the transmitting source and your Aquacom transceiver a small zone of silence may be created that prevents reception This effect becomes greater at longer ranges Turning approxi mately 45 degrees in any direction eliminates this zone of silence Since most divers are in constant motion it is unlikely that anything more than a momentary signal loss would occur when acoustic energy is blocked by air inside a dry suit by gas bubbles within neoprene wet suit material or when both are present such as with a partially inflated dry suit NOTE Now that you have read this operator s manual and have become familiar with the system you are ready for your first communications dive with the Aquacom SSB 2001B 2 If you apply what you ve learned especially the proper positioning of the earphone and transducer and slow deliberate relaxed speech you can look forward to a new dimension in underwater experience SURFACE TRANSDUCER Figure 8 Communication through indirect and direct paths Note kelp scattering sound Without surface and bottom bounce the diver would lose communica tions 27 Undersea Systems International Inc dba Ocean Technology Systems LIMITED WARRANTY Ocean Technology Systems Aquacom SSB 2001B 2 is fully warranted against defects in materials and workmanship for a period of 1 year from the time of purcha
3. 3 6 After the Dives iis sists E nE nE E aan 18 3 7 Helptull Hintsanen E nia cmsavewen 18 3 8 Examples of Underwater Communication c cccesceeeceees 19 3 8 1 Calls Between Surface Subs or Divers 00 ccceeeee 19 3 8 2 Calls Between Divers and Surface Subs or Bells 19 Section 4 Batteries and Charging 00 0 0 ccc ccccecceeeeeseeceneeceteeeseeeneeenes 20 4 1 Battery Installation or Replacement 21 4 2 Battery Charging cccscesccescssecsaeccaesvessecsctascutereaneveaadeoetceiaceaceverivess 21 4 2 1 Charging Through the Transceiver 21 4 2 2 Charging the Battery Directly sieis iscissi 22 Section 5 Maintemance sisisi ne raees E Ea atis 23 Sil General Maintenant c ccssyesiessasectetanssesesrmaacieares 23 52 P rodic Maimtemance iis ci is ofthe seit Baa 23 Section 6 The Basics of Sound in Water 00 0 0 eee eeeeeseeeeeeeeeees 24 O l Background i 6scsisiishciiesnindlaniiiviadalninawiaie ain 24 6 2 Factors That Affect Sound in Water cccceceseesseceeeeeneeeeeees 24 6 2 1 Distanc iesist is i REE ates 24 6 2 2 Water DENS UY vi iccsssccse ceases iinn aei i R 24 0 2 3 Water Temperature ci vaste nisi a R 24 6 2 4 Background NOiSe ccecesccescesseeseeeeeeeceseeseeeseeesecaeeeaes 26 6 2 5 ZonesOf SIENTE iesise NA ee 26 Limited Warranty soinnin a NE ERORAR 28 Tables Table 1 Compatible Earphone Microphone Assemblies 00 9 Table 2 Battery Chargers Av
4. While the unit is still open you can make other adjustments if necessary see Sections 3 1 2 3 through 3 1 2 5 When finished rejoin and reseal the two housings as instructed in Section 3 1 1 3 1 2 3 Audio Volume Adjustments The receive and side audio volumes are adjusted independently After separating the upper and lower housings Section 3 1 1 to access the bottom of the upper housing use the supplied AD 1 adjustment tool to rotate the two turn volume controls Sections 2 3 4 and 2 3 5 Rotate the controls clockwise to increase volume and counterclockwise to decrease it With some helmets or full face masks you may experience acoustic feedback while transmitting in that case a lower side audio volume setting must be used Because the housings must be separated to access the audio volume controls these adjustments must be made on the surface not underwater 3 1 2 4 VOX Sensitivity Adjustment The VOX sensitivity should be set for the diver s voice for optimal VOX response If the VOX is not adjusted properly either false transmission due to noise if too sensitive or an inability to transmit if not sensitive enough will occur To adjust the VOX sensitivity use the supplied AD 1 adjstument tool to rotate the VOX control Section 2 3 2 clockwise to increase VOX sensitivity or counter clockwise to decrease it See Figure 4 for an illustration of the effect of adjustment on VOX sensitivity Graph shows VOX setting at 1 tur
5. animal or environmental waves or rain can interfere with good communications Such background noise can be suppressed through the use of the squelch function and thermoclines 6 2 5 Zones of Silence Large natural or man made objects can block acoustical transmission under certain conditions in much the same way that a rock blocks a fast moving current of water Close to the backside of the rock in this example the current is absent and the water seems still A short distance away the current is flowing again Figure 7 Similarly acoustic energy in the water can be blocked if the transmitting source is WATER CURRENT DEAD ZONE Figure 7 Water current dead zone close to a large object On the backside of the blocking object a zone of silence is formed in which reception of the transmitted signal is not possible Divers can reduce zones of silence by moving away from around or above the blocking object until communication is reestablished Figure 8 Most single sideband signals are efficient enough to permit communications around blocking objects Reception is made mainly through surface and bottom reflections Man made noise may be present underwater in busy harbors shipping lanes and many coastal locations particularly at lower frequencies The outstanding characteristic of this coastal ambient noise is its great variability from place to place in the same harbor and from time to time at the same place
6. 1 to separate the upper and lower housings and to reseal them afterward The SSB 2001B 2 provides a switch for channel selection in addition to manual adjustment controls for receiver and side audio listening volumes and squelch and VOX sensitivities Fig 3 Because the unit is opened to access these controls adjustments must be made on the surface not while diving An AD 1 steel tipped adjustment tool is provided with the SSB 2001B 2 Switching between voice activation VOX and push to talk PTT transmission modes is done electronically with PTT button push sequences and thus can be done while diving 2 3 1 MANUAL PUSH TO TALK PTT SWITCH The PTT button on the earphone microphone EM assembly sold separately is used to enter transmission mode manually and to toggle between voice activation VOX and manual PTT transmission modes Because there are many different configurations of diving masks the location of the PTT button varies among EM assemblies See Sections 3 1 2 1 VOX PTT Mode Selection and 3 5 Transmission for instructions for use of the PTT and Section 2 4 2 for information about available earphone microphone assemblies Key 1 2 3 4 5 6 7 Hi Use connector for EM assembly Strike Belt clip O ring to seal housing Latch Lower housing SP 8 battery holder 8 Battery snap connector 9 Upper housing 10 Gripper ring 11 O ring to seal transducer connection 12 Transducer
7. 2 4 3 Designate one diver as lead communication diver so that more than one diver will not be trying to answer questions Brief the divers that after entering the water especially if making a jump they should make eye contact with the dive supervisor if he has a surface station and establish communications If a diver feels a thermocline he should report the depth to other divers and the dive supervisor if he has a surface station Topside should adjust the transducer accordingly Do initial underwater training in a controlled area e g a swimming pool During initial training if you have a surface transceiver talk to one diver at a time until he establishes clear communications Then talk to the other After the divers are comfortable have them talk to each other If working in a pool make sure the pool does not have a bad or noisy pump This would create many tiny bubbles that would reduce the communication range If after a few minutes you see tiny bubbles like carbonation gather ing on your hands or dive gear move to a new location or fix the pump If the pump is noisy secure it during the test Surface units within range can communicate in open water or harbors avoiding the sometimes crowded and less private airways Submarine or bell crews can similarly communicate with one another or with surface units We recommend the use of standard radio telephone procedures in all communications EXAMPLES OF UNDERWATER COMMUNICAT
8. Note Do not press on the microphone diaphragm doing so may cause damage 2 5 COMPATIBLE SURFACE DIVER TRANSCEIVERS The SSB 2001B 2 transmits to and receives from any transceiver that is within range and set to the same frequency The following are compatible transceivers manufactured by OTS Diver units SSB 2010 SSB 1001B Buddy Phone e g XT 100 OTS BUD MKIH BUD MTS BUD SCU BUD DSI BUD RX 100 MAG 1003D MAG 1004HS Surface units STX 101 STX 101M STX 101SB 25 kHz version SP 100 SP 100D MAG 1001S a version with at least one compatible frequency must be requested MAG 1003 PS Diving bell unit BELL 200 U S Patent no 7 170 822 EU patent nos 000458351 0001 0002 0003 0004 0005 0006 11 SECTION 3 OPERATION INSTRUCTIONS Here are provided instructions for operation of the Aquacom SSB 2001B 2 including adjustments setup before a dive use during the dive and what to do after the dive is over Information on batteries including charging instructions is found in Section 4 Instructions for proper maintenance of the SSB 2001B 2 are in Section 5 With more information to help you understand how to set up and use your equipment for the best possible communications in your diving situation Section 6 explains how communication is accomplished underwater and discusses the factors that affect it 3 1 ADJUSTMENTS AND SETTINGS The SSB 2001B 2 offers various settings to make best use of its features inclu
9. back of the boat and the microphone became wet there would be no problem but if the FFM with element dropped more than 8 to 10 feet into the water the change in pressure probably would damage the microphone element In tests we have taken off the FFM at 30 feet and replaced it still at 30 feet without any problem but if one were to take off the FFM at 30 feet and drop down to 40 feet the pressure difference may damage the microphone 2 4 3 2 Super Mic Depth Master The Super Mic offers patented technology that overcomes a limitation of other microphones It can be used at any depth and unlike the Hot Mic or many other microphones can withstand changes in depth while submerged so it will not be damaged if the diver needs to descend with the mask flooded e g on removal and stowage of the full face mask when switching to another air system It is a ceramic microphone with a compact lightweight design and noise cancelling properties reducing background noises for clearer communications When only the highest quality of intelligibility is required the Hot Mic is the preferred choice but the Super Mic s intelligibility is sufficient for most diving situations To assure clear communications when using the Super Mic it should be no more than 1 4 inch from the corner of the diver s mouth After each dive clean the Super Mic by rinsing it with freshwater and drying it with a clean soft towel No other maintenance is required
10. during the dive and may damage the battery 4 2 BATTERY CHARGING The RB 11 NiMH battery pack can be recharged using the chargers listed in Table 2 Never attempt to recharge alkaline batteries IMPORTANT NOTE If RB 11 rechargeable batteries were supplied with your transceiver recharge the batteries before first use Before operating the transceiver allow a few minutes after charging the batteries for any gasses caused by charging to dissipate 4 2 1 CHARGING THROUGH THE TRANSCEIVER With an RCS 15 charger or an RCS 16 charger with the battery snap adapter removed it is not necessary to open the transceiver to charge the RB 11 Follow these simple instructions 1 Remove and set aside the transducer Section 2 10 1 21 2 RCS 15 Follow the instructions provided with the RCS 15 charger The RCS 15 monitors the battery s voltage level to charge it only as necessary 3 Replace the transducer ensure the o ring is in place and in good order 4 2 2 CHARGING THE BATTERY DIRECTLY e RCS 16 charger with the supplied battery connection adapter Follow the instructions provided with the RCS 16 charger The RCS 16 monitors the battery s voltage level to charge it only as necessary e RCL 7A multi battery charging station Follow the operating instructions in the RCL 7A user s manual 22 SECTION 5 MAINTENANCE 5 1 GENERAL MAINTENANCE The SSB 2001B 2 is virtually maintenance free and should give you many years of serv
11. one to charge then obtain the RCS 16 smart charger with power cords available for any region of the world which provides the option of charging the RB 11 battery pack either outside or inside the SSB 2001B 2 transceiver As another alternative the RCL 7A multi battery charging station can charge up to six RB 11 batteries and a surface transceiver battery simultaneously The RCS 15 charger can charge only a battery pack that is inside the transceiver and only one pack at a time Note The RB 11 rechargeable battery you receive may have upgraded specifications from what is stated in this manual Due to advancing battery technologies we continually upgrade our batteries and chargers Contact OTS or your OTS dealer to find out the latest available battery and charger Table 2 Battery Chargers Available for the SSB 2001B 2 Charging Model No Part No Region Specifications Method RCS 15 910376 xxx 90 264 VAC 50 60 Hz input Via transceiver 24 VDC output RCS 16 900289 001 Any 90 264 VAC 50 60 Hz input Via transceiver 24 VDC output Battery directly 90 264 VAC 50 60 Hz input RCL 7A 900307 000 24 VDC diver units and 16 Battery directly VDC surface units output 20 4 1 BATTERY INSTALLATION OR REPLACEMENT One should never try to recharge alkaline batteries they should be discarded and replaced when depleted If you use an RB 11 NiMH rechargeable battery pack after a long life of service it may no longer adequately hol
12. the Mantis FFM It consists of two earphones two earphone holders a Hot Mic a Hi Use connector and a PTT button 2 4 2 18 EMMT 2SM 911060 103 This assembly is designed to be installed into the Mantis FFM It consists of two earphone earphone holders a Super Mic a Hi Use connector and a PTT button 2 4 2 19 EM OTS 2 910369 000 This assembly is designed to be installed into the Guardian FFM It consists of two earphone earphone holders a Hot Mic a Hi Use connector and a PTT button 2 4 2 20 EM OTS 2SM 910379 000 This assembly is designed to be installed into the Guardian FFM It consists of two earphone earphone holders a Super Mic a Hi Use connector and a PTT button 2 43 MICROPHONES 2 4 3 1 ME 16R Hot Mic 912086 000 The ME 16R Hot Mic isa 150 ohm water resistant microphone element It is a state of the art dynamic microphone element designed to give you long trouble free use and the highest intelligibility possible Although the Hot Mic is trouble free it should be maintained Rinse it with 10 freshwater after use to get all dirt debris or salt water from the grill Dry it with a clean soft towel If the element ever needs to be replaced it is easily removed by unscrewing the two small screws located on its base Getting the microphone wet does not harm it However the microphone element can only withstand an 8 to 10 foot depth pressure differential If you removed your diving FFM at the
13. two chan nels for transmission and reception 32 768 kHz USB Channel 1 and 25 kHz USB Channel 7 32 768 kHz USB is the more efficient channel with the supplied TA 5 transducer Fig 2 12 but 25 kHz USB is more efficient if the optional TA 4 transducer is used instead See Section 3 1 2 2 for channel selection instructions 2 3 4 RECEIVE VOLUME A manual control Fig 3 2 is used to adjust the listening volume of communication signals received from other transmitters Rotation clockwise increases the volume and counterclockwise decreases it It is a two turn control rotating in either direction a total of two times before it stops 2 3 5 SIDE AUDIO VOLUME Side audio also known as sidetone is the diver s transmitted signal heard through his own earphones Side audio is useful for the diver to verify he is actually transmitting Volume is changed by rotation of the side audio volume control Fig 3 5 clockwise to increase and counterclockwise to decrease It is a two turn control fully rotating twice before stopping 2 3 6 SQUELCH As explained in Section 2 2 the squelch helps to limit the background noise heard by the diver The proper setting depends on the specific requirements of the dive Squelch adjustment is accomplished via a manual control Fig 3 3 and is described in Section 3 1 2 5 It is a two turn control meaning it will rotate in either direction a total of two times before it stops 2 4 COMPONENTS AND
14. 13 Activating water contact screws 14 Power charging indicator LED 1 AQUACOM SINGLE SIDEBAND ACOUSTIC PHONE PROFESSIONAL SSB 2001 U S PATENT Ho 5 555 533 O o0 ee OCEAN TECHNOLOGY serine 8 Figure 2 Components of the SSB 2001B 2 1107 e le Key 1 Channel selection switch 2 Receive volume control 3 Squelch sensitivity control 4 VOX sensitivity control 5 Side audio volume control Figure 3 Adjustment controls 6 2 3 2 VOICE OPERATED TRANSMITTER VOX VOX operation pro vides hands free communications When the SSB 2001B 2 is in VOX transmission mode simply talk for the unit to transmit automatically The diver can adjust the VOX sensitivity with a control Fig 3 4 to customize the VOX response to his voice and the level of ambient noise It is a two turn control meaning it will rotate in either direction a total of two times before it stops Section 3 1 2 1 provides instructions for switching between VOX and PTT modes and Section 3 1 2 4 describes how to adjust the VOX sensitivity 2 3 3 CHANNELS FREQUENCIES The SSB 2001B 2 provides
15. ACCESSORIES 2 4 1 TRANSDUCER The transducer provides the antenna for the trans ceiver to transmit and receive messages It is mounted on the top of the upper housing Fig 2 12 and is removable via a connector A large gripper ring Fig 2 10 provides a means to remove and reinstall the transducer easily by holding the ring for stability while unscrewing the transducer Installed onto the standard Aquacom SSB 2001B 2 is a TA 5 transducer which operates more efficiently and therefore provides greater output power at Channel 1 32 768 khz USB than at Channel 7 25 kHz USB If you require greater output power with Channel 7 25 kHz USB than with Channel 1 obtain an SSB 2001 B 2 with a TA 4 transducer available as a special order from Ocean Technology Systems or through your local OTS dealer 7 An o ring is located inside the transducer connector Fig 2 11 to maintain a watertight seal When reinstalling the transducer after having removed it from the upper housing be sure to replace the o ring to protect the connector pins from water entry and subsequent corrosion 2 4 2 EARPHONE MICROPHONE EM ASSEMBLIES We offer our standard microphones integrated into EM assemblies designed to fit the commu nication port of full face masks FFMs produced by various manufacturers Table 1 is a compatibility chart of some of the standard EM assemblies available for use with Aquacom diver transceivers Note Ifyou have a diving he
16. EMD 2 1060 067 EMD 2SM 1060 101 EM KMS 48 O 0280 000 SW er lt lt EM KMS 48SM 910280 002 EMMT 1 911060 090 EMMT 1SM 1060 102 EMMT 2 1060 091 EMMT 2SM 911060 103 EMO 2 900096 686 EMS 2 911060 017 Standard ear mi ScubaPro FFM Standard ear mi Guardian FFM Standard ear mic Guardian FFM installed into a ScubaPro FFM It consists of two earphones with holders a Hot Mic a PTT button and a Hi Use connector EM OTS 2 910369 000 EM OTS 2SM 910379 000 Part Number Tipe 911060 098 Standard ear mic 910274 000 SW ear mic 910279 001 SW ear mic 91060 026 Standard car mic 900332 001 Standard car mie 910281 001 SW ear mic 911060 009 Standard car mie 91060 100 Standard car mic _900282 000 Standard car mic 911060 101 Standard ear mic 91060 090 Standard car mic 91060 091 Standard car mic 91060 103 Standard car mic 900096 686 Standard car mic 91060 017 Standard car mic 910369 000 Standard car mic 910379 000 Standard car mic 2 4 2 9 LAR V Adapter 900282 000 This adapter is placed between the in halation hose and LAR V bite mouth DSV t bit assembly It is designed to allow basic words to be transmitted without the need for a full or half mask It consists of one earphone an ME 500 microphone a Hi Use connector and a PTT button 2 4 2 10 EMD 2 911060 067 The EMD 2 EM assembly is des
17. EMMT 1 911060 090 eeceeteeeeteeeeteereneees 10 2 4 2 16 EMMT 1SM 911060 102 eeeeeeeeeeteeeeneeee 10 2 4 2 17 EMMT 2 911060 091 ec eeceeeteeeeteeeeeereneees 10 2 4 2 18 EMMT 2SM 911060 103 eeeeceseeeteeeeneees 10 2 4 2 19 EM OTS 2 910369 000 ecceeceeeeeetseeetseeeeees 10 2 4 2 20 EM OTS 2SM 910379 000 ecccceseseteteeteneees 10 ZA J Miho PhO sss siris3 tis tstsass ecscessast eastioteiestvaiesetae eres 10 2 4 3 1 ME 16R Hot Mic 912086 000 cceee 10 2 4 3 2 Super Mic Depth Master cece 11 2 5 Compatible Surface Diver Transceivers sseeeeceeeeeeeeeee 11 Section 3 Operation Instructions 20 00 00 cc cecceeseceeeeceeeceneeceeeeseaeeeneeees 12 3 1 Adjustments and Settings eceeeseeeeseeceeeeeeeeeseeeereeeeneeeeeees 12 3 1 1 Accessing the Internal Controls sissies 12 3 1 2 Making Adjustments and Settings 13 3 1 2 1 WOX PTT Mode Selection ee eeeeeneenees 13 3 1 2 2 Channel Selection ccs nidaincscnineies 13 3 1 2 3 Audio Volume Adjustments cceeeeeeeees 13 3 1 2 4 VOX Sensitivity Adjustment 0 eee 13 3 1 2 5 Squelch Sensitivity Adjustment ce 14 3 2 Setup Before a Divesisciciseiciescieseiaeniieccdcincnwaies 14 3 3 Power ACtivati Ont ge s ciessesstcvsscentondieecegssoststeatvossd EE 17 3A ReCeptOn ws aise ieisik ad avian iadiniiiiviadalainsiaara lanes 17 3 5 DTATISMMSSION sscossrssesussusehsptes eeietvediene ease treater meee ne 18
18. ION 3 8 1 CALLS BETWEEN SURFACE SUBS OR DIVERS DIVERA Red Diver this is Blue Diver do you see the wreck yet Over DIVER B Blue Diver this is Red Diver yes I see the wreck it s ten yards to your right Out 3 8 2 CALLS BETWEEN DIVERS AND SURFACE SUBS OR BELLS DIVERA Topside this is Blue Diver how far am I from the dive boats Over SURFACE Blue Diver this is Topside I see your bubbles 50 feet off my port bow Out DIVERA Sub this is Blue Diver how long before I must lock in Over SUB Blue Diver this is Sub We oe you in seven minutes Out SECTION 4 BATTERIES AND CHARGING The SSB 2001B 2 can be powered using eight standard AA size alkaline batteries for which we supply an SP 8 battery holder inside the battery compartment of the transceiver s lower housing A nickel metal hydride NiMH rechargeable battery pack the RB 11 and chargers see Table 2 are available as an option and can be purchased separately We also offer a multi battery charger the RCL 7A with the ability to charge multiple batteries simultaneously as well as a surface unit s battery The RB 11 NiMH battery pack delivers greater capacity than nickel cadmium NiCad batteries and does not suffer from memory effect as do NiCad batteries Refer to Table 2 for a list of available battery chargers and their features If you intend to purchase any extra RB 11 battery packs to replace the battery without having to wait for
19. OL TECHNOLOGY Sy Aquacom SSB 2001B 2 2 Channel Single Sideband Acoustic Transceiver i AQUACOM SINGLE SIDEBAND ACOUSTIC PHONE PROFESSIONAL SSB 2001 Technology in Depth NOTICE This manual and the information contained herein are provided for use as a main tenance and operation guide No license or rights to manufacture produce and or sell either the manual or articles described herein are given Undersea Systems International Inc dba Ocean Technology Systems reserves the right to change specifications without notice We recommend that all users read and fully understand this manual before using the Aquacom SSB 2001B 2 All statements technical information and recommendations herein are based on tests we believe to be reliable but the accuracy or completeness thereof is not guar anteed and the following is made in lieu of all warranties expressed or implied including the implied warranties of merchantability and fitness for purpose Seller s and Manufacturer s only obligation shall be to replace such quantity of the product proved to be defective Before using the user shall determine the suitability of the product for intended use and the user assumes all risk and liability whatsoever in co
20. OUND IN WATER There are many factors that affect the propagation of sound in water All of these factors vary depending upon location depth and time of day The net result is that communication in water can be affected by local conditions and the kind and depth of dive being conducted Fluctuations in range and intelligibility are to be expected 6 2 1 Distance The sound intensity from a source varies inversely with the square of the distance from the source This sort of variation is referred to as spherical spreading Other factors also influence the variation of sound intensity with distance As the sound passes through the water some of the energy is absorbed and converted to heat attenuation and some of the energy is scattered by fish pilings seaweed bubbles etc diffraction In addition both the surface and bottom may affect the sound intensity by reflecting sound back into the water The sound reflected by the surface and bottom may raise the intensity above normal levels reinforcement or may introduce destructive interference The bending of the sound waves by temperature variations also has a great effect on the sound intensity at points remote from the source If the source of the sound is near the surface there is some point beyond which sound is not received from the source This point is said to be in a shadow zone The distance from the source to the shadow zone is determined by the rate of change of temperature with dept
21. Using the AD 1 adjustment tool turn the squelch sensitivity of both trans ceivers all the way down counterclockwise Place both units into a sink or pail of water with enough water to completely cover the transducers or place the transducers within four feet of each other out of water Transmit back and forth between the transceivers to verify that both transmit and receive properly Note The transceiver will not sound as clear during these tests as it will in open water 8 Don your dive equipment including the SSB 2001B 2 making sure that the cables are dressed out so as not to snag Inspect your diver partner s gear for the same You can use the following checklist as a final check before the dive Pre Dive Checklist 16 Fresh alkaline batteries or a fully charged NiMH battery pack installed O rings lightly greased and in place Clamps secure no pinched wires Diver unit in place transducer free of diving equipment Earphone s in holder s and adjusted Hi Use connectors properly mated and pins lightly greased Diver is dressed out such that the cables will not snag and the transducer is not covered by any type of dive equipment 8 In water surface check a Recheck the location of the earphone b Submerge the transducer and establish communication c Look your dive partner over to ensure his equipment is properly adjusted and the wires are dressed so as not to snag SO oi Be Important Safety Notes
22. ailable for the SSB 2001B 2 0 0 20 Illustrations Figure 1 SSB 2001B 2 with typical earphone microphone assembly 1 Figure 2 Components of the SSB 2001 B 2 wo eeeeseeeeeeeteneeeeeeeeeeeeees 6 Figure 3 Adjustment COmtol sss scc ssvrssseohencesssotspuavejepseesvelpessiotessonazacensee 6 Figure 4 Effect of VOX sensitivity adjustment cc eceseeeeeeeeeneees 14 Figure 5 Effect of squelch sensitivity adjustment cseceeeeees 15 Figure 6 Thermoclines affect the ultrasonic signal 25 Figure 7 Water current dead ZONC ceseeeeesesseeeeeeeeeeeeerceseneeereeeenaees 26 Figure 8 Communication through indirect and direct paths 27 1 SECTION 1 INTRODUCTION 1 1 GENERAL Congratulations You have just purchased one of the finest state of the art un derwater communication systems available The Aquacom SSB 2001B 2 is an ultrasonic single sideband transceiver designed to allow through water voice communications among divers and the surface It employs digital signal processing DSP techniques that ensure the highest quality intelligibility possible Standard features include automatic electronic switching between voice activation VOX and push to talk PTT modes allowing the diver total function control underwater separate volume controls for receive and side audio levels two channels a heavy duty housing covertibility to a portable surface station and more In all you will find that
23. bending of the sound waves by refraction effects can serve as reflecting surfaces The velocity ofsound transmission changes only about one percent fora temperature change of 10 F However the resultant bending of the sound path has great effect over a distance of several hundred yards If the temperature of the water decreases with depth at the rate of 1 F for each 30 feet starting at the surface most of the sound energy originating at the source near the surface will travel along paths that are bent rather sharply downward Therefore the sound energy may not reach a shallow detector positioned 1000 yards from the 25 source but may reach a deeper detector position further from the source Greater temperature variations can cause these paths to bend more sharply The best method to deal with thermoclines is to bring the divers and or transducers as close to each other as possible If a diver enters a thermocline he should report it to everyone surface and divers so they know the depth of the thermocline All divers should stay within that depth and the surface station should try to position the surface transducer below or above whichever is the case Figure 6 6 2 4 Background Noise Marine organisms play an importantrole in underwater acoustics They are important primarily because of the effect they have on sound transmission but they often serve as sources of underwater noise as well High background noise whether man made
24. ctions 2 2 and 2 3 6 for more information about the squelch function and Section 3 1 2 5 for squelch adjustment instructions 17 When receiving a transmission do the following e Relax e Concentrate on hearing e Try different earphone positions until the best one is found e Minimize exhalation bubble noise but do not hold your breath Most divers find that an inhalation cycle is the best time to receive a message While off gassing the bubble noise makes hearing difficult If you experience acoustic feedback while transmitting use a lower side audio volume setting see Section 3 1 2 3 3 5 TRANSMISSION When the SSB 2001B 2 is in PTT transmission mode simply depress the PTT but ton to transmit The system automatically returns to the receive mode upon release of the PTT button If the unit is in VOX transmission mode see Section 2 3 2 pressing the PTT button to transmit overrides the VOX function To transmit in VOX mode all you have to do is speak for the transceiver to enter transmission mode automatically However as explained in Section 3 1 2 4 the VOX sensitivity should be calibrated to the diver s voice to assure that the unit enters transmission mode whenever and only when the diver speaks As discussed in Section 3 1 2 1 VOX PTT Mode Selection when the unit is first turned on the SSB 2001B 2 is in PTT transmission mode To change back and forth between VOX and PTT modes press the PTT button twice in o
25. cycle RB 11 nickel metal hydride battery pack option al 6 hours Eight AA alkaline cells or optional RB 11 nickel metal hydride rechargeable battery pack Piezoelectric type Ceramic type Injection molded high impact glass filled ABS plastic 400 ft Height 7 60 width 3 55 depth 1 80 0 C to 60 C 32 F to 140 F 10 C to 60 C 14 F to 140 F Red flashing LED on housing and beep in earphone Hi Use RCS 15 and RCS 16 90 264 VAC 50 60 Hz input 14 7 VDC output charging current 800 mA RCL 7A 90 264 VAC 50 60 Hz input 24 VDC diver units and 16 VDC surface units output 1 PEP peak envelope power 2 These standard frequencies are also used by the STX 101M and the SSB 1001B 3 32 768 kHz USB is the more efficient channel with the supplied TA 5 transducer but 25 kHz USB is more efficient if the optional TA 4 transducer is used see Section 2 4 1 1 3 WHEN YOU RECEIVE YOUR SHIPMENT Upon arrival of your equipment inspect the shipping container for dents gouges or any other evidence of rough handling When you remove your Aquacom SSB 2001B 2 transceiver from the shipping container and the protective case visually inspect it for damage or other problems Ifany damage is evident immediately file a claim with the carrier Forward a copy of the damage claim to Ocean Technology Systems Santa Ana CA We will then make arrangements for repair or replacement Also inspect t
26. d a charge and may need to be replaced Whether you need to install new or replace old batteries follow these steps refer to Figure 2 for the locations of the transceiver components 1 Place the SSB 2001B 2 transceiver onto a stable surface Pull up on the latches Fig 2 5 simultaneously 3 Separate the upper and lower housings while being careful not to damage the wires or o ring 4 a Alkaline batteries Load fresh alkaline AA batteries per the directions stated on the SP 8 battery holder b RB 11 rechargeable battery The RB 11 is used instead of the SP 8 battery holder which must be removed from the lower housing If you are replacing a currently installed battery disconnect the battery connector Remove the old battery from the lower housing Install the charged battery by inserting it into the transceiver s lower housing and connecting the battery connector 6 Verify that the o ring Fig 2 4 is in place lightly lubricated with a quality pure silicone grease and free of debris 7 Carefully mate the upper and lower housings together Ensure that they line up evenly and that nothing is on the o ring or mating surface 8 Connect the latches from the lower housing to the upper strikes Fig 2 2 Pull down the latches simultaneously until fully down 9 Look on all sides of the transceiver to verify the upper and lower assemblies appear flush with no high spots Note If the housing is not completely sealed water will enter
27. ding the capability to make manual adjustments to define the sensitivities of the VOX and squelch systems Because no standards for design of full face masks have been established virtually all full face masks have different internal designs Some designs have little room for microphone installation which makes it necessary to have a more sensitive setting Overall the ability to make these adjustments offers the user more options to customize the transceiver for optimal communications The following instructions explain how to make the adjustments and settings neces sary for effective operation of the SSB 2001B 2 Refer to Section 2 3 Functions and Controls for the locations and descriptions of the controls 3 1 1 ACCESSING THE INTERNAL CONTROLS Most of the adjustments and settings described in this section require the upper and lower housings of the SSB 2001B 2 transceiver to be separated To open the unit do the following 1 Place the transceiver so it stands on or against a stable surface 2 Release the two latches Fig 2 5 securing the upper and lower housings 6 and 9 3 Separate the two housings To rejoin the two housings and seal the unit do the following 1 Ensure the large o ring Fig 2 4 rests evenly and securely inside the groove along the bottom of the upper housing 9 2 Connect the battery snap connector Fig 2 8 to the RB 11 battery or SP 8 battery holder 7 3 Being careful not to pinch
28. h the depth of the source and the depth at which the reception is made Figure 6 6 2 2 Water Density In addition to these factors water density is also important Because the density of sea water varies with the temperature the salt content and the static pressure the effect on sound of each of these three factors is usually considered separately 6 2 3 Water Temperature Variations in water temperature affect sound 24 OIS AAA AAJ AAI AAAA AAA AAKAAAS NAKA j D LA YL AAAA AAJ XN ca Se SS a ia S a N gt lt lt ean a No r a Cr gt THERMOCLINE Figure 6 Thermoclines affect the ultrasonic signal Divers must report thermocline depth s so the surface transceiver and or other divers can be as close to the same depth as possible transmission most In some areas of the ocean the temperature changes at a fixed rate over large ranges of depth If the temperature increases with depth at a fixed rate the velocity of sound increases at a rate constant with depth and sound waves are refracted toward the surface If however the temperature decreases with the depth as is frequently the case the velocity of sound decreases with depth and the waves of sound are bent downward There are also areas in the sea where at some depth temperature changes rapidly over a small depth range Such a layer is referred to as a thermocline or thermal layer Such layers in addition to producing rather sharp
29. he contents of the protective case to verify that all items have been included See Section 2 1 for a list of items supplied with the SSB 2001B 2 Note Although the Aquacom SSB 2001B 2 is rugged in design exercise care to ensure that problems are not caused by improper handling Store the unit in a safe secure area after unpacking it SECTION 2 EQUIPMENT DESCRIPTION 2 1 GENERAL DESCRIPTION The following items are provided with the Aquacom SSB 2001B 2 e SP 8 battery holder for eight AA alkaline batteries p n H024 e AD 1 steel tipped adjustment tool p n P088 e User s manual doc no 506087 000 e Warranty card with the transceiver s serial number e Large label of OTS logo p n 504013 002 e OTS designed gear bag for storage and transport nylon with shoulder strap p n 134153 000 The SSB 2001B 2 is housed in a watertight enclosure constructed of high impact glass reinforced ABS plastic that will not corrode if scratched and is designed for easy belt or tank mounting The housing is divided into two major parts the upper electronics and lower battery sections An o ring between the sections serves to maintain the housing s watertight integrity Stainless steel latches maintain a constant pressure that preloads the o ring and prevents leakage within specified depths Note The upper and lower housings are a matched set do not mix them up with those of other transceivers The cable with a Hi Use connector all
30. ice Follow the instructions in Section 3 6 After the Dive for a general maintenance procedure after each use 5 2 PERIODIC MAINTENANCE Perform the following service periodically on the SSB 2001B 2 1 Clean and lightly grease the orings in the transducer Fig 2 11 and between the upper and lower housings 4 Check the o rings for cracks or damage If there is any evidence replace the o ring Note Do not grease the trans ducer 2 Keep the transducer clean Periodically wipe it clean with alcohol around the outside not underneath or on the connector 3 Verify that the screws securing the battery wire Fig 2 8 are tight 4 Verify that the battery connector and wire are undamaged clean and otherwise in good order 23 SECTION 6 THE BASICS OF SOUND IN WATER 6 1 BACKGROUND If a diaphragm submerged in water is caused to vibrate by electrical means it has mechanical energy of motion that is communicated to the water Ifanother diaphragm is submerged in the water near the vibrating diaphragm the acoustic energy in the water will excite mechanical vibrations in the second diaphragm These vibrations may be detected by electrical means to complete a flow of mechanical energy from the first diaphragm to the second The first diaphragm is called the source or transducer and the second is called a receiver or hydrophone In Aquacom systems the transducer and hydrophone are one and the same 6 2 FACTORS THAT AFFECT S
31. igned to be installed into the M 48 SuperMask FFM It consists of two earphones earphone holders a Hot Mic a Hi Use connector and a PTT button 9 2 4 2 11 EMD 2SM 911060 101 The EMD 2SM EM assembly is designed to be installed into the M 48 SuperMask FFM It consists of two earphone earphone holders a Super Mic a Hi Use connector and a PTT button 2 4 2 12 EMDG 2 911060 076 This assembly is designed to be installed into the Drager Panorama Nova Dive Mask It consists of two earphones earphone holders an ME 500 microphone a Hi Use connector and a PTT button 2 4 2 13 EMH1 1 900332 000 This assembly is designed to be installed into the HM 1 silicone half mask It consists of one earphone a Hot Mic a Hi Use connector and a PTT button 2 4 2 14 EMH1 1SM 900332 001 The EMH1 1SM EM assembly is designed to be installed into the HM 1 silicone half mask It consists of one earphone a Super Mic a Hi Use connector and a PTT button 2 4 2 15 EMMT 1 911060 090 The EMMT 1 EM assembly is designed to be installed into the Mantis FFM It consists of one earphone an earphone holder a Hot Mic a Hi Use connector and a PTT button 2 4 2 16 EMMT 1SM 911060 102 The EMMT 1SM EM assembly is designed to be installed into the Mantis FFM It consists of one earphone earphone holder a Super Mic a Hi Use connector and a PTT button 2 4 2 17 EMMT 2 911060 091 This assembly is designed to be installed into
32. lmet or FFM that is not on the compatibility chart contact Ocean Technology Systems or your local OTS dealer for availability or for information on custom EM assemblies The following are full descriptions of each of the EM assemblies listed in Table 1 2 4 2 1 EMA 2 911060 001 The EMA 2 EM assembly is designed for all Divator MKII AGA full face masks FFMs It has two ceramic earphones with holders an ME 16R Hot Mic a Hi Use connector and a push to talk PTT but ton The assembly is installed into the Divator MKII FFM communication port 2 4 2 2 EMA 2SM 911060 098 The EMA 2SM EM assembly is designed to be installed into all Divator MKII AGA FFMs It consists of two ceramic earphones with holders a Super Mic a Hi Use connector and a PTT button The assembly is installed into the Divator MKII FFM communication port 2 4 2 3 EMX 2 911060 008 The EMX 2 EM assembly is designed for the EXO 26 original FFM It consists of two dynamic earphones an ME 16R Hot Mic a Hi Use connector and a PTT button 2 4 2 4 EMX 2B 911060 026 The EMX 2B EM assembly is designed for the EXO 26 standard full face mask It is similar to the EMX 2 but fits the balanced regulator version of the EXO 26 with an oral nasal cavity 2 4 2 5 EMO 2 900096 686 The EMO 2 EM assembly is designed to be in stalled into the Ocean Reef NIRA Neptune FFM It has two earphones with holders a Hot Mic a Hi Use connector and a PTT but
33. lowing equipment check a Locate the two activating water contact screws Fig 2 13 on top of the upper housing between the transducer gripper ring and the red indicator LED Moisten your fingers and place them across the screws to activate the unit hold onto the screws for about 10 seconds The unit will stay on for approximately 2 minutes out of water The red LED will illuminate while power is on While the unit is still activated test the unit by depressing the PTT button and talking into the mask microphone You should hear your voice in the earphone s via side audio Follow the procedure in Section 3 1 2 3 if the side audio volume needs to be adjusted If you are going to use the SSB 2001B 2 in the voice activation VOX mode set the unit to VOX mode Section 3 1 2 1 and use a vowel sound such as AH or say the number FOUR to trigger the VOX If the VOX is too sensitive or not sensitive enough adjust it according to the instruc tions in Section 3 1 2 4 Verify your transceiver is set to the same channel everyone else will be using earphone volume levels both receive and side audio are to your liking and the squelch sensitivity setting is proper for the underwater environment and required range see Section 2 2 If the squelch setting needs to be adjusted refer to Section 3 1 2 5 for instructions Repeat the above steps with another transceiver to verify that it is opera tional and on the same channel
34. n clockwise 8 9 10 This setting provides a medium VOX sensitivity This is our factory preset setting Graph shows VOX setting at 1 1 2 turns clockwise 0 1 2 3 4 5 6 7 8 VOX will trigger easily and may falsely trigger Graph shows VOX setting at 2 turns clockwise 0 1 2 3 4 5 6 7 8 9 10 We recommend this setting for less sensitive microphones Figure 4 Effect of VOX sensitivity adjustment Because the housings must be separated to access the VOX sensitivity control this adjustment must be made on the surface not underwater 3 1 2 5 Squelch Sensitivity Adjustment As explained in Section 2 2 last para graph the squelch function helps to suppress background noises but also reduces range To adjust its sensitivity level open the unit Section 3 1 1 and use the sup plied AD 1 adjustment tool to turn up clockwise or down counterclockwise the squelch level The effect of squelch adjustment is illustrated in Figure 5 Because the housings must be separated to access the squelch sensitivity control this adjustment must be made on the surface not underwater 3 2 SETUP BEFORE A DIVE Preparing your SSB 2001B 2 for a dive involves installing proper batteries inspec tion of the unit and accessories a basic equipment check preliminary electronic adjustments and donning the unit with your dive gear The following steps should be taken before each dive 14 Graph shows squelch setting at 1 turn clockwise No
35. nce second 3 6 AFTER THE DIVE 1 Disconnect the Hi Use connector from the mask or helmet Remove your mask or helmet Remove your SSB 2001B 2 transceiver 2 As soon as possible rinse the unit in freshwater to remove salt and other mineral deposits 3 Although the Aquacom SSB 2001B 2 is ruggedly constructed for long life in the marine environment we strongly recommend that you place it in a protec tive carrying case between dives taking special care to avoid damaging the transducer 3 7 HELPFUL HINTS Note This list is not in order of priority 1 Your speech should be considerably slower than normal and each word should be pronounced clearly and distinctly Speak one word at a time instead of in flowing sentences Do not shout but use slightly louder than normal conversa tion volume Minimize exhalation while speaking Your communication will 18 10 3 8 be more easily understood if you are relaxed since speech is less intelligible as a diver becomes more anxious Listen for a break in conversation if others are communicating on the same channel in the area Identify whom you are calling and then identify yourself Continue speaking until the message is complete At the end of each message say Over if a response is required and Out if not See Section 3 8 The microphone element should be within 1 4 inch of the diver s lips especially if the microphone has noise cancelling properties See Section
36. nnection therewith Neither Seller nor Manufacturer shall be liable either in tort or in contract for any loss or damage direct incidental or consequential arising from the use of or the inability to use the product No statement or recommenda tion not contained herein shall have any force or effect unless it is in an agreement signed by officers of the Seller and Manufacturer IMPORTANT SAFETY NOTICE Please read before using product It is absolutely essential that all divers are properly trained and equipped and fully understand this user s manual before attempting to use the Aquacom SSB 2001B 2 While the SSB 2001B 2 provides divers with good underwater communica tions it does not change or eliminate the potential hazards of diving Refer to the Library page of our Web site www otscomm com for a list of any changes made to this manual since its publication Copyright 2008 by Undersea Systems International Inc dba Ocean Technology Systems All rights reserved Specifications subject to change without prior notice 506087 000 C TABLE OF CONTENTS Section 1 Introduction i ee cece ceeeeeceeeeeeeeeeeeeesaesaeceeeaesneesaeeeees 1 Vel Gretta ct sects cate eee eee E EE E EE 1 1 2 Speci cations wx svsecciteesscsveds dioses areeni aese iea tend ncerendees 2 1 3 When You Receive Your Shipment cccceceeseeeeeeeeeeneeeeeseees 3 Section 2 Equipment Description 20 00 00 eee eee ceeneceeene
37. ows the use of various standard or custom earphone microphone EM assemblies designed for an assortment of diving masks and rebreathers and with microphones for a variety of underwater applications Either alkaline or rechargeable batteries can be used Overall the SSB 2001B 2 was designed with simplicity and flexibility in mind For surface operation diver to surface or vice versa the user has the option to purchase the CDK 6 Surface Accessory Kit to transform the SSB 2001B 2 into a portable surface unit Also available are the Aquacom STX 101 STX 101M SP 100D and Magnacom MAG 1001S surface stations Contact Ocean Technology Systems or your local OTS dealer for more information 2 2 FEATURES The Aquacom SSB 2001B 2 is equipped with two channels 32 768 kHz up per sideband USB Channel 1 and 25 kHz USB Channel 7 It is designed for through water wireless communication with other transceivers operating at the same frequency Power is supplied by eight AA alkaline batteries not included or the RB 11 nickel metal hydride NiMH rechargeable battery pack p n 900284 000 available from Ocean Technology Systems or your local OTS dealer 4 Both voice activation VOX and push to talk PTT modes are available for transmission and switching between them is done electronically for convenience Separate volume controls are provided for receive and side audio so that the diver can adjust the relative volume levels to his p
38. reference A squelch feature is included to provide quieter communications The squelch which functions similarly to the squelch of a CB radio helps suppress background noises created by sea creatures human activity or other sources e g snapping shrimp croakers motor boats pool pumps Below the squelch level set by the user the squelch feature prevents any sound presumably just noise from being heard through the earphones Louder sound e g received communications will break the squelch allowing the received sounds to be heard When the squelch is used you will hear only the communication signals strong enough to break the squelch so communication range is limited If long communication range is desired minimal or no squelch should be used If the diver is working close range to other divers or a surface station an increased setting can be used The optimal squelch sensitivity setting for your diving conditions is one that is high enough to screen out as much ambient noise as possible while still allowing all communications from your group to be heard 2 3 FUNCTIONS AND CONTROLS This section describes the various functions and controls of the Aquacom SSB 2001B 2 For detailed instructions for how to make adjustments and operate the unit see Section 3 Refer to Figures 2 and 3 for the locations of the items referred to in this section To access the controls depicted in Figure 3 follow the instructions in Section 3 1
39. se Our obligation under this warranty is limited to the replacement of any part or parts which prove to our satisfaction to have been defective and which have not been misused or carelessly handled Labor is warranted for 1 year from time of purchase The complete unit and or part must be returned to our factory transportation charges pre paid We reserve the right to decline responsibility where repairs have been made or attempted by other than an Ocean Technology Systems factory trained service center or properly trained personnel In no event shall Ocean Technology Systems be liable for consequential damages You can now register your product online at the OTS Web site Just visit http www otscomm com register html Ocean Technology Systems 3133 W Harvard Street Santa Ana CA 92704 USA Telephone 714 754 7848 Toll Free 800 550 1984 Fax 714 966 1639 ots otscomm com www otscomm com Copyright 2008 by Undersea Systems International Inc dba Ocean Technology Systems All rights reserved Specifications subject to change without prior notice
40. t recommended may disable communications from divers and or surface Figure 5 Effect of squelch sensitivity adjustment 1 If fresh alkaline or fully recharged batteries are not already in the transceiver install them or if you are using the RB 11 nickel metal hydride rechargeable battery pack sold separately recharge the battery through the unit housing See Section 4 for battery installation and recharging instructions 2 Ensure both o rings Fig 2 4 and 11 are clean and in good condition They should both be lightly lubricated with a quality pure silicone grease When reinstalling the transducer after inspecting its o ring ensure it is properly seated and secured 3 Verify the battery connector wire Fig 2 8 has not been pinched between the upper and lower housings of the transceiver A pinched wire would cause flooding damaging the transceiver 4 Assure that the upper and lower housings are properly sealed together with no high spots 5 Install the earphone microphone EM assembly into your full face mask or helmet according to the installation instructions provided with the EM as 15 sembly See Section 2 4 2 for information on available EM assemblies 6 With a quality pure silicone grease lightly grease the two sockets and the plastic bases of the two pins of the Hi Use connectors of both the SSB 2001 B 2 Fig 2 1 and the EM cable Then fully join the two connectors 7 Perform the fol
41. the battery wire Fig 2 8 join together the upper and lower housings such that their surfaces are completely flush 4 Place the transceiver so it stands on or against a stable surface 12 5 Raise the latches Fig 2 5 on the lower housing over the catches 2 on the upper housing While taking care to maintain the seal between the two housings pull both handles all the way down simultaneously until they snap to rest against the lower housing 6 Check the unit to ensure the housings are tightly joined together with a wa tertight seal If water enters the unit damage could result 3 1 2 MAKING ADJUSTMENTS AND SETTINGS 3 1 2 1 VOX PTT Mode Selection When the power is first turned on the SSB 2001B 2 is in push to talk PTT transmission mode To change to VOX mode press the PTT button Section 2 3 1 twice in one second To change back to PTT mode again press the PTT button twice in one second Because the transmission mode is changed using the PTT button this operation can be done underwater while diving See Section 2 3 2 for more information on the VOX function and Section 3 1 2 3 for instructions for adjustment of VOX sensitivity 3 1 2 2 Channel Selection To choose between channels 1 and 7 separate the transceiver housings Section 3 1 1 to access the control panel to prevent water entry this must be done on the surface not while diving Move the channel selec tion switch Section 2 3 3 to the desired channel
42. the functionality and versatility of the SSB 2001B 2 will greatly enhance your diving experience This user s manual contains information regarding the Aquacom SSB 2001B 2 underwater communication system including earphone microphone assemblies and support equipment The SSB 2001B 2 with optional EMA 2 earphone microphone assembly is il lustrated in Figure 1 HI USE CONNECTOR ce fe i a L a So Bin JAA 1 AQUACOM SINGLE SIDEBAND ACOUSTIC PHONE b E Qe EMA 2 EAR MIC ASSEMBLY 911060 001 Figure 1 SSB 2001B 2 with typical earphone microphone assembly 1 2 SPECIFICATIONS Nominal range Acoustic output power Audio frequency response Receiver sensitivity Automatic gain control Transmitter activation Standard frequencies Battery life Battery type Transducer Earphone Housing Maximum depth Housing dimensions Operating temperature Storage temperature Low battery indication Connector type Battery chargers Calm sea Greater than 1000 meters nominal Sea State 6 200 meters nominal 5 watts PEP 178 5 dB re 1 uPA at 1 meter 300 4000 Hz 110 dBv 120 dB dynamic range Voice operated transmitter VOX or manual acti vation PTT 32 768 kHz USB Channel 1 25 kHz USB Channel 7 Eight AA alkaline batteries 12 hours assuming 10 transmission
43. tneeeeeneees 4 Zl General DESCH PHON isre eaii eeno re oeae onara thas tats ossaectess 4 D2 PAWS E E E E E select nsvenetees tastes 4 2 3 Functions and Controls 0 cecccccccececsececeeeeeeeeeceeeeeeeeeeeteeeeeeeeees 5 2 3 1 Manual Push to Talk PTT Switch ce cceceeeeeeeeeeeee 5 2 3 2 Voice Operated Transmitter VOX cceceeseeseeeeeeteeeeees 7 2 3 3 Chanmnels Frequencies s 6 cscsrigeesccscnsetsiece csessevcdvonennssetets 7 2 34 Receive VOM ies iisctsctectestagesisndentune dieusn nies 7 2 35 Sid Atidiod Vole c c0 0 cess ecieisesdiess diese eoevurareeeraesione 7 PAER CME E E PE E E A AE 7 24 Components and ACCeSSOTFICS ccceceseeseceseeteceeeeeeeeeeeteeeeeeeeeaes 7 ZAL Transducer eree eree EEE E EEEE EEEE SEERE 7 2 4 2 Earphone Microphone EM Assemblies ceeeeeee 8 2 4 2 1 EMA 2 911060 001 essees 8 2 4 2 2 EMA 2SM 911060 098 n se 8 2 4 2 3 EMX 2 911060 008 sssrin 8 2 4 2 4 EMX 2B 911060 026 cceceeseeeeteeseteereneeeens 8 2 4 2 5 EMO 2 900096 686 u s 8 2 4 2 6 EMH2 1 911060 009 nsss 8 2 4 2 7 EMH2 1SM 911060 100 s es 8 2 4 2 8 EMS 2 911060 017 seee 8 2 4 2 9 LAR V Adapter 900282 000 0 ceeceeereeeeees 9 2 4 2 10 EMD 2 911060 067 eeeeceseeeteeeeteeseneeeeeeeens 9 2 4 2 11 EMD 2SM 911060 101 sssr 9 2 4 2 12 EMDG 2 911060 076 n se 9 2 4 2 13 EMH1 1 900332 000 n se 10 2 4 2 14 EMH1 1SM 900332 001 sses 10 2 4 2 15
44. ton It is installed into a port on the side of the FFM 2 4 2 6 EMH2 1 911060 009 The EMH2 1 EM assembly is optionally included with the HM 2 mouth mask It has one head strap one ceramic earphone a Hot Mic a Hi Use connector and a PTT button located on the HM 2 mask 2 4 2 7 EMH2 1SM 911060 100 The EMH2 1SM EM assembly is optionally included with the HM 2 mouth mask It has a head strap one ceramic earphone a Super Mic a Hi Use connector and a PTT button on the HM 2 mask 2 4 2 8 EMS 2 911060 017 The ES is an EM assembly designed to be Table 1 Compatible Earphone Microphone Assemblies Type Mask Rebreather Standard ear mic HotMic Dual Divator MK II FFM Standard ear mic Super Mic Dual Divator MK II FFM Model Number Part Numbe EMA 2 911060 001 EMA 2SM 911060 098 EMA SW 1 910274 000 war annk Dal SW ee SW ual ua EMA SW 1SM 910274 001 EMA MK24 910279 000 EMA MK24 SM 910279 001 EMDG 2 911060 076 EMX 2 911060 008 EMX 2B 911060 026 Standard ear EXO 26 standard Standard ear mic HM 1 mouth mask EMH MAG2 900332 000 EMH MAG2SM 900332 001 Standard ear mi HM 1 mouth mask HM 1SW 910281 000 Swe HM 1SW SM 910281 001 EMH 1 911060 009 EMH 1SM 911060 100 LAR V Adapter 900282 000 LARS SW 900282 006 SW ear mic Dynamic mic D Dua LAR V rebreather Standard ear mic Hot Mi Dual M 48 SuperMask Standard ear mi SuperMic Dual M 48 SuperMask
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