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Summary of Contents for Aquacom MK2-DCI
- Page 1 Two- or One-Diver Intercom User Guide “Technology in Depth”...
- Page 2 Undersea Systems International, Inc., dba Ocean Technology Systems, re- serves the right to change specifications without notice. It is recommended that all users read and fully understand this manual before using MK2-DCI. All statements, technical information, and recommendations herein are based on tests we believe to be reliable, but the accuracy or completeness thereof is not guaranteed;...
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Page 3: Table Of Contents
Introduction (Section 1) ............1 MK2-DCI Specifications (Section 2) ........2 MK2-DCI Operating Instructions (Section 3) ...... 3-4 Figure 1 (MK2-DCI Two-Diver Air Intercom) ......5 Two-Wire Mode (Section 4) ............ 6 Two-Wire Mode (Figure 2), Four-Wire Mode (Figure 3) ..7 Four-Wire Mode .............. -
Page 4: Introduction (Section 1)
SECTION 1 INTRODUCTION: Congratulations! You have just purchased the finest, state-of-the-art hard-wire intercom in the world. Your new MK2-DCI Two- or One- Diver Air Intercom represents state-of-the-art technology and innova- tion—the choice of discriminating divers throughout the world. Please take the time to read this owner’s manual. With proper care and use, your Ocean Technology Systems product will provide you with the ul- timate in high-quality communications and reliability. -
Page 5: Mk2-Dci Specifications (Section 2)
SECTION 2 MK2-DCI SPECIFICATIONS: Battery Life: 20 hours continuous use Battery Type: (2) 6-volt lantern batteries, recommended batteries (Eveready Heavy Duty Alkaline #528 or Duracell Heavy Duty Alkaline ID #9150) or an external 12-volt source; op- tional 6-volt rechargeable batteries. -
Page 6: Mk2-Dci Operating Instructions (Section 3)
SECTION 3 MK2-DCI OPERATING INSTRUCTIONS (see page 5): 1) Record Out: Permits tender to record diving operations (Line level). 2) Volume: Tender-to-diver(s) volume control. 3) Power ON: Turns the power ON or OFF. 4) Battery Level: Color LEDs illuminate to alert tender to condi- tions of batteries. - Page 7 14) Earphone: Diver #2: microphone connection (banana or bare-wire style). 15) Handle: Front panel handle (right & left side). 16) Volume: Diver #2: tender-to-diver volume control. 17) Volume: Diver #2: diver-to-tender volume control. 18) Speaker: Front panel speaker. 19) Thumb Screw: One of four front panel screws (captive). 20) Speaker: Remote speaker output (speaker level).
- Page 8 MK2-DCI TWO-DIVER AIR INTERCOM Figure 1...
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Page 9: Two-Wire Mode (Section 4)
(PTT) button to communicate. Our headset with a boom microphone has a PTT button located on one side of the headset. The MK2-DCI also has a PTT. The divers’ communication is the primary signal. When the tender uses the PTT button, his signal becomes the primary signal. -
Page 10: Two-Wire Mode (Figure 2), Four-Wire Mode (Figure 3)
TWO-WIRE MODE (Figure 2) FOUR-WIRE MODE (Figure 3) -
Page 11: Four-Wire Mode
“MICROPHONE” (Tender’s section). The diver’s microphone should be connected to the “MICRO- PHONE” banana plug (red) in the Diver’s setion of the MK2-DCI. When in the four-wire mode, everyone is on-line together. It is similar to a telephone conference call. -
Page 12: Batteries (Section 7)
SECTION 6 BATTERIES: The MK2-DCI Two-Diver Air Intercom can be powered by two 6-volt heavy duty Alkaline batteries, rechargeable 6-volt batteries (RB-6), or a 12-volt alternate source. The following are options for the desired power source: 1) LANTERN BATTERIES: The MK2-DCI is designed to use two 6- volt spring connector type batteries. - Page 13 TERIES.” To recharge the optional rechargeable batteries, you do not need to remove them from the MK2-DCI. Just connect the RC-13 battery charger to the front panel 12-volt external power jack. Then connect the charger’s power plug to any 110-volt, 60-cycle power outlet and let the battery charge for no more than 14 hours.
- Page 14 ALWAYS WAIT A MINIMUM OF 20 MINUTES FOR ANY GASSES EXPELLED DURING CHARGING TO DISSIPATE BEFORE POWERING UP THE MK2-DCI. AVOID SMOKING, OPEN FLAMES, OR STRIKING A MATCH WHILE CHARGING BAT- TERIES. 3) ALTERNATE POWER SOURCE: The external receptacle (see Fig- ure 1, #5) provides an easy terminal for a marine or automotive 12-volt DC source.
- Page 15 The warning mode continues until the user installs fresh bat- teries, charges the batteries, or connects a 12-volt power source, or un- til the power drops enough to shut down the MK2-DCI (see chart be- low). LED CHART...
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Page 16: Helpful Hints
(see Figure 2), and con- tinue diving operations. 7) Secure the MK2-DCI if using the unit on a vessel that is rolling about. Also strain-relief the umbilical(s) so they will not pull on the MK2-DCI. - Page 17 TROUBLESHOOTING FOR MK2-DCI PROBLEM PROBABLE CAUSE REMEDY No Power Battery exhausted Replace battery Battery leads loose Check battery connectors Defective ON/OFF Change switch switch Board connector not Clean pins making contact Open circuit on board Repair or replace board Power only for a short...
- Page 18 PROBLEM PROBABLE CAUSE REMEDY Defective pre-amp Replace chip Open trace on board Repair trace or replace board PTT logic circuits Repair or replace defective board Weak battery Charge (if rechargeable) or replace Microphone pre-amp Trace signal to find circuit defective fault and replace defective part No record-out function...
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Page 19: Limited Warranty
Undersea Systems International Ocean Technology Systems LIMITED WARRANTY The MK2-DCI is fully warrantied against defects in materi- als and workmanship for a period of 1 year from the time of purchase. Our obligation under this warranty is limited to the replacing of any part or parts that prove to our satisfac- tion to have been defective and that have not been misused or carelessly handled. - Page 20 NOTES:...
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