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SECTION 5: HELPFUL HINTS

1)

Before diving operations begin, check to be sure the microphone, earphones,
and wire connections are secure and operating properly. Ninety percent of all
problems in communications turn out to be a problem with one of the above.

2)

When in the four-wire mode, you must use a headset with a boom microphone,
and the Diver Select switch must be in the “BOTH” position. If feedback is
present, switch off the front panel speaker (Fig. 1, #24).

3)

Avoid excessive tender-to-diver volume. Most of the time, when there is too
much volume, the diver will hear distortion and ask for more volume!

4)

Before diving operations, always check the battery power level, and replace or
recharge the batteries if necessary.

5)

Make certain the headphone and remote PTT plugs are securely inserted into
the proper receptacle.

6)

When in the four-wire mode and a wire breaks, try setting the system up in the
two-wire communication mode (Fig. 2), and continue 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.

8)

Ensure the umbilicals are dressed out so as not to trip anyone.

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Summary of Contents for Aquacom MK2-DCI

Page 1: ...User s Guide Technology in Depth Two or One Diver Intercom AQUACOM MK2 DCI...

Page 2: ...es all risk and liability whatsoever in connection therewith Neither Seller nor Manufacturer shall be liable either in tort or in contract for any loss or damage direct incidental or consequential ari...

Page 3: ...s 3 3 1 System Components 3 3 2 Two Wire Mode 4 3 3 Four Wire Mode 5 Section 4 Batteries 7 Section 5 Helpful Hints 10 Limited Warranty 13 Illustrations Figure 1 MK2 DCI Two Diver Air Intercom 4 Figure...

Page 4: ...contained Two or One Diver Air Intercom pro viding clear communications between the operator and diver s The MK2 DCI offers two or four wire communications This manual will cover specifications operat...

Page 5: ...kaline ID 9150 or an external 12 volt source optional 6 volt rechargeable batteries Power Output 20 watts Frequency Response 600 to 12 000 Hz Cabinet Material ABS plastic Front Panel 1 8 aluminum chem...

Page 6: ...0 Earphone Diver 1 earphone connection banana or bare wire style 11 Microphone Diver 1 microphone connection banana or bare wire style 12 Volume Diver 1 tender to diver volume control 13 Microphone Di...

Page 7: ...e surface unit Fig 2 If a four wire cable is used two wires are normally twisted together for one side of the microphone binding post and the remaining two wires twisted together for the other microph...

Page 8: ...ender and up to five divers or any combination of recompression chambers or diving bells The four wire mode will give you optimum performance and intelli gibility by the MK2 DCI Using this method ever...

Page 9: ...6 Figure 2 Two Wire Mode Figure 3 Four Wire Mode...

Page 10: ...antern batteries springs facing toward battery PC board Fig 4 4 Verify that the batteries are secure on the bottom of the housing and the backs are being held by the back plate You will notice the bat...

Page 11: ...e rechargeable batteries We recommend that rechargeable batteries be used when external power is supplied The ex ternal source should provide a voltage greater than 12 but less than 15 volts It will r...

Page 12: ...the warning beeps will come every 15 seconds At this point the MK2 DCI will audibly start warning you of lower power with a beeping sound every 30 seconds When the voltage falls to about 7 volts the r...

Page 13: ...volume Most of the time when there is too much volume the diver will hear distortion and ask for more volume 4 Before diving operations always check the battery power level and replace or recharge th...

Page 14: ...n power switch board is turned on Defective CPU chip Replace CPU or replace board No diver voice Loose connection at Check connector ribbon lead connector clean or reconnect Board connectors Clean pin...

Page 15: ...mp Trace fault around record op amp and replace faulty part Replace board Weak output to divers Power amplifier Replace power and tender defective amplifier chip Defective component Trace part and rep...

Page 16: ...he complete unit and or part must be returned to our factory transportation charges prepaid We reserve the right to decline responsibility where repairs have been made or attempted by other than an Oc...

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