[PSUBS-MAILIST] OTS Issue

Fri Oct 25 08:09:31 EDT 2013

The OTS box does not know whether the transducer is in the water or not.
What will turn it on is connecting the transducer cable. When you do so,
you are closing the connection between contacts 1 and 3, and closing that
circuit is the equivalent of clicking an "on" switch.

Best,

Alec

On Fri, Oct 25, 2013 at 6:52 AM, James Frankland <
jamesf at guernseysubmarine.com> wrote:

> Hi Alec,
>
> Before i report my finding of last night, i think i might be being a
> complete numpty.  I am assuming that the radio will come on even though the
> transducer is not in the water?  Obviously no signal but i was assuming the
> radio would at least crackle to life.  Does the transducer need to be
> underwater before the radio will switch on??
>
> Thanks
> James
>
> On 24 October 2013 13:09, James Frankland <jamesf at guernseysubmarine.com>wrote:
>
>> Hi Alec,
>>
>> Ok, i think i get it.  I will investigate later and report back...!  Many
>> thanks.
>> James
>>
>>  On 24 October 2013 12:56, Alec Smyth <alecsmyth at gmail.com> wrote:
>>
>>> Let me try and re-word this... You will find the cable has two
>>> conductors, but the connector has three contacts. Two of the contacts are
>>> connected to the same cable. Thus when you screw the connector onto the OTS
>>> unit, it closes a circuit between the two contacts. Don't cut open the
>>> connector, you can explore this just by checking continuity between the
>>> contacts.
>>>
>>> Sorry, I hope I'm not repeating myself!
>>>
>>>
>>> Alec
>>>
>>>
>>> On Thu, Oct 24, 2013 at 6:42 AM, James Frankland <
>>> jamesf at guernseysubmarine.com> wrote:
>>>
>>>> Im a bit confused as when i cut the cable (some distance from the
>>>> connector), there are only 2 cables.  The inner cable and the shield.  So
>>>> not sure where this 3rd cable is.  I will take the connector appart and
>>>> investigate....
>>>>
>>>> Thanks
>>>> james
>>>>
>>>>  On 24 October 2013 11:20, Alec Smyth <alecsmyth at gmail.com> wrote:
>>>>
>>>>> In the connector you screw onto the OTS box, just connect both 1 and 3
>>>>> to the same cable.
>>>>>
>>>>> Best,
>>>>>
>>>>> Alec
>>>>>
>>>>>
>>>>> On Thu, Oct 24, 2013 at 5:02 AM, James Frankland <
>>>>> jamesf at guernseysubmarine.com> wrote:
>>>>>
>>>>>> Hi Emile\Alec,
>>>>>>
>>>>>> Thanks for that info.  Not quite sure how i can connect pins 1 and 3,
>>>>>> but i will have another look at it later on after work and see how it looks.
>>>>>> Many thanks
>>>>>> James
>>>>>>
>>>>>>  On 23 October 2013 18:14, Smyth, Alec <Alec.Smyth at covisint.com>wrote:
>>>>>>
>>>>>>>   Hi James,****
>>>>>>>
>>>>>>> ** **
>>>>>>>
>>>>>>> OTS have done something clever. The OTS transducer has only two
>>>>>>> contacts, but the when you use the factory cable for mounting the
>>>>>>> transducer remotely you will notice the cable connector has three contacts.
>>>>>>> What they are doing is using two of them (#1 and #3) connected together to
>>>>>>> act as a switch, so that when you plug in the cable the OTS box turns on. I
>>>>>>> think if you keep your current arrangement, but also connect contacts 1 and
>>>>>>> 3, you might find it works.****
>>>>>>>
>>>>>>> ** **
>>>>>>>
>>>>>>> Best,
>>>>>>>
>>>>>>> Alec****
>>>>>>>
>>>>>>> ** **
>>>>>>>
>>>>>>> *From:* Personal_Submersibles [mailto:
>>>>>>> personal_submersibles-bounces at psubs.org] *On Behalf Of *Emile van
>>>>>>> Essen
>>>>>>> *Sent:* Wednesday, October 23, 2013 12:34 PM
>>>>>>> *To:* 'Personal Submersibles General Discussion'
>>>>>>> *Subject:* Re: [PSUBS-MAILIST] OTS Issue****
>>>>>>>
>>>>>>> ** **
>>>>>>>
>>>>>>> James,****
>>>>>>>
>>>>>>> ** **
>>>>>>>
>>>>>>> It usually gives no problem to cut a transducer cable and solder it
>>>>>>> again. Don’t forget the shield.****
>>>>>>>
>>>>>>> Obvious, the transducer must be in water and may not be in the shade
>>>>>>> of the sub.****
>>>>>>>
>>>>>>> ** **
>>>>>>>
>>>>>>> Got mine on top of the sail. Best place but works not on surface..**
>>>>>>> **
>>>>>>>
>>>>>>> ** **
>>>>>>>
>>>>>>> BTW; I am dealer of  Ocean Reef  UW Communication ;  This brand
>>>>>>> share the same technology as OTS so you can talk between the 2 brands..)
>>>>>>> ****
>>>>>>>
>>>>>>> ** **
>>>>>>>
>>>>>>> ** **
>>>>>>>
>>>>>>> Best regards, Emile****
>>>>>>>
>>>>>>> .****
>>>>>>>
>>>>>>> ** **
>>>>>>>
>>>>>>> ** **
>>>>>>>
>>>>>>> ** **
>>>>>>>
>>>>>>> ** **
>>>>>>>  ------------------------------
>>>>>>>
>>>>>>> *Van:* Personal_Submersibles [
>>>>>>> mailto:personal_submersibles-bounces at psubs.org<personal_submersibles-bounces at psubs.org>]
>>>>>>> *Namens *James Frankland
>>>>>>> *Verzonden:* woensdag 23 oktober 2013 18:05
>>>>>>> *Aan:* personal_submersibles at psubs.org
>>>>>>> *Onderwerp:* [PSUBS-MAILIST] OTS Issue****
>>>>>>>
>>>>>>> ** **
>>>>>>>
>>>>>>> Hi All,****
>>>>>>>
>>>>>>>  ****
>>>>>>>
>>>>>>> Anyone got any thoughts on this.****
>>>>>>>
>>>>>>>  ****
>>>>>>>
>>>>>>> My OTS surface station mounted inside the sub didnt work.  It didnt
>>>>>>> even switch on.  I checked the Vout at the batteries (16x AAA inside the
>>>>>>> unit) and it was good at 12V.****
>>>>>>>
>>>>>>>  ****
>>>>>>>
>>>>>>> I suspect the problem is that i cut the transducer cable to pass it
>>>>>>> through a sub conn bulkhead connector.  When you plus the transducer into
>>>>>>> the unit, that is supposed to turn it on at the same time, but nothing.
>>>>>>> Suspect no signal from the transducer so unit not switching on.****
>>>>>>>
>>>>>>>  ****
>>>>>>>
>>>>>>> You can see the rubbish effort i made of it here.  Im almost sure
>>>>>>> this is the fault.****
>>>>>>>
>>>>>>>  ****
>>>>>>>
>>>>>>> http://www.guernseysubmarine.com/Extended_files/Page22133.htm****
>>>>>>>
>>>>>>>  ****
>>>>>>>
>>>>>>> Anyone got any ideas?  I need to get this fixed before the nest dive.
>>>>>>> ****
>>>>>>>
>>>>>>>  ****
>>>>>>>
>>>>>>> Thanks****
>>>>>>>
>>>>>>> James****
>>>>>>>
>>>>>>> _______________________________________________
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>>>>>>>
>>>>>>>
>>>>>>
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>>>>>>
>>>>>
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>
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