[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PSUBS-MAILIST] Interphase Vista
Nice work David!
I have a couple questions about the repair, and a couple comments about
the device. In regards to the repair, can you provide more detail on
what the problem was as well as the solution. Your description did not
say what you did with the shielding of the individual nine wires. Some
photos would speak volumes here. As I understand it, the "cable"
consists of nine individual wires. Eight wires are both insulated and
shielded. The ninth wire is bare. All wires were cut, including the
shielding. You reconnected all the insulated wires with in-line crimps
(I assume you mean a solderless butt connector), and you reconnected the
non-insulated wire with a butt-connector. How then did you handle the
foil shielding for each individual wire?
Jon
David Bartsch wrote:
To all (and Alec),
The forward scanning sonar is repaired and wow! I must have one of
these things! This gives you the ability to split screen the display
to give a picture view of both the bottom contour and a forward scan
of what's ahead!
When not in the split screen mode it shows the depth in large black
lettering on the upper right of the display.
I can see the bottom of the above ground pool very well and when
turned from side to side shows this narrowing of the channel forward
of the unit on the side with the side of pool closer to this transmit
head.
The sensitivity can be adjusted which would be great in weed thick
areas to diminish this soft return item.
Selecting greater depths is but a push of a button away. The
selections are in easy to read menu selections. (for people who are
challenged like me)
It is very accurate and uses a lcd display with the forward scan
being updated from left to right with the speed controlled by the
depth selection. The deeper of course the slower this scan rate.
Now to the meat of our problem...
Each wire (of which there are nine) is wrapped in a fine aluminum
foil. As signals spike there way down the individual wires, any extra
emf produced by the wire that sends it is transferred to this foil.
One of the nine wires has no insulation on it and as these foil runs
are physically touching, this extra signal is channeled to this bare
wire and in this way does not go to the other wires within this cable.
To repair this unit, I simply removed the thru hull provided and
connected this original transducer cable with itself using nine
in-line crimps (no shielding). The thru hull first installed had three
feet of wire that although containing individual wires was not
shielded from cross talk. This is what clouded his display and allowed
for only bottom depth indications.
How does he install this wire (we already know we can cut this
cable to insert it perhaps as an intact cable) thru the side of a
submarine and ensure it is sealed against leaks under water pressure?
Is there a thru hull that can handle nine wires and keep them from
transferring emf one wire to another?
I MUST have such a unit! Lets get some idea's on this one as this
thing is nothing short of awesome!
David Bartsch
------------------------------------------------------------------------
Hotmail: Trusted email with powerful SPAM protection. Sign up now.
<http://clk.atdmt.com/GBL/go/210850553/direct/01/>
************************************************************************
************************************************************************
************************************************************************
The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003. Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.
If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
removeme-personal_submersibles@psubs.org
Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of
our server receiving your request.
PSUBS.ORG
PO Box 53
Weare, NH 03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************