Today's Message Index:
----------------------
1. 06:15 AM - Re: Marking wires made easier (John Slade)
2. 07:12 AM - OT: WTB: VSI (Jon Finley)
3. 09:04 AM - Re: Mic wiring (Rob Housman)
4. 09:33 AM - Re: Mic wiring (BobsV35B@aol.com)
5. 09:50 AM - Stereo Headsets (Stucklen, Frederic IFC)
6. 09:57 AM - Re: Mic wiring (Rob Housman)
7. 11:09 AM - Re: PTT Wiring (Robert L. Nuckolls, III)
8. 12:55 PM - Re: Van's ammeter & E-Bus (James Foerster)
9. 01:14 PM - shield pigtail (Shannon Knoepflein)
10. 07:52 PM - AMP CPC or Equivalent Connectors (John Schroeder)
11. 09:14 PM - Re: AMP CPC or Equivalent Connectors (HCRV6@aol.com)
12. 09:31 PM - Re: PTT Wiring (Don Boardman)
Message 1
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| Subject: | Marking wires made easier |
--> AeroElectric-List message posted by: "John Slade" <sladerj@bellsouth.net>
> While its cool to be able write on shrink wrap tube, I can never
> remember to put the tube on before the connector.
Thank you, Rob. I thought it was just me. I've wasted quite a few connectors
that way too.
John Slade
Cozy IV
Message 2
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--> AeroElectric-List message posted by: "Jon Finley" <jon@finleyweb.net>
Sorry for being so off-topic.
Anyone have a used 3-1/8" 0-3000 (or more) VSI that they want to sell
(cheap - hopefully)?? I know the cheap UMA units run about $110.00.
If so, please reply directly to me: jon@finleyweb.net
Thanks,
Jon
DO NOT ARCHIVE
Message 3
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--> AeroElectric-List message posted by: "Rob Housman" <RobH@hyperion-ef.com>
PS Engineering does manufacture for others, and definitely makes the UPS
SL-10. The UPS warranty on the unit specifically states that "If the unit
is being installed by a non-certified individual in an experimental
aircraft, a factory-made harness must be used for the warranty to be valid.
This harness may be purchased directly from PS Engineering...."
Garmin makes no mention in their warranty of either requiring a factory made
harness or that the GMA-340 is manufactured by others. The only warranty
restriction mentioned on the Garmin Web site concerns units purchased
through on-line auctions - and that restriction applies only to verification
of the purchase for which they will require an original sales receipt,
presumably from original sale to the auction seller .
Best regards,
Rob Housman
Europa XS Tri-Gear A070
Airfarame complete
Irvine, CA
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Robert L.
Nuckolls, III
Subject: Re: AeroElectric-List: Mic wiring
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III"
<bob.nuckolls@cox.net>
At 02:13 PM 2/14/2003 -0500, you wrote:
>--> AeroElectric-List message posted by: John Schroeder
><jschroeder@perigee.net>
>
>Bob -
>
>I was told by an avionics supplier that PS Engineering makes the
>audio/intercomm
>boxes for Garmin and UPS. The rationale is that they couldn't do it any
>better
>or cheaper. Is this true?
Probably . . . a company that does a high volume of audio
specialty components can probably do a better job for less
money that one that butters their bread with high-dollar,
lower volume nav or communications equipment.
Bob . . .
Message 4
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--> AeroElectric-List message posted by: BobsV35B@aol.com
Good Morning All,
Considering the amount of discussion on this site concerning the merits of
the PS Engineering offerings, I wonder if there is any information available
about the units made by Northern Airborne Technology, Ltd.
They are advertising a panel mounted combination audio selector panel and
intercom, the AMS50 Premium Audio Control, which appears to be very similar
to the PS Engineering PMA 7000B.
I have no idea as to how the price compares.
Does anyone on this list have any comments, pro or con?
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Message 5
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--> AeroElectric-List message posted by: "Stucklen, Frederic IFC" <Fred.Stucklen@UTCFuelCells.com>
I just completed wiring my new RV-6A with a stereo audio panel (SL-10SM),
PXE7300 AM,FM, CD player and stereo headsets. The standard 1/4" stereo jacks
are what is required (available from Radio Shack and other places). This
jack will work for both stereo and mono applications.......
Fred Stucklen
RV-6A N926RV Reserved
I would like to wire my plane so that either mono or stereo headsets
can
be used. What plug/jack is used for stereo? I'me gessing its a
tip-ring-sleeve version of the same diameter jack as the mono. Do
you
have to put in both jacks or what?
Jim Bean
building RV-8
Message 6
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--> AeroElectric-List message posted by: "Rob Housman" <RobH@hyperion-ef.com>
More bad news. NAT's warranty includes this exception: "The warranty shall
be void if the equipment is not installed by an authorized NAT approved
Dealer in accordance with the installation instructions of NAT...."
More details at http://www.northernairborne.com/warranty.html
Best regards,
Rob Housman
Europa XS Tri-Gear A070
Airfarame complete
Irvine, CA
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of
BobsV35B@aol.com
Subject: Re: AeroElectric-List: Mic wiring
--> AeroElectric-List message posted by: BobsV35B@aol.com
Good Morning All,
Considering the amount of discussion on this site concerning the merits of
the PS Engineering offerings, I wonder if there is any information available
about the units made by Northern Airborne Technology, Ltd.
They are advertising a panel mounted combination audio selector panel and
intercom, the AMS50 Premium Audio Control, which appears to be very similar
to the PS Engineering PMA 7000B.
I have no idea as to how the price compares.
Does anyone on this list have any comments, pro or con?
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Message 7
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--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <bob.nuckolls@cox.net>
At 07:42 PM 2/16/2003 -0500, you wrote:
>--> AeroElectric-List message posted by: Don Boardman <dboardm3@twcny.rr.com>
>
>Hi Bob,
>
>I found out today that connecting the PTT wires at the AP/intercom is not
>practical. Physically it has been a challenge to solder the 25 conductors
>and their associated shields to the units connector. Holding the three
>conductors and the shield, with minimal protrusion from the cable end, in
>position to the pins is tough enough without trying to add the PTT
>conductors. I will make the connections at the jacks.
There are no great benefits to be derived from
"minimizing" unshielded conductors in a bundle
with lots of shielded wires.
If you have a 25 pin connector, there's no reason
to take more than 25 UNSHIELDED conductors into the
backshell for termination on the pins.
If this means 2-4" of "exposed" conductors,
no big deal. Daisy chain the shields together
as shown in
http://www.aeroelectric.com/articles/pigtail/pigtail.html
and bring a common shield pigtail into the connector
backshell. If you stager the shield terminations
so that they don't all happen at the same station
on length of wire bundle, then the finished product
can appear quite "slim" after all the dust settles.
Which brings me back to an oft repeated admonition,
"follow the instructions" . . . the folks who publish
them have tried it all out and can offer assurances
that it will work. If they want all the shields brought
to ground at pin-x in the connector, it doesn't
need to be difficult.
Bob . . .
Message 8
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| Subject: | RE: Van's ammeter & E-Bus |
--> AeroElectric-List message posted by: "James Foerster" <jmfpublic@attbi.com>
Richard Dudley,
The Van's ammeter likely has an op amp which cannot take any input outside
of the power supply range of the circuit. The diode drop from the E buss
can be compensated, though. If you take a diode in series with a 10K
resistor from each end of the current shunt, you will get the common mode
voltage from the shunt within range. To be sure, you might use two diodes
in series with the 10K resistor. The input to the ammeter would be the
diode-resistor junction from these two strings of diodes and resistor. If
Van's had used a current mode op amp such an LM3900, this would not be a
problem. Would anyone be interested in a circuit that would take the output
of a 50 mv shunt and reference it to ground? Should be cheap, and run a few
square inches. Input from shunt, output to meter, with ground and 12 v
power using pc board FASTON connectors?
Jim Foerster
Message 9
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--> AeroElectric-List message posted by: "Shannon Knoepflein" <kycshann@kyol.net>
Is it absolutely imperative that you connect a pigtail to the shield, or
is it possible/acceptable to twist the shield and crimp a pin to it and
insert it directly into the plug?
---
Shannon Knoepflein <---> kycshann@kyol.net
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Robert L. Nuckolls, III
Subject: Re: AeroElectric-List: PTT Wiring
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III"
<bob.nuckolls@cox.net>
At 07:42 PM 2/16/2003 -0500, you wrote:
>--> AeroElectric-List message posted by: Don Boardman
<dboardm3@twcny.rr.com>
>
>Hi Bob,
>
>I found out today that connecting the PTT wires at the AP/intercom is
not
>practical. Physically it has been a challenge to solder the 25
conductors
>and their associated shields to the units connector. Holding the three
>conductors and the shield, with minimal protrusion from the cable end,
in
>position to the pins is tough enough without trying to add the PTT
>conductors. I will make the connections at the jacks.
There are no great benefits to be derived from
"minimizing" unshielded conductors in a bundle
with lots of shielded wires.
If you have a 25 pin connector, there's no reason
to take more than 25 UNSHIELDED conductors into the
backshell for termination on the pins.
If this means 2-4" of "exposed" conductors,
no big deal. Daisy chain the shields together
as shown in
http://www.aeroelectric.com/articles/pigtail/pigtail.html
and bring a common shield pigtail into the connector
backshell. If you stager the shield terminations
so that they don't all happen at the same station
on length of wire bundle, then the finished product
can appear quite "slim" after all the dust settles.
Which brings me back to an oft repeated admonition,
"follow the instructions" . . . the folks who publish
them have tried it all out and can offer assurances
that it will work. If they want all the shields brought
to ground at pin-x in the connector, it doesn't
need to be difficult.
Bob . . .
Message 10
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| Subject: | AMP CPC or Equivalent Connectors |
--> AeroElectric-List message posted by: John Schroeder <jschroeder@perigee.net>
Anyone have a good source for the thru-firewall 39 pin or 24 pin (thereabouts)
electrical connectors? Finding any data on AMP CPC connectors or a supplier is
difficult.
Thanks,
John Schroeder
LNCE
Message 11
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| Subject: | Re: AMP CPC or Equivalent Connectors |
--> AeroElectric-List message posted by: HCRV6@aol.com
Try calling Tyco Electronics Technical Support Center at 1-800-522-6752. Ask
them to send you Amp catalog #82021, it has detailed info on the CPC line of
connectors as well as the metal shell connectors that might be more
appropriate for use in the firewall. When you are ready to buy, try Mouser
Electronics, 1-800-346-6873 or www.mouser.com. You might have to get Mouser
to send you their catalog.
Harry Crosby
Pleasanton, California
RV-6, starting firewall forward
Message 12
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--> AeroElectric-List message posted by: Don Boardman <dboardm3@twcny.rr.com>
Bob,
Thanks for the reply. I had a copy of your shield termination technique but
it did not seem to apply in this application.
The connections where solder connections. The schematic also showed each
shield terminated at the same pin as the ground or "Lo" (as it was labeled)
for each three (mic) or two (phone) conductor shielded cable.
I did follow the manufacturer's instructions (I agree they should know best)
and terminated (soldered) the Lo and the shield to the indicated pin.
Back at it tomorrow,
Don
> From: "Robert L. Nuckolls, III" <bob.nuckolls@cox.net>
> Reply-To: aeroelectric-list@matronics.com
> Date: Mon, 17 Feb 2003 13:08:11 -0600
> To: aeroelectric-list@matronics.com
> Subject: Re: AeroElectric-List: PTT Wiring
>
> --> AeroElectric-List message posted by: "Robert L. Nuckolls, III"
> <bob.nuckolls@cox.net>
>
> At 07:42 PM 2/16/2003 -0500, you wrote:
>> --> AeroElectric-List message posted by: Don Boardman <dboardm3@twcny.rr.com>
>>
>> Hi Bob,
>>
>> I found out today that connecting the PTT wires at the AP/intercom is not
>> practical. Physically it has been a challenge to solder the 25 conductors
>> and their associated shields to the units connector. Holding the three
>> conductors and the shield, with minimal protrusion from the cable end, in
>> position to the pins is tough enough without trying to add the PTT
>> conductors. I will make the connections at the jacks.
>
> There are no great benefits to be derived from
> "minimizing" unshielded conductors in a bundle
> with lots of shielded wires.
>
> If you have a 25 pin connector, there's no reason
> to take more than 25 UNSHIELDED conductors into the
> backshell for termination on the pins.
>
> If this means 2-4" of "exposed" conductors,
> no big deal. Daisy chain the shields together
> as shown in
>
> http://www.aeroelectric.com/articles/pigtail/pigtail.html
>
> and bring a common shield pigtail into the connector
> backshell. If you stager the shield terminations
> so that they don't all happen at the same station
> on length of wire bundle, then the finished product
> can appear quite "slim" after all the dust settles.
>
> Which brings me back to an oft repeated admonition,
> "follow the instructions" . . . the folks who publish
> them have tried it all out and can offer assurances
> that it will work. If they want all the shields brought
> to ground at pin-x in the connector, it doesn't
> need to be difficult.
>
> Bob . . .
>
>
>
>
>
>
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