Today's Message Index:
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1. 06:26 AM - Re: URGENT REQUEST Transponder Test Failed...Troubleshooting Suggestions Please ()
2. 07:15 AM - Re: URGENT REQUEST Transponder Test Failed...Troubleshooting Su (johnbright)
3. 07:31 AM - Re: 12v battery monitor with WiFi alerts? (Ronald Cox)
4. 08:47 AM - Re: Re: 12v battery monitor with WiFi alerts? (Art Zemon)
5. 10:15 AM - Multiple switches on the same light? (AdventureD)
6. 11:04 AM - Re: Re: 12v battery monitor with WiFi alerts? (Sebastien)
7. 04:13 PM - Re: URGENT REQUEST Transponder Test Failed...Troubleshooting Suggestions Please ()
8. 04:30 PM - Re: Multiple switches on the same light? (user9253)
9. 05:58 PM - Re: Multiple switches to the same light? (Jeff Luckey)
Message 1
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| Subject: | URGENT REQUEST Transponder Test Failed...Troubleshooting |
Suggestions Please
Sebastien. Very good information!!!
> If you were in a hangar, pull the aircraft outside to prevent
reflected signals from buggering up your data.
Good idea
>Lastly, when doing these tests make sure that the Dynon setup has the
auto ON/OFF mode disabled to ensure that you can turn everything on
standing still.
That was done
>The Dynon transponder gets its altitude information from the ADAHRS
unit. That means you need the full Dynon system turned on, not just the
transponder.
Yes all of the avionics equipment was operating
>Apparently you are getting your GPS information from a certified GPS,
which has to connect to the Dynon via ARINC-429 interface boxI
have dual ADAHRS, and GTN-650 providing GPS data.
I have the exact same setup.
>Any chance of a problem with the coax from the -261 to the antenna?
That is possible but the cable appears to be in good shape. I will
research how to test a coax cable.
The ADS and transponder are installed side by side so perhaps I can swap
the coax cables and do the test to see if the problem follows???
>Does the antenna have appropriate ground plain?
Yes both the transponder and ADS-B antennae have the appropriate sized
ground plain.
Thanks Kelly for the information
From: owner-aeroelectric-list-server@matronics.com
<owner-aeroelectric-list-server@matronics.com> On Behalf Of Sebastien
Sent: Tuesday, March 2, 2021 5:26 PM
Subject: Re: AeroElectric-List: URGENT REQUEST Transponder Test
Failed...Troubleshooting Suggestions Please
Bill either you are not reporting the problem correctly or your tech
isn't familiar with doing these tests on mode S transponders. The 90%
figure leads me to believe that the test you are failing is the
suppression test. If this is the case, here is the applicable section of
PART 43 Appendix F ATC Transponder Tests and Inspections:
(b) Suppression: When Classes 1B, 2A, 3A, and 4 Mode S transponders are
interrogated at a rate between 230 and 1,200 Mode 3/A interrogations per
second:
(2) Verify that the transponder replies to at least 90 percent of ATCRBS
interrogations when the amplitude of the P2 pulse is 9 dB less than the
P1 pulse. If the test is conducted with a radiated test signal, the
interrogation rate shall be 235 =C2=B15 interrogations per second unless
a higher rate has been approved for the test equipment used at that
location.
As you can see, the suppression test is a mode A test, not mode C or
mode S. If the AV-17 is showing a 100% reply rate with P2 set 9dB less
than P1, your transponder passes the suppression test and that's the end
of it. A failed suppression test could not have anything to do with your
transponder setup. If we want to assume for argument's sake that you are
indeed failing the suppression test and your tech is competent with both
the requirements and his equipment, then I would try a different
antenna, a different coax, and then ship the unit back to Dynon.
If you were in a hangar, pull the aircraft outside to prevent reflected
signals from buggering up your data. Lastly, when doing these tests make
sure that the Dynon setup has the auto ON/OFF mode disabled to ensure
that you can turn everything on standing still.
Regards,
Sebastien
On Tue, Mar 2, 2021 at 3:58 PM <billhuntersemail@gmail.com
<mailto:billhuntersemail@gmail.com> > wrote:
<mailto:billhuntersemail@gmail.com> >
The static test technician is coming back to the airpark tomorrow so can
someone PLEASE help me troubleshoot a failed test transponder? I also
posted this same request on the Dynon forum hoping to get a
troubleshooting
answer tonight.
I tried to get a pitot static test today and the system failed the
transponder Mode S interrogations received component of the test. He was
using the Tol-Instruments T-48 MODE S/ATCRBS TRANSPONDER RAMP TEST SET.
He
said that the test set was receiving between 65 to 100 percent of the
interrogations and the device reports the lowest number as the result
and
anything less than 90 percent is considered a fail so my system got a 65
percent.
After the fail I switched the antenna from the transponder to the ADS-B
antenna and the result was the same so it seems that the antenna was not
at
fault.
The technician had me switch it to Mode A and he used a different test
kit
called a AV-17 AVIONICS TESTER and the mode A and Mode C system worked
great
with 100 percent replies received however when he uses the T-48 MODE S
tester the same problem.
The transponder is the Dynon -261 unit.
The setup shows the following:
ON-LINE HW22.03 FW01.02 SW02.11
USA 91.227 COMPLIANT NO
GPS DATA (OFFLINE) GARMIN ADS-B/ADS-B+
PRESSURE ALTITUDE OK SKYVIEW
TAIL NUMBER shows my N-Number
TRANSPONDER HEX CODE A0088C
ADS-B IN FREQ (BOTH SV-ADSB-472)
TIS TRAFFIC is ON
What troubleshooting steps should I take now? How do I determine if it
is a
programming issue or cable or the unit???
He is coming back to the airport tomorrow so if it is something that I
can
reprogram of fix please let me know.
THANKS
Bill
-
Electric-List" rel="noreferrer"
target="_blank">http://www.matronics.com/Navigator?AeroElectric-List
FORUMS -
eferrer" target="_blank">http://forums.matronics.com
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errer" target="_blank">http://wiki.matronics.com
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-Matt Dralle, List Admin.
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Message 2
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| Subject: | Re: URGENT REQUEST Transponder Test Failed...Troubleshooting |
Su
billhuntersemail(at)GMAIL wrote:
> ... The ADS and transponder are installed side by side...
How close is "side by side"?
--------
John Bright, RV-6A, at FWF, O-360
Z-101 single batt dual alt SDS EM-5-F.
john_s_bright@yahoo.com, Newport News, Va
https://docs.google.com/document/d/1YOtPiA3AdUsQEYR4nodBESNAo21rxdnx4pFs7VxXfuI/edit?usp=sharing
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=500847#500847
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| Subject: | Re: 12v battery monitor with WiFi alerts? |
From: Ernest Christley <echristley@att.net>
You could switch to a LiFePo battery the next time it needs changing.=C2
- They have a very low self discharge rate, and they will accept a much l
arger recharge current.=C2- So, it could sit six months and start the car
without an issue, and then recharge in only a few minutes
......
That's true. But I probably should have been more careful with my
terminology...
When I said "self-discharge", what I should have called it was more of a
"parasitic discharge," from the car's electrical system. I haven't measured
it, but modern cars seem to have more than older ones.
There is a continuous, normal, current draw, small though it may be, to
maintain memories and run things like key fob receivers, security systems,
etc. If the car is driven regularly, that's really not a problem.
A battery disconnect would stop that, but it would also add a major
inconvenience in having to reset radio stations, seat positions, etc., each
time it was reconnected, and it would also lose some of the computer's
"driveability" information. So I discounted that idea.
And yes, there is the cost of the LiFePo battery.
I'm going to see if I can get the Deltran unit to work consistently, and
will report back on that.
Thanks again for the suggestions.
>
>
Message 4
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| Subject: | Re: 12v battery monitor with WiFi alerts? |
Have you considered asking your wife to take responsibility for keeping her
car in operating condition? Let her choose between either driving it enough
to keep the battery charged or using an external battery maintainer. Of
course, the possibility exists that she doesn't care enough about whether
her car starts to do anything about it. This may be your problem, not her
problem.
-- Art Z.
On Wed, Mar 3, 2021 at 9:46 AM Ronald Cox <flyboyron@gmail.com> wrote:
> From: Ernest Christley <echristley@att.net>
> You could switch to a LiFePo battery the next time it needs changing.=C2
> - They have a very low self discharge rate, and they will accept a much l
> arger recharge current.=C2- So, it could sit six months and start the car
> without an issue, and then recharge in only a few minutes
> ......
> That's true. But I probably should have been more careful with my
> terminology...
> When I said "self-discharge", what I should have called it was more of a
> "parasitic discharge," from the car's electrical system. I haven't measured
> it, but modern cars seem to have more than older ones.
> There is a continuous, normal, current draw, small though it may be, to
> maintain memories and run things like key fob receivers, security systems,
> etc. If the car is driven regularly, that's really not a problem.
> A battery disconnect would stop that, but it would also add a major
> inconvenience in having to reset radio stations, seat positions, etc., each
> time it was reconnected, and it would also lose some of the computer's
> "driveability" information. So I discounted that idea.
> And yes, there is the cost of the LiFePo battery.
>
> I'm going to see if I can get the Deltran unit to work consistently, and
> will report back on that.
>
> Thanks again for the suggestions.
>
>>
>>
--
https://CheerfulCurmudgeon.com/
*Friendship is like a stone. A stone has no value, but when you rub two
stones together properly, sparks of fire emerge. *
Rabbi Mordechai of Lechovitz
Message 5
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| Subject: | Multiple switches on the same light? |
Is there anything wrong with (i) wiring a Map Light to a switch with that name
on the panel so that the light it can simply be turned on and off, AND (ii) wiring
the same light to a dimmer circuit that controls some additional lights so
that they can all be dimmed at once? If only the Map Light switch were turned
on, the Map Light would just come on. If only the dimmer were turned on, the
Map Light would get brighter and dimmer with adjustments to the pot. If both
were turned on, what happens? I would assume the dimmer would just be ineffective.
I want to be able to turn the light on and off--full power, without dimming--and
be able to separately dim it with others. Can I do it the way I described?
Thanks!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=500850#500850
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| Subject: | Re: 12v battery monitor with WiFi alerts? |
Art I was thinking replace the car, the wife, or preferably both but Ron
has probably already considered and dismissed those options.
It does remind me of my last Cadillac which had an "away" mode. When
leaving town for a couple weeks there was a way to tell the car to go to
sleep which would drastically reduce the parasitic loads on the battery.
Perhaps Lexus has a similar option?
On Wed, Mar 3, 2021, 08:55 Art Zemon <art@zemon.name> wrote:
> Have you considered asking your wife to take responsibility for keeping
> her car in operating condition? Let her choose between either driving it
> enough to keep the battery charged or using an external battery maintainer.
> Of course, the possibility exists that she doesn't care enough about
> whether her car starts to do anything about it. This may be your problem,
> not her problem.
>
> -- Art Z.
>
>
> On Wed, Mar 3, 2021 at 9:46 AM Ronald Cox <flyboyron@gmail.com> wrote:
>
>> From: Ernest Christley <echristley@att.net>
>> You could switch to a LiFePo battery the next time it needs changing.=C2
>> - They have a very low self discharge rate, and they will accept a much l
>> arger recharge current.=C2- So, it could sit six months and start the car
>> without an issue, and then recharge in only a few minutes
>> ......
>> That's true. But I probably should have been more careful with my
>> terminology...
>> When I said "self-discharge", what I should have called it was more of a
>> "parasitic discharge," from the car's electrical system. I haven't measured
>> it, but modern cars seem to have more than older ones.
>> There is a continuous, normal, current draw, small though it may be, to
>> maintain memories and run things like key fob receivers, security systems,
>> etc. If the car is driven regularly, that's really not a problem.
>> A battery disconnect would stop that, but it would also add a major
>> inconvenience in having to reset radio stations, seat positions, etc., each
>> time it was reconnected, and it would also lose some of the computer's
>> "driveability" information. So I discounted that idea.
>> And yes, there is the cost of the LiFePo battery.
>>
>> I'm going to see if I can get the Deltran unit to work consistently, and
>> will report back on that.
>>
>> Thanks again for the suggestions.
>>
>>>
>>>
>
> --
> https://CheerfulCurmudgeon.com/
> *Friendship is like a stone. A stone has no value, but when you rub two
> stones together properly, sparks of fire emerge. *
> Rabbi Mordechai of Lechovitz
>
Message 7
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| Subject: | URGENT REQUEST Transponder Test Failed...Troubleshooting |
Suggestions Please
Hey everybodyyou can uncross your fingers and toes!!!
The transponder passed!!!
The only thing that I did different was to program the Skyview to get
its GPS data from the Skyview GPS as opposed to the GARMIN GTN-650 and I
pulled the CBs for the Garmin so that way the automotive style 10 amp
battery charger would keep the volts on the bus about 13.3
voltswith the Garmin up and running it draws a fair amount of
zaps and the voltage on the bus was more like 12.3 volts and Dynon Tech
Support said that 12.4 volts was the minimum they would like to see to
have the transponder work properly
Thanks again for your help!!!
From: owner-aeroelectric-list-server@matronics.com
<owner-aeroelectric-list-server@matronics.com> On Behalf Of Sebastien
Sent: Tuesday, March 2, 2021 5:26 PM
Subject: Re: AeroElectric-List: URGENT REQUEST Transponder Test
Failed...Troubleshooting Suggestions Please
Bill either you are not reporting the problem correctly or your tech
isn't familiar with doing these tests on mode S transponders. The 90%
figure leads me to believe that the test you are failing is the
suppression test. If this is the case, here is the applicable section of
PART 43 Appendix F ATC Transponder Tests and Inspections:
(b) Suppression: When Classes 1B, 2A, 3A, and 4 Mode S transponders are
interrogated at a rate between 230 and 1,200 Mode 3/A interrogations per
second:
(2) Verify that the transponder replies to at least 90 percent of ATCRBS
interrogations when the amplitude of the P2 pulse is 9 dB less than the
P1 pulse. If the test is conducted with a radiated test signal, the
interrogation rate shall be 235 =C2=B15 interrogations per second unless
a higher rate has been approved for the test equipment used at that
location.
As you can see, the suppression test is a mode A test, not mode C or
mode S. If the AV-17 is showing a 100% reply rate with P2 set 9dB less
than P1, your transponder passes the suppression test and that's the end
of it. A failed suppression test could not have anything to do with your
transponder setup. If we want to assume for argument's sake that you are
indeed failing the suppression test and your tech is competent with both
the requirements and his equipment, then I would try a different
antenna, a different coax, and then ship the unit back to Dynon.
If you were in a hangar, pull the aircraft outside to prevent reflected
signals from buggering up your data. Lastly, when doing these tests make
sure that the Dynon setup has the auto ON/OFF mode disabled to ensure
that you can turn everything on standing still.
Regards,
Sebastien
On Tue, Mar 2, 2021 at 3:58 PM <billhuntersemail@gmail.com
<mailto:billhuntersemail@gmail.com> > wrote:
<mailto:billhuntersemail@gmail.com> >
The static test technician is coming back to the airpark tomorrow so can
someone PLEASE help me troubleshoot a failed test transponder? I also
posted this same request on the Dynon forum hoping to get a
troubleshooting
answer tonight.
I tried to get a pitot static test today and the system failed the
transponder Mode S interrogations received component of the test. He was
using the Tol-Instruments T-48 MODE S/ATCRBS TRANSPONDER RAMP TEST SET.
He
said that the test set was receiving between 65 to 100 percent of the
interrogations and the device reports the lowest number as the result
and
anything less than 90 percent is considered a fail so my system got a 65
percent.
After the fail I switched the antenna from the transponder to the ADS-B
antenna and the result was the same so it seems that the antenna was not
at
fault.
The technician had me switch it to Mode A and he used a different test
kit
called a AV-17 AVIONICS TESTER and the mode A and Mode C system worked
great
with 100 percent replies received however when he uses the T-48 MODE S
tester the same problem.
The transponder is the Dynon -261 unit.
The setup shows the following:
ON-LINE HW22.03 FW01.02 SW02.11
USA 91.227 COMPLIANT NO
GPS DATA (OFFLINE) GARMIN ADS-B/ADS-B+
PRESSURE ALTITUDE OK SKYVIEW
TAIL NUMBER shows my N-Number
TRANSPONDER HEX CODE A0088C
ADS-B IN FREQ (BOTH SV-ADSB-472)
TIS TRAFFIC is ON
What troubleshooting steps should I take now? How do I determine if it
is a
programming issue or cable or the unit???
He is coming back to the airport tomorrow so if it is something that I
can
reprogram of fix please let me know.
THANKS
Bill
-
Electric-List" rel="noreferrer"
target="_blank">http://www.matronics.com/Navigator?AeroElectric-List
FORUMS -
eferrer" target="_blank">http://forums.matronics.com
WIKI -
errer" target="_blank">http://wiki.matronics.com
b Site -
-Matt Dralle, List Admin.
rel="noreferrer"
target="_blank">http://www.matronics.com/contribution
Message 8
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| Subject: | Re: Multiple switches on the same light? |
I think that you could accomplish your goal by using a diode to prevent the
full-bright circuit from interfering with the dimmer circuit. I can not be more
specific without knowing exactly how the circuits are wired.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=500853#500853
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| Subject: | Re: Multiple switches to the same light? |
Dan,
You will want to separate the power sources.=C2-=C2-
You could accomplish this with a SPDT on-off-on switch.=C2- The Center po
sition would be Off, the Up position (full bright) would be fed with full p
ower and the Down position (dimmer mode)=C2- would be fed from the dimmer
just like the other panel lights you want to dim.
The terminals on the switch would be as follows:=C2- top terminal - full
power (from lighting circuit)=C2- center terminal - feed to the map light
=C2- bottom terminal - dimmer output (in parallel with other panel lights
)
You could run into issues if the map light draws considerably more current
than the other panel lights.=C2- It might cause un-even dimming when the
map light is on the dimmer circuit.
Also, you have to be sure not to exceed the power output of your dimmer wit
h the addition of the map light.=C2- You would have to experiment a littl
e to see if it will work to your satisfaction.=C2-
-Jeff
On Tuesday, March 2, 2021, 08:10:13 PM PST, Dan <limadelta@gmail.com> w
rote:
Is there anything wrong with (i) wiring a Map Light to a switch with that
name on the panel so that the light it can simply be turned on and off, AND
(ii) wiring it to a dimmer circuit that controls some additional lights so
that they can all be dimmed at once?=C2- If only the Map Light switch we
re turned on, the Map Light would just come on.=C2- If only the dimmer we
re turned on, the Map Light would get brighter and dimmer with adjustments
to the pot.=C2- If both were turned on, what happens?=C2- I would assum
e the dimmer would just be ineffective.
I want to be able to turn the light on and off--full power--and be able to
separately dim it with others.=C2- Can I just do it the way I described?
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