Today's Message Index:
----------------------
1. 08:24 AM - Continuous Squelch Noise With SV-1000 Display On (William Hunter)
2. 08:41 AM - Re: Continuous Squelch Noise With SV-1000 Display On (Charlie England)
3. 08:51 AM - Re: Continuous Squelch Noise With SV-1000 Display On (Eric Page)
4. 12:53 PM - Re: Continuous Squelch Noise With SV-1000 Display On (Kelly McMullen)
5. 01:15 PM - Re: Continuous Squelch Noise With SV-1000 Display On (William Hunter)
6. 01:40 PM - Re: Continuous Squelch Noise With SV-1000 Display On (Gerald Farek)
7. 06:08 PM - Re: Z-13/8 inquiry (bcone1381)
Message 1
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| Subject: | Continuous Squelch Noise With SV-1000 Display On |
I am getting a continuous squelch type noise when I have one of the Dynon
screens receiving ships power.
The Avionics system is two Skyview SV1000 displays, a Dynon radio, a Garmin
GTN - 650, and an SL-15 audio panel.
The squelch noise is continuous regardless if the engine is running or not
so I have eliminated any noise from the alternator system. And I have also
disconnected any battery chargers so that the system is running only on
airplane battery. I also turned off all shop lights
When I first fired up the system it sounded like the squelch was activated
on a radio meaning the continuous White Noise sound was in the headsets and/
or the overhead speaker however when somebody would talk on the radio the
white noise would go away and the transmission would come out completely
clear. The nose is loud and is exactly the same sound the radios make when
the squelch switch is in the squelch position.so I thought it was the
squelch button/switch.
I turned off the Dynon radio and I also turned off the Garmin and the sound
continued so those sources of either noise and or squelch were eliminated.
I began pulling all of the circuit breakers out one at a time and the sound
continued until I pulled out the circuit breaker that powers the left side
Dynon screen. The squelch noise stopped even though the backup battery was
powering the display.
Push the circuit breaker in and the noise started again...pull out the CB
and the noise stops and the screen stays on using its backup battery power.
So I have confirmed that the only source of noise in the headsets is when
the circuit breaker for the left screen is pushed in.
Someone on the Dynon forum suggested that it could be a ground loop. The
airplane is a composite and all of the ground wires from the instrument
panel go to one copper bus bar near the instrument panel and then from the
ground bus I have a 12 AWG wire going to the battery negative cable.
Does anybody have any recommendations for troubleshooting in addition to
what I have done thus far?
AS ALWAYS.Thanks for any feedback, experience, and or suggestions!
..
Cheers!!!
Bill Hunter
Message 2
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| Subject: | Re: Continuous Squelch Noise With SV-1000 Display |
On
On 2/5/2018 10:22 AM, William Hunter wrote:
>
> I am getting a continuous squelch type noise when I have one of the
> Dynon screens receiving ships power.
>
> The Avionics system is two Skyview SV1000 displays, a Dynon radio, a
> Garmin GTN - 650, and an SL-15 audio panel.
>
> The squelch noise is continuous regardless if the engine is running or
> not so I have eliminated any noise from the alternator system. And I
> have also disconnected any battery chargers so that the system is
> running only on airplane battery. I also turned off all shop lights
>
> When I first fired up the system it sounded like the squelch was
> activated on a radio meaning the continuous White Noise sound was in
> the headsets and/ or the overhead speaker however when somebody would
> talk on the radio the white noise would go away and the transmission
> would come out completely clear. The nose is loud and is exactly the
> same sound the radios make when the squelch switch is in the squelch
> positionso I thought it was the squelch button/switch.
>
> I turned off the Dynon radio and I also turned off the Garmin and the
> sound continued so those sources of either noise and or squelch were
> eliminated.
>
> I began pulling all of the circuit breakers out one at a time and the
> sound continued until I pulled out the circuit breaker that powers the
> left side Dynon screen. The squelch noise stopped even though the
> backup battery was powering the display.
>
> Push the circuit breaker in and the noise started again...pull out the
> CB and the noise stops and the screen stays on using its backup
> battery power.
>
> So I have confirmed that the only source of noise in the headsets is
> when the circuit breaker for the left screen is pushed in.
>
> Someone on the Dynon forum suggested that it could be a ground loop.
> The airplane is a composite and all of the ground wires from the
> instrument panel go to one copper bus bar near the instrument panel
> and then from the ground bus I have a 12 AWG wire going to the battery
> negative cable.
>
> Does anybody have any recommendations for troubleshooting in addition
> to what I have done thus far?
>
> AS ALWAYSThanks for any feedback, experience, and or suggestions!
>
> ..
>
> Cheers!!!
>
> Bill Hunter
>
You said 'left side Dynon'. Do you have a pair? If so, can you swap
units left/right & repeat the test? If the noise follows the box, then
there's likely a defect in the box itself (probably has a 'switcher'
power supply inside that's generating the white noise). If the internal
backup battery is something lower than 12V, like a 4.5V or 6V battery,
that would raise the odds that it's an internal switching type power
supply generating the noise.
If the noise doesn't follow the box, then I'd start looking at wiring.
Charlie
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Message 3
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| Subject: | Re: Continuous Squelch Noise With SV-1000 Display On |
One thing you might try, if the Dynon boxes are tray mounted, is to swap the
boxes. If the problem follows the box, then it=99s internal to the l
eft box. If not, it=99s external.
Eric
> On Feb 5, 2018, at 8:22 AM, William Hunter <billhuntersemail@gmail.com> wr
ote:
>
> I am getting a continuous squelch type noise when I have one of the Dynon s
creens receiving ships power.
Message 4
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| Subject: | Re: Continuous Squelch Noise With SV-1000 Display |
On
I strongly suggest calling Dynon directly. Their tech support is first
rate. Tech support best deals with specific problems over the phone,
while their forum is better for general problems.
The back up battery is 12 V, 12.25 when fully charged.
I have same system, except SL30 and GTN 650, no Dynon radio, and PS Eng
intercom/audio panel.
On 2/5/2018 9:45 AM, Charlie England wrote:
> On 2/5/2018 10:22 AM, William Hunter wrote:
>>
>> I am getting a continuous squelch type noise when I have one of the
>> Dynon screens receiving ships power.
>>
>> The Avionics system is two Skyview SV1000 displays, a Dynon radio, a
>> Garmin GTN - 650, and an SL-15 audio panel.
>>
>> The squelch noise is continuous regardless if the engine is running or
>> not so I have eliminated any noise from the alternator system. And I
>> have also disconnected any battery chargers so that the system is
>> running only on airplane battery. I also turned off all shop lights
> You said 'left side Dynon'. Do you have a pair? If so, can you swap
> units left/right & repeat the test? If the noise follows the box, then
> there's likely a defect in the box itself (probably has a 'switcher'
> power supply inside that's generating the white noise). If the internal
> backup battery is something lower than 12V, like a 4.5V or 6V battery,
> that would raise the odds that it's an internal switching type power
> supply generating the noise.
>
> If the noise doesn't follow the box, then I'd start looking at wiring.
>
> Charlie
>
> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=icon>
> Virus-free. www.avast.com
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>
>
> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
Message 5
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| Subject: | Re: Continuous Squelch Noise With SV-1000 Display On |
yup... I called a Dynon tech support.
He was stumped as well for a while and then after we did some
troubleshooting he remembered a possible fix and then he was able to walk
me through an internal squelch setting that is in one of the setup pages. I
think it has solved the problem but I will wait on that definitive answer
until I go and fly again but I think we got it!
Thanks,
Bill Hunter
On Feb 5, 2018 12:58 PM, "Kelly McMullen" <kellym@aviating.com> wrote:
> kellym@aviating.com>
>
> I strongly suggest calling Dynon directly. Their tech support is first
> rate. Tech support best deals with specific problems over the phone, while
> their forum is better for general problems.
> The back up battery is 12 V, 12.25 when fully charged.
> I have same system, except SL30 and GTN 650, no Dynon radio, and PS Eng
> intercom/audio panel.
>
> On 2/5/2018 9:45 AM, Charlie England wrote:
>
>> On 2/5/2018 10:22 AM, William Hunter wrote:
>>
>>>
>>> I am getting a continuous squelch type noise when I have one of the
>>> Dynon screens receiving ships power.
>>>
>>> The Avionics system is two Skyview SV1000 displays, a Dynon radio, a
>>> Garmin GTN - 650, and an SL-15 audio panel.
>>>
>>> The squelch noise is continuous regardless if the engine is running or
>>> not so I have eliminated any noise from the alternator system. And I have
>>> also disconnected any battery chargers so that the system is running only
>>> on airplane battery. I also turned off all shop lights
>>>
>>
> You said 'left side Dynon'. Do you have a pair? If so, can you swap units
>> left/right & repeat the test? If the noise follows the box, then there's
>> likely a defect in the box itself (probably has a 'switcher' power supply
>> inside that's generating the white noise). If the internal backup battery
>> is something lower than 12V, like a 4.5V or 6V battery, that would raise
>> the odds that it's an internal switching type power supply generating the
>> noise.
>>
>> If the noise doesn't follow the box, then I'd start looking at wiring.
>>
>> Charlie
>>
>> <https://www.avast.com/sig-email?utm_medium=email&utm_source
>> =link&utm_campaign=sig-email&utm_content=emailclient&utm_term=icon>
>> Virus-free. www.avast.com <https://www.avast.com/sig-ema
>> il?utm_medium=email&utm_source=link&utm_campaign=sig-email&
>> utm_content=emailclient&utm_term=link>
>>
>> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
>>
>
>
Message 6
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| Subject: | Re: Continuous Squelch Noise With SV-1000 Display On |
What was the detailed answer?
Sent from my iPhone
> On Feb 5, 2018, at 3:14 PM, William Hunter <billhuntersemail@gmail.com> wr
ote:
>
> yup... I called a Dynon tech support.
>
>
> He was stumped as well for a while and then after we did some troubleshoot
ing he remembered a possible fix and then he was able to walk me through an i
nternal squelch setting that is in one of the setup pages. I think it has so
lved the problem but I will wait on that definitive answer until I go and fl
y again but I think we got it!
>
> Thanks,
>
> Bill Hunter
>
>> On Feb 5, 2018 12:58 PM, "Kelly McMullen" <kellym@aviating.com> wrote:
com>
>>
>> I strongly suggest calling Dynon directly. Their tech support is first ra
te. Tech support best deals with specific problems over the phone, while the
ir forum is better for general problems.
>> The back up battery is 12 V, 12.25 when fully charged.
>> I have same system, except SL30 and GTN 650, no Dynon radio, and PS Eng i
ntercom/audio panel.
>>
>>> On 2/5/2018 9:45 AM, Charlie England wrote:
>>>> On 2/5/2018 10:22 AM, William Hunter wrote:
>>>>
>>>> I am getting a continuous squelch type noise when I have one of the Dyn
on screens receiving ships power.
>>>>
>>>> The Avionics system is two Skyview SV1000 displays, a Dynon radio, a Ga
rmin GTN - 650, and an SL-15 audio panel.
>>>>
>>>> The squelch noise is continuous regardless if the engine is running or n
ot so I have eliminated any noise from the alternator system. And I have als
o disconnected any battery chargers so that the system is running only on ai
rplane battery. I also turned off all shop lights
>>
>>> You said 'left side Dynon'. Do you have a pair? If so, can you swap unit
s left/right & repeat the test? If the noise follows the box, then there's l
ikely a defect in the box itself (probably has a 'switcher' power supply ins
ide that's generating the white noise). If the internal backup battery is so
mething lower than 12V, like a 4.5V or 6V battery, that would raise the odds
that it's an internal switching type power supply generating the noise.
>>>
>>> If the noise doesn't follow the box, then I'd start looking at wiring.
>>>
>>> Charlie
>>>
>>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&ut
m_campaign=sig-email&utm_content=emailclient&utm_term=icon> Vi
rus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&
utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_ter
m=link>
>>>
>>> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
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Message 7
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| Subject: | Re: Z-13/8 inquiry |
More Questions.
I took a screen shot of a small part of the Z-10/8 wiring diagram. Focus with
me on the bus tie between the Main Power Bus and the Endurance Bus. The Endurance
Bus gets its primary feed from the Main Power bus thru the Diode, and its
typical of the diagrams in AEC.
This circuit is unprotected....no fuse, no circuit breaker, no current limiter,
no fuse link. I guess thats ok., but seems abnormal. Can I have some feedback?
I argue with myself that its because we want a reliable E-bus feed. Then I see
that the diagrams in AEC fuse the Alternate Feed from the Hot Battery Bus.
--------
Brooks Cone
Bearhawk Patrol Kit Build
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