Infoseite // Re: Cannon xm2 / humming noise when external Micro



Frage von Kai:


Hi All,

Interviews with a Canon while I recorded xm2.
I connected an external Micro (lavalier).
Now the problem: when I run the camera with battery, I have a very good sound. As soon as I let them run over power, however, I have a total drone on the headphones.
Does anyone know this problem and a solution for this?

Thanks
Kai


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Antwort von burn:

(User Above) wrote:
: Hi everyone,
:
Am here to record interviews with a Canon xm2.
: I connected an external Micro (lavalier).
: Now the problem: when I run the camera with battery, I have a very
: Good sound. As soon as I let them run over power, however, I have a
Means full-hum in the headphones.
: Does anyone know this problem and a solution for this?
:
: Thanks
Kai


the sound quality of the XM1 and xm2 leaves much to be desired way or the other very much. I then switched to DAT tape and have been working with a flap.


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Antwort von Lothar:

Hello!

This has nothing to do with the camera. These are the 50 Hz from the mains. The network device that you use, has no built-in rectifier. Look at yourself, at times after a stabilisietem power supply. You can recognize it because that is the character types in the name of output 2 is not long strokes. Ie direct current, which you and the Bruach synonymous from the Battery and the Battery kommt.Die Wellenlienien mean alternating current, a stroke and a broken line on unfiltered
AC.

Gruss
Lothar


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Antwort von Kai:

-AT-Dilbert, Lothar & Observer
I only came back today to look into the forum.
Thanks for the solutions.

Get the power supply can probably check.
(User Above) wrote:
:
: Hi Kai,
:
What Lothar has since written about DC and AC voltage you should immediately re -
: Forget it.
:
:-AT-observers,
: A hum loop is only present when 2 different connected devices
: Are grounded. It would then have to wharves in the case even without the power supply on XM2
Be: to hear speakers of the computer. The power supply of the XM2 is not grounded,
: Can not therefore synonymous s.der hum loop be to blame. As the hum, but only
Hear is when the AC adapter is plugged in, I guess that the screening
(Capacitor) in the power supply is not in order.
:
: So Kai, you should check times, this power supply can, before you or your Cam
: So damaging.
:
: Greetings
:
: Dilbert




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Antwort von Dilbert:

Hello Kai,

Lothar has since written about what DC and AC voltage, you should immediately forgotten.

-AT-observers,
one loop hum is only present when 2 different connected devices are grounded. It would then have to wharves in the case even without the power adapter XM2 be heard s.Lautsprecher of the computer. The power supply of the XM2 is not grounded, can therefore not synonymous s.der hum loop be to blame. Since the drone is heard only when the AC adapter is plugged in, I guess that the screening (capacitor) in the power supply is not in order.

So Kai, you should check times, this power supply can be before you at your cam yet so corrupt.

Greeting

Dilbert



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Antwort von Der Beobachter:

(User Above) wrote:
: Hi!
:
: This has nothing to do with the camera. These are the 50 Hz from the mains. That
: Network device that you use, has no built-in rectifier. Look out times
: Stabilisietem around for a power supply. You can recognize it because that on the
: Are types of characters in the name of output 2 is not long strokes. That
: Ie direct current, which you and the Bruach synonymous from the Battery and the Battery
: Kommt.Die Wellenlienien mean alternating current, a stroke and a broken
: Line on unfiltered
: AC.
:
: Greeting
Lothar


As one tries to be a Anungsloser seeking help with incorrect answers
to confuse completely.
There are no unfiltered alternating current.
Now to Lösug the problem:
1. Are there other devices with a camera connected? (Ground loop)
then disconnect the connection sequence, especially community antenna cable.
2. In the cable from the power supply to a capacitor Camera () 1000uf/15Volt
paralle to turn + / Eight -.

mfg observers


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Antwort von Ela-Luca:

Hello Kai,

you've already figured out what it really lies with the hum? For I have the same problem with my Panasonic NV GS 500th So what Doofes ...
My external s.The Camera Micro is connected (without any amplifiers or self-generated electricity can be a problem?) And when I affixes to the power supply, it totally buzzing!

Regards
Jennifer

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Antwort von DjDino (Toth Dominik):

As a rule, come with camcorders Schaltnetzteile http://www.conrad.de/script/elko_4700_16v.sap
oder aber der Einsatz of ausdrücklich gekennzeichneten "stabilisierten" Netzteilen with passender Polarität,Stromstärke(mA) and Spannung(V) (!!!)
Da gibt es z.b. bei CONRAD gute stabilisierte Universalnetzteile with unzähligen Adaptersteckern (einer davon past garantiert in den Camcorders)
Eine
ground loop
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Antwort von DjDino (Toth Dominik):

"Ela-Luca" wrote: And if I affixes to the power supply, it totally buzzing!
The problem there is the additional stabilization and quality of screening decreases with higher loss rates, ie, if the camcorder power supply during operation onehin pretty auslastet get the Microphone not as synonymous screened more tension and cheers - it hums.

In this case, synonymous with you, and therefore, it is actually MUCH KAI good a strainer-Elko directly to the power supply to the microphone alongside schalten.Die best screening is always possible to directly s.Verbraucher.Je sufficient power to the microphone as most probably a 3 -6Volt-Elko, 470-da da 1000uF should reach as a micro power eh stop barely zieht.Ist only question where the electrolytic capacitor to be housed, with luck, he past into the microphone housing, otherwise lead cable stop and then mounted to the outside somehow and perhaps then cover up with black paint marker;)

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Antwort von Ela-Luca:

Ah, glad to still get answers. Thank you!

So again in summary: If I now want to buy an external microphone (for my Panasonic 500), which I should note here?
Will I have any with any external microphones, the hum or there are already special in which I would not install Elko more?

The thing with the rectifier then votes (at least in my case), right?
"Lars" wrote: Hello!
The network device that you use, has no built-in rectifier. Look at yourself, at times after a stabilisietem power supply. Gruss
Lothar

In the details of my power supply is available including: DC output 7.9 V, 1.4 A.

It's a pretty complex problem determination and above all with the elimination in this case: - /.

Danke schon mal and greeting
Jennifer

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