Just getting some time to measure the PCM-M10. Here are my findings.
I put the PCM-M10 (hereafter "M10") in record-pause for tests, to energize
the PIP circuit.
I don't keep an resistors around, so was unable to do that test. However, =
I
did take measurements when loaded with a stereo pair of Shure WL-183s.
To take measurements I used a minijack Y-adapter and male-to-male mini to
provide accessible contacts. I applied the multimeter leads to tip/sleeve
and ring/sleeve. Tip/Ring variance was within 1/100th unit.
Unloaded: 2.96v 0.62mA
Loaded: 2.50v 0.62mA (load is Shure WL-183 microphone pair)
I wonder how this fares for Klas's mics?
-jeremiah
On Tue, Mar 30, 2010 at 2:08 PM, nick_felmicamps <>wro=
te:
>
>
>
>
> Hi Jeremiah,
>
> Thank you for offering to take some PIP measurements, they will be of gre=
at
> interest to Klas, Rob and myself. The details are all below from a previo=
us
> post:
>
> The measurements we need are taken between the sleeve of the 3.5 mm
> microphone socket and either the ring or the tip (but not both together).
> The measurements must of course be taken with Plug-in Power switched on a=
nd
> without a microphone connected, the recorder will need to be in a record
> mode and paused and it would be sensible to turn the record level complet=
ely
> down. We need these four results:
>
> 1. Maximum voltage available (meter switched to volts) and connected
> between sleeve and tip or ring (typically 2-4 volts)
> 2. Maximum current available (meter set to mA or uA) and connected betwee=
n
> sleeve and tip or ring (typically 0.3-1.3 mA)
> 3. Voltage across a known resistor (ideally around 1000 ohm) connected
> between sleeve and tip or ring
> 4. Value of that resistor in ohms
>
> For those without a suitable resistor to hand measurements 3 and 4 are
> not essential but will be useful, particularly in determining if the
> device uses a constant current supply.
>
> Please do not undertake if you have any concerns for your or your
> equipment's safety.
>
> The results to date are published here:
>
>
> http://spreadsheets.google.com/pub?key=3DtT8j52wDyIkmA47A_Y3Jfjg&single=
=3Dtrue&gid=3D0&output=3Dhtml
>
> Nick
>
> --- In <naturerecordists%40yahoogroups.co=
m>,
> Jeremiah Moore <> wrote:
> >
> > I own a Sony PCM-M10 and am very interested in low-noise portable kit f=
or
> > it. (and hence in your offering, Klas!)
> >
> > Happy to test the PIP voltage if anyone can provide a methodology. (I
> > assume the PIP circuit must be loaded for the measurement to be valid;
> what
> > to load it with?)
> >
> > I have at my easy disposal:
> > - radio shack digital volt-ohm meter
> > - Shure WL-183 pair wired for minijack / PIP
> > - Sanken COS-11 pair wired for minijack / PIP
> >
> >
> > -jeremiah
> >
> >
> >
> > On Sun, Mar 28, 2010 at 9:31 PM, Rob Danielson <> wrote:
> >
> > >
> > >
> > > At 11:24 PM +0200 3/28/10, Klas Strandberg wrote:
> > >
> > > >Rob, I would like to know if the D50 provides enough PIP voltage.
> > > >
> > > >Considering that there are now really good microphones running on
> > > >PIP, I think it is relevant to mention if these mic=B4s cannot be us=
ed
> > > >with the D50.
> > >
> > > Hi Klas--
> > > I agree, but if the performance is significantly
> > > compromised running on PIP, I like your idea of
> > > using a simple battery box.
> > >
> > > >
> > > >For example - to lower the self noise of EM23, I have put two FET's
> > > >in parallel for the ones using Olympus and Zoom. But can this versio=
n
> > > >of EM23 be used with the D50? Other recorders?
> > >
> > > I believe the Sony M10 and D50 have more PIP
> > > voltage than the very low voltage/current Hi-MD
> > > units you accommodated with the parallel FET's.
> > > I don't own one of the new Sony's and can't
> > > measure it for you, but there should be several
> > > folks like Jerry who I'm sure have tried their
> > > EM23's on one the below top-performing hand-held
> > > recorders and can report to you:
> > >
> > > Sony M10,
> > > Sony D50
> > > Marantz PMD620
> > >
> > > I'm anxious for someone to try out a pair of your
> > > "Clip Ons" on one of the above recorders. I think
> > > Mike Rooke owns a D50 and he lives in your part
> > > of the world. Rob D.
> > >
> > > >
> > > >This was no problem a couple of years ago, when no mikes used more
> > > >than 0,25 mA.
> > > >But now it might be.
> > > >
> > > >I know that we dealt with this before, but the data that was given a=
t
> > > >that time didn't make sense to me.
> > > >
> > > >Klas.
> > >
> > > --
> > >
> > >
> > >
> >
> >
> >
> > --
> > ----------------------------------------------------------
> > jeremiah moore | SOUND |
> > http://www.jeremiahmoore.com/
> >
> >
> >
>
>
>
--
-----------------------------------------------------------
jeremiah moore | SOUND |
http://www.jeremiahmoore.com/
"While a picture is worth a thousand words, a
sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause
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