From: Joel Koltner on
Slightly off-topic, but... does anyone know of a multimeter that can read out
in dBm and lets you specify the reference impedance?

The only multimeter that I'm aware of that does this (but I haven't looked
that much yet) is a Tektronix TX3, but its reference impedance is forever set
at 600ohms (audio work), whereas usually I'm after 50ohms as the reference.
Same with the analog meters I've seen that had a dBm scale.

I do realize that the difference between 50ohms and 600ohm reference
impedances is just an offset of 10.8dB, I'm just lazy enough that I don't want
to have to perform the addition. :-)

Thanks,
---Joel

From: David L. Jones on
Joel Koltner wrote:
> Slightly off-topic, but... does anyone know of a multimeter that can
> read out in dBm and lets you specify the reference impedance?
>
> The only multimeter that I'm aware of that does this (but I haven't
> looked that much yet) is a Tektronix TX3, but its reference impedance
> is forever set at 600ohms (audio work), whereas usually I'm after
> 50ohms as the reference. Same with the analog meters I've seen that
> had a dBm scale.
> I do realize that the difference between 50ohms and 600ohm reference
> impedances is just an offset of 10.8dB, I'm just lazy enough that I
> don't want to have to perform the addition. :-)
>
> Thanks,
> ---Joel

Yes, the Agilent U1253A or U1252A:
http://www.eevblog.com/2010/01/24/eevblog-56-agilent-u1253a-oled-multimeter-review-teardown/

Dave.

--
---------------------------------------------
Check out my Electronics Engineering Video Blog & Podcast:
http://www.eevblog.com


From: Joel Koltner on
"David L. Jones" <altzone(a)gmail.com> wrote in message
news:gA1an.4966$4N4.536(a)newsfe24.iad...
> Yes, the Agilent U1253A or U1252A:

Thanks Dave, I'll check it out.

---Joel

From: D from BC on
In article <p7qgm598r4tjkffr4in0n2na963iknvsir(a)4ax.com>,
jjlarkin(a)highNOTlandTHIStechnologyPART.com says...
>
> On Tue, 02 Feb 2010 08:36:38 -0500, PeterD <peter2(a)hipson.net> wrote:
>
> >On Mon, 1 Feb 2010 23:54:20 -0800, D from BC <myrealaddress(a)comic.com>
> >wrote:
> >
> >>The UT804 bench multimeter..
> >>It's got Farrari racing red!
> >>Ebay item 270516514042
> >>http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=270516514042
> >>
> >>But it's $275 with free shipping off Ebay.. :( mmmmmm
> >>
> >>imo it's got a beautiful front panel design including the display.
> >>
> >>I might buy it.
> >
> >From Hong Kong? A cheap chinese knockoff? Buying something like that
> >takes guts!
>
>
> Hey, the Keithley 2100 is a cheap Chinese knockoff!
>
> John


I spotted a Keithley 2000 bench multimeter 6.5digit on ebay selling for
$850US.
For general use, I suspect this is not cheap.


From: D from BC on
In article <shagm59potcbam9vt83o3hr29o26f4b2ba(a)4ax.com>, peter2
@hipson.net says...
>
> On Mon, 1 Feb 2010 23:54:20 -0800, D from BC <myrealaddress(a)comic.com>
> wrote:
>
> >The UT804 bench multimeter..
> >It's got Farrari racing red!
> >Ebay item 270516514042
> >http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=270516514042
> >
> >But it's $275 with free shipping off Ebay.. :( mmmmmm
> >
> >imo it's got a beautiful front panel design including the display.
> >
> >I might buy it.
>
> From Hong Kong? A cheap chinese knockoff? Buying something like that
> takes guts!


Now I'm scared to buy the UT804. :(
My 2nd choice (I'll admit I do pick by aesthetics first, specs 2nd.)
is the Mastech MS8050. This also on ebay.
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=290393169696

I just don't like rotary switches and this design doesn't have one like
the UT804,
The MS8050 has a serious tech looking front panel that I like.
I say that cause there are bench multimeter designs out there that
remind me of kids toys.
Example:
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=320426191848
Looks like a toy!


--
D from BC
British Columbia
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