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From: Joel Koltner on 2 Feb 2010 13:40 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 2 Feb 2010 17:22 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 2 Feb 2010 18:02 "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 2 Feb 2010 20:21 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 2 Feb 2010 20:31
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 |