Re: RF Voltmeter?
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Bob Albert
I have wanted an rf
millivoltmeter for some time.? I was using my HP410B which is fine
except it won't measure down to the millivolts. Then
I realized that my HP54542A oscilloscope has great bandwidth and
sensitivity down to 5 mV per division.? The probe situation presents a
problem but if I'm willing to settle for 50 mV per division I can use a
10:1 probe.? Still pretty good, and useful in many situations.? A 10 mV
rms signal (10,000 uV) will show as 28 mV p-p, about 1/2 division.? That
won't show at all on the 410B. On Thursday, October 12, 2017 10:45 AM, "David Wise david_wise@... [hp_agilent_equipment]" wrote: Apples and Oranges.? The Boonton 92 is a specialized RF Millivoltmeter.? The HP 410 is a general-purpose VTVM whose AC probe works at UHF.
“Not quite as sensitive” – yeah, by three orders of magnitude!
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Dave
? From: hp_agilent_equipment@... [mailto:hp_agilent_equipment@...]
Sent: Thursday, October 12, 2017 10:36 AM To: hp_agilent_equipment@... Subject: Re: [hp_agilent_equipment] RF Voltmeter? ?
Michael,? ?
I think you are right. From the spec, the Boonton 92 seems has better sensitivity than HP410C, I don't have neither Boonton 92 nor HP410C so I can't comment on which one is actually better. Instead I have a Boonton 91 and a HP410B, they
use different diode probes, Boonton has solid state, HP has tube, both 91 and 410B are quite stable and has good consistence, their frequency range is about the same, up to 1GHz, my Boonton 91 is off a lot at the 1mV range, it could be caused by some leaking
caps. The HP410B's lowest range is 1V, not quite as sensitive as the Boonton.
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Henry
The Boonton 93 is a True RMS Voltmeter, usable to 20 MHz. Maybe he meant the model 92?
-----Original Message----- >From: "xhfeng2002@... [hp_agilent_equipment]" <hp_agilent_equipment@...>
>Sent: Oct 12, 2017 11:24 AM >To: hp_agilent_equipment@... >Subject: Re: [hp_agilent_equipment] RF Voltmeter? > >Is Boonton 93 more like HP3400, HP3403? Michael A. Terrell
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