RE: I think they are, but it is still unclear.

Posted by Garg0yle (A) on August 28, 2015 at 19:04:18

In Reply to: I think they are, but it is still unclear. posted by 91derlust on August 28, 2015 at 18:28:51:

I think it just means that the "True RMS" reading is only valid in that range. (5% to 100% of the range selected)

Your meter is accurate to 1% of 0.1mV (0.001mV)
However the last digit is accurate to 5 counts, so 0.001mV might actually read 0.005mV due to a resolution limit in the analog to digital converter for the display.

That is probably why the true RMS readings are off a little bit when measuring under 50mV.

Hope that clears things up.

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Follow Ups Full Thread

Topic - Keysight/Agilent U1241B - amp output noise measurement - 91derlust 03:36:43 08/26/15 (13)

RE: At least they are honest - Russ57 15:50:51 08/27/15 (3)

I think they are, but it is still unclear. - 91derlust 18:28:51 08/28/15 (2)

RE: I think they are, but it is still unclear. - Garg0yle 19:04:18 08/28/15 (1)

RE: I think they are, but it is still unclear. - 91derlust 13:58:41 08/29/15 (0)

RE: Keysight/Agilent U1241B - amp output noise measurement - 91derlust 00:27:24 08/27/15 (3)

Keysight/Agilent U1241B - Brochure states 0.1 mV to 1000 V - 91derlust 00:52:01 08/27/15 (2)

RE: Keysight/Agilent U1241B - Brochure states 0.1 mV to 1000 V - Garg0yle 09:10:50 08/27/15 (1)

RE: Keysight/Agilent U1241B - Brochure states 0.1 mV to 1000 V - 91derlust 18:22:13 08/28/15 (0)

RE: Keysight/Agilent U1241B - amp output noise measurement - Paul Joppa 17:04:04 08/26/15 (1)

RE: Keysight/Agilent U1241B - amp output noise measurement - Triode_Kingdom 12:57:18 08/27/15 (0)

RE: Keysight/Agilent U1241B - amp output noise measurement - Caucasian Blackplate 14:36:49 08/26/15 (0)

RE: Keysight/Agilent U1241B - amp output noise measurement - Chip647 11:12:43 08/26/15 (0)

RE: Keysight/Agilent U1241B - amp output noise measurement - Triode_Kingdom 11:01:12 08/26/15 (0)

Follow Ups

RE: I think they are, but it is still unclear. - Garg0yle 19:04:18 08/28/15 (1)

RE: I think they are, but it is still unclear. - 91derlust 13:58:41 08/29/15 (0)

RE: I think they are, but it is still unclear.

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