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| Keysight's new 34465A (6.5 digit) and 34470A (7.5 digit) bench multimeters |
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| bson:
--- Quote from: carl_lab on August 17, 2016, 08:36:21 pm --- --- Quote from: HighVoltage on March 16, 2015, 08:28:59 pm ---Today my Keysight 34470A arrived... --- End quote --- Same "axis numbering" problem on my brandnew 34465A: 2.5 , 2.5000 , 2.5001 - WTF? :palm: Isn't there enough place for: 2.49995 , 2.50000 , 2.50005 --- End quote --- It's actually... 2.500 10 2.500 05 2.500 00 But, yeah. Agreed on the :palm: for rounding and truncating axis labels in the first place. You're not the first to trip over this! |
| carl_lab:
--- Quote from: bson on August 18, 2016, 02:53:37 am --- --- Quote from: carl_lab on August 17, 2016, 08:36:21 pm --- --- Quote from: HighVoltage on March 16, 2015, 08:28:59 pm ---Today my Keysight 34470A arrived... --- End quote --- Same "axis numbering" problem on my brandnew 34465A: 2.5 , 2.5000 , 2.5001 - WTF? :palm: Isn't there enough place for: 2.49995 , 2.50000 , 2.50005 --- End quote --- It's actually... 2.500 10 2.500 05 2.500 00 But, yeah. Agreed on the :palm: for rounding and truncating axis labels in the first place. You're not the first to trip over this! --- End quote --- Yes, you're right. And it shows, keysight cannot even round correctly, they just truncated the values... |O That's not what I expect, when I spend $1500 or more... Is anybody here, who has a good contact to Keysight/Agilent/HP, who could ask for solving this bug? BTW: How can I store a screenshot of the instrument's display? |
| Andreas:
--- Quote from: carl_lab on August 19, 2016, 06:56:06 am --- Yes, you're right. And it shows, keysight cannot even round correctly, they just truncated the values... |O --- End quote --- Shure? Most probably their math package uses "round to nearest even" to avoid propagation of rounding errors e.g. in statistics mode. With best regards Andreas |
| HighVoltage:
--- Quote from: carl_lab on August 19, 2016, 06:56:06 am ---Is anybody here, who has a good contact to Keysight/Agilent/HP, who could ask for solving this bug? --- End quote --- I think this one has made it in to the requested changes for future FW updates. Also, I would wanted to have the StdDv shown in engineering notation or proper units and not so many zeros. Like the 34410A / 34411A has it shown. 5.67 uV on the 43410A instead of 0.000,005 V Hopefully we will see this in a future update as well. [/quote] --- Quote ---BTW: How can I store a screenshot of the instrument's display? --- End quote --- You can save it to a screenshot or use Benchvue or over the LXI web interface. It is pretty easy and works well. |
| carl_lab:
--- Quote from: Andreas on August 19, 2016, 07:06:35 am --- --- Quote from: carl_lab on August 19, 2016, 06:56:06 am --- Yes, you're right. And it shows, keysight cannot even round correctly, they just truncated the values... |O --- End quote --- Shure? --- End quote --- No, maybe "round to nearest even" is used, you are right, but... --- Quote from: Andreas on August 19, 2016, 07:06:35 am ---Most probably their math package uses "round to nearest even" to avoid propagation of rounding errors e.g. in statistics mode. --- End quote --- ...on axis numbering, same result as shown in screenshot (2.5 , 2.5000 , 2.5001 is nonsense). --- Quote from: HighVoltage on August 19, 2016, 08:19:11 am ---...I would wanted to have the StdDv shown in engineering notation or proper units and not so many zeros. Like the 34410A / 34411A has it shown. 5.67 uV on the 43410A instead of 0.000,005 V Hopefully we will see this in a future update as well. --- End quote --- +1 --- Quote from: Andreas on August 19, 2016, 07:06:35 am --- --- Quote ---BTW: How can I store a screenshot of the instrument's display? --- End quote --- You can save it to a screenshot or use Benchvue or over the LXI web interface. It is pretty easy and works well. --- End quote --- OK. I tried to save to USB and got only raw data... |
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