Products > Test Equipment
Keysight's new 34465A (6.5 digit) and 34470A (7.5 digit) bench multimeters
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6thimage:

--- Quote from: Dr. Frank on March 04, 2015, 12:24:13 pm ---Thinking a little bit further about the 10V DCV drift specifications (most stable range) I come to the conclusion, that the 34465A will probably have an LM399H reference inside, (20ppm/year drift), and the 34470A will probably have the LTZ1000A reference of the 3458A (8ppm/year drift).

As the operational ambient temperature is also specified for 55°C, they again have to run the references on about 90°C oven temperature.

Frank

--- End quote ---

I'm guessing you're right about the 34465A using the LM399. Looking through the parts on keysight, both the 65A and 70A now have fan shields (http://www.keysight.com/my/faces/partDetail.jspx?partNumber=5041-5261) presumably to limit airflow across the reference. It would be interesting to see how much of a difference the shield makes and whether there would be any benefit adding the shield to the 61A.
6thimage:
I have had an update from Keysight about the 34461A's firmware:


--- Quote from: Keysight ---We will be releasing revision 2.08 rather than 2.06 due to defects that were found and resolved during testing. I know this seems unending and I apologize. I am given release dates which I then pad in case of unforeseen issues. 2.08 is now scheduled for release March 16th.

I have attached a set of slides which summarize the changes/fixes for the 34461A that are contained in 2.08.
--- End quote ---

This is the same date (March 16th) as rosbuitre said, but they have increased the version number. I don't think there is anything new in the slides, but it does mention that the ethernet has HiSLIP and IPv6 support, which I hadn't realised before.

Link to the slides: https://www.dropbox.com/s/kynqv5v1opoda7i/34460A-34461A%202.08%20Enhancements.pptx?dl=0.
rosbuitre:

--- Quote from: 6thimage on March 04, 2015, 03:32:59 pm ---I have had an update from Keysight about the 34461A's firmware:


--- Quote from: Keysight ---We will be releasing revision 2.08 rather than 2.06 due to defects that were found and resolved during testing. I know this seems unending and I apologize. I am given release dates which I then pad in case of unforeseen issues. 2.08 is now scheduled for release March 16th.

I have attached a set of slides which summarize the changes/fixes for the 34461A that are contained in 2.08.
--- End quote ---

This is the same date (March 16th) as rosbuitre said, but they have increased the version number. I don't think there is anything new in the slides, but it does mention that the ethernet has HiSLIP and IPv6 support, which I hadn't realised before.

Link to the slides: https://www.dropbox.com/s/kynqv5v1opoda7i/34460A-34461A%202.08%20Enhancements.pptx?dl=0.

--- End quote ---

  :-+
6thimage:

--- Quote from: rosbuitre on March 04, 2015, 03:44:20 pm ---
--- Quote from: 6thimage on March 04, 2015, 03:32:59 pm ---I have had an update from Keysight about the 34461A's firmware:


--- Quote from: Keysight ---We will be releasing revision 2.08 rather than 2.06 due to defects that were found and resolved during testing. I know this seems unending and I apologize. I am given release dates which I then pad in case of unforeseen issues. 2.08 is now scheduled for release March 16th.

I have attached a set of slides which summarize the changes/fixes for the 34461A that are contained in 2.08.
--- End quote ---

This is the same date (March 16th) as rosbuitre said, but they have increased the version number. I don't think there is anything new in the slides, but it does mention that the ethernet has HiSLIP and IPv6 support, which I hadn't realised before.

Link to the slides: https://www.dropbox.com/s/kynqv5v1opoda7i/34460A-34461A%202.08%20Enhancements.pptx?dl=0.

--- End quote ---

 :clap:

--- End quote ---

There's no need to be sarcastic - the original firmware update for the 34461A was due out, at the very latest, of December 2014 (I reported the histogram bug to them in January 2014). I was also told at the end of January that 2.06 was going to be released on March 1st. Then you said that bumping it up to 2.07 added a fortnight. So the fact that keysight have increased the version number again and not pushed the release back further is a small miracle.
rosbuitre:

--- Quote from: 6thimage on March 04, 2015, 04:00:10 pm ---
--- Quote from: rosbuitre on March 04, 2015, 03:44:20 pm ---
--- Quote from: 6thimage on March 04, 2015, 03:32:59 pm ---I have had an update from Keysight about the 34461A's firmware:


--- Quote from: Keysight ---We will be releasing revision 2.08 rather than 2.06 due to defects that were found and resolved during testing. I know this seems unending and I apologize. I am given release dates which I then pad in case of unforeseen issues. 2.08 is now scheduled for release March 16th.

I have attached a set of slides which summarize the changes/fixes for the 34461A that are contained in 2.08.
--- End quote ---

This is the same date (March 16th) as rosbuitre said, but they have increased the version number. I don't think there is anything new in the slides, but it does mention that the ethernet has HiSLIP and IPv6 support, which I hadn't realised before.

Link to the slides: https://www.dropbox.com/s/kynqv5v1opoda7i/34460A-34461A%202.08%20Enhancements.pptx?dl=0.

--- End quote ---

 :clap:

--- End quote ---

There's no need to be sarcastic - the original firmware update for the 34461A was due out, at the very latest, of December 2014 (I reported the histogram bug to them in January 2014). I was also told at the end of January that 2.06 was going to be released on March 1st. Then you said that bumping it up to 2.07 added a fortnight. So the fact that keysight have increased the version number again and not pushed the release back further is a small miracle.

--- End quote ---

Hi
Not trying to be sarcastic, Am I getting the 34461A Friday and makes me happy improvements and corrections, only that

Regards
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