Products > Test Equipment

Keysight New instruments

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Fungus:

--- Quote from: mawyatt on February 27, 2021, 06:24:12 pm ---Hat's off to Keysight for having service manuals, wish they would include schematics like the old hp and Tektronix days tho. Maybe others will follow with service manuals & schematics ::)

--- End quote ---

A schematic these days would just be a load of big chips with wires going between them. Not much use to anybody.

floobydust:

--- Quote from: 2N3055 on February 27, 2021, 08:43:49 am ---
--- Quote from: floobydust on February 27, 2021, 04:24:37 am ---I wish Keysight would blank leading zeros and get rid of the European? gap every three digits, looks nutty I've never liked that bad idea.

--- End quote ---
Why? I like leading zeros because it is obvious what range I'm in , and, well, euro way of writing numbers in math is superior...  >:D

--- End quote ---

I went on that rant a long time ago, ended up at the SI or Metric Committee and gave up there. Euro writing using gaps or dots instead of commas always baffled me.
These new instruments are not metrology-grade. It's weird to see (out of the user's manual) "+3.000 7" the gap drives me nuts. Or "00.010 7" or "0.001 75" or "000.037"
Please show me more zeros, oh autoranging too dumb to change units multimeter. 37mohms I can deal with- even though the multimeter's resolution hits the floor those some functions. If I'm manual ranging, why not show the appropriate range units (u,m,k etc.)? Instead it's padded with zeros. Minor gripe.

mawyatt:

--- Quote from: Fungus on February 27, 2021, 08:28:34 pm ---
--- Quote from: mawyatt on February 27, 2021, 06:24:12 pm ---Hat's off to Keysight for having service manuals, wish they would include schematics like the old hp and Tektronix days tho. Maybe others will follow with service manuals & schematics ::)

--- End quote ---

A schematic these days would just be a load of big chips with wires going between them. Not much use to anybody.

--- End quote ---

I suspect the Power Supply has a few more discrete components than the DMM, so a schematic would indeed be very helpful!! As mentioned the series-pass devices (MOS or Bipolar) are the weak link in most Power Supplies, and when they go it's usually a terminal to terminal short which takes out other components.

Past experience indicates semiconductors always fail first to protect the fuses, not the other way around :o

Best,

2N3055:

--- Quote from: floobydust on February 27, 2021, 08:39:00 pm ---
--- Quote from: 2N3055 on February 27, 2021, 08:43:49 am ---
--- Quote from: floobydust on February 27, 2021, 04:24:37 am ---I wish Keysight would blank leading zeros and get rid of the European? gap every three digits, looks nutty I've never liked that bad idea.

--- End quote ---
Why? I like leading zeros because it is obvious what range I'm in , and, well, euro way of writing numbers in math is superior...  >:D

--- End quote ---

I went on that rant a long time ago, ended up at the SI or Metric Committee and gave up there. Euro writing using gaps or dots instead of commas always baffled me.
These new instruments are not metrology-grade. It's weird to see (out of the user's manual) "+3.000 7" the gap drives me nuts. Or "00.010 7" or "0.001 75" or "000.037"
Please show me more zeros, oh autoranging too dumb to change units multimeter. 37mohms I can deal with- even though the multimeter's resolution hits the floor those some functions. If I'm manual ranging, why not show the appropriate range units (u,m,k etc.)? Instead it's padded with zeros. Minor gripe.

--- End quote ---

Truth is, you're right, these devices have graphical screens, displayed values could be made more human readable. And, just to be clear, in math we write numbers with comma as a decimal point, and spaces between groups of 3 digits. But space is not full digit space, it's just tiny gap to be visible but not to break number as a  whole. I also have problems with  how they display 1 000 000.
It should be more like 1 000 000 or even less space.
On graphics screen, piece of cake. But, noooo...

EEVblog:

--- Quote from: 2N3055 on February 27, 2021, 09:30:14 pm ---Truth is, you're right, these devices have graphical screens, displayed values could be made more human readable. And, just to be clear, in math we write numbers with comma as a decimal point, and spaces between groups of 3 digits.

--- End quote ---

Don't make the mistake of assuming that your country is the centre of the world. Comma for the decimal point is not used everywhere, it's mostly european thing. Not in the biggest places where electroncis are developed, like the US, UK, Japan, China, Taiwan, Hong Kong, Singapore and Korea:
https://en.wikipedia.org/wiki/Decimal_separator

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