Products > Test Equipment

Test Equipment Anonymous (TEA) group therapy thread

<< < (2484/27437) > >>

med6753:

--- Quote from: Specmaster on June 26, 2018, 11:09:39 pm ---
--- Quote from: med6753 on June 26, 2018, 10:23:55 pm ---
It's the variability of the source that drives you nuts.


--- End quote ---
You are spot on, if the source is varying, even slightly, with the higher resolution meter, the more the least significant digits are going to keep altering in an effort to reflect the changing input. Whereas with fewer digits, that change has got to be much bigger in order to alter the least significant digit. 3.5 meter, no change in display, 4.5 meter sometimes the last digit will go up or down by 1, 5.5 meter, last 2 digits were changing all the time on the power supply. Its like a proverb, man with 3.5 and 4.5 digits, knows the voltage, man with 5.5 or more digits is unsure of the voltage due to last digits changing. :-DD

--- End quote ---

Quite frankly the 5.5 digits is overkill for me. I could get along fine with 4.5 or even 3.5 digits. But it's nice to have....just in case. 

6.5 digits? Only if drops from heaven for free.   :-DD

med6753:

--- Quote from: Specmaster on June 27, 2018, 12:26:17 am ---
--- Quote from: med6753 on June 22, 2018, 10:28:28 pm ---
--- Quote from: Specmaster on June 22, 2018, 10:24:39 pm ---I'm in the garage tomorrow looking some angle brackets so I can fix my function generator and LCR meter to underside of my shelf. I'd like to mount the TF930 up there too but I'm worried about spoiling the resale value of it later if I upgrade it.

--- End quote ---

Looks like I've started a trend. You must post pix  :-+

--- End quote ---
As promised here is my revised (for now) bench, what you can't see is dotted around the room in any suitable space I can are 4 CRO's, signal generator, numerous, microscopes, handheld DMM's, analogue meters, portable LCR devices, soldering kit, jigs, isolating transformer, variac, power meter, parts racks, calibrators and tools etc. I'd love to have a room big enough to take a proper 2 or 3m bench and shelves then I could have all the kit out and ready to be used, maybe this week its my turn to win the lottery.... :-+


--- End quote ---

Looks good!  :-+ You learned well.  :-DD

Specmaster:

--- Quote from: med6753 on June 27, 2018, 12:55:10 am ---
--- Quote from: Specmaster on June 26, 2018, 11:09:39 pm ---
--- Quote from: med6753 on June 26, 2018, 10:23:55 pm ---
It's the variability of the source that drives you nuts.


--- End quote ---
You are spot on, if the source is varying, even slightly, with the higher resolution meter, the more the least significant digits are going to keep altering in an effort to reflect the changing input. Whereas with fewer digits, that change has got to be much bigger in order to alter the least significant digit. 3.5 meter, no change in display, 4.5 meter sometimes the last digit will go up or down by 1, 5.5 meter, last 2 digits were changing all the time on the power supply. Its like a proverb, man with 3.5 and 4.5 digits, knows the voltage, man with 5.5 or more digits is unsure of the voltage due to last digits changing. :-DD

--- End quote ---

Quite frankly the 5.5 digits is overkill for me. I could get along fine with 4.5 or even 3.5 digits. But it's nice to have....just in case. 

6.5 digits? Only if drops from heaven for free.   :-DD

--- End quote ---

Same thing here, nothing I do actually warrants more than 3.5 digits, the others are just nice to have and TBH, I'd love to have a 8.5 digit one as well just for the sheer hell of it and I'd still stand by my other post about for most applications 3.5 or 4.5 meters are adequate.

Interestingly I have just done a 2 hour test of these meters using my AD584-M and there was only 2 meters that did not change their readings, the Fluke 27 handheld and a HP3466A, the others all changed by 1 digit so not to shabby.   :-+

GreyWoolfe:

--- Quote from: Specmaster on June 27, 2018, 12:26:17 am ---
--- Quote from: med6753 on June 22, 2018, 10:28:28 pm ---
--- Quote from: Specmaster on June 22, 2018, 10:24:39 pm ---I'm in the garage tomorrow looking some angle brackets so I can fix my function generator and LCR meter to underside of my shelf. I'd like to mount the TF930 up there too but I'm worried about spoiling the resale value of it later if I upgrade it.

--- End quote ---

Looks like I've started a trend. You must post pix  :-+

--- End quote ---
As promised here is my revised (for now) bench, what you can't see is dotted around the room in any suitable space I can are 4 CRO's, signal generator, numerous, microscopes, handheld DMM's, analogue meters, portable LCR devices, soldering kit, jigs, isolating transformer, variac, power meter, parts racks, calibrators and tools etc. I'd love to have a room big enough to take a proper 2 or 3m bench and shelves then I could have all the kit out and ready to be used, maybe this week its my turn to win the lottery.... :-+



--- End quote ---

Nice.  Love the 2 HP 3466As.  I have 2 myself.  Don't forget to post this in the what's your bench look like thread.

bitseeker:

--- Quote from: Specmaster on June 26, 2018, 11:09:39 pm ---
--- Quote from: med6753 on June 26, 2018, 10:23:55 pm ---
It's the variability of the source that drives you nuts.


--- End quote ---
You are spot on, if the source is varying, even slightly, with the higher resolution meter, the more the least significant digits are going to keep altering in an effort to reflect the changing input. Whereas with fewer digits, that change has got to be much bigger in order to alter the least significant digit. 3.5 meter, no change in display, 4.5 meter sometimes the last digit will go up or down by 1, 5.5 meter, last 2 digits were changing all the time on the power supply. Its like a proverb, man with 3.5 and 4.5 digits, knows the voltage, man with 5.5 or more digits is unsure of the voltage due to last digits changing. :-DD

--- End quote ---

TEA Proverb #382: Man with more digits knows when he needs to buy a more stable power source (or replace the filter caps). :-DD

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod