On Sun, 4 Sep 2016 11:37:29 -0400, Ralph Mowery
wrote:

There is a lot of items comming from China now. Some seems ok and some
not. Ran across this about the companies making two versions. One using
low quality parts and another using higher quality parts for venders
that want a better quality produit at a highe price.

Any truth to this or just advertising ?
https://www.circuitspecialists.com/b...el_components/

If you read the above page, it says
"...with a 'less expensive' power supply and 'less expensive' LCD."
I would assume that implies that the rest of the electronics are the
same in both versions.

Power supplies come in all shapes and sizes. Some are beefy, can
handle overloads, can handle the heat heat, respond faster, etc and
are generally better and more expensive. LCD's come in various
technologies, which offer different features and performance. For
example, viewing angle on the cheap TN displays might be quite narrow,
while the pricy IPS displays can approach 180 degrees. Also important
is response time, which is 5msec or less on good displays, but longer
on cheaper slow displays which will tend to show streaks on moving
images. Hantek might also be juggling the dot resolution on the LCD,
where the cheaper display has fewer dots resulting in a rough looking
image.

LCD panel types:
https://pcmonitors.info/articles/lcd-panel-types-explored/

Although not found in test equipment, TV and computah LCD display
types can go even higher end:
http://www.pchardwarehelp.com/guides/lcd-panel-types.php

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558