Fixed the graphs. There was function in JS to plot only last 60 days of
data, I forgot about it.
Some graphs take bit of time to load, especially on mobile devices. I'm
not great on software programming, sorry.
27/05/16 0:45, Randy Evans пишет:
Illya,
Very interesting. The temco/stability data does not plot but the X-Y
format seems to be OK. Is it supposed to plot or do I have to plot it
myself with the csv data?
Thanks,
Randy Evans
On Thu, May 26, 2016 at 3:42 AM, Illya Tsemenko <[email protected]
<mailto:[email protected]>> wrote:
I'm glad my little project got so much attention. Worth to mention
few points regarding my (or any other LTZ1000) unit:
A. One should consider cost of whole BOM, not only LTZ chip. In my
case resistors from VPG exceed cost of LTZ1000 by far.
B. PCB I designed was targeted best to my own application need,
where compact size and direct output (whatever is coming out of
LTZ) were key importance. Since modules are part of bigger system
with DAC synth, specific value, like 7.1500000 was not important
for me.
C. If there is large enough group to have this project going, I
can actually modify original design (e.g. for easier hand
soldering, or added buffer or ratio circuits, onboard LDO, you
name it) and get PCBs made for interested nuts, at small cost.
You can also find lot of temco/stability data with
temperature/environment logs with mentioned LTZ modules on my site
here: https://xdevs.com/services/ in LTZ1000 voltage reference
tests section. RAW DSV data are available. I still have 3 modules
at hand for any testing/checks (one was sold while ago, one was
installed in HP 3245A source to replace LM399).
Illya "TiN" Tsemenko
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