CarlosEDP has quit [Read error: Connection reset by peer]
CarlosEDP has joined #scopehal
CarlosEDP has quit [Quit: node-irc says goodbye]
CarlosEDP has joined #scopehal
CarlosEDP has quit [Quit: Client limit exceeded: 20000]
CarlosEDP has joined #scopehal
someone--else has joined #scopehal
CarlosEDP has quit [Quit: Client limit exceeded: 20000]
CarlosEDP has joined #scopehal
CarlosEDP has quit [Read error: Connection reset by peer]
CarlosEDP has joined #scopehal
bvernoux has joined #scopehal
<GenTooMan>
hmm 2 things I've noticed with the SDS1104X-E the unit can hang / lock up, since it has no physical power button this is a pain, also no physical reset button is a pain. The SDS1104X-E still can hang when communicating via ethernet.
<bvernoux>
azonenberg, I have just receive my big RF stuff order with some nice SMA 26.5GHz connector 142-0761-881
<azonenberg>
bvernoux: nice, i havent tested any of those yet
<azonenberg>
I'm still working my way through sonnet sims optimizing the various launch transitions
<bvernoux>
I think transition is probably better natively with 142-0761-881 vs 901-10510-2
<bvernoux>
I have also bought some excellent quality LOAD
<bvernoux>
to evaluate them with my VNA
<bvernoux>
LOAD/SHORT/OPEN in fact which are intended to work up to >18GHz
<bvernoux>
they are about 20USD per unit but very high quality
<bvernoux>
it is always cheaper than full calibration Kit for VNA which cost >600USD in best case up to 7GHz ...
someone--else has joined #scopehal
<azonenberg>
bvernoux: well with a vna kit you're mostly paying for the calibration on the standards
<azonenberg>
not just the precision, but the data
<GenTooMan>
calibrated tools are great you know what you have LOL
<someone--else>
I wonder if there is any data on how mechanical tolerances of calibration standards translate into s-parameter errors
<someone--else>
i.e. how good a calibration standard can be derived from a reasonably precise (dunno, +-10um) mechanical device
GenTooMan has quit [Remote host closed the connection]
GenTooMan has joined #scopehal
<bvernoux>
azonenberg, yes clearly the price is only because it requires an expensive reference/VNA
<monochroma>
it's primarily the manual labor cost
<electronic_eel>
... and the limited market demand. if calibration standards were bought in the millions every year, someone would probably come up with a highly automated process for manufacturing and calibrating them
<azonenberg>
Yeah
<azonenberg>
But in small volumes its cheaper to just pay an expensive technician to operate a $$$$ VNA
<electronic_eel>
yeah. and that seems to be the state of the art
<Kliment>
someone--else: I can ask some metrology people when they come back from holiday
<someone--else>
Kliment: would be great, thanks!
<Kliment>
someone--else: not sure if they will have answers, but I'm in a meeting with them end of July for unrelated reasons so why not
<someone--else>
sounds great
<someone--else>
it's probably not that difficult to calculate/simulate, but I was wondering if somebody already did this
<someone--else>
and also suspect that the primary standards are derived this way anyway
<Kliment>
someone--else: They are working on a system for authenticating measurement results and tracing back the chain to a source of truth
<Kliment>
someone--else: so I doubt they have direct answers to that level of technical question but they might at least know who to ask within the org
<Kliment>
someone--else: I'm working with them on the handheld device that their field techs will be using for authenticating calibration outcomes
<someone--else>
authenticating as in cryptographically?
<Kliment>
Yes
<Kliment>
As in, this is a digitally signed proof that device X was calibrated to standard Y at time Z
<someone--else>
oh, interesting
<Kliment>
It's fun stuff, but that's all I can say about it for the moment
bvernoux has quit [Quit: Leaving]
<GenTooMan>
Kliment, very important when verifying things and calibrating get a cert from a place in PDF form can be underwhelming.
elms has quit [Read error: Connection reset by peer]
esden has quit [Read error: Connection reset by peer]