Products > Test Equipment

Time sync system clock R&S RTB2004

<< < (3/9) > >>

pdenisowski:

--- Quote from: nctnico on May 31, 2023, 12:17:21 pm ---I think the OP is not after synchronising measurements as NTP is good down to tens of milliseconds anyway. I can imagine that having the correct time on instruments could be helpful to cross-reference measurements / screendumps between various instruments to determine which measurement lead to certain results.

--- End quote ---

Understood.  I work with a lot of loaner / demo instruments and pretty much none of them arrive at my lab with the date/time set appropriately :)  Can be an issue when I'm searching for measurement results or screenshots I remember making at a certain time or on a certain date.


--- Quote from: nctnico on May 31, 2023, 12:17:21 pm ---Using NTP is a bit of a can of worms though as NTP provides UTC time. The oscilloscope would need to know the time zone and daylight savings schedule for that time zone.

--- End quote ---

Yep, that would also need to be addressed as well. 

R.J.:
That's exactly what I mean.
Without being connected to the network, I can imagine you setting the date and time manually every time.
However, just about everyone has a network in his or her home/lab and will also want to connect his/her measuring equipment to it in order to use the nice and fast remote control that is possible.

How convenient it would then be to have the scope's date/time set by the router in that environment, (that router is basically always used as a time server [NTP server] for the locally connected network equipment) to be set equal to the actual date, time and time zone.

tooki:

--- Quote from: R.J. on May 31, 2023, 04:25:54 pm ---That's exactly what I mean.
Without being connected to the network, I can imagine you setting the date and time manually every time.
However, just about everyone has a network in his or her home/lab and will also want to connect his/her measuring equipment to it in order to use the nice and fast remote control that is possible.

How convenient it would then be to have the scope's date/time set by the router in that environment, (that router is basically always used as a time server [NTP server] for the locally connected network equipment) to be set equal to the actual date, time and time zone.

--- End quote ---
I’m not aware of any routers that act as NTP servers. I’m not sure why you’d bother since you can just sync to a public one. It’s not like NTP causes enough traffic to bog down your network.


--- Quote from: nctnico on May 31, 2023, 12:17:21 pm ---Using NTP is a bit of a can of worms though as NTP provides UTC time. The oscilloscope would need to know the time zone and daylight savings schedule for that time zone.

--- End quote ---
Given that there are time libraries that handle all of that, both large libraries for PC software and compact ones for microcontrollers, that is a problem that is absolutely trivial to solve.

I mean, a minimal implementation takes under 20 lines of user code to do on an ESP32 with ready-made libraries.

tautech:

--- Quote from: tooki on May 31, 2023, 05:10:19 pm ---I’m not aware of any routers that act as NTP servers. I’m not sure why you’d bother since you can just sync to a public one. It’s not like NTP causes enough traffic to bog down your network.

--- End quote ---
Yet a member here experienced in security systems maintains some can and we were to investigate to sync with the NTP server in SDS1104X-E which doesn't have a RTC.
He wanted it for portable use with valid timestamps on screenshots however carrying around a router just for that seemed nuts to me so a much simpler solution was devised using the already inbuilt functionality with a USB WiFi dongle and hotspotting it to your phone. < Worked a treat !

Carrying an additional few grams of dongle and the phone that is always with you seemed make far more sense.

R.J.:
Quote from: tautech on Today at 18:45:51Quote from: tooki on Today at 18:10:19"I’m not aware of any routers that act as NTP servers. I’m not sure why you’d bother since you can just sync to a public one. It’s not like NTP causes enough traffic to bog down your network.

--- End quote ---
Yet a member here experienced in security systems maintains some can and we were to investigate to sync with the NTP server in SDS1104X-E which doesn't have a RTC.
He wanted it for portable use with valid timestamps on screenshots however carrying around a router just for that seemed nuts to me so a much simpler solution was devised using the already inbuilt functionality with a USB WiFi dongle and hotspotting it to your phone. < Worked a treat !

Carrying an additional few grams of dongle and the phone that is always with you seemed make far more sense."


Gentlemen, the situation I am trying to outline concerns a stable situation, not a mobile lab.
Every router connected between the home network and the Internet basically can work/works as an NTP server or is easily set up as such. Precisely because there are more and more devices at home that require time synchronisation. PCs have depended on it for some time, but anything with an internal clock will be able and willing to make use of it. And that just works.
Thank you for understanding.

--- End quote ---

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