Products > Test Equipment
Time sync system clock R&S RTB2004
<< < (6/9) > >>
tautech:

--- Quote from: Hexley on June 02, 2023, 03:12:41 pm ---
--- Quote from: tautech on June 02, 2023, 09:50:37 am ---
--- Quote from: RBBVNL9 on June 02, 2023, 09:45:06 am ---But to put this into perspective: I have several recent and not-always-so-cheap instruments in my lab that have no time and date setting at all!!<snip> The files created on a USB stick etc. carry time stamps like “30 Dec 1999 at 23:00”. Oef!

--- End quote ---
Now there's a project for you to check which instruments you have that keep the most accurate time.

--- End quote ---
At the risk of derailing this nice R&S thread, I have to say that the Siglent SDG1000X arbitrary wave generator (and probably its siblings) gets a special mention for waking up at each power-on thinking it is midnight, January 1, 1970.  :-//
   I actually modified pdenisowski's Python script to set the time and date of the SDG, but there is really not much point since the data is volatile and resets on every power cycle. In case anyone is interested, though, that modified script is attached.

--- End quote ---
Correct, these models make no claim of having a RTC so Linux default time it is.
R.J.:
Done another measurement where the values had to be saved where the measurement is at a time in the future.
I understand it has to do with summer and winter time. However, you only find out when you have already saved the measurement. After all, the measurement is already recorded on USB stick.
If the scope had copied the correct date and time from, in this case the router acting as an NTP server in the network, this problem would not occur.
Every device in the network (Managed switches and home automation devices) uses the router as time synchronisation, but an expensive scope from a reputable brand does not (???)
See the attached screenshot.
nctnico:
Having an NTP server / client is not going to help you as NTP distributes UTC time. What would be needed is being able to setup the time zone with the correct daylight savings. Besides equipment running an OS like Linux or Windows, I have not seen any equipment with this capability. So what the RTB2004 is doing, is not out of the ordinary at all.
R.J.:
In the scope, there is an option to set the date and time in a menu. How easy would it then be to include the option for the correct time zone?
By decoding the SNTP protocol and including it in the scope's firmware, the date/time parameters of the internal clock can then be synchronised.
SNTP time synchronisation is implemented in the smallest hardware, take an ESP32 from Espressif for example. Why there??
It is just extremely irritating and frustrating that such a device as a scope with all the options of ±€9300,= is not equipped with this (standard) functionality while data with date and time (such as screenshots and measurements) can be saved in a file for later diagnosis and processing.
The implementation of such a piece of SNTP-sync software might well be a standard in the more expensive/most expensive segment of these measuring devices(???)
Very unfortunate that they did not then include it in the "entry-level" models when it is available (???).
If the higher-end measuring equipment does not have time synchronisation, then the manufacturers have made a big mistake.

A measurement is something fleeting and can occur once. How important it is then to have the correct and exact date and time of that event and to be able to record it in a file with the proper date and time stamp.



tooki:

--- Quote from: R.J. on February 16, 2024, 09:22:21 pm ---In the scope, there is an option to set the date and time in a menu. How easy would it then be to include the option for the correct time zone?

--- End quote ---
Probably a lot more complex than you think,* but still trivial since there are libraries that can do it, and the scope certainly has enough storage and CPU to handle it.

*time zones are one thing, but different countries switch to/from summer and winter time at different times, using different rules, so automatic switching, at least, is a lot more complex under the hood than just a checkbox.
Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod