Activation needed of option 122/045 GPS stream | What is the GPS dTime ?
Hi,
To get a better accuracy of time stamps for IQ-data merging with other external measurement equipment, we are using the 122/045 GPS stream option together with the 0401 GPS receiver option. My question would be if it needs any activation in the Spectran block for the GPS stream option? Or is the time server functionality automatically set to the GPS stream once the SW-key for the GPS stream option is activated?
Please check https://v6-forum.aaronia.de/forum/topic/how-to-get-the-new-gps-time-sync-validation-features-to-work/ for how to set up GPS time synchronization. If that doesn't help, please rephrase your question to be more specific (there are multiple aspects to GPS time synchronization).
Thanks for the link.
It addresses exactely my question.
After setting GPS Mode to Location and Time and Stream Clock Source to GPS, I got the following times displayed:
GPS dTime went to 0,00ms, which should be a good sign, but for what stands the Stream dTime for, which is not explained in the a.m. link?
This is relatively a new field which is why you don't see it in the linked article.
It displays the delta between the timestamps of the datastream of the device and the so called master stream time which is the time source for everything without its own time generator (e.g. any Spectran V6 where "Stream Clock Source" is set to "Consumer"). You can make the RTSA use the GPS time as master stream time by setting "Stream Clock Source" to "GPS Provider", that should bring it down to (near) zero. However it has no impact on timestamps within the datastream generated by the device.
