[time-nuts] uBlox F9P versus F9T
Glen English VK1XX
glenlist at pacificmedia.com.au
Wed Jul 17 20:57:31 UTC 2019
The F9T and F9P - are these interchangeable for stationary timing use
and stationary high performance position ?
From how I read the datasheets, :
>>the F9P has an internal RTK engine, and the F9T outputs the info RTCM
etc and that data can be run on a external RTK engine on a micro.
The P provides 1.5m standalone positional accuracy compared to the T
standalone positional accuracy of 2.0m. Not much difference there..
>> the F9P and F9T have their timing pulse performance shown using
different description.
The P has this as "RMS and 99%", while the T has this as '5nS','2.5ns diff'
>>> Both can operate with companion receivers to enhance performance
but I interpret this as only the P can do a (internal, companion mode)
differential position fix and only the T can do a (internal companion
mode) differential time fix. That is , internally without using an
external engine.
***
So it seems, if using an external RTL etc engines, the devices can do
roughly the same thing.
How do others interpret this ? I want to do projects using positional
for one app, and timing for another, and would like to be able to
acheive the deep quantity discounts...
glen
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