VP2 Barometer precision

WD is showing the pressure (in hPa) to 1 dp, as desired, but seems to only change with every full ~1.0 hPa change in the pressure.
I have Davis VP2 so the pressure should change every 0.1 hPa, no?

My logs look something like this:

1000.0
1001.0
1001.9
1002.9
1004.0
etc.

which version/build of WD?
and what log are you refering to?

WD 10.37S - 56

Logs in the logfiles directory e.g. 22018lg.txt
Also in my customtextout.txt
http://nw3weather.co.uk/customtextout.txt

that log is a 1 minute average
I think its just a coincidence what you have seen

Here’s a link to my WD screenshot, and it’s clear from the pressure graph that is moving in 1 hPa increments:
http://nw3weather.co.uk/hidden.gif

how do you have WD set to get the data?

Not sure what you mean… where is this configured?

Hi, perhaps WD is getting the value from an airport METAR.
Your reading of 992 matches the reading from Heathrow (changed down 1mb around 4am)
Check settings for the METAR download in FTP/Internet setup.

re connection, I mean, is it usb, serial ,ip or via weatherlink.com
but I suspect Martyn is correct
you might have set for WD to use the barometer from a downloaded metar

oh wow no idea i still had the metar barometer override on.
Thank you for your amazing intuition!

Working perfectly now

I think Martyn known the software better than me!

I know some things, but not everything. :oops:
Thanks though Brian :smiley: