Newbie question: pressure offset

[BrianA]

Hi

Just been given an N96GY for Christmas

We're 340m up in Teesdale so obviously I need to adjust the pressure reading for height ...

My understanding is:

- You can manually adjust for relative pressure on the FO console and this will affect the datastream fed to Cumulus (ie the data Cumulus receives will be the 'adjusted' data)
- You can alternatively manually adjust in Cumulus
- The height that you enter on the Cumulus setup form is purely related to web output and doesn't result in any relative pressure adjustment

Am I correct?

Cheers

Brian Abbott

[steve]

- You can manually adjust for relative pressure on the FO console and this will affect the datastream fed to Cumulus (ie the data Cumulus receives will be the 'adjusted' data)
- You can alternatively manually adjust in Cumulus

Correct, but you should probably set the console in preference to using the 'calibration' setting in Cumulus.

- The height that you enter on the Cumulus setup form is purely related to web output and doesn't result in any relative pressure adjustment

Cumulus doesn't use the height that you enter when determining the sea-level/relative pressure, true. It does use it however, when calculating 'altimeter pressure' for sending to CWOP. Whether this is a sensible thing for it to do for Fine Offset stations is debatable, but it does that way for consistency with other station types.

[BrianA]

Thanks Steve.