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» Online Classroom   » Tech Support   » Barometers   » WXJ — Data capacity and function

Author Topic: WXJ — Data capacity and function
David Burch

 - posted September 30, 2004 08:49 PM      Profile for David Burch           Edit/Delete Post 
The Weather Jack can store 128 data points. If you use the software that comes with the product to access the data, you can set the sample time at 15m, 30m or 1h. At 1h and 128 data points, you have a total of about 5.3 days of data that can be stored before it will start overwriting the earlier data. If you set the sample period longer or shorter you will get more or less days of data.

Each time you acess the data, it transfers the data to your computer (appending it to a file called baro.log) and then carries on with the data the collection again. You can sample it any time you choose.

There are 128 data points stored in the sensor at any one time. After the 128th is stored, the 129th will overwrite the 001 data point and keep going form there. The downloading or interrogation process, however, always reads the time and date so it appends the data properly to the baro.log file.

Note that if you want sample intervals other than 15m, 30m or 1h, then you must access the device via the Hyper-Terminal program that comes with all versions of Windows. There are instructions in the manual on how to do this.

Also, the estimated battery life of 1 year assumes you are sampling on the 1hr level. If you sample more often, the battery life may be shorter.

From: Starpath, Seattle, WA

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