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FAQ

How to Purge Records From The HP48

Each time you read the WL40, the data file goes into the REC sub-directory on the HP48 and remains in memory, even after downloading to your PC.

 

To prevent repeated data files from being downloaded each time you transfer data to the PC, and to regain maximum memory for field downloads, it is a good idea to purge the transferred data files from the REC sub-directory.

 

             Note:  Be sure you have successfully downloaded and processed your                                            data to the graph stage before purging the HP48 REC sub-                                                            directory.

 

Only when you're sure you have a valid copy of your data in your PC and it has been successfully processed, use the following steps to purge your REC sub-directory.

 

1.   From {HOME}, press the RDS sub-directory, followed by pressing              the REC sub-directory. You should see ...ME RDS REC } across the       top of the HP48 screen. Your data files are stored here.

            

             Files listed across the bottom of the screen should all start with S              which              stands for serial number. If you are not in the REC sub-     directory, you could erase your programs, analogous to typing              ERASE *.* in the wrong     sub-directory on your PC.

 

2.   From the REC sub-directory, change to the Alphabet Lock mode by                   pressing the Greek letter alpha key twice, a (the fourth key up from    bottom left). The alpha enunciator appears in the upper part of the       screen. Type V A R S and press [Enter].

            

 

3.   This displays a list of all your data files on the HP48 screen.

            

 

4.   Press [purple left-shift] key followed by the PURG key (the EEX key),              to purge the list of data files.

            

 

             Return HOME by pressing the [green right-shift] key then the HOME             key (third key down from top left).

            

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