As shown in Fig.1-5-1, choose the menu SEGY->Define Trace Header to open a dialog box as in Fig.1-5-2.

Step 1

Click the button "<>" to select the file "vib_eg.sgy".

Step 2

Expand horizontally the dialog so as to show all columns(Fig.1-5-3).

Step 3

Move the scroll bars in the table to check if the header data is correct.

Step 4

Owing to the header parameters in "vib_eg.sgy" are totally in the default position, just keep the settings intact and quit(Fig.1-5-3).