The E4438C, E8267C and E8267D internal files are stored as a single file with alternating I and Q samples. Sample points are stored as 16-bit integers (2 bytes per sample). The I or Q waveform is encoded into the full 16 bits.
Double-click or use the drop-down menu to select Yes if the binary data is in Big Endian format, otherwise select No.
Waveform data obtained from an ESG, PSG, MXG, or PXB is in Big Endian format.
Enter the path to the source file you want to import, or select the
Source File field, then use the Browse button 
to open a dialog window, then navigate to
the desired file.
Double-click or use the drop-down menu to enable or disable the use of a marker array file.
No – do not use a marker source file that contains marker array data.
Yes – use a marker source file that contains marker array data.
Enter the path to the Marker Source File you want to import, or select
the Marker Source File field, then use the Browse button
to open a dialog window, then navigate to the desired file.
Set to to enable this parameter.
Markers may be imported from a separate file, if desired. The marker file format is 1 byte per I/Q sample pair. If there are 1000 samples in the waveform, the marker file must contain 1000 bytes. The 4 least significant bits in the byte contain Markers 1-4, with the least significant bit containing Marker 1.
Displays the number of markers for this format. (Read-only)
Displays the number of points defined by the data files in the selected waveform. (Read-only)