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194 Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide
Creating and Downloading Waveform Files
Waveform Structure
The following example shows a marker binary file (all values in hex) for a waveform with 200 points.
Notice the first marker point, 0f, shows all four markers on for only the first waveform point.
If you create your own marker file, its name must be the same as the waveform file. If you download
I/Q data without a marker file, the signal generator automatically creates a marker file with all
points set to zero. For more information on markers, see the User’s Guide.
NOTE Downloading marker data using a file name that currently resides on the signal generator
overwrites the existing marker file without affecting the I/Q (waveform) file. However,
downloading just the I/Q data with the same file name as an existing I/Q file also overwrites
the existing marker file setting all bits to zero.
I/Q File
The I/Q file contains the interleaved I and Q data points (signed 16-bit integers for each I and Q
data point). Each I/Q point equals one waveform point. The signal generator stores the I/Q data in
the waveform directory.
Marker Byte 0000 1 0 1 1
Binary
Hex
Marker Number Position
4 3 2 1
Reserved
0000 0101
05
Sets markers 1 and 3 on for a waveform point
Example of Setting a Marker Byte
01 = Marker 1 on
05 = Markers 1 and 3 on
04 = Marker 3 on
00 = No active markers
0f = All markers on