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88 Chapter 3
Basic Digital Operation
Using Waveform Markers
Loading Waveform Segments from Non-volatile Memory
1. Clear out the volatile memory and delete all WFM1 files: Power cycle the instrument.
2. Press Mode > Dual ARB > Waveform Segments.
3. If necessary, press
Load Store to Load.
4. Press
Load All From NVWFM Memory.
Copies of all NVWFM waveform segment files have been loaded into volatile memory as WFM1 files.
To load files individually, highlight the file and press
Load Segment From NVWFM Memory.
Renaming a Waveform Segment
1. Press Mode > Dual ARB > Waveform Segments.
2. Highlight the desired file and press
Rename Segment > Editing Keys > Clear Text.
3. Enter the desired file name and then press
Enter.
Using Waveform Markers
The signal generator provides four waveform markers to mark specific points on a waveform segment.
When the signal generator encounters an enabled marker, an auxiliary output signal is routed to the
rear panel event connector (described in “Rear Panel” on page 18) that corresponds to the marker
number. You can use this auxiliary output signal to synchronize another instrument with the
waveform, or as a trigger signal to start a measurement at a given point on a waveform.
You can also configure markers to initiate ALC hold, or RF Blanking (which includes ALC hold).
Creating a waveform segment (page 84) also creates a marker file that places a marker point on the
first sample point of the segment for markers one and two. When a waveform file is downloaded that
does not have a marker file associated with it, the signal generator creates a marker file without any
marker points. Factory-supplied segments have a marker point on the first sample for all four
markers.
The following procedures demonstrate how to use markers while working in the dual ARB player, but
the process is the same when working in any ARB format.
These procedures also discuss two types of points: a marker point and a sample point. A marker
point is a point at which a given marker is set on a waveform; you can set one or more marker
points for each marker. A sample point is one of the many points that compose a waveform.
There are three basic steps to using waveform markers:
“1. Clearing Marker Points from a Waveform Segment” on page 94
“2. Setting Marker Points in a Waveform Segment” on page 95
“3. Controlling Markers in a Waveform Sequence (Dual ARB Only)” on page 97
This section also provides the following information:
• “Waveform Marker Concepts” on page 89
• “Accessing Marker Utilities” on page 92
• “Viewing Waveform Segment Markers” on page 93
• “Viewing a Marker Pulse” on page 99