Agilent X-Series Signal Generators SCPI Command Reference 283
Arb Commands
Dual ARB Subsystem–N5172B/82B ([:SOURce]:RADio:ARB)
n = number of points in the waveform
:MARKer[:SET]
Supported N5172B/82B
[:SOURce]:RADio:ARB:MARKer[:SET] "<file_name>",<marker>,<first_point>,<last_point>,
<skip_count>
This command sets a single marker point or a range of marker points on a waveform segment for the
selected marker (1–4). The dual ARB player and all of the ARB formats use this command.
The X- Series signal generator provides four independent markers. Two of the markers route output
signals to rear panel event connectors, Marker–1 to Event1 BNC and Marker–2 to Aux I/O. A marker
consists of marker points placed at defined sample points in a waveform segment. This means that a
marker point cannot be less than one or greater than the last sample point in the waveform. Marker
points are cumulative, so multiple command executions with different range values, without first
clearing the existing points, places additional marker points on the waveform. Because of this
cumulative behavior, it is a good practice to clear existing marker points prior to setting new points.
This will eliminate unexpected marker pulses. Refer to “:MARKer:CLEar” on page 281 and
“:MARKer:CLEar:ALL” on page 282 for information on clearing marker points.
For waveforms generated on the signal generator (baseband generator), the X- Series signal generator
automatically places a marker point at the first waveform sample for markers one and two.
NOTE You can set markers for either positive or negative polarity. The following discussions for this
command assume positive marker polarity. When using negative marker polarity, the marker
pulses occur during the periods of no marker points.
There are three ways to place marker points using this command:
• consecutive marker points over a range that collectively create a single marker pulse that spans
the range
• equally spaced marker points over a range, so that a marker pulse occurs at each sample point
that coincides with a marker point (Using this method, you can configure a clock signal by setting
the <skip_count> variable to one.)
• a single marker point placed at a specific sample point in the waveform, which outputs a single
pulse relative to the marker point location (To configure a single marker point, set the first and
last points to the same number.)
For more information on markers, refer to the User’s Guide.
The following list describes the command variables:
"<file_name>" This variable specifies the name of the waveform file in volatile waveform memory
(WFM1). For information on the file name syntax, see “File Name Variables” on
page 13.
<marker> This variable selects the marker number; an integer value from one to four.
<first_point> This variable defines the first point in the range over which the marker is placed.
This number must be greater than or equal to one, and less than or equal to the
total number of waveform points.
If you enter a value for either the first marker point or the last marker point that
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