RIGOL
2-90
DG900 Programming Guide
:SOURce:MARKer
Command List:
[:SOURce[<n>]]:MARKer:FREQuency
[:SOURce[<n>]]:MARKer:FREQuency
Syntax
[:SOURce[<n>]]:MARKer:FREQuency {<frequency>|MINimum|MAXimum}
[:SOURce[<n>]]:MARKer:FREQuency? [MINimum|MAXimum]
Description
Sets the marker frequency of the specified channel.
Queries the marker frequency of the specified channel.
Parameter
Name
Type
Range
Default
[<n>]
Discrete
1|2
1
<frequency>
Real
Refer to "Remarks".
550 Hz
Remarks
For step sweep (the sweep points determined by the start frequency, stop frequency, and step
respectively are f
1
, f
2
, ……, f
n
, f
n+1
……), if the marker frequency setting is one of the sweep points
values, the sync signal is TTL high level at the start of the sweep and will change to low level at the
marker frequency point. If the set marker frequency is not equal to the value at the sweep point, the
sync signal will change to low level at the sweep point which is closest to this marker frequency.
When [:SOURce[<n>]] or [<n>] is omitted, the system sets the related parameters of CH1 by default.
The range of <frequency> is limited by the "Start Frequency" (
[:SOURce[<n>]]:FREQuency:STARt
and "Stop Frequency" (
). Its range is between the start frequency
and stop frequency.
The generator will restart to sweep and output from the specified "Start Frequency" after the "marker
frequency" is modified.
Return Format
The query returns the marker frequency in scientific notation, with 7 effective digits. For example,
5.02 (the marker frequency is 500 Hz).
Example
:SOUR1:MARK:FREQ 500 /*Sets the marker frequency of CH1 to 500 Hz.*/
:SOUR1:MARK:FREQ? /*Queries the marker frequency of CH1 and the query returns
5.02.*/
Summary of Contents for DG952
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