Anritsu MS2840A - RMKF?

Chapter
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Native Device Message Details
4-206
RMKF?
Reference Marker Frequency (Time) Query
Function
This command queries the frequency or time of the marker point set by
Relative To of the active marker.
Query
RMKF?
Response
freq
Returns a value without a suffix code in Hz units, and with a
resolution of 0.01 Hz.
time
Returns a value without a suffix code in ns units, and with a
resolution of 0.1 ns.
Details
Returns *** when Marker Mode is set to other than Delta.
This command is not available during the Spurious Emission
measurement and when Displayed Segment Mode is set to Auto.
Example of Use
To query the time of the marker point set by Relative To of the active
marker (1 s).
RMKF?
> 1000000000.0