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MF’
Marker Frequency Output
MF
Marker Frequency Output
Returns the frequency (or time) of the on-screen active marker.
Syntax
XMF
Related Commands: MA, MKA, MKCF, MKD, MKF, MKN, MKPK, MKREAD.
Example
Connect CAL OUT to the spectrum analyzer input.
OUTPUT
718;"IP;SNGLS;"
Initializes the spectrum
analy~
activates
single-
sweep mode.
OUTPUT
718;"FA
280MHZ;FB
320MHZ;TS;"
Sets up the measurement range.
OUTPUT
718;"MKN;MKPK
HI;"
Places
marker
on peak of calibrator signal.
OUTPUT
718;"MF;"
Rzkesfrequency
of marker:
ENTER 718;A
Returns frequency to the computer:
PRINT A
Prints the frequency on the computer screen.
Description
The MF command returns the frequency of the active marker to the controller if the marker
is on screen. In delta marker mode,
nonzero
span,
“MF;” returns the frequency difference
between the two markers. In zero span,
“MF;” returns the marker time, or the delta marker
time.
The data that is returned by “MF;” depends on many command conditions including TDF,
MKREAD, and MDS.
If the trace data format P is used with MF, the result is one real value in time units or
frequency units, depending on the marker readout format. (See “MKREAD.“)
Example 1
OUTPUT
718;"TDF
P;MKREAD
FRCj;MF;"
This returns a frequency value (in Hz) if not in
zero-span.
OUTPUT
718;"TDF
P;MKREAD
FRQ;MF;"
This returns a time value (in seconds) if in
zero-
span.
OUTPUT
718;"TDF
P;MKREAD
PER;MF;"
This returns the time value (in seconds) of
l/(marker
frequency).
OUTPUT
718;"TDF
P;MKREAD
SWT;MF;"
This returns the
marker
time value (in seconds).
OUTPUT
718;"TDF
P;MKREAD
1ST;MF;"
This returns thefrequency value (in Hz)for
l/(marker
time).
OUTPUT 718;"TDF P;MKREAD
FFT;MF;"
This returns the frequency value (in Hz).
If the trace data format is used with trace data format A, the result depends on the setting of
the MDS command.
Programming Commands
5-317