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Programming Commands
Measurement Instructions
MEASure{:ARRay | [:SCALar]} :POWer:FREQuency?
Returns frequency values.
Syntax
:POWer:FREQuency? [<expected_value>[,<resolution>]]
Description
When used with a :SCALar command, a single value is returned. The display is
placed in the single-wavelength mode, and the marker is placed on the signal
having a frequency that is closest to the
<expected_value>
parameter.
Default units for
<expected_value>
parameter are in Hz. When used with an
:ARRay command, an array of frequencies is returned. The display is placed in
the list-by-wavelength mode.
The
<resolution>
parameter sets the resolution of the measurement. It is a
unitless number whose value will be limited to either 0.01 or 0.001 (whichever
is closer). MAXimum resolution is equivalent to the
FAST
measurement update
mode. MINimum resolution is equivalent to the
NORMAL
measurement update
mode.
Returned values are in Hz (display is in THz). Power units are not affected.
<expected_value>
Constants
MAXimum The highest frequency signal
MINimum The lowest frequency signal
DEFault The current marker position
Used With <expected_value> <resolution>
SCALar optional optional
ARRay
ignored
a
a. Although ignored, this argument must be present if the resolution argument is specified.
optional
CONFigure command
When this function is used with the CONFigure command, the query question mark char-
acter “?”
must
not
be included in the string. However, the FETCh, READ, and MEASure
command are queries and require the question mark. Refer to the examples for this com-
mand.