Agilent Technologies 86121A, User Manual, Page: 128 / 240

Measurement Instructions 5
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13
Query Response
The following line is an example of a returned string
when :MEAS:SCAL:POW? MAX is sent:
-5.88000
If six laser lines are located and :MEAS:ARR:POW? is
sent, the following string could be returned. Notice that
the first returned number indicates the number of laser-
line values returned in the query.
6,-1.37001,-1.10001,-9.62000,
-7.94000,-7.01000,-1.04001
MEASure{:ARRay | [:SCALar]} :POWer:FREQuency?
[<expected_value>[,<resolution>]]
Returns frequency values.
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> param-
eter 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 measure-
ment 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.
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