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4-23
Programming Commands
Measurement Instructions
MEASure{:ARRay | [:SCALar]} :POWer:WNUMber?
Returns a wave number value.
Syntax
:POWer:WNUMber? [<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 wave number that is closest to the
<expected_value> parameter. Default units for <expected_value>
parameter are in m
–1
.
When used with an :ARRay command, an array of wave number 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).
Returned values are in inverse meters. Displayed units are inverse
centimeters. Power units are not affected.
<expected_value>
Constants
MAXimum The laser line having the largest wave number
MINimum The laser line having the smallest wave number
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 character “?” 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 command.