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Programming Commands
CALCulate2 Subsystem
DATA?
Queries the corrected peak data of the input laser line.
Syntax
:CALCulate2:DATA? {FREQuency | POWer | WAVelength | WNUMber}
Constant Description
FREQuency Queries the array of laser-line frequencies after the peak
search is completed. If :CALC2:PWAV:STAT is on, the
power-weighted average frequency is returned.
POWer Queries the array of laser-line powers after the peak search
is completed. If :CALC2:PWAV:STAT is on, the total input
power is returned.
WAVelength Queries the array of laser-line wavelengths after the peak
search is completed. If :CALC2:PWAV:STAT is on, the
power-weighted average wavelength is returned.
WNUMber Queries the array of laser-line wave numbers after the peak
search is completed. If :CALC2:PWAV:STAT is on, the
power-weighted average wave number is returned.
Attribute
Summary
Preset
State: not affected
SCPI Compliance: standard
Query Only
Description
Use the CALC2:POIN? query to determine the number of points the
CALC2:DATA? query will return. The following string is a typical example of
the first few returned values returned when WAVelength is specified:
+1.54488600E-006,+1.54649100E-006,+1.54808300E-006,+1.54969600E-006,+1.55131200E-
006,+1.55293000E-006
This next string resulted by specifying the WNUMber argument:
+6.47296600E+005,+6.46625000E+005,+6.45959900E+005,+6.45287500E+005,+6.44615500E+005,+6.4
3943900E+005
Notice that only measurement values are returned to the computer. There is
no first value that indicates the number of values contained in the string as
there is, for example, with the FETCh, READ, and MEASure commands.
When there is no input signal, the POWer query returns –200 dBm; the WAVe-
length query returns 100 nm (1.0E–7).