Keysight Technologies 86120B, User Manual

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163
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:
+6.47005,+6.46005,+6.45005,+6.45005,+6.446155
00E+005,+6.43005
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 WAVelength
query returns 100 nm (1.0E–7).