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5-32 CALCulate3 Subsystem
:CALCulate3:DELTa:POWer[:STATe]{?| {ON | OFF | 1 | 0}}
Attribute Summary
Description
ited. The following string is a typical example of six val-
ues returned when POWer is specified from a delta
power measurement:
-7.42833100E+000,-1.00087200E+000,-2.52121400E+000,
-3.41918900E+000,-3.80437200E+000,-6.36282900E+000
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 com-
mands. Use the CALC3:POIN? query to determine the
number of points the CALC3:DATA? query returns.
In the ASNR calculation, only the POWer argument is
valid. The other arguments will generate a "Settings
conflict" error. Use the CALC2:DATA? query to retrieve
the signal wavelengths and powers.
Turns the delta-power measurement mode on and off.
Preset State: off
*RST State: off
SCPI Compliance: instrument specific
When this state is on, the power of the reference laser
line is subtracted from the power values of all laser lines
except the reference.
The power data returned by the CALC3:DATA? query is
the array of laser line power levels normalized to the
power level of the reference laser line. The power of the
reference laser line is returned as an absolute power
(unnormalized). The frequency data returned is the
array of absolute frequency values.
Note
Only one STATe command can be turned on at any one time.
Attempting to turn more than one state on at a time results in a
"–221 Settings Conflict" error.
and signal-to-noise" on page 4-13
selecting measurements.
Refer to "Measure delta, drift,
for additional information on
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