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4-33
Programming Commands
CALCulate2 Subsystem
When there is no input signal, the POWer query returns –200 dBm; the
WAVelength query returns 100 nm (1.0E–7).
PEXCursion
Sets the peak excursion limit used by the Agilent 86120C to determine
valid laser line peaks.
Syntax
:CALCulate2:PEXCursion{?| {<integer> | MINimum | MAXimum | DEFault}}
<integer> represents logarithmic units in dB. Valid range is 1 to 30 dB.
Constant
Description
MINimum 1 dB
MAXimum 30 dB
DEFault 15 dB
Attribute
Summary
Non-sequential command
Preset State: 15 dB
*RST State: 15 dB
SCPI Compliance: instrument specific
Description A laser line is identified as a valid peak if its amplitude is greater
than the peak excursion plus the amplitudes of the closest local min-
ima on either side of the peak. This command works in conjunction
with the peak threshold setting. Refer to “PTHReshold” on page 4-34.
Changing the peak excursion limit causes the instrument to reprocess
the current set of data. Refer also to “Defining Laser- Line Peaks” on
page 2-15.
The query response is the current value. For example, if the current
value is set to 15 dB, the following value is returned:
15