Filter
Top Products
5-70
Programming Commands
SENSe Subsystem
CORRection:DEVice
Selects the wavelength measurement algorithm. This command applies to
Agilent 86120B instruments with firmware version number 2.0. When first
turned on, the instrument briefly displays the firmware version. Instruments
with a firmware version number less than 2.0 do not have this feature.
Syntax
:SENSe:CORRection:[DEVice]{?| {NARRow | BROad}}
Constant Description
NARRow Selects wavelength measurements for narrowband devices
such as DFB lasers and modes of FP lasers.
BROad Selects wavelength measurements for broadband devices
such as optical filters and LEDs.
Attribute
Summary
Non-sequential command
Preset
State:
NARR
ow
*RST sets this value to NARRow.
SCPI Compliance: instrument specific
Description
The narrow bandwidth algorithm, used for measuring lasers, determines the
wavelength based upon the peak.
The broad bandwidth algorithm, used for LEDs, filters, and chirped lasers,
determines the wavelength based upon the center-of-mass of the power spec-
trum. The
peak excursion function is used to determine the value of the inte-
gration limits. Care must be taken to ensure that the integration limits are
above any noise. This is especially true when measuring devices with sloping
noise floors, like an EDFA amplifier. For more information on peak excursion,
refer to “PEXCursion” on page 5-33.
Instrument specifications apply when the device is set to
NARR
ow. Specifica-
tions do not apply in
BRO
ad
mode.
Query Response
The query form returns the previously selected device.
NARR
ow