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User Interface Reference
Optical Path Deembedding
66
• Select "EverySweep" to optimize at the start of every
measurement sweep.
This increases accuracy, but also increases measurement
times.
This is the default modulator bias optimization mode, and is
used to calibrate and verify the instrument.
• Select "Continuous" to optimize while the measurement is
running.
With "Continuous" modulator bias optimization, a 10 KHz
pilot tone is applied to the signal. This improves the short
and long term signal stability of the modulator working
point.
The pilot tone will affect measurements with IFBW settings
of the network analyzer >1.5 kHz.
For IFBW settings of the network analyzer >3 kHz we
recommended you do not use "Continuous" modulator bias
optimization, Use "Every Sweep" or "Once" instead.
Forward RF Power [dBm]
Sets the RF power level for the source port.
Enable
Select if you want the LCA to compensate for the optical
connections to the DUT.
Deembedding Data
Select how you want to specify the characteristics of the optical
path.
• Parameter lets you characterize the source or receiver
optical path by its length and refractive index, and
attenuation.
Keysight N4374B Lightwave Component Analyzer, User's Guide
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