Explanation Of Terms; Responsivity; Relative Frequency Response Uncertainty; Absolute Frequency Response Uncertainty - Keysight N4375D User Manual

Explanation of Terms

Responsivity

Relative Frequency Response Uncertainty

Absolute Frequency Response Uncertainty

Frequency Response Repeatability

Minimum Measurable Frequency Response

Keysight N4375D Lightwave Component Analyzer, User's Guide
For electro- optical devices (e.g. modulators ) this describes
the ratio of the optical modulated output signal amplitude
compared to the RF input amplitude of the device.
For opto- electrical devices (e.g. photodiodes) this describes
the ratio of at the RF amplitude at the device output to the
amplitude of the modulated optical signal input.
Describes the maximum deviation of the shape of a
measured trace from the (unknown) real trace. This
specification has strong influence on the accuracy of the 
3 dB cut- off frequency determined for the device under test.
Describes the maximum difference between any amplitude
point of the measured trace and the (unknown) real value.
This specification is useful to determine the absolute
responsivity of the device versus modulation frequency.
Describes the deviation of repeated measurement without
changing any parameter or connection relative to the average
of this measurements.
Describes the average measured responsivity when no
modulation signal is present at the device under test. This
represents the noise floor of the measurement system.
Specifications
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