98 Keysight 86120D and 86122C Multi-Wavelength Meters User’s Guide
4 Specifications and Regulatory Information
Definitions of Terms
Characteristics and Specifications
The distinction between specifications and characteristics is described as
follows:
• Specifications describe warranted performance.
• Characteristics provide useful, but non-warranted information about
the functions and performance of the instrument.
• General Characteristics give additional information for using the
instrument. These are general descriptive terms that do not imply a
level of performance.
Wavelength
• Range refers to the allowable wavelength range of the optical input
signal.
• Absolute accuracy indicates the maximum wavelength error over the
allowed environmental conditions.
• Differential accuracy indicates the maximum wavelength error in
measuring the wavelength difference between two signals that are
simultaneously present.
• Minimum resolvable separation indicates the minimum wavelength
separation of two laser lines input required to measure each
wavelength simultaneously. Two laser lines closer in wavelength than
the minimum resolvable separation are not resolved and one average
wavelength is displayed.
• Display resolution indicates the minimum incremental change in
displayed wavelength.
Power
• Calibration accuracy indicates the maximum power calibration error at
the specified wavelengths over the allowed environmental conditions.
• Flatness refers to the maximum amplitude error in a measurement
between two lines that are separated in wavelength by no more than
the specified amount.
• Linearity indicates the maximum power error in measuring the change
in power of one laser line.
• Polarization dependence indicates the maximum displayed power
variation as the polarization of the input signal is varied.
To Next Page
Loading...
