Filter
Top Products
7-4
Specifications and Regulatory Information
Definition of Terms
Amplitude
Calibration Accuracy
indicates the maximum power calibration error at the
specified wavelengths over the allowed environmental conditions. The ampli-
tude calibration accuracy is traceable to a National Institute of Standards and
Technology (NIST) calibrated optical power meter. NIST is the national stan-
dards laboratory of the United States.
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.
Display Resolution
indicates the minimum incremental change in displayed
power.
Sensitivity
Sensitivity
is defined as the minimum power level of a single laser-line input
to measure wavelength and power accurately. A laser line with less than the
minimum power may be measured but with reduced wavelength and power
accuracy. For multiple laser-lines input, sensitivity may be limited by total
input power.
Selectivity
Selectivity
indicates the ability to measure the wavelength and power of a
weak laser line in the proximity of a specified stronger laser line and separated
by the specified amount.
Input Power
Maximum displayed level
indicates the maximum total input power (total of
all laser lines present) to accurately measure wavelength and power.
Maximum safe input power
indicates the maximum total input power (total
of all laser lines present) to avoid permanent optical damage to the instru-
ment.
Maximum Number
of Lines Input
Maximum number of lines input
is the maximum number of displayed lines.
If more than 100 lines are input, only the 100 longest wavelength lines are dis-
played.
Input Return Loss
Input Return Loss
indicates the optical power reflected back to the user’s
fiber cable relative to the input power. It is limited by the return loss of the
front-panel connector, and assumes the user’s connector is good.