2.2 Measurement
Alignment Adjustment <<See section 3.6 for the operating procedure>>
This function allows adjustment of the optical axis of the instrument’s built-in
monochromator (spectroscope).
The instrument’s optical performance is not guaranteed until the alignment adjustment
function has been executed. Failure to perform this adjustment can result in distortion
of measured waveforms. After alignment adjustment has been executed, wavelength
calibration is also subsequently performed automatically. If you are using the instrument
for the first time or using it after it has been severely shaken while being moved, perform
the alignment adjustment procedure after warm-up ends.
Wavelength Calibration <<See section 3.7 for the operating procedure>>
Wavelength calibration can be performed using the internal reference light source or an
external light source.
Auto Measurement <<See section 5.1 for the operating procedure>>
This function automatically sets the optimal measuring conditions for the input light and
displays the spectrum waveform. This function is useful when the characteristics of the
input light are not well known.
The wavelength range of input light that can be auto-measured is 1200–1670 nm.
The measurement conditions that are set automatically are as follows.
1. Span (SPAN)
2. Center wavelength (CENTER)
3. Reference level (REF LEVEL)
4. Resolution (RESOLUTION)
Other measuring conditions (sensitivity, averaging times, number of sampling points,
and interval settings) are set to their defaults. The horizontal and vertical axes of the
displayed spectrum waveform are zoomed to an appropriate degree.
Single Sweep <<See section 5.12 for the operating procedure>>
This function executes a single sweep or forcibly stops a sweep operation.
Repeat Sweep <<See section 5.12 for the operating procedure>>
This function performs repeat sweeping or forcibly stops a sweep operation. It enables
repeated, real-time measurement of waveforms.
Segment Measurement <<See section 5.12 for the operating procedure>>
This function allows you to divide up items to be measured in units of previously specified
segments.
Allows measurement delimited by segments (portions).
Synchronous Sweep <<See section 5.17 for the operating procedure>>
This function links the turnable laser source connected to the GP-IB2 port with the sweep
of the instrument. By synchronizing sweep with the turnable laser source, measurement
of high resolution and optical dynamic ranges can be obtained when measuring the
wavelength loss characteristics of optical filters, optical fiber gratings, and other items.
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