1-2
IM AQ6376-01EN
1.2 Measurement
Alignment Adjustment <<See section 2.1 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 2.2 for the operating procedure>>
Wavelength calibration can be performed using the internal reference light source or an
external light source.
Purge
<<See section 2.3 for the operating procedure>>
In a typical measurement environment, water vapor contained in the air inside the
monochromator, which is integrated in the AQ6376, absorbs light. Purge is a function that
continuously supplies purge gas such as nitrogen gas through the PURGE GAS IN port
on the rear panel of the AQ6376 to the monochromator in order to eliminate moisture
contained in the internal air (the PURGE GAS OUT is open).
This reduces the effects of light absorption in measurements.
Auto Measurement <<See section 4.1 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 1500–3400 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 4.13 for the operating procedure>>
This function executes a single sweep or forcibly stops a sweep operation.
Repeat Sweep <<See section 4.13 for the operating procedure>>
This function performs repeat sweeping or forcibly stops a sweep operation. It enables
repeated, real-time measurement of waveforms.
Marker-to-marker sweep <<See section 4.14 for the operating procedure>>
This function enables sweeping between two specified waveform line markers. You can
sweep an arbitrary interval on screen.