Anritsu MS9740B - Calibrating Wavelength

3.1 Calibrating Before Measurement
3-5
3
Measurement
3.1.2 Calibrating Wavelength
Wavelength can be calibrated using either an external or wavelength
calibration light source (MS9740B-002). High-accuracy measurement is
supported by the wavelength calibration light source of MS9740B-002.
Before calibrating wavelength, always refer to 3.1.1 “Automatic
Alignment of Optical System”, and then perform automatic alignment of
the optical system. Before measuring wavelength, calibrate the
wavelength as described below.
To calibrate using external optical light source:
1. Input the following optical specifications in the MS9740B.
Level –20 dBm or more
Wavelength 600 to 1700 nm
Spectrum single mode
2. Press
F8
to display Cal on the horizontal function keys.
3. Press
F2 Cal
.
4. Press
f3 Wl Cal (Ext)
.
5. Press
f1 Execute
. The “Calibrating” message is displayed. Press
f2
Cancel
to cancel calibration and return to the status before executing
calibration.
6. Calibration of the wavelength is finished when the
Calibrating…message disappears from the screen.
Note:
Use a single mode oscillation light source such as a DFB laser diode
or gas laser.
In addition, always use a light source that meets the specifications.
If the light source spectrum is not single mode or the level is too low,
calibration may not be performed correctly when performing
auto-alignment of the optical system.