Anritsu MS9740B - Procedure

Chapter 5 Measurement Functions
5-6
5.1.3 Procedure
To measure DFB-LD:
1. Input the optical signal.
2. Set the wavelength, resolution, and level scale.
3. Press
Single
to start the measurement.
4. When the name of the
F7
horizontal key is not
Application
, press
F8
,
and then press
F7
.
5. Press
f1 DFB-LD Test
. The measurement result display field is
displayed.
6. Press
f1 Slice Level
and input the value using the keypad or rotary
knob. The Slice Level setting range is from 0.1 to 50.0 dB.
7. Press
f2 Side Mode
and select the side mode from
f1
to
f3
.
8. Press
f3 Kσ
and select the factor of reference deviation using
f1
to
f5
keys, keypad, or rotary knob. The factor can be entered from 1.00 to
10.00.
For the relationship between factor and level differences, refer to
Section 4.5.5 “Analyzing Multiple Spectrum Center Wavelength and
Spectrum Width (RMS method) ”.
9. Press
f4 ndB Width
. Input the cut level (in ndB), using the keypad or
rotary knob.
10. When not detecting a side mode properly, press
f5 Search Resolution
.
Search Resolution can be input in the range of 0.10 to 10.00 dB. The
level resolution detecting the side mode is set using keypad or rotary
knob.
11. Press
f7 Off
to finish the DFB-LD measurement.