User`s guide

Performance Tests Optional Tests
60 Agilent 81689A, 81689B and 81649A Tunable Laser Modules User’s Guide, Third Edition
5 Set the wavelenght of your Tunable Laser module to the value given
in Table 14.
6 Set the power for each Tunable Laser module to the maximum
specified output power given in the Test Record.
7 Press the key beside the laser output to switch on the laser.
8 Initialize the Optical Specrum Analyzer. Press [Preset] (the green
hardkey) and [Auto Meas].
9 Set the Optical Spectrum Analyzer:
a Set Span to 4 nm. Press [Span], enter the value.
b Set the Resolution Bandwidth to 0.5 nm. Press [Res BW] and
enter the value.
c Set the Sensitivity to -60 dBm. Press [SENS], and enter the value.
10 On the Spectrum Analyser, set the Marker to the highest peak. Press
[Peak Search]
11 Select a second marker. Press [∆] (delta).
12 Use the RPG, the Modify knob, to view and move the second marker
to the highest peak of the displayed side modes and note the
difference, delta, between the two markers as an absolute number.
Table 14 Wavelength Settings for Source Spontaneous Emmission Tests
Module Wavelength [λ]
Agilent 81689A 1525.000 nm
Agilent 81689B 1525.000 nm
Agilent 81649A 1570.000 nm