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Introduction
Agilent N4373A Lightwave Component Analyzer, First Edition
• Make sure that all optical cables of the test setup are
fixed to the table so that they won't move during
measurements.
• Make sure all RF cable connectors are clean and free of
wear debris.
• Movement of the fibers and cables during the test
procedures and the quality of optical connectors affect the
result of power measurements.
• The environmental conditions (temperature and relative
humidity) must remain constant during the test.
Test for unmodulated source output power and wavelength
1 Connect the optical fiber patch cord between the LCA
Optical Output connector and the optical power meter.
2 Terminate the RF Input of the optical test set with the 50
Ohm male termination.
3 Activate the LCA laser source with the key switch.
4 Set the wavelength of the power meter to the LCA source
wavelength.
5 Record the optical output power as determined by the
power meter, which should be 7 dBm +/- 0.5dB, typ.
6 If the LCA has another wavelength available, change the
LCA source to this wavelength and repeat Steps 4- 5 for
nd
the 2
wavelength.
7 Now disconnect the optical fiber from the power meter
and attach it to the wavelength meter or optical spectrum
analyzer.
8 Record the peak signal wavelength.
9 If the LCA has another wavelength available, change the
LCA to this wavelength and record the peak signal
wavelength for this 2
LCA measurement tests
1 Set up the measurement parameters on the network
analyzer according to the following table:
Parameter setting
IFBW
Number of points
Specifications and Regulatory Information
nd
wavelength.
Value
10 Hz
200
125
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