Table of Contents
Advertisement
Using the Analyzer
Measurement Techniques
Measuring Insertion Loss of a Device
Insertion loss is the difference between the power at the input of the device
and the power at the output of a device. Since this is a ratio type measure-
ment, insertion loss (or attenuation) is expressed in dB. This procedure
assumes that once a normalization has been performed, the normalized trace
will be on and a sweep will be taken.
1 Connect a fiber between the Source Output 1 and Receiver Input 1.
2 From the front panel, press Wavelength and enter the desired start and stop
wavelength values.
Tip: The normalized wavelength range is independent of the displayed mea-
surement wavelength range. This allows you to calibrate a wider wavelength
range and then perform a measurement on a subset of the normalized range.
However, if the wavelength range selected overlaps the normalized wave-
length range, only the normalized portion of the trace will be displayed.
3 Press Norm Ref to access the Normalization menu.
4 Press Normalize Setup and make changes as applicable for your device.
5 Press Close Panel and then press Normalize Input 1.
The message, "Normalizing receiver input 1, please wait" will
be displayed at the bottom of the screen. The normalization will take a few
moments. This time varies depending on the selected wavelength range.
When the normalization is finished, notice that the scale on the right side of
the display is in dB and the normalized trace is set to a reference of 0 dB.
6 Disconnect the fiber from the Source Output and connect it to the input of the
Device Under Test (DUT). Connect another fiber between Receiver Input 1
and output of the DUT.
7 Press Single Sweep to update the trace.
8 From the front panel, press Markers > Peak Search to find the insertion loss
of the DUT.
3-24
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Advertisement
Table of Contents
