
Application Tutorials
Tutorial 2: Measure in Optical Power Units
Tutorial 2: Measure in Optical Power Units     The analyzer display has the ability to show optical units refere nced to the 
input of the optical-to-electrical converter. This changes the channel and 
marker readouts to watts/div. 
1Set the analyzer to a known state by pressing: 
INSTR PRESET, Trg,Cal, CH1 EXT ATTEN responsivity value,
V/Watt 
For example, the following figure shows 350 V/Watt entered. Notice the sof t -
key label changes to CH1 RSPVTY (responsivity). 
2To use the markers to read optical power, press: 
Markers, Y1 (--) 
3Adjust the marker line to the peak of the resp ons e. Fo r exa mpl e,  the  fo llowi ng  
figure shows a peak optical power of 1.5 mW.