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Testing Optical Couplers
Measuring Optical Coupler Characteristics
1
Connect the optical output to input no. 1 of the device under test
(DUT).
2
Connect optical head A to output no. 1 of the DUT.
3
Connect optical head B to output no. 2 of the DUT.
4
Activate the optical output.
If you want to use the internal light source, press S
OURCE
O
N
/
O
FF
to turn the source on. The source indicator lamp must be lit.
If you have connected an external light source to the optical
input, press S
OURCE
O
N
/O
FF
to turn the internal source off. The
source indicator lamp must be off.
Starting the Measurement
1
Press A
PPL
to activate the “Select Applications” menu.
2
Choose “Coupler Test”.
The first page of the coupler test is displayed.
The display shows the measured values for the Coupling Ratio
(CR) and the Splitting Ratio (SR).
Figure 4-2
Coupler Test Display, Page 1
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