Using the OSICS SWT Module
148
OSICS User Manual
11.4.3 Verifying the Crosstalk
Subject
The following figure illustrates the appropriate setup to perform the crosstalk test:
Figure 105: SWT Performance Test – Crosstalk
Before Starting
Make sure you have the appropriate power-meter (see section
).
Procedure
1.
Disable all laser source outputs and other modules in the OSICS Mainframe.
2.
Connect the measurement equipments as indicated on
3.
Select dBm as the power-meter unit.
4.
Select the channel (Ch1 in our example) that you want to measure.
5.
Record the power value provided by the power-meter.
6.
Switch the laser signal to another channel, while the power-meter is still measuring
Ch1.
7.
Record the power on the power-meter.
8.
Subtract the second power from the first measure to get the crosstalk.
9.
Verify that the calculated value is over the specified value of 50 dB.
10.
Perform the same operation for the Ch
n
SWT channel.
Laser source
Com
OSICS
SWT 1x
n
Power-meter
Ch1
Chn
