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Measurement Setup
11
SLLU256 – October 2016
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Copyright © 2016, Texas Instruments Incorporated
ONET1131EC Evaluation Module
8.
Go to the
Transmitter Configuration
page as shown in
Figure 10
.
Figure 10. Transmitter Configuration Page
9. In the
Monitor Fault Threshold
box, set the
Bias Current
and
Power
sliders to their maximum value.
10. Set
Digital Bias Current
and
Digital Photodiode Current Monitor
in the
Monitor Fault Threshold
box.
11. Set the
TX Output Mode
to
Single Ended Mode (OUTP)
.
12. Set the desired
TX Laser Bias Current
,
Transmitter Modulation Current
, and TX Cross Point (TX Eye
Cross-Point Adjust.
13. In the
Monitor Fault Threshold
box, reduce the
Bias Current
fault threshold slider until a fault occurs.
Increase the
Bias Current
fault threshold level at least by a value of 16.
14. Go to the
Core Configuration
page and toggle the
Enable Laser Bias Current
bit. This disables the
fault and restores the transmitter output.
15. In the
Monitor Fault Threshold
box, reduce the
Power
fault threshold slider until a fault occurs.
Increase the
Power
fault threshold level at least by a value of 16.
16. Go to the
Core Configuration
page and toggle the
Enable Laser Bias Current
bit. This disables the
fault and restores the transmitter output.