Suricate – Iridium Optical Link Page | 23
Troubleshooting the ODU (Cont)
Problem
Possible cause
Laser LED not ON (TX)
1.
No DC power to the unit. Possible
power supply problem. Verify AC
connector is assembled correctly
2.
If a power meter is available, verify the
optical light output. The power should
be minimum -3dBm [0.5mW]
If any or all the above are not within the
guidelines, the laser or lasers circuit are
defective.
OPT LED not ON (RX)
2.
Not enough light or no light at all
arrives to the receiver input.
If a power meter is available make sure that
minimum of -3dBm arrives to the unit.
If lower optical power arrives please refer to
section 4 page 24- Optical cleaning fiber optic
connectors.