GE D30D00HCHF8AH6AM6BP8BX7A Instruction Manual page 81

3 HARDWARE 3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS
Observing any fiber transmitter output can injure the eye.
When using a laser Interface, attenuators can be necessary to ensure that you do not exceed the
maximum optical input power to the receiver.
3
GE Multilin D30 Line Distance Protection System 3-29