Anritsu MT9812B, Operation Manual, Page: 133 / 144

7-9
Maintenance and Re-transportation
7
7.4.2 Light Source
The output power is low.
The optical level does not stabilize.
The optical frequency stability is
poor.
No light is output.
Phenomenon Action
Set the ATT to 0.00 dB.
Clean the end face of the fiber cord
or the connector.
7.1 Daily Care and
Cleaning
Set the mode to CW.
Clean the end face of the fiber cord
or the connector.
7.1 Daily Care and
Cleaning
Set the mode to CW.
Clean the end face of the fiber cord
or the connector.
7.1 Daily Care and
Cleaning
3.5 Connection of
Remote Inter-
lock Connector.
3.6 Optical Output
Modifier Key Switch
Possible cause
The mode is set to ATT.
The end face of the fiber cord or
the connector is stained.
The mode is set to MOD.
The end face of the fiber cord or
the connector is stained.
The mode is set to MOD.
The end face of the fiber cord or
the connector is stained.
The remote interlock connector is
open.
The optical output modifier key
switch is off.
7.4 Troubleshooting