YOKOGAWA AQ4305, Instruction Manual, Page: 32 / 50

4.1 Overview Chapter 4 Usage Preparations
4-2
4.1 Overview
To ensure proper use of this unit, preparations such as xyz-axes adjustment are required.
Be sure to perform xyz-axes adjustment in the following cases:
z
The first time you use this unit
z
After replacing a lamp
z
If it seems likely that this unit has been shaken (e.g., during shipping)
z
If this unit has not been used for an extended period of time
z
If output level errors depend on difference of operating temperature are at problematic
levels.
4.2 Handling the Optical Connectors
4.2.1 Usage the Protective Connector Caps
Connections are always made through optical connectors when using this unit, and they must be
handled very carefully. Put the screw cap on the optical output connector and cover optical fiber
connectors with caps usually.
Be sure to clean the connector contacts with alcohol before using them so that dust or the like
does not adhere to them. (
☛
See subsection 6.2.4 Daily maintenance and 4.2.2 Connecting
Optical Fibers)
Fig. 4-1 shows the shape of typical FC-type optical fiber connector.
Fig. 4-1 Shape of FC-type fiber connector
4.2.2 Connecting Optical Fibers
This section describes how to connect an optical fiber to the optical output connector on the unit.
①
Clean the end of the optical plug with a fiber cleaner.
①
-1 Push the tip of the optical plug against the cleaning surface of the fiber cleaner so
that it is perpendicular to the cleaning surface.
①
-2 With the tip of the optical plug pressing against the cleaning surface, turn it one
full rotation, then slide it horizontally.
①
-3 Now perform this process again.
②
Clean the optical output connector.
③
Connect the optical plug to the unit.
③
-1 Insert the optical plug so that its key engages with the guide on the optical output
connector.
③
-2. Turn the plug housing clockwise to fasten the optical plug.
FC-type optical fiber connector
Cap
Caution
z
Be sure to clean the end of the optical fiber being used before connecting it.
z
Do not try to forcefully attach the optical fiber plug with the plug inserted at a slanted
angle.
Doing so may damage the optical fiber plug or the optical output connector.
z
Press the optical plug hard against the cleaning surface of the special cleaner to clean
it.
If it is not pressed hard against the cleaning surface, it may not be possible to properly
clean the optical plug.