YOKOGAWA AQ7260 OTDR, User Manual, Page: 69 / 442

Chapter 1 BEFORE USING THE INSTRUMENT
1-42
1.12 Notes Before Performing Measurement
This section explains points to note when measuring a communication system. The
following points must be observed when performing measurement.
When Using AQ7261 / AQ7264 / AQ7265
These modules perform measurement by using the same wavelength as that used for
communications. Thus, if the optical fiber to be measured contains communication light,
communications will be affected. Furthermore, measurement cannot be performed
correctly by this instrument. So, the measurement environment (presence/absence of
communication light) must be taken sufficiently into account when using these modules.
For the wavelength used by the modules, refer to “Chapter 9 Specifications”.
The AQ7260 main frame can use AQ7265 module at the software version 2.00 or later.
Software version before 2.0 does not operate AQ7265 module.
CAUTION
Special care must be taken when using these modules since devices connected to the system
to be
measured may be damaged depending on total power of the light.
•
Special care must be taken not to allow communication failure. Should
communication failure occur by mistake by the user, YOKOGAWA will not accept
responsibility arising from that communication failure.
•
The AQ7260 main frame can use AQ7265 module at the software version 2.00 or
later.
•
Procedure of software upgrade, refer to page 10-2.
•
Procedure of checking software version, refer to page 10-4.
Furthermore, take care not to allow any external light to enter the instrument.
CAUTION
Entry of external light may result in damage to the instrument.
Caution
Refer