Exfo OTDR 2 User Manual download pdf (Page 165)

Using the OTDR as a Light Source

OTDR 157

5. Select the desired modulation.

 For loss measurement, with a power meter at the other end, select

Continuous.

 For fiber identification, select 1kHz or 2kHz. This will allow the

person at the other end of the link to identify the fiber under test,

which could be particularly useful when working with cables

containing many fibers.

For easier fiber identification, the application also offers a flashing

pattern. If you select this pattern, the modulated signal (1 KHz or

2 KHz) will be sent for 1 second, then will be off for the next

second, then be sent again for 1 second, and so on. If you want the

OTDR to emit light in a flashing pattern, select 1 kHz+Blink or

2kHz+Blink.

IMPORTANT

OTDR can be used in continuous source mode (CW) to perform

optical power measurements and it is compatible only with the

following: high power Germanium (GeX) versions of the 300 and

600 Series, as well as any unit’s built-in GeX power meters.

The EPM-50 power meter is not compatible for measurements using

an OTDR in Continuous setting.

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Exfo OTDR 2 User Manual Page 165