
18
varies significantly when testing 250 micron fiber up to 3 mm jacketed fiber. In no situation
will the displayed level be an accurate representation of the actual signal strength in the
fiber. Under no circumstances should an optical fiber be cut or disconnected based on
displayed levels on the OFI 400.
Important:
Optical fibers should only be cut or disconnected after the fiber has been
positively “toned” using an optical laser source transmitting one of the OFI 400 tones:
270 Hz, 330 Hz, 1000 Hz, 2000 Hz.
Identifying Tone with OFI 200 Model
Used in conjunction with an optical laser source capable of generating modulated 2 kHz [TONE]
signal, the OFI 200 will isolate the fiber carrying the 2 kHz [TONE] from service fibers and dark
fibers. To isolate the fiber carrying the 2 kHz [TONE] signal, perform the following steps.
1 Connect an optical laser source producing 2 kHz [TONE] signal to the fiber to be tested.
2 Place the fiber to be tested in the fiber groove.
3 Pull down and hold the clamping trigger to depress the fiber under test into the optical
assembly.
4 When the 2 kHz [TONE] signal is detected, the OFI 200 will illuminate the [TONE] indicator
and produce the continuous “beep” signal.
Note:
Traffic direction indication is disabled when a 2 kHz [TONE] signal is detected.
!
!
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com