Chapter 6
Fiber Optics Diagnostics (TRACETEK)
After cleaning the two center connectors, shown in the figure above, it is apparent
there is some improvement in return loss. However, in this case we expect the Fresnel
to be larger than before because of the higher launch power TRACETEK uses in the
Medium Resolution mode. Also notice that the Fresnels are wider than before. This
width is known as the dead zone, which is the distance that the receiver is blinded by
the reflection of each event. High output power and dirty or poorly polished
connectors will lead to an increased dead zone.
In its High Resolution mode with clean connectors, TRACETEK will have a dead zone of
2 m, while in the Medium and Low Resolution Modes the dead-zones will be about 8
m. When testing through patch panels or other cross-connect devices best results will
be achieved with the High-Resolution mode. Refer to Table 1 when deciding which of
the three resolution modes is best for your application.
TESTING WITH TRACETEK
The TRACETEK system is simple to use and requires no warm-up time.
1.
Insert the TRACETEK adapter into the LANTEK Cable Certifier.
2.
Clean the launch cable and attach it to the adapter.
3.
Using a Good Quality mating adapter, attach the launch cable to the fiber to be
tested. Clean all connections. Make sure the launch cable connector is aligned with
the TRACETEK connector slot to assure proper mating of the connector.
Figure 6-4: LANTEK/TRACETEK Configuration on a Fiber
4.
Select Fiber Optics on the Display Handset Ready screen. The Fiber Cable Type
screen appears.
5.
Highlight the desired fiber type and press ENTER to accept the new fiber type.
6.
From the Ready screen of the LANTEK main unit, Press AUTOTEST or select
Analyze to open the Analyze menu screen.
7.
The Analyze menu provides three resolution options: High, Medium, and Low. The
default resolution is High.
6-8
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