IDEAL Networks FiberTEK III, Руководство пользователя

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FiberTEK III Document 164802 Iss 4
User Manual Page 12
• In the 1-Jumper test method, the cable under test must be plugged
directly into the Rx Port of the FiberTEK™ III. Field Calibration uses a
single jumper (Launch Cord) for each direction.
Fig. 3 One Jumper Field Calibration
• If it is not possible or practical to plug the cable under test directly into
the Rx Port (for example if it is a Permanent Link) the 3-Jumper test
method must be used instead. For Field calibration in this method, 3
jumpers are used in each direction - a Launch Cord, a Field Calibration
Cord and a Tail Cord.
Fig. 4 Three Jumper Field Calibration
• For testing cables where both ends are available in one location, a
Loopback method is provided. This method uses only the Display
Handset. A 1-Jumper or a 3-Jumper Field calibration can be performed,
depending on whether it is possible to plug the cable to be tested
directly into the Tx and Rx Ports of the FiberTEK™ III .
Fig. 5 Loopback Field Calibration (1-Jumper)