Operation Manual

FiberTEK III Document 164802 Iss 3
User Manual Page 14
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)