Operation Manual

FiberTEK III Document 164802 Iss 3
User Manual Page 13
Chapter 3. Calibration
To comply with precision requirements, you should have your LanTEK III and FiberTEK™ III Cable
Tester calibrated on an annual basis. Before sending the tester for calibration or maintenance, please
contact the local Technical Customer Service of IDEAL INDUSTRIES at www.idealnetworks.net
3.1 Field Calibration
During calibration, FiberTEK™ III calculates a reference level for the loss measurement. Calibration
accuracy depends on warm-up period of measuring adapter and quality of the test cords.
NOTE
The launch and tail cords must correspond to the type of fiber to be tested (e.g. 50-m launch fibers for
testing of 50-m cable).
All connections on launch, tail and reference cords must be in compliance with the requirements of
ISO/IEC 14763-3 concerning length as well as insertion loss.
To ensure the specified measuring accuracy, a sufficient warm up period must be allowed for the
measuring adapter.
The temperature of LanTEK
®
III Cable Tester and measuring adapter should correspond to the ambient
temperature.
To prevent condensation on optics, do not remove dust covers on measuring adapters before performing
cable test.
Close optical input/output again immediately with dust covers after removal of launch fibers.
The field calibration values are saved in the Display handset (DH). The loss of the launch fibers and
couplers used during calibration are deducted from the loss results during the cable test.
Before testing of fibers a calibration should be performed if:
 the launch cords have been subject to change or strong movement;
 the fiber type has been changed;
 the measuring adapters have been changed;
3.2 Performing Field Calibration
1. Connect the reference patch cables between the Display handset (DH) and Remote handset
(RH) (Normal mode) or looped on the Display handset (Loop mode).
2. Once connected, do not disconnect the Tx reference patch cable until testing on the target
cables is complete.
3. Use Arrow Keys to navigate on ready screen to "Calibration" and press Enter.
4. Select required calibration method
NOTE
The Field Calibration should be performed using the same arrangement of jumpers as will be used in the
tests.
1. Use Arrow Keys to navigate on ready screen to " Field Calibration" display and confirm with
Enter.
2. Select the required method:
 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.