25
Section 4
when self-referencing. Either referencing method may be selected for performing an insertion loss
reference setup.
SELF Referencing
Clean all fiber optic connectors and optical ports before performing test procedures described below.
Refer to Figure 4-2 for a related illustration.
1 On entry to the [TURBO REFERENCE] screen, the [INSERTION LOSS] screen is highlighted by default.
Press the [SELECT] soft key to access the [INSERTION LOSS REFERENCE] sub-screen.
2 Using either [UP] or [DOWN] arrow key highlight the [SELF] option.
3 Press the [SELECT] soft key to access the [LOOP BACK TO OPM PORT] screen.
4 Attach the APC connector on the reference cable to the Test Port.
5 Attach the UPC connector on the reference cable to the OPM Port.
6 Press the [
λ]
to select the desired wavelength to be referenced (refer to Section titled “Selecting
Test Wavelength”, page 23).
7 When the desired wavelengths are selected, press the [Back] key to return to the
[LOOP BACK TO OPM PORT] screen.
8 From the [LOOP BACK TO OPM PORT] screen, press the [START] soft key to begin the verification.
Once the display reads [REFS VERIFIED] followed by a beep (if the beeper function is enabled), then
the reference is set.
Note:
If the display reads [NOT VERIFIED], clean all fiber optic connectors again and check for excessive
fiber bends, be sure laser output is properly set. Perform the required procedures over.
Figure 4-2. Self Referencing.
TURBOTEST
500B
APC Connector
UPC Connector
4
5
OPM Port
Test Port
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