Return Loss Test Mode - JDS Uniphase cORL-A1 Operating Manual

To edit the reference level:
The reference level can be also edited manually.
3. Select Edit Ref. Level in the MAIN menu.
The measurement display opens, showing EDIT in the
top right corner:
4. Press [λ] to select the wavelength.
5. Press [▲▼] to change the value
6. Press [MENU ENTER] to accept the setting.

Return Loss Test mode

The laser source and the receiver of the cORL-A1 are
both activated in Return Loss Test mode. The power
meter unit wavelengths are locked to the source
wavelengths. Only relative display mode is available.
In Return Loss Test mode, a signal is sent to the DUT
from the internal laser source. The power level reflected
from the DUT is measured and compared with the
transmitted signal. The return loss result is displayed by
the cORL-A1.
The accuracy of the return loss measurement is highly
dependent on the quality of the optical connection to the
cORL-A1.
⇒ Make sure that the test connection is kept very clean.
If the display does not show "High" when the test port is
open:
⇒ Clean the test connection (see
on page 38)
⇒ Normalize the unit (see
JDSU
„Cleaning the test port"
„Normalizing" on page
cORL-A1
5 O
PERATION
37).
35