Cleaning The Connectors; Cleaning The Bulkhead; Signal Level Verification; Downstream Signal Level Verification - ADTRAN Total Access 300 Series Installation And Maintenance Manual

Total Access 300 GigE SFU ONT Installation and Maintenance Guide

Cleaning the Connectors

To clean the connector, complete the following:
1.Wrap the cleaning wipe around the exposed connector endface, apply firm pressure, and
2. Press the endface of the ferrule directly into a clean, wet spot on the wipe and twist the
3. Inspect the endface of the ferrule with either the fiberscope or videoscope. If further

Cleaning the Bulkhead

To clean the bulkhead, complete the following:
1.Remove any dust caps or connectors from bulkhead.
2. Insert a new fabric spiral wrapped cleaning tip into the ferrule of the bulkhead.
3. Using your fingers, apply a firm pressure to the cleaner as you twist the cleaner handle
4. Discard the cleaning tip after using on a bulkhead.

Signal Level Verification

The following sections detail signal level verification if problems are encountered when
service activation of an installed ONT is performed. Both Downstream signal Level Verifi‐
cation on page 45 and "Upstream Signal Level Verification" on page 45 are discussed.

Downstream Signal Level Verification

A valid optical power level delivered by the OLT must be received at the drop cable point in
the GPON to assure proper ONT ranging and operation. There is one optical wavelength
(1490 nm) to consider in the downstream direction that will contribute to the absolute optical
power level delivered to the ONT.
The 1490 nm wavelength is used for digital data. The individual optical power levels that
should be present at the optical fiber that is connected to the ONT are listed in Table 11.
To verify the correct downstream optical signal levels are present:
1.Ensure all connectors are clean and dry. Refer to "Cleaning and Inspection of Compo‐
2. Setup and calibrate the OPM or OLTS for wavelengths that apply to FTT transmissions
44
twist the wipe around the ferrule back and forth in quarter to half‐turn rotations at least
three times.
ferrule while applying pressure to perform a wiping action.
cleaning is warranted, use the fabric type cleaner to continue cleaning according to the
cleaner instructions. Remember an angle polished connector is in use so refer to that
specific section of the fabric type cleaner's instructions.
two or three times to create a wiping action of the cleaning tip on the ferrule endface.
Table 11. Downstream Power Level
Optical Wavelength
1490 nm (digital)
nents" on page 43 for details.
(that is 1310 nm and 1490). Verify the test equipment is capable and setup for wavelength
Minimum Power Level
–28 dBm
6418770XGX-5B