Upstream Signal Level Verification; Figure 3-3. Upstream Test Configuration; Table 3-4. Upstream Power Levels - ADTRAN Total Access 300 Series Installation And Maintenance Manual

Upstream Signal Level Verification

A valid optical power level delivered by the ONT must be received by the OLT in burst mode
at 1310 nm that is controlled in the upstream direction by grants given by the OLT.
The individual optical power level that should be present at the optical bulkhead that is
located on the ONT is listed in
To verify the correct upstream optical signal level is present:
1. Ensure all connectors are clean and dry. Refer to the
2. Setup and calibrate an OPM or OLTS that can be placed inline on the optical fiber and is
3. Connect the test equipment to the optical fiber drop cable and the optical bulkhead on
4. Verify the test equipment measurement results are within the optical signal level range
5. If the measurement results are within range, perform a verification of the provisioning of
6. If the measurement results are not within range, perform a verification of the
612877SBONT-5B
• If the measurement results are within range, perform the steps in
Level Verification"

Table 3-4. Upstream Power Levels

Optical Wavelength
1310 nm
ponents" on page 3-5 for details.
capable of performing wavelength filtering in order to obtain individual wavelength
optical power level readings.
the ONT using a test jumper as shown in
1490 nm
Drop cable

Figure 3-3. Upstream Test Configuration

described in Table 3-4 above.
the ONT at the OLT and verify that the proper upstream signal level is being received by
the OLT.
provisioning of the ONT at the OLT. If after verifying the provisioning the problem still
exists, replace the ONT.
Section 3, Troubleshooting - Troubleshooting
below.
Table 3-4.
Minimum Power Level
0 dBm
Figure
OLTS
"Upstream Signal
Maximum Power Level
+5 dBm
"Cleaning and Inspection of Com-
3-3.
1310 nm
Test jumper
OPM
or
ONT
3-7