Cisco Cisco Digital Service Access Node (DSAN) 8200 故障排查指南
Registration and Connection Sequence
4032301 Rev A
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Use CLI diag page 4.1 to verify that the upstream gain and attenuation are correct.
These parameters are reported as shown in the following example.
These parameters are reported as shown in the following example.
Troubleshooting
If upstream gain and attenuation are incorrect, check the reverse power level. The
physical limits of the eCM are approached at around 54 dBmV.
physical limits of the eCM are approached at around 54 dBmV.
If there is too much loss in the reverse path, ranging will fail and the eCM will
default to one-way operation. You can correct this by reducing the loss of your plant
upstream of the DSAN input.
default to one-way operation. You can correct this by reducing the loss of your plant
upstream of the DSAN input.
Note: Adjusting the FWD INPUT pad in the DSAN does not change the upstream
levels.
levels.