docsPnmCmtsUsOfdmaRxMerTable

This item provides measurements of the upstream receive modulation
error ratio (RxMER) for each subcarrier. The CMTS measures the RxMER
using an upstream probe, which is not subject to symbol errors as data
subcarriers would be. The probes used for RxMER measurement are typically
distinct from the probes used for pre-equalization adjustment. For the
purposes of this measurement, RxMER is defined as the ratio of the average
power of the ideal QAM constellation to the average error-vector power.
The error vector is the difference between the equalized received probe
value and the known correct probe value. If some subcarriers (such as
exclusion bands) cannot be measured by the CMTS, the CMTS indicates that
condition in the measurement data for those subcarriers.

MIB

DOCS-PNM-MIB

OID

.1.3.6.1.4.1.4491.2.1.27.1.3.7

Type

table

Status

current

Parent

docsPnmCmtsObjects

Children

1