docsIf3CmtsSignalQualityExtCNIR
DOCS-IF3-MIB ·
.1.3.6.1.4.1.4491.2.1.20.1.25.1.1
Object
column
DOCS-IF-MIBTenthdB
This attribute provides an upstream in-channel Carrier-to-Noise plus Interference Ratio (CNIR). CNIR is defined as the ratio of the expected commanded received signal power at the CMTS input, assuming QPSK0 modulation, to the noise plus interference in the channel. This measurement occurs prior to the point at which the desired CM signal, when present, is demodulated. The measurement includes the effect of the receive matched filter but does not include the effect of any ingress filtering. Both the signal power and noise/interference power are referenced to the same point, e.g., CMTS input.
Context
- MIB
- DOCS-IF3-MIB
- OID
.1.3.6.1.4.1.4491.2.1.20.1.25.1.1- Type
- column
- Access
- readonly
- Status
- current
- Parent
- docsIf3CmtsSignalQualityExtEntry
- Table
- docsIf3CmtsSignalQualityExtTable
- Siblings
- 1
Syntax
DOCS-IF-MIBTenthdB
- Source
- DOCS-IF-MIBTenthdB
- Base type
Integer32
Values & Constraints
No enumerated values or constraints recorded.
Related Objects
Sibling Objects
| Object | Type | Syntax | OID |
|---|---|---|---|
| docsIf3CmtsSignalQualityExtExpectedRxSignalPower ExpectedReceivedSignalPower is the power of the
expected commanded received signal in the channel,
referenced to the CMTS input. | column | DOCS-IF-MIBTenthdBmV | .1.3.6.1.4.1.4491.2.1.20.1.25.1.2 |