docsPnmCmOfdmChEstTiltDbPerMhz
DOCS-PNM-MIB ·
.1.3.6.1.4.1.4491.2.1.27.1.2.3.1.4
Object
This attribute represents the tilt in dB per MHz in the magnitude of
the equalizer coefficients. The tilt is calculated as the slope of a
linear least squares fit of the frequency domain data. This attribute
represents the tilt across the entire OFDM channel.
Note: An algorithm for calculating the ripple and tilt for these
measurements is provided in sections 6.5 and 6.6 of the SCTE Measurement
Recommended Practices, Fourth Edition.
Context
- MIB
- DOCS-PNM-MIB
- OID
.1.3.6.1.4.1.4491.2.1.27.1.2.3.1.4- Type
- column
- Access
- readonly
- Status
- current
- Units
- dB
- Parent
- docsPnmCmOfdmChanEstCoefEntry
- Table
- docsPnmCmOfdmChanEstCoefTable
- Siblings
- 7
Syntax
dB SNMPv2-SMIInteger32
- Source
- SNMPv2-SMIInteger32
- Base type
Integer32
Values & Constraints
Type Constraints
range: -2147483648..2147483647
Related Objects
Sibling Objects
| Object | Type | Syntax | OID |
|---|---|---|---|
| docsPnmCmOfdmChanEstCoefTrigEnable Setting this object to a value of 'true' instructs the CM to begin
collection and storing the channel estimate coefficients into the
file specified by the 'docsPnmCmOfdmChEstCoefF… | column | SNMPv2-TCTruthValue | .1.3.6.1.4.1.4491.2.1.27.1.2.3.1.1 |
| docsPnmCmOfdmChEstRipplePkToPk This attribute represents the value of the peak to peak ripple in
the magnitude of the equalizer coefficients [PHYv3.1]. The tilt
calculated for the TiltDbPerMHz is subtracted fro… | column | dB SNMPv2-SMIUnsigned32 | .1.3.6.1.4.1.4491.2.1.27.1.2.3.1.2 |
| docsPnmCmOfdmChEstRippleRms This attribute represents the value of the RMS ripple in the magnitude
of the equalizer coefficients. The tilt calculated for the TiltDbPerMHz
is subtracted from the frequency dom… | column | dB SNMPv2-SMIUnsigned32 | .1.3.6.1.4.1.4491.2.1.27.1.2.3.1.3 |
| docsPnmCmOfdmChEstGrpDelayVarPkToPk This attribute represents the peak to peak group delay variation in units
of nS. This attribute represents the group delay variation across the entire
OFDM channel. | column | nS SNMPv2-SMIUnsigned32 | .1.3.6.1.4.1.4491.2.1.27.1.2.3.1.5 |
| docsPnmCmOfdmChEstGrpDelayVarRms This attribute represents the RMS value of the group delay variation
expressed in units of nS. This attribute represents the group delay
variation across the entire OFDM channel. … | column | nS SNMPv2-SMIUnsigned32 | .1.3.6.1.4.1.4491.2.1.27.1.2.3.1.6 |
| docsPnmCmOfdmChEstCoefMeasStatus This attribute is used to determine the status of the measurement.
The PNM server will query this value to determine when the file
is ready for transfer. | column | MeasStatusType | .1.3.6.1.4.1.4491.2.1.27.1.2.3.1.7 |
| docsPnmCmOfdmChEstCoefFileName This attribute is the name of the file at the CM which is to be
transferred to the PNM server. The data is stored as 16 bit integers
for the I and Q data.
This valu… | column | SNMP-FRAMEWORK-MIBSnmpAdminString | .1.3.6.1.4.1.4491.2.1.27.1.2.3.1.8 |