docsPnmCmOfdmChEstCoefFileName
DOCS-PNM-MIB ·
.1.3.6.1.4.1.4491.2.1.27.1.2.3.1.8
Object
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 value can only be changed while a test is not in progress. An attempt
to set this value while the value of 'docsPnmCmOfdmChEstCoefMeasStatus' is
'busy' will return 'inconsistentValue'.
If the value of this object is the DEFVAL (empty string), then a default
filename value will be used. Otherwise the value set will be used as
the filename.
If a default filename value is used, it is generated as the test name
plus the CM MAC Address plus the 'epoch time'. The epoch time (also known
as 'unix time') is defined as the number of seconds that have elapsed
since midnight Coordinated Universal Time (UTC), Thursday, 1 January 1970.
Hence, the format would be:
PNMChEstCoef_<CM MAC address>_<epoch>
For example: PNMChEstCoef_0010181A2D11_1403405123
The data file is comprised of a header plus the Chan Estimate
Coefficient Data.
The header is comprised of ordered fixed-length fields. Unless
otherwise specified, the header fields contain hex values that are
right-justified within the field. If necessary the field is left-padded
with zero values.
Syntax of the file is as follows:
File Type set to '504E4D02' (without the quotes) 4 bytes
Capture Time 4 bytes
DS Channel Id 1 byte
CM MAC Address 6 bytes
Subcarrier zero frequency inHz 4 bytes
Subcarrier spacing in kHz 1 byte
Length in bytes of Chan Estimate Data that follows 4 bytes
Channel estimate coefficient Data ComplexData
Context
- MIB
- DOCS-PNM-MIB
- OID
.1.3.6.1.4.1.4491.2.1.27.1.2.3.1.8- Type
- column
- Access
- readwrite
- Status
- current
- Parent
- docsPnmCmOfdmChanEstCoefEntry
- Table
- docsPnmCmOfdmChanEstCoefTable
- Siblings
- 7
Syntax
SNMP-FRAMEWORK-MIBSnmpAdminString
- Source
- SNMP-FRAMEWORK-MIBSnmpAdminString
- Base type
OctetString
Values & Constraints
Type Constraints
range: 0..255
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 |
| docsPnmCmOfdmChEstTiltDbPerMhz 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… | column | dB SNMPv2-SMIInteger32 | .1.3.6.1.4.1.4491.2.1.27.1.2.3.1.4 |
| 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 |